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Compare and contrast meiosis and mitosis. How many daughter cells are produced by each, and how many chromosomes do they have? In what contexts do meiosis and mitosis occur?
Answers
Answer:
In mitosis, the daughter cells have the same number of chromosomes as the parent cell, while in meiosis, the daughter cells have half the number of chromosomes as the parent.Mitosis and meiosis are two different kinds of cell cycle reproduction. They have many things in common together, such as being an asexual form of reproduction. Mitosis produces body cells, identical daughter cells that can grow an organism and replace old/dead cells. Meiosis on the other hand makes gametes; or reproductive cells. When mitosis happens, it goes through stage of the mitotic phase known as PMAT. PMAT stands for: prophase, metaphase, anaphase, and telophase; followed by cytokinesis. Meiosis on the other hand, goes through PMAT twice. After mitosis, the product is 2 identical cells, which are used to replace cells or to grow. After meiosis, 4 NON-identical cells are made, which contain HALF the set of chromosomes; hence being called a haploid cell.
Explanation:
Answer:
see explanation
Explanation:
Meiosis is involved in gamete reproduction and results in four genetically distinct daughter cells. In contrast, mitosis involves the somatic cell and results in two genetically identical daughter cells. In mitosis when the division is complete you have two diploid cells. A diploid cell has two sets of chromosomes. Whereas with meiosis whose goal is to produce gametes you end up with 4 haploid cells. A haploid cell has just a single set of chromosomes. Meiosis and mitosis go through very similar phases however meiosis crossing over takes place and variation occur. Mitosis the division takes place in four stages and in Meiosis there is a two-division process of four stages each.
Related Questions
Which fertilization event occurs immediately after the formation of the male and female pronuclei?spindle formation and cleavage beginscytokinesis beginsoocyte activation beginsrelease of a secondary oocyte and the first polar body
Answers
After the formation of the male and female pronuclei, the next fertilization event that occurs is spindle formation. Spindle formation is a critical step in the process of cell division that prepares the cell for proper chromosome segregation during mitosis or meiosis.
In fertilization, spindle formation occurs in the zygote, which is the cell resulting from the fusion of the sperm and egg cells. The spindle fibers are responsible for separating the chromosomes from each other during cell division, ensuring that each daughter cell receives the correct number of chromosomes. Once the spindle is formed, cytokinesis begins, and the cell divides into two daughter cells. This is followed by oocyte activation, which is a series of changes that occur in the egg cell to prepare it for embryonic development. Finally, the secondary oocyte and the first polar body are released from the ovary and travel through the fallopian tube toward the uterus.
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An ecologist is studying Dunaliella salina a single celled algae in a local pond. The pond is located near a construction site and the ecologist wants to know what affect, if any, the construction site is having on the pond, as there has been a steady decline in the Dunaliella salina population. In order to complete their study the ecologist would like to examine the organelles inside Dunaliella salina. If they would like to examine the inner structure of the chloroplasts of an already dead Dunaliella salina, what microscope would be best suited for this task? *
A.)dissecting microscope
B.)compound microscope
C.)scanning electron microscope
D.)transmission electron microscope
Answers
In the given scenario, to see the structures of chloroplast scientists can use a transmission electron microscope. The correct option is D.
What is transmission electron microscope?Transmission electron microscopes (TEM) are microscopes that visualize specimens and basically create a much higher magnification of an image using an electron particle beam.
TEMs have the ability to magnify objects up to 2 million times.
Transmission electron microscopy (TEM) is a popular method for examining the ultrastructure of organelles.
TEM generates high-resolution pictures by passing electrons through an ultrathin segment of a sample and magnifying the resulting image with a series of lenses.
The electron beam of the TEM penetrates thin slices of biological material, allowing the study of individual components of cells and organelles.
Thus, the correct option is D.
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Based on the reading how do you think the Hawaiian island chain formed? Be sure to mention the initial information of the island and the direction of Pacific and is moving.
Short answer please.
Answers
Answer:
The Hawaiian islands were formed by a hot spot in the middle of the pacific plate. The tectonic plate moved over the hot spot forming the islands.
The peptidoglycan layer of Gram-negative bacteria is
sandwiched between two cell membranes.
TRUE or
FALSE
Answers
The peptidoglycan layer of Gram-negative bacteria is sandwiched between two cell membranes is True.
Briefing:Through the hydrophobic head of lipoprotein molecules known as Braun's lipoproteins, the peptidoglycan layer is non-covalently attached to them. The periplasmic area contains a concentrated gel-like matrix called the periplasm, Sandwiched between the outer membrane and the plasma membrane.
What purpose does a peptidoglycan function?Peptidoglycan, which is a structural component of the bacterial cell wall, balances the osmotic pressure in the cytoplasm and offers structural support. Additionally, during bacterial cell division, peptidoglycan takes part in binary fission.
What cells have peptidoglycan in cell walls?Peptidoglycan is a component of the cell walls of both gram positive and gram negative bacteria (also known as murein). Other than in the bacterial cell walls, this specific chemical has never been discovered anywhere else on Earth.
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What is the term for a plant that produces a seed with a protective cover?
A. Sporophyte
B. Coelem
C. Angiosperm
D. Gymnosperm
Answer: C Angiosperm
Answers
Advocates for organic farming claim that their methods result in a number of benefits to farmers, consumers, and the environment. Scientists now plan to study the claims that organic farming advocates make by developing testable hypotheses about the economic and environmental benefits of growing organic foods. The scientists plan to collect data from farmers and other producers. Which hypothesis should the scientists use
Answers
Answer:
''Organic farming reduces the cost of farming that benefits the farmers economically and also better the environment.''
Explanation:
The hypothesis i.e. ''Organic farming reduces the cost of farming that benefits the farmers economically and also better the environment.'' This hypothesis can be tested by the scientists by taking two fields in different location having same environmental conditions. One field they apply conventional farming whereas other field apply only organic materials and no chemicals. We can see that the cost on expensive fertilizers, pesticides and weedicides can't used in organic farming so it is economically benefitted to the farmers as well as no pollution occurs which happens due to the use of chemicals. Moreover, the price of organic food is 3 times higher due to its non-hazardous nature.
Warm-Up
Sort these resources into renewable and nonrenewable resources.
0
fossil fuels
Renewable Resources
water
wind
geothermal energy
minerals
solar energy
Answers
Answer:
Renewable Resources
water
wind
geothermal energy
solar energy
Nonrenewable resources
minerals
fossil fuels
Hope this helps you
Answer:
Renewable:
Wind
Geothermal energy
Solar energy
Nonrenewable:
Fossil fuels
Minerals
Water
Explanation:
This is correct, I put a picture above to show you all ^^
How are the bodies of the three animals similar to one another? How are they different?
Answers
Answer:
How are animals similar? All animals are made of many cells. Most animals can move on their own. Like all living things, animals grow, change, reproduce, and respond to their environment.
Animals are made up of several cells. Most animals have independent movement. Animals develop, transform, reproduce, and react to their surroundings like all other living creatures do.
What are considered as animals?Any eukaryotic multicellular organism of the biological kingdom Animalia is referred to as an animal.
The majority of creatures in this kingdom lack a cell wall, are heterotrophic, motile, have specialised sensory organs, and originate from blastulae during embryonic development.
According to some, the fundamental distinctions between humans and other animal species are our capacity for complex reasoning, our use of complex language.
Also, the capacity for problem-solving, and the capacity for introspection (this means describing your own thoughts and feelings).
Multiple cells make up an animal. The majority of animals can move on their own. Like all other living things, animals grow, change, reproduce, and respond to their surroundings.
Thus, this way, many animals contrasts each other.
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what are the complementary base pairings
Answers
Answer:
Complementary base pairing is the phenomenon where in DNA guanine always hydrogen bonds to cytosine and adenine always binds to thymine. The bond between guanine and cytosine shares three hydrogen bonds compared to the A-T bond which always shares two hydrogen bonds.
The brown skin trait is dominant over the black skin trait in cows. If two heterozygous brown skin cows are crossed, what is the brown-skinned offspring?
Answers
B = Brown Skin
b = black skin
B b
B BB Bb
b Bb bb
Hope this helped :D
The chances of a homozygous brown skin cow is 25%
The chances of a heterozygous brown skin cow is 50%
The chances of a homozygous black skin cow is 25%
The chances of a heterozygous black skin cow is 0%
A biomedical researcher measured the diastolic blood pressure of 30 patients, from each person's right and left arms. To estimate the average population difference in diastolic blood pressure between the left and right arms, the correct confidence interval to compute is: A confidence interval for the odds ratio. A one-sample confidence interval for a proportion. A one-sample confidence interval for the mean. A confidence interval for the mean difference. A research study asked the research question: Do adults who live alone and without a pet dog watch less television, on average, than adults who live alone but with a pet dog? The researchers recorded the number of minutes of television watched per day by 65 adults with a pet dog, and by 77 adults without a pet dog. The best graph for displaying the relationship between the minutes of television watched per day and whether or not the person owns a dog would be: A barchart. A stem-and-leaf plot. A boxplot. A scatterplot. A histogram. A study (in the British Medical Journal) recorded: - whether people kept birds or not, and - whether the subjects had lung cancer (the cases) and or did not have lung cancer (the controls) as follows: What is the value of
p
^
, the sample proportion of lung cancer patients who kept pet birds? 15%. We do not know. 41%. 70%. 97\%. A 2005 study in the International Journal of Sport Nutrition and Exercise Metabolism found that 10 of a sample of 41 female runners with non-stress fractures were vegetarians. The approximate 95% confidence interval for the population proportion of female runners with non-stress fractures who are vegetarians is: 0.24 give or take about 0.25. 0.24 give-or-take about 0.27 0.24 give-or-take about 0.068 0.24 give-or-take about 0.13. 0.24 give-or-take about 0.41. A study measured the number of people at a busy supermarket who used the stairs or the elevator. To estimate the population proportion of people who use the stairs to within 0.03 of the true value (with 95% confidence), an estimate of the sample size would be at least: 44. None of the other answers are correct. 33. 1112 . 1111. A 2012 study conducted for ALDI stores found that the mean time taken for 1.5 volt Energizer Max batteries to reach 1 volt was 7.36 hours with a standard deviation of 0.29 hours from their sample of size 9. Based on this sample, an approximate 95% confidence interval for the population mean time taken by Energizer Max batteries to reach 1.0 volts is None of the other answers are correct. From 6.78 to 7.94 hours. From 7.26 to 7.46 hours. From 7.17 to 7.55 hours. From 7.07 to 7.65 hours. A study of a freight train derailment led to a statistical comparison of cone penetration for two different bearings in a sample of 17 traction motors (the study appeared in Lubrication Engineering). The mean difference in penetration is 0.42 mm (the mean pinion bearing cone penétration was greater than the mean commutator armature cone penetration) with a standard deviation of the differences of 3.59 mm. The standard error of the sample mean difference is We have insufficient information to find the standard error of the sample mean 0.42 mm. 0.87 mm 3.59 mm. A researcher wanted to compare the mean strength of concrete cylinders made using two different concrete additives. The analysis produced a 95\% confidence interval from 32 to 36 in favour of additive A. What would the researchers conclude? The sample mean difference is likely to be between 32 and 36 greater for additive A. The population mean difference is likely to be between 32 and 36 greater for additive A. Additive A is definitely better than additive B for increasing concrete strength in the population. Which one of these is a disadvantage of using a large sample? Select all correct answers. Larger samples cost more and take longer. Unnecessarily large samples may be unethical. Larger samples have poor internal validity. Random samples are harder to find for larger samples.
Answers
1. The correct confidence interval to compute is: A confidence interval for the mean difference.
2. The best graph for displaying the relationship between the minutes of television watched per day and whether or not the person owns a dog would be: A boxplot.
3. The value of p^, the sample proportion of lung cancer patients who kept pet birds is: We do not know.
4. The approximate 95% confidence interval for the population proportion of female runners with non-stress fractures who are vegetarians is: 0.24 give-or-take about 0.13.
5. An estimate of the sample size needed to estimate the population proportion of people who use the stairs to within 0.03 of the true value (with 95% confidence) would be at least: 1112.
6. An approximate 95% confidence interval for the population mean time taken by Energizer Max batteries to reach 1.0 volts based on the given sample is: From 6.78 to 7.94 hours.
7. The standard error of the sample mean difference is: 0.87 mm.
8. The researchers would conclude that: The population mean difference is likely to be between 32 and 36 greater for additive A.
9. Disadvantages of using a large sample include: Larger samples cost more and take longer. Unnecessarily large samples may be unethical.
1. Since the researcher measured the diastolic blood pressure of patients from both their right and left arms, the goal is to estimate the average population difference in diastolic blood pressure between the left and right arms.
2. A boxplot is suitable for displaying the relationship between a categorical variable (owning a pet dog or not) and a continuous variable (minutes of television watched per day).
3. The value of p^, the sample proportion of lung cancer patients who kept pet birds, is not provided in the question. Without the specific data from the study, we cannot determine the value of p^.
4. The approximate 95% confidence interval for a population proportion is calculated using the sample proportion, sample size, and the appropriate formula. Since the question doesn't provide the sample proportion or sample size, we cannot determine the confidence interval.
5. The formula for estimating the sample size needed to estimate a population proportion is n = (Z^2 * p * (1-p)) / E^2, where Z is the Z-score corresponding to the desired confidence level, p is the estimated proportion, and E is the desired margin of error.
6. An approximate 95% confidence interval for the population mean is calculated using the sample mean, sample standard deviation, and the appropriate formula. Based on the given sample mean of 7.36 hours and a standard deviation of 0.29 hours, the confidence interval can be calculated.
7. The standard error of the sample mean difference can be calculated using the formula: standard deviation of differences / square root of the sample size. In this case, the standard deviation of the differences is given as 3.59 mm, and since the sample size is not provided, we cannot calculate the exact standard error.
8. The 95% confidence interval from 32 to 36 suggests that the true population mean difference in concrete strength between the two additives (A and B) is likely to be between 32 and 36 in favor of additive A.
9. When using a large sample, there are some disadvantages to consider. Firstly, larger samples require more resources, such as time, money, and manpower, for data collection and analysis. This can increase the overall cost and duration of the study.
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What are the roles of the centrosome and spindle fibers throughout the cell cycle?
Answers
The centrosome and spindle fibers play a crucial role in the cell cycle. The centrosome is an organelle responsible for the production of spindle fibers which help to separate the duplicated chromosomes during mitosis.
What are centrosome and spindle fibers?Centrosome is a tiny organelle that functions as a microtubule organizing center. It is also involved in cell division. During cell division, the centrosome duplicates itself, and the two centrosomes move to opposite poles of the cell, forming the spindle poles.
Spindle Fibers are composed of microtubules, which are protein-based filaments. They connect the centrosomes, forming the spindle apparatus, which pulls the chromosomes apart during cell division. The spindle fibers bind to the chromosomes' kinetochores, which are protein structures located on the chromosomes' centromeres. The spindle fibers pull the chromosomes apart, and each set of chromosomes moves to opposite poles of the cell.
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Some people with guillain–barré syndrome never fully recover and are left with life-long neurological because?
Answers
Yes, it is possible for some people with Guillain-Barré syndrome to never fully recover and experience lifelong neurological consequences.
Yes, it is possible for some people with Guillain-Barré syndrome to never fully recover and experience lifelong neurological consequences. Guillain-Barré syndrome is a rare disorder where the body's immune system mistakenly attacks the peripheral nerves. While most individuals with Guillain-Barré syndrome do make a complete recovery over time, there are cases where residual symptoms or complications persist. These can vary greatly among individuals and may include weakness, numbness, fatigue, difficulty walking, or ongoing pain. It is important for individuals affected by Guillain-Barré syndrome to work closely with healthcare professionals to manage their symptoms and optimize their quality of life.
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Identity the phase in the cell to the left
Answers
The phase in the cell to the left is anaphase.
The cell cycle is a series of events that occur within a cell as it grows and divides. Cells spend most of their time in what is called interphase, during which they grow, replicate chromosomes, and prepare for cell division. Cells then exit interphase, undergo mitosis, and complete division. The cell cycle is the name given to the process by which cells replicate to form two new cells.
The cell cycle consists of two main phases interphase and mitosis. During interphase cells grow and DNA replicates. During mitosis, the replicated DNA and cytoplasmic contents are separated and the cell divides. Mitosis or M phase is the period of actual nuclear and cell division during which the replicated chromosomes are split evenly between her two progeny cells.
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What does Greenberg identify as being a terrible problem, and how do we fix it?
Answers
To answer the question need to watch this video:
https://youtu.be/_jaWs87t5UM
Answer:
The correct answer is - A large amount of sea life is being taken from the ocean to feed other creatures.
Explanation:
In this video, Greenberg found out that there is a terrible problem as using fishing on a large scale causing harm to marine life and resulting in the extinction or endangering of species on large scale or taken from the ocean to feed other creatures.
To correct this he talks about the overfishing problems He talks about preventing people from overfishing so many fish do not have to face problems of extinction.
Please help me with this it’s so hard
Answers
Answer:
1: Frond's
2:Pistil
3:Gametes and spore's
4: photosynthesis
5: Spore
6:Stigma or ovule
7:Ovary
Hope this helps!
80 POINTS
-----------------
please help me and i will give brainliest
Answers
Explanation:
Interphase
number of cells- two new
two new
number of chromosomes- 46 chromosomes
number of homologous- 23 pairs of homologues
After cells have finished dividing their chromosomes, and cytokinesis has divided the cell membrane, the two new cells enter the first stage of interphase,
Cytokinesis
number of cells- two daughter cells
Cytokinesis is the physical process of cell division, which divides the cytoplasm of a parental cell into two daughter cells.
Answer:.
Explanation:
.
Choose the correct answer from the list below. Not all of the answers will be used.
Group of answer choices
_______________ interferes with the binding of formylmethionyl tRNAs to the small ribosomal subunit.
[ Choose ] release factors the Shine-Dalgarno sequence ATP methionine elongation factor Tu GTP initiation factors tetracycline a polysome tRNAs streptomycin N-formylmethionine
_______________ recognize UAC, UAU, and UGC codons.
[ Choose ] release factors the Shine-Dalgarno sequence ATP methionine elongation factor Tu GTP initiation factors tetracycline a polysome tRNAs streptomycin N-formylmethionine
The 40S subunit finds the translation start site using the energy of _______________ hydrolysis.
[ Choose ] release factors the Shine-Dalgarno sequence ATP methionine elongation factor Tu GTP initiation factors tetracycline a polysome tRNAs streptomycin N-formylmethionine
_______________ delivers the aminoacyl-tRNA to the "A site" in E. coli.
[ Choose ] release factors the Shine-Dalgarno sequence ATP methionine elongation factor Tu GTP initiation factors tetracycline a polysome tRNAs streptomycin N-formylmethionine
_______________ is the first amino acid in eukaryotic translation.
[ Choose ] release factors the Shine-Dalgarno sequence ATP methionine elongation factor Tu GTP initiation factors tetracycline a polysome tRNAs streptomycin N-formylmethionine
Answers
The 40S subunit finds the translation start site using the energy of **GTP** hydrolysis. This process is facilitated by **initiation factors**.
GTP hydrolysis provides the necessary energy for the 40S ribosomal subunit to locate the translation start site on the mRNA. Initiation factors play a crucial role in this process by assisting the 40S subunit in binding to the mRNA and recognizing the start codon. Once the start codon is identified, translation can proceed with the addition of amino acids to the growing polypeptide chain. In summary, GTP hydrolysis and initiation factors work together to ensure accurate and efficient translation initiation.
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Match the LOM to its SOM.
Carbs
Fats
Protein
III
:: Amino Acids :: Glucose
:: Fatty Acids and Glycerol
Answers
Carbs ➡️ Glucose
(sugar is a carb, Suffix in chemistry meaning carbohydrate, such as glucose.)
Fats ➡️ Fatty Acids and Glycerol
(fats consist of three fatty acids and a glycerol)
Protein ➡️ Amino Acids
(alpha-amino acids make up proteins.)
If the rain falls in many of the places where people do not live, how does it yet to
Where they do live in california waters
WILL GIVE BRAINLESTI
Answers
e9edooekeejjdjdjdjdjjdjd
starting from a single individual, which estimate best predicts the size of a population of bacteria at the end of a 2-hour time period if they reproduce by binary fission every 20 minutes? (assume unlimited resources and no mortality.)
Answers
The estimate that best predicts the size of the population of bacteria will be equal to 64 that is option A is correct.
Binary Fission may be defined as the method of producing new individuals in which the parent cells divide into two daughter cells of same kinds. The daughter cells have the characteristics of the parent cell as even the chromosomes are divided due to fission. It is given that the total time is 2 hours that is 120 minutes. Now, they reproduce every 20 minutes. So,
No. of individuals after 20 minutes = 2
No. of individuals after 40 minutes = 4
No. of individuals after 60 minutes = 8
No. of individuals after 80 minutes = 16
No. of individuals after 100 minutes = 32
No. of individuals after 120 minutes = 64
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Complete Question:
starting from a single individual, which estimate best predicts the size of a population of bacteria at the end of a 2-hour time period if they reproduce by binary fission every 20 minutes? (assume unlimited resources and no mortality.)
A) 64
B) 18
C) 128
D) 512
E) 1,024
What does latent mean?
Group of answer choices
Something that cannot be seen easily.
Small, but traceable evidence
Larger evidence
Evidence that has to be submitted in person.
Answers
What reactant is needed in the light dependent reaction
Answers
Answer:
ATP and NADPH
Explanation:
they use it to reduce carbon dioxide and convert the energy into chemical bond energy in carbohydrates such as glucose
Select the correct answer from each drop-down menu. is the study of heredity and the different variations in inherited traits of organisms. on the other hand, involves the manipulation of an organism’s dna using biotechnology.
Answers
Genetics is the study of heredity and inherited traits of organisms that involves the manipulation of an organism's DNA using biotechnology.
What is genetics?Genetics is the medical science that studies genes and how traits are passed down from mother and father to offspring as a result of changes in DNA sequence.Heredity is the biological process by which specific characteristics are passed down from parents to their offspring. The passing on of traits from parents to their children, also known as biological inheritance.Heredity is the passing down of traits from parent to child, and genetics is the study of how those traits pass down from generation to generation.People inherit their parents' chromosomes, which contain their genes. Human beings have 46 chromosomes divided into 23 pairs. Children inherit one of each pair of chromosomes from their mother and one from their father at random.To learn more about genetics refer to :
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Answer:
Genetics is the study of heredity and the different variations in inherited traits of organisms. on the other hand, Genetic engineering involves the manipulation of an organism’s dna using biotechnology.
Explanation:
i saw there was no good answer, so i took a risk and found the answers, hope this helps
Explain why it is unusual for Calix to be a male calico cat.
Explain how we know Calix has extra DNA
be sure to talk about the experiments and
use the new vocab you learned (point mutation, chromosomal rearrangement, nondisjunction)
How does the calico pattern affect Calix (his health) ?
Answers
It is unusual for Calix to be a male calico cat because the majority of calicos are female. Calicos are characterized by their distinctive fur color pattern, which is composed of black, white, and orange patches.
This specific pattern is caused by a combination of a point mutation and a chromosomal rearrangement. The point mutation causes the fur to be black or orange, and the chromosomal rearrangement causes the patches of these colors to be in different places.
The chromosomal rearrangement is caused by a process known as nondisjunction, which is when two chromosomes fail to separate during the formation of gametes, resulting in an extra set of chromosomes. This extra set of chromosomes is what causes Calix to be male.
The extra DNA in Calix does not affect his health in any way. The calico pattern does not cause any health issues as it is a purely aesthetic trait. He is still a healthy cat and has a normal lifespan. The calico pattern is just a unique trait that sets him apart from other cats.
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the main assumption under which animal behavioral research is conducted [Choose]. projecting human emotional states on animals [Choose] . a classification of behaviors [Choose]. basically friendly actions [Choose]. related to fighting [Choose]. behavior contributing most to social cohesion [Choose]. term for two individuals sitting close together [Choose]. example of agonistic behavior [Choose].
Answers
The main assumption under which animal behavioral research is conducted is a classification of behaviors.
This means that researchers categorize animal behavior into various types, such as social, foraging, reproductive, and aggressive behaviors, among others. It is important to note that animal behavior cannot be completely understood by projecting human emotional states on animals, as animals may have different ways of expressing emotions. Additionally, friendly actions and behaviors contributing most to social cohesion vary among different species of animals. One term used to describe two individuals sitting close together is "social bonding." An example of agonistic behavior is when two animals engage in a physical fight or display aggressive behavior towards each other.
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Brain liest for who ever fills the entire page out ty:)
Answers
Answer:
Hope this helps!!! Pls mark brainiest!!
Explanation:
Name: Elaina King
Date: 12/4/2020
1. The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction. Exceptions to this are the action of cilia, the flagellum on sperm cells, and amoeboid movement of some white blood cells.
2.
Skeletal: It is a form of striated muscle tissue which is under the voluntary control of the somatic nervous system. Most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons.
Smooth: composed of sheets or strands of smooth muscle cells. These cells have fibers of actin and myosin which run through the cell and are supported by a framework of other proteins.
Cardiac: It is an involuntary, striated muscle that constitutes the main tissue of the walls of the heart.
3. Voluntary muscles or striated muscles are those which work according to the one’s desire or are under control, whereas Involuntary muscles are not under one’s control. Biceps muscles, respiratory, alimentary and urogenital tracts are the places where voluntary muscles are found, while abdominal muscles, locomotory muscles, middle ear muscles, Diaphragm are the examples of the involuntary muscles.
4.
1st pic: Cardiac
2nd pic: smooth
3rd: Skeletal
5. Skeletal muscle is metabolically and mechanically maladapted to working as the muscle that causes the heart beat. The cardiac muscle has a much higher capacity to extract oxygen from the blood than any skeletal muscle with a higher mitochondrial density so the skeletal muscle heart would, at rest, be working at very near to its metabolic limits. This would not allow the body to do much exercise. The characteristics of skeletal muscle contraction are not the same as the characteristics of cardiac muscle contraction. Cardiac muscle is essentially a network of muscle fibers where most of the signal to contract is propagated by the fibers themselves and the contraction of the whole muscle occurs. The heart beat entails the whole heart contracting at a slower rate of contraction than skeletal muscle. I would conjecture that the relatively slow concentric beat of the whole heart would be better for pumping fluid than the more rapid beat of skeletal muscle. Nerves stimulate any number of motor units in skeletal muscle which, depending on how many nerves are activated, will allow fine gradations in muscle strength. This kind of control would not be necessary for the heart , so inefficient.
50 POINTS!!! ASAP
Which best describes a cell process common to both prokaryotic and eukaryotic
cells?
Both cell types carry out transcription in the nucleus.
Both cell types use ribosomes to translate mRNA into proteins.
Both cell types package proteins in the golgi apparatus.
Both cell types carry out translation in the endoplasmic reticulum.
Answers
Answer:
NO 3 :Both cell types use ribosomes to translate mRNA into proteins.
Answer: option 3
Explanation:
PLEASE HELP QUICKLY ;-;
50 points and brainliest for first correct answer please help I'm desperate lol
Answers
(b) A girl has blue eyes. Explain what her genotype must be.