Answers
Answer:
Cells are limited by their surface area to volume ratio and they come in many different shapes. A cell's function is determined, in part, by its shape.
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Answer:
Function
Explanation:
The shape of the cell, the organelles within it as well as how many of those organelles are present play a huge role in the cells function.
For example, muscles cells will have lots of mitochondria that are used for ATP production, needed in movement.
Lung cells will have ridges or groves in them that increase the cells surface area that make them much more effective at the diffusion of oxygen and carbon dioxide when breathing.
Related Questions
Pyruvate
19. Select All Compounds Generated By-Both Phosphoglycerate Kinase and Pyruvate Kinase in Glycolysis.
ADP
ATP
Glucose
NAD
NADH
Pyruvate
LLLLL
Answers
In glycolysis, pyruvate kinase, an enzyme that controls cell metabolism, catalyzes the transformation of phosphoenolpyruvate and ADP into pyruvate and ATP.
What Generated By-Both Phosphoglycerate Kinase?Pyruvate kinase (PK) and phosphoglycerate kinase 1 (PGK1) are the only two ATP-producing enzymes in the glycolysis system.
Phosphoenolpyruvate (PEP) and ADP are transformed into pyruvate and ATP by the rate-limiting glycolytic enzyme PK.
Therefore, chemical process that changes 1,3-diphosphoglycerate, a molecule generated when glucose is broken down, into a different molecule, 3-phosphoglycerate.
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DISCUSS FEATURES OF ARTHROPODS RESPONSIBLE FOR THEIR PHENOMENAL SUCCESS ON EARTH.
Answers
Answer: Arthropods are represented in every habitat on Earth and show a great variety of adaptations
Explanation:
why are mutations considered important in evolution
Answers
Mutations are considered important in evolution because they are the ultimate source of genetic diversity.
Mutations are alterations in the sequence of an organism's DNA, caused by radiation or toxins in the environment. They can also form spontaneously during DNA replication.Mutations can have a variety of impacts. These are frequently dangerous or have little or no impact. However, changes in DNA sequence can occasionally be helpful to the organism.Beneficial mutations that offer a survival benefit or reproductive success are more likely to be passed on to subsequent generations, increasing their frequency in the population over time. This accumulation of favorable mutations is a driving factor in the process of evolution.Without mutations, there would be no supply of new genetic information, and evolution would be greatly hampered.
Answer:
Mutations are one of the fundamental forces of evolution because they fuel the variability in populations and thus enable evolutionary change.
the first suggestion that chromosomes may physically exchange segments came from the microscopic identification of
Answers
The microscopic detection of synapsis led to the first hypothesis that chromosomes might physically exchange portions.
The Chromosomal Theory of Inheritance, which asserts that genes are located on chromosomes at specified positions, advances our understanding of genetics. The roles and locations of alleles have been determined by scientists based on this notion. Recombination between homologs. Before the first division of meiosis, at the chiasmata, when chromatids come in contact with one another and may exchange segments, Frans Janssen made his observations in 1909. He proposed that chromosomes physically interchange parts and alleles become dissociated. According to the chromosome theory of inheritance, genes on chromosomes consistently passed by gametes regulate inherited features, sustaining genetic continuity from generation to generation. Mendel's observations and the chromosomal theory of heredity concur.
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What is the purpose of the Terra satellite? O A. To monitor conditions on Earth B. To identify near-Earth objects C. To search for planets in other solar systems D. To observe the movement of the moon
n e w a. p. e. x. 2020
Answers
Answer:
to monitor conditions on earth
Explanation:
To monitor conditions on Earth is the purpose of the Terra satellite. Therefore, the correct option is option A.
An artificial object that is purposefully placed into orbit around a celestial body, most frequently the Earth, is referred to as a satellite. It can be either manned or unmanned, and depending on how it is made and how it works, its purpose can be very different. Satellites have revolutionised many elements of our daily lives and have become essential parts of modern technology. Satellites come in a variety of varieties, each with a special function. Long-distance communication is made possible, for instance, by communication satellites that transfer signals between ground stations. To monitor conditions on Earth is the purpose of the Terra satellite.
Therefore, the correct option is option A.
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In response to electrical stimulation of a particular brain region, a rat shows increased blood pressure and heart rate, dilation of the pupils, erection of the hair on the back, arching of the back, and biting at the air. Which region could the electrode be stimulating
Answers
Answer:
The brain stem is responsible for increased blood pressure, HR etc,
Explanation:
It is made up of the mid brain, the Pons, and the Medulla.
While the Pons serve as the neurological bridge between the brain regions e.g the cerebrum and cerebellum to conduct and control certain responses the Medulla controls involuntary activities.Thus the involuntary activities listed above are controlled by the medulla.
Thus the activities of the rats which involves the dilation of pupils, erection of hair, are controlled in the pons. While increases blood pressure and the H.R are under the medulla.
Question 5: A tall pea plant (TT) is crossed with short pea
plant (tt)
Given: T. is the dominant allele for tall pod shape
t: is the recessive allele for short pod shape
Genotypes:
Phenotypes
Ratio:
Question 6: A cross between 2 pea plants: one with green
Answers
Answer:
Genotype = 1TT, 2Tt, 1tt
Ratio = 1 : 2 : 1
Phenotype = 3 tall, 1 short
Ratio = 3 : 1
Explanation:
Draw the Punnett square for the F₁ generation.
Genotype = 100% Tt
Phenotype = 100% tall
Next, draw the punnett square for the F₂ generation.
Genotype = 1TT, 2Tt. 1tt
Ratio: 1 : 2 : 1
Phenotype = 3 tall, 1 short
Ratio = 3 : 1
A mother is feeding her infant a cultural dish that contains honey. How do you manage this situation in a culturally sensitive way while considering the safety of her infant?
Answers
The situation in which a mother is feeding her infant a cultural dish that contains honey has to be taken with great consideration. This is because it is a matter of the safety of an infant.
What are the steps required for the safety of infants?The steps required for the safety of infants are as follows:
Make a small diet plan for the infant.Do not leave your infant alone on the table, sofa, chair, etc. Always put your baby in a safe place when you are not able to hold him properly.Always follow systematic orders for vaccination.Ensure your child is hydrated all the time.Make possible events to prevent the entry of pathogens.In this situation, you have to acknowledge to the mother that this practice is not safe for the health of your infant and try to introduce some of the negative aspects of this action. Also, warn her not to proceed with this action in the future because child safety is of utmost importance.
Therefore, the situation in which a mother is feeding her infant a cultural dish that contains honey has to be taken with great consideration.
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Earthquakes and volcano eruption are rare events is this true or false
Answers
true
which soil particles is so small that it always stays suspended and will create "murky" waters?
A. Sand
B. Silt
C. Clay
Answers
Answer:
C
Explanation:
underwater mountain range
Answers
Answer:
What is a mountain range
Which is not likely to be studied by a biologist?
A. plants
B. clouds
C. animals
D. swamps
Answers
Answer: Biologists don't study clouds
Explanation: Biologists study humans, plants, animals, and the environments they live in
What is the final product of transcription?
A gene
An amino acid
An mRNA molecule
A stop code
here is the paragraph to read from:
Transcription is the process by which an RNA copy of a gene sequence is created. This copy, known as the mRNA, travels from the cell nucleus to
the cytoplasm. There, it directs the synthesis of the protein. The base code in the mRNA controls the order of the amino acids in the protein.
There are 20 amino acids used to make proteins and different codes for each acid. The tRNA reads the code. Then it brings a specific amino acid to
attach to the growing chain of amino acids. Each tRNA carries only one type of amino acid. It only recognizes one specific code. tRNA is released
from the amino acid until it comes to a stop code. Then the protein is set free from the ribosome.
Answers
Answer:
An mRNA molecule
Explanation:
Transcription is a process by which the information stored in a specific fragment of DNA called 'gene' is used to produce a complementary RNA molecule, usually a messenger RNA (mRNA). Subsequently, this mRNA is used as template to produce a polypeptide chain (i.e., a sequentially ordered amino acid chain) through the process of translation. A stop codon, also known as termination codon, is a triplet of nucleotide bases within an mRNA that signals the end of the protein when it is synthesized in the ribosome. There are three stop codons (UAG, UAA, and UGA) that are capable of stopping protein synthesis.
A population of Poison dart frogs can be red (RR), orange (Rr) or yellow (rr). The allele frequency of the mainland is R: 0.5 r. 0.5. A small
group of the frogs moves to an island off the mainland. If the group is composed of 4 red and one orange frog, what would you expect to
happen to the allele frequency?
A. Increase towards the R allele
B. Increase towards the r allele
C. Stay the same as the mainland
D. Frequency of both alleles would decrease
Answers
Answer:
A
Explanation:
it will increase with a 4:1 ratio
As per the given scenario, the allele frequency will increase towards R allele. The correct option is A.
What is allele frequency?The number of times the allele of interest is observed in a population is divided by the overall number of copies of all the alleles at that particular genetic locus in the population to calculate the allele frequency.
In the given scenario, as group of the frogs moves to an island off the mainland, the allele frequency of R will increase.
Thus, the correct option is A.
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Which of the following factors of safety and effectiveness considers the distance of the weight or resistance from the joint?
a. biomechanics
b. momentum
c. alignment
d. stability
Answers
Answer:
C.
Explanation:
I took the test
true or false if you click on the name of a structure you identified incorrectly or correctly you will be taken to the module in APR where you can review this structure
Answers
Answer:
True.
Explanation:
When you are given a given structure and you ick on it to know if its correct or wrong you will be taken to a module on APR where u can review this structure and see clearly if it's right or wrong. That is how the website as be programmed. Once you click on it, u are automatically directed to APR to review and clarify your answers.
Based on the data in the tables above, which of the following statements provides the best prediction for the boiling
point of NaCl?
(A)
(B)
(C)
(D)
NaCl will have a lower boiling point than NaF because the coulombic attractions are weaker in NaCl than in
NaF.
NaCl will have a boiling point between that of NaF and MgO because the covalent character of the bonds in
NaCl is intermediate between that of MgO and NaF.
NaCl will have a higher boiling point than MgO because the ions are spaced farther apart in NaCl.
NaCl will have a higher boiling point than MgO because the energy required to transfer electrons from the
anion to the cation is larger in NaCl than in MgO.
Answers
Answer:
NaCl will have a lower boiling point than NaF because the coulomb jc attractions are weaker in NaCl than in NaF
Explanation:
Because the ions in NaCl are further distant from one another than those in MgO, NaCl will have a higher boiling point.
Why is the boiling point of nonane so high?NaCl has a greater boiling point than MgO because its ions are wider apart from one another.Due to its longer carbon chain than octane, nonane will have a higher boiling point. Since octane branches less than 2,2,3,3-tetramethylbutane, it has a bigger "surface area" and stronger van der Waals forces, which will cause it to boil at a higher temperature.London dispersion forces are stronger in liquid I2 because I2 molecules have more polarizable electron clouds than Br2 molecules do.Distillation. Distillation is a process of separation based on variations in the boiling points of compounds, as explained in analysis: Interference removal: Distillation.The fact that larger molecules of the same kind have greater boiling points than smaller ones suggests that dispersion forces rise with mass, number of electrons, number of atoms, or some combination of these.To learn more about MgO, NaCl will have a higher boiling point refer to:
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Why are conservation efforts necessary
Answers
Biological conservation is important for ecosystem functioning. How ecosystems works is the reason behind all the commodities we enjoy. For example, due to dense forests, a lot of water is filtered trhough soil. This water replenishes underground streams, which ultimately allow us to filter that water. It's like forests are a giant and very effective mechanism to catch rain water. Besides, vegetation is pretty important for climate regulation in land, since it produces the oxygen we breath and gives shade from the sun. Any economical develpment could provide the benefits forests give. Noteworthy, forests are able to proliferate and endure, thanks a lot of interctions with microorganisms, invertebrates (like ants or bees, important pollinators). These are a few examples, why biological conservation, relies at the heart of our own population conservation.
DNA
connects to
DNA Replication, because...
Answers
Answer: replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell. ... Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.
Explanation:
One of the reasons that free oxygen in our atmosphere is important to the development and maintenance of life on Earth is because oxygen:
Answers
One of the causes that free oxygen in our environment is essential for the development and supervision of life on Earth is because oxygen: can form ozone and also help to block some UV radiation.
What is the primary source of oxygen on earth?Scientists evaluate that approximately half of the oxygen exhibit on Earth arrives from the ocean. Majority of this production is from oceanic planktons like drifting plants, bacteria, and some algae. All these have the capability to photosynthesize.
Why was oxygen absent in early atmosphere?Oxygen is yielded by plants through the process of photosynthesis. In the early times, there was no vegetation and plants, which is why no oxygen was present in the early atmosphere.
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Which of the following correctly expresses the number below in scientific
notation?
0.000923
Answers
Answer:
9.23×10^-4
Explanation:
Move the decimal point to make 0.000923 a new number between 1 and 10. Because our original number is less than one, we move the decimal point to the right. Drop any zeros in front of the number. Keep track of how many times you move the decimal point
and is always going to be the number you co.e up with ×10 and how many times you moved the point left or right
right= +
left= -
what are chromatin threads
Answers
Answer:
Chromatin thread is a mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division.
5. Imagine that you encounter two color morphs of S. marcescens in natural environment. If you do not have any prior knowledge on the prodigiosin synthesis pathway of these Serratia species, will you consider the red and white Serratia colonies as one species or two species? Do you think we should designate species based on morphological traits or genetic differentiation? Without limiting to the S. marcescens experiment, provide evidence and example to support your claim.
Answers
Answer:
According to the given question that without prior knowledge on the prodigiosin synthesis pathway of these Serratia species, and we experience two different color morphs of the species. So, there is given or known preliminary morphological basis we will consider them different two different colonies. These can be identify only after genetically identify or study.
The morphological characterstics of the organism and the genetic identification both are equally important. So Giving any one more importance over other is not logical.
Morphologically we can differentiate the color of the colonies of mutants. The mutant serratia sp. are known for eficient biosynthesis of prodigiosin, Thus on the basis of color characteristics of their colonies when grown on peptone glycerol medium we can identify.
21. A soft sedimentary rock, like limestone, can change over time into a hard metamorphic rock
like marble. What processes must have acted on the limestone over the years to change this
sedimentary material into hard metamorphic material?
Answers
Answer:
The heat generated by the magma chamber has changed these sedimentary rocks into the metamorphic rocks marble, quartzite, an hornfels. Regional Metamorphism occurs over a much larger area. This metamorphism produces rocks such as gneiss and schist. ... They are generally as hard and sometimes harder than igneous rocks.
If sedimentary rock, pressed inside the crust and treated with a high pressure and temperature, then it can change over time into a hard metamorphic rock.
What is a sedimentary rock?A sedimentary rock is mad up by the decomposition of minerals and other organic matter near the water surface.
These rocks are soft, such as limestone.
These rocks can turn into hard metamorphic rocks if they came in contact with high pressure and temperature.
Thus, by high pressure and temperature, the sedimentary rock change into hard metamorphic rock.
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how does evolution operate via the gene pool of population
Answers
Answer:
The composition of a population's gene pool can change over time through evolution. This can occur by a variety of mechanisms, including mutations, natural selection, and genetic drift. The result is a gene pool that is altered to be attuned to the needs of the population's specific environment.
Explanation:
which of the following accurately describes the ph scale
Answers
The most accurate description of the pH scale is that the lower pH correlates with a higher concentration of hydrogen ions in solution. Thus, the correct option is A.
What is pH scale?The pH scale is used for the measurement of how acidic an object is. Objects which are not very acidic are called as basic substances. The scale of pH has values ranging from zero which is the most acidic value to 14 which is the most basic value. The pure water has a pH value of 7, this denotes that it is a neutral substance. pH can be defined as the power of hydrogen ions present in the solution.
A lower pH value correlates with a higher concentration of the hydrogen ions in that solution. A higher pH value correlates with a higher concentration of hydrogen ions in the solution. And, the solutions with a pH value less than 7 are said to be basic.
Therefore, the correct option is A.
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Your question is incomplete, most probably the complete question is:
Which of the following statements accurately describes the pH scale?
A. A lower pH correlates with a higher concentration of hydrogen ions in solution.
B. A higher pH correlates with a higher concentration of hydrogen ions in solution.
C. Solutions with a pH less than 7 are said to be basic.
D. Solutions with a pH greater than 8 are said to be acidic
E. It measures the tonicity of a solution
How can gases enter and leave the atmosphere? Give at least 2 examples referencing the type of gas.
Answers
Answer:
Carbon dioxide and oxygen cannot pass through the cuticle, but move in and out of leaves through openings called stomata (stoma = "hole"). Guard cells control the opening and closing of stomata. When stomata are open to allow gases to cross the leaf surface, the plant loses water vapor to the atmosphere. Photosynthesis also removes CO2 from the atmosphere and replaces it with O2. Respiration takes O2 from the atmosphere and replaces it with CO2.
True or false wind causes erosion by blowing heavier rocks and leaving behind sand and soil.
Answers
Answer:
True
Explanation:
Wind Is a type of erosion element
Which of the following is an example of erosion?
Answers
Answer:
A
Explanation:
I think A is the example of erosion
Which relationship is the arrow pointing to in the
cladogram?
A. the common ancestor for X and Z
B. the common ancestor for X and Y
C. the common ancestor for X, Y, and Z
D. the common ancestor for Y and Z
The answer is B on edge 2020
Answers
That isB the common ancestor for X and Y since that's where the branching of the two species occurs
Answer:
b its right
Explanation: