slay, MC hat is the purpose of mitosis? How many cells are made in mitosis? How many chromosomes does each to dividresor obega lasis, cell have at the end of mitosis? 3. On the bottom of this page, Draw each of the stages of mitosis, labeling each stage and any important features that are visible (chromosomes, centrioles, spindle fibers, nuclear envelope/membrane, etc...) 4. Distinguish between diploid and haploid cells. 5. What is cancer and how is it related to the cell cycle 5. What is the difference between asexual and sexual reproduction? Give examples of each.
Answers
Answer:
The purpose of mitosis is to produce two genetically identical daughter cells from a single parent cell. During mitosis, the genetic material of the parent cell is equally divided into the two daughter cells. Each daughter cell receives a complete copy of the genetic material, which consists of a specific number of chromosomes. The number of chromosomes in a cell is determined by the organism it belongs to. For example, human cells have 46 chromosomes, while fruit fly cells have only 4 chromosomes.During mitosis, the parent cell undergoes several stages to ensure that each daughter cell receives a complete and accurate copy of the genetic material. These stages include interphase, prophase, metaphase, anaphase, and telophase.
In interphase, the cell grows and replicates its DNA. In prophase, the nuclear envelope breaks down and the chromatin (uncoiled DNA) begins to condense into visible chromosomes. In metaphase, the chromosomes line up in the center of the cell. In anaphase, the chromosomes are pulled to opposite ends of the cell. In telophase, a new nuclear envelope forms around each set of chromosomes and the cell divides into two daughter cells.
Diploid cells are cells that contain two sets of chromosomes, one set inherited from the mother and one set inherited from the father. These cells are typical of most organisms and are involved in sexual reproduction. Haploid cells, on the other hand, contain only one set of chromosomes. These cells are involved in asexual reproduction, such as in the production of spores by fungi.
Cancer is a disease that is caused by uncontrolled cell division. In cancer, cells divide and grow in an uncontrolled way, forming a mass of tissue called a tumor. This can happen when the normal processes that control the cell cycle go wrong. For example, cells may divide and grow even when they are not supposed to, or they may avoid programmed cell death (apoptosis). This can lead to the formation of a tumor that can invade and damage nearby tissues, and potentially spread to other parts of the body.
Asexual reproduction is a type of reproduction in which a single organism can produce offspring without the involvement of another individual. In asexual reproduction, the offspring are genetically identical to the parent because they are produced from a single parent cell that divides to produce multiple identical daughter cells. Examples of asexual reproduction include budding in yeast, fragmentation in starfish, and binary fission in bacteria.
Sexual reproduction, on the other hand, involves the fusion of two cells, called gametes, to produce a new organism. In sexual reproduction, the offspring are genetically diverse because they are produced from the combination of genetic material from two parents. Examples of sexual reproduction include the production of seeds in plants and the fertilization of eggs by sperm in animals.
Related Questions
what mammal has the largest brain relative to its body size?
Answers
Answer:
The noble tree shrew
Explanation:The tree shrew's brain is much larger compared to its body. 10 percent of its body weight is brain mass.
What types of additional evidence are created when a body is dismembered?
Answers
The types of additional evidence created when a body is disembered are :
The proof of Physical assualt The proof of the use of dangerous weaponsWhat happen when a body is dismembered?When a body is disembered in a crime it provides the evidence that there was a physical assault unleashed on the victim by the offender and it also prove that dangerous weapons such as knives and axes or guns where used to carry out the crime.
Hence we can conclude that The types of additional evidence created when a body is disembered are : The proof of Physical assualt and The proof of the use of dangerous weapons.
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According to vsepr theory, which one of the following molecules is trigonal byramidal?
a. sf4
b. xef4
c. nf3
d. sf6
e. pf5
Answers
Based on valence electrons, VSEPR theory specifies the molecule geometry. The repulsion between the electron pairs determines where the bonded atom is located.
According to VSEPR theory, PF5 molecules are trigonal pyramidal.
How does the VSEPR theory work?Founded on the digit of valence shell electron bond pairs between the atoms in a molecule or ion, the valence shell electron pair repulsion (VSEPR) theory is a model used to predict 3-D molecular shape. According to this view, electron pairs choice place themselves to reduce the results of their joint aversion. The geometry of individual molecules can be predicted using the chemical model known as the valence shell electron pair repulsion hypothesis based on the number of electron pairs that surround the core atoms of the molecules. In honor of its two primary creators, Ronald Gillespie and Ronald NY Holm, it is sometimes known as the Gillespie-NY Holm theory. In chemistry, the number of electron pairs surrounding a core atom can be used to predict the three-dimensional geometries of molecules using the valence shell electron pair repulsion (VSEPR) theory.Therefore the correct answer is option e. pf5
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Which term describes the area where apopulation lives?A. Age StructureB. Migration LocationC. Growth rateD. Geographic Distribution
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Commonly the place where a population lives is described was a habitat, forming a biological community, however there is not an option with that term, but between the present terms the one that is closer to a term for the area where a population lives is D. Geographic Distribution, since all the other alternatives are related to different factors of ecological studies.
Describe each body systems’ parts and its role. • Digestive, Respiratory, Circulatory, Excretory, Immune, Nervous,
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Answer:The circulatory system consists of your heart and blood vessels. The heart’s job is to pump blood throughout your body.
The left side of the heart takes oxygen-rich blood from the lungs and pumps it to other parts of the body to use. The right side of the heart pumps blood to the lungs to add oxygen to it.
The heart has a very busy job! When you are resting, your heart pumps between 60-100 times each minute. When you are exercising, it pumps much faster to deliver blood to your muscles.
The heart is responsible for getting the oxygen to your muscles, but it is the respiratory system’s job to provide the oxygen. This means that the circulatory system is directly linked to the respiratory system.
The respiratory system gathers oxygen and removes carbon dioxide.
simple diagram of the lungs and respiratory system for kids
The main part of the respiratory system is the lungs. It is the lungs’ job to bring air into and out of the body. Oxygen from the air you inhale moves through small blood vessels and enters the bloodstream. It then hitches a ride on red blood cells and travels to all parts of the body.
The blood coming back to the lungs contains carbon dioxide. When you exhale, you remove carbon dioxide which your body does not need anymore.
The digestive system breaks down food to release nutrients.
simple diagram of the digestive system for kids
Digestion begins when we break food down into little pieces in our mouth with the help of teeth, the tongue and saliva.
After that, food travels down the esophagus and into the stomach, where it’s further broken down by stomach acids.
From the stomach, it heads to the small intestine. Here, your body removes nutrients it needs from food, and sends the nutrients to parts of the body through the circulatory system.
Finally, the digested food is sent to the large intestine, out of your body… and beyond!
RESPIRATORY SYSTEM
PRIMARY PURPOSE: Breathing - taking in Oxygen, pushing out Carbon-Dioxide (CO2)
PRIMARY ORGANS: Lungs, trachea (tube going from lungs to nose/mouth)
(1) Inhales (breathes in) Oxygen - good for the body - gives it to the Circulatory System to be transported
throughout the body through the blood.
(2) Exhales (breathes out) Carbon-Dioxide (CO2) - lungs get this gas from the blood (Circ. Sys.) and pushes it out of the body
NERVOUS SYSTEM
PRIMARY PURPOSE: Control Center: transports messages to/from the Brain!
PRIMARY ORGANS: Brain, nerves, neurons, spinal cord (main connection coming out of the brain to the rest
of the body’s nerves)
(1) Sends messages to the entire body from the Brain.
(a) Involuntary messages/signals tell the body parts to do regular actions for body to work; We don’t think
about these actions; like breathing, heart-pumping, digestion, etc
(b) Voluntary messages/signals tell the body parts to do something particular; We think about these
actions; LIKE: We decide to raise our arms; We choose words to speak; We choose to look in a certain
direction; etc.
(2) Receives messages from the 5 senses (hearing, touch, taste, seeing, smelling) takes those to the Brain and
the brain processes the new information - and how to react if necessary.
Immune System
The body needs to defend itself against germs and infection. The immune system is the body’s shield against unfamiliar things like viruses and parasites. When the immune system detects something foreign, it will attack it to protect the body. For example, if bacteria get into your body through your mouth, the immune system would send white blood cells to kill the invading germs. Sometimes the white blood cells win and you don’t get sick. Other times, the white blood cells aren’t able to stop an illness and you will get sick. If this happens, the white blood cells will keep fighting until you are well again.
Excretory System
As the body performs its various functions, it creates waste products that have to be removed. The body has to have a way to remove both liquid and solid waste to stay healthy. The kidneys are in charge of keeping the right balance of fluids and salt in the body. After filtering, the kidneys move waste fluids out of the body as urine. The excretory system also removes waste when you breathe out and when you sweat. Defecation is the way the body removes solid waste.
The Excretory System (PDF): The excretory system helps maintain the proper balance of water and salts in the body.
Human Excretory System (PDF): The excretory system is responsible for removing wastes from the body using organs including the kidneys and the liver.
Excretory (Urinary) System (PDF): Liquid waste leaves the body through the urinary system, which includes the kidneys, bladder, and urethra.
Explanation:
trust
An organism that exhibits a head with sensory equipment and a brain probably also _____. A. is bilaterally symmetrical B. has a coelom C. is segmented D. is diploblastic
Answers
Option (A) is bilaterally symmetrical is correct.
An organism that exhibits a head with sensory equipment and a brain probably also is bilaterally symmetrical.
What is mean by bilateral symmetry?Symmetry where the same anatomical components are positioned on either side of a median axis, allowing for only one plane to split the subject into two nearly identical halves.Including Chordates, Arthropods, Molluscs, and Annelids.They are able to move ahead in a straight line because they have bodies that are bilaterally symmetrical (the same on both sides along an axis). Animals who could go from point A to point B swiftly and effectively would have been more successful in evolutionary history and would have been selected for over those that couldn't. The "head" and "tail" (anterior vs. posterior), front and back (dorsal vs. ventral), and right and left sides are all present in animals with bilateral symmetry. All real animals are bilaterally symmetrical, with the exception of those possessing radial symmetry.Learn more about symmetry here:
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briefly describe the hormones that the anterior pituitary and posterior pituitary release. how does the anterior pituitary differ from the posterior pituitary?
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The anterior pituitary and posterior pituitary are two parts of the pituitary gland, a small gland located at the base of the brain, which releases various hormones.
Here is a brief description of the hormones they release and the differences between the two:
Anterior pituitary hormones:
1. Growth Hormone (GH): Stimulates growth and cell reproduction in the body.
2. Thyroid-Stimulating Hormone (TSH): Stimulates the thyroid gland to produce thyroid hormones.
3. Adrenocorticotropic Hormone (ACTH): Stimulates the adrenal cortex to produce cortisol and other hormones.
4. Follicle-Stimulating Hormone (FSH): Stimulates the growth of ovarian follicles in females and sperm production in males.
5. Luteinizing Hormone (LH): Triggers ovulation in females and testosterone production in males.
6. Prolactin (PRL): Stimulates milk production in females after childbirth.
Posterior pituitary hormones:
1. Antidiuretic Hormone (ADH): Regulates water balance in the body and increases water reabsorption in the kidneys.
2. Oxytocin: Stimulates uterine contractions during childbirth and milk ejection during breastfeeding.
The anterior pituitary differs from the posterior pituitary in that it synthesizes and releases hormones, whereas the posterior pituitary stores and releases hormones produced by the hypothalamus. The anterior pituitary hormones are released in response to signals from the hypothalamus, while the posterior pituitary hormones are directly released upon nerve stimulation from the hypothalamus.
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given that about 25% of the mammalian genome is associated with genes, including introns and regulatory sequence, what would be the approximate average length of dna per gene if the genome contained 20,000 genes?
Answers
If the genome contained 20,000 genes, the average length of DNA per gene will be 40,000 base pairs.
What is the average length of DNA per gene?Only 2.5% of the human genome is protein-coding. Introns make up the remaining 97.5%. The male nuclear diploid genome is 6.27 Gigabase pairs (Gbp), 205.00 cm (cm) long, and 6.41 picograms in weight (pg). Female measurements are 6.37 Gbp, 208.23 cm, and 6.51 pg.
For a 25% mammalian genome with 20,000 genes, the total number of base pairs, which is the length of DNA per gene, will be approximately double the amount of genes contained in the genome, in this case 40,000.
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concerned about a skin mole that has increased in size and darkened in color, a man visits a dermatologist. based on a biopsy, the mole is diagnosed as melanoma, a form of cancer. a genomic analysis reveals a mutation in the braf gene, a commonly mutated gene in melanoma. the braf gene is the wild type in surrounding noncancerous cells. these data are evidence that
Answers
The data suggest that the man's melanoma is a result of a mutation in the braf gene, which is commonly mutated in melanoma.
This mutation is not present in the surrounding noncancerous cells, indicating that it is specific to the cancerous cells. The increase in size and darkening in color of the mole were likely due to the cancerous growth. This diagnosis highlights the importance of monitoring skin moles for changes in size, shape, and color and seeking medical attention if any concerning changes occur. Early detection and treatment of melanoma are crucial for successful outcomes. based on the information provided, the mole's increase in size and darkened color, along with the biopsy results, indicate that the man has melanoma. The genomic analysis revealing a mutation in the BRAF gene, which is commonly associated with melanoma, further supports this diagnosis. The fact that the BRAF gene is the wild type in surrounding noncancerous cells suggests that this mutation is specifically contributing to the development and progression of the melanoma.
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If proper precautions are taken, mining will never cause damage to the
surrounding area and environment*
true
false
Answers
Answer:
False
Explanation:
Mining will still be causing environmental damage regardless of precautions taken. However proper precautions can ensure that the workers and surrounding civilization face less risk from mining operations. It can also reduce the damage that is caused.
Describe the general functions of the major systems of the human body.
Answers
Answer:
Integumentary System: acts as a barrier to protect the body from the outside world (ie. skin, hair, and nails)
Circulatory System: carries oxygen and nutrients to cells, carries waste away from cells (ie. heart and blood vessels (veins and arteries))
Digestive System: converts food into molecules that can be used by cells (ie. mouth, esophagus, stomach, small intestine, large intestine)
Respiratory System: provides oxygen to the blood and removes carbon dioxide from the body (ie. nose, mouth, pharynx (throat), trachea, and lungs)
Immune System: fights off illness and disease (ie. lymph nodes, white blood cells, and spleen)
Muscular System: allows for movement (ie. cardiac muscles, skeletal muscles, and smooth muscles)
Nervous System: coordinates all body functions, sends signals to and from all parts of the body (ie. brain, spinal cord, and neurons)
Skeletal System: support the body, protect internal organs, store minerals (ie. bones and joints)
What makes a substance an infectious agent and a target for your immune system? What physical barriers keep infectious agents out of the body?
Answers
The skin, nasal mucosa, perspiration, cerumen, mucus, and gastric juice are examples of natural barriers. Moreover, the regular flow of urine flushes bacteria into the urinary system.
How does the human body's physical, chemical, and biological defences to disease look like?Pathogens are literally blocked from reaching the body through mechanical barriers, namely the skin, mucous membranes, and body substances such tears & urine. Pathogens on bodily surfaces are killed by chemical barriers, such as the microbes in saliva, perspiration, and sperm.
What are the five physical barriers?Time, Location, Space, Temperature, and Noise are the main environmental and physical constraints. Some of these are simple to change, while others could prove to be challenging barriers to good communication.
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Extend your thinking: When you think of the word “respiration,” you might think about the process of breathing, which is actually called ventilation. (The respiratory system consists of the windpipe, lungs, etc.) How is breathing related to cellular respiration? (Hint: Think about both the inputs and the outputs of cellular respiration.)
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Answer:
When you breathe in, you obtain the cells needed to perform cellular respiration.
Explanation:
What did Lamarck believe about the passing of traits to offspring? Explain why he was right/wrong?
Answers
Answer:
He believed traits changed/acquired through an indivual's lifetime could be passed down to offspring
Explanation:
This is basically evolution, living things aquire things that help them survive and pass it down to their offspring.
asexual reproduction can be a disadvantage to a population if
Answers
Answer:
it can be a disadvantage to population because it produces many offsprings which can lead to high increase in population.
1. Water-storing plants and deeply rooted shrubs are plants that characterize ________. Group of answer choices deserts savanna chaparral tropical forests 2. Ecology is the study of ________. Group of answer choices human effects on the environment life interactions between organisms and their environments interactions between humans and other species 3. What is a population? Group of answer choices a community as well as all the abiotic factors in a particular geographic area all of the organisms of a species existing at a particular time a group of organisms of the same species living in a particular geographic area a group of organis 4. ________ is a critical abiotic factor that contributes to plant growth in savanna ecosystems. Group of answer choices Rain Drought Fire Wind 5. Which biome is one of the most biologically productive of all biomes? Group of answer choices open oceans estuaries temperate grasslands coniferous forests
Answers
The ecosystem is an environment made up of light, radiation, chemicals, gasses, temperature, wind and soil. These are abiotic components that make up the environment and can vary from marine to terrestrial. Abiotic factors are the non living aspects while biotic are the living aspects.
Ecology studies how biotic factors interact with their environment. Fire as an abiotic factor is beneficial to plant growth in the savannas. For esturies, they are the most biollogically productive biomes.
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the outcome of a single crossover between nonsister chromatids in the inversion loop of an inversion heterozygote varies depending on whether the inversion is of a pericentric or paracentric type. what differences are expected? the outcome of a single crossover between nonsister chromatids in the inversion loop of an inversion heterozygote varies depending on whether the inversion is of a pericentric or paracentric type. what differences are expected? paracentric inversions produce four chromatids with one centromere each, while pericentric inversions produce an acentric and a dicentric chromoatid (both inviable). pericentric inversions produce only two genetically balanced products, while paracentric inversions produce no genetically balanced chromatids. pericentric inversions produce four chromatids with one centromere each, while paracentric inversions produce an acentric and a dicentric chromoatid (both inviable). paracentric inversions result in two dicentric chromatids and two acentric chromatids, while pericentric inversions result in four chromatids with one centromere each. pericentric inversions result in four genetically unbalanced chromatids, while paracentric inversions result in four genetically balanced chromatids.
Answers
The outcome of a single crossover between nonsister chromatids in the inversion loop of an inversion heterozygote differs depending on whether the inversion is of a pericentric or paracentric type. In a pericentric inversion, four chromatids with one centromere each are produced, but these are all genetically unbalanced.
In contrast, a paracentric inversion results in four chromatids with two centromeres each; two of these chromatids are dicentric, and two are acentric, but all four are genetically balanced.
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What happens when a cell is placed in a 0.3 solution
...
Answers
Answer:
If red blood cells are placed in a 0.3 M NaCl solution, there is little net osmotic movement of water, the size and shape of the cells stay the same; the NaCl solution is isotonic to the cell.
Explanation:
what's the most common mineral in a cell phone ?
Answers
Explanation:
Tantalum, found in the mineral columbite-tantalite, is used in the wires and connectors of mobile phones....
The intensity of sunlight on Earth is affected by
A.) the mass of Earth
B.) the speed of Earth
C.) the number of rotations of Earth
D.) the curved surface of Earth
Answers
Answer:
The correct answer is D.) the curved surface of Earth.
Explanation:
The intensity of sunlight on Earth is affected by the curved surface of Earth, which causes the sunlight to spread out over a larger area. As a result, the intensity of sunlight is less at any given point on Earth's surface than it would be if Earth had a flat surface. This also explains why the poles receive less sunlight than the equator, as sunlight is spread out over a larger area near the poles due to the curvature of the Earth.
Factors such as the mass of Earth, the speed of Earth, and the number of rotations of Earth do not directly affect the intensity of sunlight on Earth.
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
The cardiovascular system consists of the heart, blood vessels, and the approximately 5 liters of blood that the blood vessels transport. Responsible for transporting oxygennutrients, hormones, and cellular waste products throughout the body, the cardiovascular system is powered by the heartThere are two primary circulatory loops in the human bodythe pulmonary circulation loop and the systemic circulation loop Pulmonary circulation transports deoxygenated blood from the heart to the lungs, where the blood picks up oxygen and returns to the the heart. What chamber(s) of the heart support the pulmonary circulation loop?
Answers
Answer:
The Right ventricle and the Left atrium.
Explanation:
The pulmonary circulation loop starts in the right ventricle, where the
deoxygenated blood is. From there, the blood goes through the pulmonary semilunar valves and into the pulmonary trunk. The pulmonary trunk divides into two arteries, the left, and right pulmonary arteries. These arteries conduct the deoxygenated blood to the capillaries in the lungs where we exchange the CO₂ for O₂. Then, the oxygenated blood goes to the pulmonary venules and the pulmonary vein. The pulmonary vein conducts the oxygenated blood from the lungs to the left atrium of the heart. Lastly, the blood goes to the left ventricle, where the systemic circulation starts.
True/false: the zona pellucida is formed as the follicle becomes a secondary follicle.
Answers
It is true that the zona pellucida is an extracellular matrix that surrounds the oocyte (immature egg) and is formed as the follicle develops from a primary follicle to a secondary follicle.
What is follicle?In biology, a follicle is a small, spherical structure that contains an egg (or oocyte) and is found in the ovaries of female animals, including humans. Follicles develop in the ovary in response to hormonal signals, and each follicle contains a single immature egg that has the potential to develop into a mature egg that can be fertilized by a sperm. During the menstrual cycle, follicles grow and mature in response to the hormones estrogen and luteinizing hormone (LH) until one dominant follicle is selected to release a mature egg during ovulation. The remaining follicles will typically degenerate. In assisted reproductive technology (ART), multiple follicles can be stimulated to grow and develop using hormonal medications, in order to increase the chances of obtaining multiple eggs for fertilization.
Here,
The zona pellucida is initially formed by the oocyte itself, but as the follicle grows, the granulosa cells surrounding the oocyte also contribute to its formation.
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Use the information from pages 3 and 4 of the Genetics: the cell lecture complete questions 14, 15, and 16AGGTACGTACTCATG DNA StrandWhich is the correct mRNA strand?AGGTACGTACTCATGUCCAUGCAUGAGUACGTACTCATGCATAGGAGATCACTACGCGTC
Answers
The sequence of the provided strand is UCCAUGCAUGAGUAC . The sequence 5'-CAATTC-3' will therefore be present on the complementary strand. Option A is the appropriate response, so.
The sequence of the provided strand is 5'-GAATTG-3'. The sequence 5'-CAATTC-3' will therefore be present on the complementary strand. Option A is the appropriate response, so. Adenine and thymine form a double bond, while guanine and cytosine form a triple bond. As a result, adenine and thymine and cytosine and guanine are complimentary base pairs. The DNA strand 5' ATCGAACGT 3' has a complimentary sequence of 3' TAGCTTGCA 5'. Due to DNA polymerase's antiparallel construction in the 5' to 3' direction, one of these is known as the leading strand and runs in the 3' to 5' direction.
The complete question is- Use the information from pages 3 and 4 of the Genetics: the cell lecture complete questions 14, 15, and 16 AGGTACGTACTCATG DNA Strand
Which is the correct mRNA strand?
AGGTACGTACTCATG
UCCAUGCAUGAGUAC
GTACTCATGCATAGG
AGATCACTACGCGTC
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Activation of Ras requires all of the following except: Phosphorylated MAP kinase kinase kinase (Raf) Ras GEF Signaling molecule Adapter Grb-2 Phosphorylated receptor tyrosine kinase
Answers
The activation of Ras requires all of the following except a phosphorylated receptor tyrosine kinase.Phosphorylated MAP kinase kinase kinase (Raf), Ras GEF, signaling molecule adapter Grb-2 are all necessary for the activation of Ras. Raf phosphorylates and activates MEK, which in turn phosphorylates and activates ERK, leading to the activation of Ras.
A phosphorylated receptor tyrosine kinase is not required for the activation of Ras. While receptor tyrosine kinases can activate Ras through the recruitment of Grb-2, there are other pathways that can activate Ras independently of receptor tyrosine kinase activity. For example, Ras can be activated by G protein-coupled receptors, cytokine receptors, and integrins, among others.
Ras activation involves a series of protein interactions, including Ras GEF, signaling molecule, adapter Grb-2, and phosphorylated receptor tyrosine kinase. Ras GEF (guanine nucleotide exchange factor) promotes the exchange of GDP for GTP on Ras, activating it. Phosphorylated MAP kinase kinase kinase (Raf) is not required for Ras activation, but rather is a downstream effector of activated Ras.
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The_____stage occurs before mitosis. In this stage extra sub-____cellular structures are produced
Answers
help help help help help help
Answers
Answer:
Explanation: positive feedback response
What natural phenomenon is enhanced by the surplus carbon in the atmosphere?
Answers
Explanation:
surplus carbon in atmosphere...phenomenon, . makes the Earth very warm. helps plants on land...
By the addition of more surplus carbon to the atmosphere, the natural greenhouse effect gets changed which causes global temperature to rise and hence global warming.
What is Greenhouse effect?The greenhouse effect is heat which is trapped close to Earth's surface by the presence of greenhouse gases. These heat-trapping gases can be considered as a blanket wrapped around the Earth that keeps the planet warmer than it would be without them.
The increases in carbon dioxide are caused primarily by the human activities as carbon is produced by burning fossil fuels, pollution, etc. The disruption to Earth's climate equilibrium is caused by the increased concentrations of greenhouse gases which lead to an increase in the global surface temperature of the planet.
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Why do the planets move in a fixed orbit?
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A student describes a substance as lacking a definite shape. The description also states that the particles of matter are close to each other but still able to flow past each other. Which type of substanceis the student MOST likely describing?AsolidBliquidocmixtureD compound
Answers
The student is most likely describing a B. liquid.
Liquids lack a definite shape and can take on the shape of their container. The particles of matter in a liquid are close to each other, but still able to flow past each other, allowing liquids to flow and take on the shape of their container.
Solids have a definite shape and the particles are tightly packed together, while mixtures and compounds refer to combinations of different substances and do not have specific characteristics related to shape or particle behavior.
Therefore, The correct option is B liquid.
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