the major way by which the monomeric g protein ras is activated in receptor tyrosine kinase signaling is activation of ras-gef. true false
Answers
The statement is false. The major way by which the monomeric G protein Ras is activated in receptor tyrosine kinase signaling is through the activation of Ras-GEF (Guanine nucleotide Exchange Factor).
Ras-GEF is responsible for promoting the exchange of GDP (guanosine diphosphate) bound to Ras with GTP (guanosine triphosphate), leading to the activation of Ras. When a ligand binds to a receptor tyrosine kinase on the cell surface, it triggers a cascade of events, including the activation of Ras. This activation is mediated by the recruitment and activation of Ras-GEF. Ras-GEF facilitates the exchange of GDP for GTP on Ras, resulting in a conformational change that activates Ras. Once activated, Ras can then interact with downstream effector proteins and initiate signaling pathways involved in various cellular processes, such as cell growth, differentiation, and survival.
In summary, the activation of Ras in receptor tyrosine kinase signaling is primarily achieved through the activation of Ras-GEF, which promotes the exchange of GDP for GTP on Ras, leading to its activation and subsequent signaling cascade.
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Related Questions
Most of Earth’s oxygen comes from the rain forest?
Answers
Answer:
Of the many important reasons to worry about the thousands of fires raging in the world’s largest rainforest, oxygen supply is not one of them.
Explanation:
l think this the answer
Answer:
hope this helps u pls mark me brainlist
Explanation:
s well as the vivid beauty that comes with great diversity in plants and animals, rainforests AAalso play a practical role in keeping our planet healthy.
By absorbing carbon dioxide and releasing the oxygen that we depend on for our survival. The absorption of this CO2 also helps to stabilize the Earth's climate.
Rainforests also help to maintain the world's water cycle by adding water to the atmosphere through the process of transpiration which creates clouds. Water generated in rainforests travel around the world; scientists think that moisture generated in the forests of Africa ends up falling as rain in the Americas!
Please I need help with this
Answers
If a population experiences no migration, is very large, has no mutations, has random mating, and there is no selection, which of the following would you predict?
A .The makeup of the population’s gene pool will remain virtually the same as long as these conditions hold
b. The population will evolve, but much more slowly than normal
c. Dominant alleles in the population’s gene pool will slowly increase in frequency while recessive alleles will decrease
d. The composition of the population’s gene pool will change slowly in a predictable manner
e. The population probably has an equal frequency of A and a alleles
Answers
Answer: The makeup of the population’s gene pool will remain virtually the same as long as these conditions hold
Which phrase best describes what the graph for average low temperatures would look like?
It would run parallel to and below the high temperature graph.
It would be a flat line that crosses the high temperature graph.
It would be the opposite of the high temperature graph.
It would be a flat line below the high temperature graph.
Answers
Answer:
It would be the opposite of the high temperature graph.
Explanation:
i got it right and thats all that matters
The graph for average low temperatures would look like the opposite of the high-temperature graph.
What is a temperature graph?A climate graph displays yearly temperature and precipitation statistics for a particular location. Temperature is measured using the numbers on the left-hand side of the chart. The average temperature for each month is plotted on the graph with a red dot and the dots are then connected in a smooth, red line.
What graphs are used in weather?Two common types of graphs are bar graphs and line graphs. Bar graphs use vertical or horizontal rectangles (bars) to represent a specified quantity. Line graphs use points to identify values, and then connect each point with a line that shows the fluctuations in the data.
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in a cytosolic folded protein, what orientation and/or interaction do the hydrophobic amino acids tend to have? choose one or more: a. they are tucked away inside the protein. b. they are exposed on the outside of the protein. c. they are clustered near the n-terminus of the protein. d. they are interacting with other nonpolar amino acids.
Answers
In a cytosolic folded protein, hydrophobic amino acids tend to be tucked away inside the protein, option (a) is correct.
This is because hydrophobic amino acids are repelled by water due to their nonpolar nature, making them energetically unfavorable to be exposed to the aqueous environment. To minimize contact with water, these hydrophobic residues cluster together in the protein's interior, shielded from the surrounding solvent.
This arrangement is facilitated by hydrophobic interactions, where the nonpolar side chains of the hydrophobic amino acids associate with each other. By clustering together, these hydrophobic residues contribute to the stability and proper folding of the protein. The hydrophilic amino acids, on the other hand, tend to be positioned on the protein's surface, interacting with the aqueous environment and other polar molecules. Therefore, option (a) is the correct answer.
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The complete question is:
In a cytosolic folded protein, what orientation and/or interaction do the hydrophobic amino acids tend to have? choose one or more:
a. they are tucked away inside the protein
b. they are exposed on the outside of the protein
c. they are clustered near the n-terminus of the protein
d. they are interacting with other nonpolar amino acids.
_____ thought capitalism would inevitably lead to revolution
because there is contradiction between the wealth created for some
and the immiseration and poverty created for others .
Answers
The person who thought capitalism would inevitably lead to revolution because there is a contradiction between the wealth created for some and the immiseration and poverty created for others was Karl Marx. Marx's idea of capitalist exploitation is that it is a mechanism by which the bourgeoisie
(owners of the means of production) would accumulate more than 100% of the value of a worker's work since the laborer receives only a tiny portion of the value of their work while the rest goes to the capitalist who owns the means of production. Marx argued that capitalism is inherently exploitative and that workers would eventually become aware of this and rise up in a revolution to overthrow the capitalist system. He predicted that this would happen because capitalism creates an inherent conflict between the working class, who are exploited, and the capitalist class, who own the means of production and control the wealth of society.
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Human gene 1 is known to have 12 different alleles (labeled a through 1). Gene 2 is known to have 8 alleles (labeled 1 through 8). Assuming the alleles are distributed randomly among humans, what is the likelihood that a random human will possess the genotype c/j3/7 ?
Answers
The likelihood of a random human possessing the genotype c/j3/7 is 1/768.
To calculate the likelihood of a random human possessing the genotype c/j3/7, we need to multiply the probabilities of each individual allele occurring together.
Assuming the alleles are distributed randomly among humans, the probability of a person having allele c for gene 1 is 1/12, the probability of having allele j3 for gene 2 is 1/8, and the probability of having allele 7 for gene 3 is 1/8.
Therefore, the probability of a random human possessing the genotype c/j3/7 is:
P(c/j3/7) = P(c) x P(j3) x P(7)
= (1/12) x (1/8) x (1/8)
= 1/768
So the likelihood of a random human possessing the genotype c/j3/7 is 1/768.
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Cellular ______ is the process of converting food into energy, while _________ is the process used by plants to capture and store the Sun's energy.
(_____ = blank)
plz answer this ^w^
Answers
Answer:
respiration,photosynthesis
Explanation:
I'm not so sure the first blank is cellular respiration but I'm posive the second blank is photosynthesis:)
organelle in every cell which contains the genetic information
a. true
b. false
Answers
It is true that organelle in every cell contains the genetic information and the organelle is the nucleus.
Nucleus is the largest organelle in eukaryotic cell and it is considered to be the cell's control center. Cell organelles are the nuclei, which stores the genetic information; mitochondria, which produce ribosomes and chemical energy, which assembled the proteins. Ever cell in person's body having a same deoxyribonucleic acid. It is a hereditary material almost all the organisms and in humans. In addition to DNA, the nucleus contains a very thick liquid called as nucleoplasm which is similar in composition to the cytosol found in the cytoplasm outside the nucleus.
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What process primes a molecule to change in a way that increases its activity, produces motion, or does work? glycolysis beta oxidation phosphorylation cellular respiration
Answers
Cellular respiration is the process which primes a molecule to change in a
way that increases its activity.
What is Cellular respiration?This is the process in which organisms combine oxygen with food
substances thereby resulting in the conversion of chemical energy to other
forms.
The other forms are involved in the daily activities which are carried out by
organisms present in the ecosystem.
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Which is most correct when testing a hypothesis?
A. If the hypothesis is rejected, the experiment was a failure
B. The hypothesis can be proven true
C. The hypothesis can be rejected or accepted
D. All of the above
What happens when there is a bias in an experiment?
A. The result are more accurate
B, personal opinions gets in the way
C. The hypothesis is proved wrong
D. The experiment is not repeatable
Answers
Answer:
q1 b
q2 a
Explanation:
What is similar about the ecosystems that make up a biome?
Answers
Answer:
they share similar biotic and abiotic factors
Explanation:
Ecosystems that make up a biome have similar : Biotic and Abiotic factors
Biotic factors are factors that have life in them and also have a significant effect on an ecosystem, some examples of Biotic factors are; animals , plants and microorganisms. while Abiotic factors are are non-living factors which also have a significant effect on the composition of an ecosystem like , Rivers, rocks and temperature.
Biomes are a group of ecosystems sharing similar Abiotic and Biotic factors. An example of a Biome is a Terrestrial Biome which includes Tropical Forest and deserts ecosystems.
Hence we can conclude that Ecosystems that make up a biome have similar : Biotic and Abiotic factors
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PLEASE HELP!! give legit answer plssss
Key Questions and Terms Notes
What types of muscles are in the body?
What are muscles?
What's the difference between voluntary muscles and involuntary muscles?
What are the different types of muscle tissue?
How do skeletal muscles work?
What five functions does the skeleton perform?
The backbone is made up of 26 small bones called ___________.
What are the characteristics of bones?
What role do joints play?
What are the two types of joints?
What are ligaments?
What is the role of the nervous system?
Which parts of the body make up the central nervous system?
Name the two main categories of the nervous system.
How do the muscular, skeletal, and nervous systems work together to maintain homeostasis?
What do sensory neurons do?
What do motor neurons do?
Nervous System Video:
Word Bank: brain, instincts, interpreted, organs, reflexes, spinal cord, senses Notes
The central nervous system includes the _______ and _______.
Signals from _______ and the body's _______ are received by the brain and the spinal cord.
Once signals are processed and _______ by the central nervous system, a response is sent back to the body.
A central nervous system is also responsible for programming _______ and _______.
Paraplegic Will Walk Again with Exoskeleton at the World Cup Video:
Key Questions and Terms Notes
What animal did scientists study to create the brain–machine interface?
What does the exoskeleton use to power its movements?
What is the importance of this research?
Answers
Answer:
Answer B
Explanation:
Plato
4. name the three different distinct bands found in a skeletal myofibril and describe their functions
Answers
The three distinct bands found in a skeletal myofibril are the A-band, I-band, and H-zone.
The A-band is the darkest and widest band and is formed by the overlapping of myosin and actin filaments. It contains both thick and thin filaments. The I-band is the lightest band and is composed of thin actin filaments only.
The H-zone is the central part of the A-band where there is no overlap between thick and thin filaments.
The A-band plays a major role in muscle contraction as it contains both the actin and myosin filaments which interact with each other during the process. The I-band shortens during muscle contraction as the actin filaments slide over the myosin filaments.
The H-zone narrows as the actin filaments move towards the center of the sarcomere, thereby shortening the myofibril. Understanding the function of each band is important in diagnosing and treating muscle disorders such as muscular dystrophy and myositis.
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which of the following components form part of a company's macro-environment?
Answers
The components that form part of a company's macro-environment are; Legal/regulatory conditions, Political factors, and Sociocultural forces. Option A, B, and E is correct.
Legal/regulatory conditions; These encompass the laws, regulations, and policies established by the government or regulatory bodies that affect the operations and activities of a company. They include areas such as labor laws, environmental regulations, consumer protection laws, and industry-specific regulations.
Political factors; These refer to the political environment in which a company operates, including government stability, political ideology, trade policies, taxation policies, and political influence on business operations.
Sociocultural forces; These represent the social and cultural aspects that influence a company's operations, such as demographics, social values, consumer attitudes, lifestyle trends, cultural norms, and societal expectations.
Hence, A. B. E. is the correct option.
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--The given question is incomplete, the complete question is
"Which of the following components form part of a company's macro-environment? A. legal/regulatory conditions B. political factors C. ancillary communications D. historical incentives E. sociocultural forces."--
Can someone help me with the word bank?
Answers
My dog sandy measured the width of a machine part he made in his lab and told caryl the width was 16.25mm. caryl knew sandy had learned to properly report the correct significant digits. She asked sandy what the uncertainty of his measurements was and sandy correctly said
a). ±0.01mm b). 1.5% c). 4% d) cant tell e). ±0.25mm
Answers
The information which is provided is insufficient to determine the uncertainty in the measurements done by Sandy.
The correct option is option d.
Based on the information which is provided, it is not possible to accurately determine the uncertainty of Sandy's measurement without additional context or knowledge about the measuring instrument's precision or the method used.
Uncertainty in measurements basically depends on factors such as instrument precision, measurement technique, and environmental conditions. To determine the uncertainty, one needs to consider factors beyond the reported value itself. Without specific information about these factors, it is not feasible to determine the uncertainty with certainty.
Hence, the correct option is option d.
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Turners syndrome is found in girls only not in boys
Answers
Answer:
hey bro
what is turners syndrome
What happens to individuals with traits that are better adapted to the environment?
Answers
Do any cells have natural color?
Answers
Answer:
Here is
Explanation:
I don't think so, but I owe some, because most of them are painted.
Answer:
most cells are transparent and without color however some have color.
Animal cells for example that have a lot of iron, like red blood cells, are deep red.
In β–oxidation the sequence of intermediate are: alkane, alkene, alcohol, ketone. Where have we seen this sequence before? О А. In gluconeogenesis О В, In electron transport O C in the Kreb's cycle O D. in glycolysis O E in the urea cycle
Answers
The sequence of intermediates in β-oxidation (alkane, alkene, alcohol, ketone) is seen in the metabolism of fatty acids, which undergo β-oxidation to produce acetyl-CoA, the precursor for the Krebs cycle. The correct option is (B).
The Krebs cycle, also known as the citric acid cycle, is a series of chemical reactions that occur in the mitochondria of eukaryotic cells and is responsible for the generation of energy through the oxidation of acetyl-CoA.
In β-oxidation, the fatty acid is broken down into two-carbon units in the form of acetyl-CoA, which then enters the Krebs cycle. The initial step of β-oxidation involves the conversion of the fatty acid to an alkane, which is then converted to an alkene through the removal of two hydrogen atoms.
The alkene is then converted to an alcohol by the addition of a water molecule, followed by oxidation to form a ketone. The ketone is then cleaved to produce acetyl-CoA, which is utilized in the Krebs cycle.
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Write a testable question that could be used to further investigate the topic of using the fossil record to identify changes in life on earth.
Answers
What kind of organisms existed in the past?
How did organisms move about? are some testable questions hat could be used to further investigate the topic of using the fossil record to identify changes in life on earth.
Fossils are the remains of extinct plants and animals that have been encased in layers of rock.The existence of fossil records demonstrates how living things have altered or evolved over time. The specific order in which these species have lived has been identified by paleontologists. For instance, older rocks contained simpler species, while younger rocks contained complex life.Existence of species with transitional traits that are placed in sequential stratigraphic order is one pattern in the fossil record. This indicates that the fossil record demonstrates minute changes in the structures of creatures across time, supporting evolution.learn more about fossil here: https://brainly.com/question/11224681
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Deep ocean food chains begin
with...
A. omnivores.
B. fungus.
C. chemosynthesis.
Answers
Answer:
B fungus
Explanation:
B fungus
Answer:
B: Fungus
Explanation:
I had a test today w/ that question
What does mitochondria do
Answers
Answer:
Mitochondria are small structures that make energy in almost all of your cells. They do it by combining oxygen with fuel molecules (sugars and fats) that come from food. When mitochondria are faulty, cells don't have enough energy.Explanation:
I'm mexican
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
Explanation:
Then, at the bottom write how each animal uses its pattern to camouflage itself?
Answers
Leopards and tigers both have striped bodies. They are better able to blend in thanks to the modification. The primary function of those creatures' body patterns is to aid in camouflage.
Bobcats conceal themselves in what way?The bobcat can conceal itself from its victim until it is ready to pounce because to its well-camouflaged patterned coat. In order to prevent their razor-sharp claws from dulling when not being utilized for pouncing, climbing, or self-defense, bobcats may retract them into their paw pads.
How do cheetahs blend into their surroundings?About all of a cheetah's body is covered in spots, which can act as camouflage by contrasting shadows in the gray-hued grasses they live in. Both pursuing prey and defending oneself need the use of camouflage.
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La répartition verticale des plantes
Answers
Answer:
Vertical distribution of plants
A red flower and a flower with red and white spots are crossed. What is the percentage of them having an all red flower
Answers
Answer:
the answer is 2 percent
Which of these statements best describes how scientific ideas change (multiple choice)
A. Scientific ideas rarely change because they are based on extensive Evidence
B. New evidence leads to modification of ideas.
C. Scientists form opinions based on evidence and decide how the idea should change.
D. As a scientific idea changes, it eventually becomes a scientific theory and then a law
Answers
A is not correct bc ideas can change
C is not correct bc opinion is not the right word
D is not correct because theories can not become laws.
explain why there is such a great drop in biomass as you work your way up
Answers
As you work your way up the trophic levels of an ecosystem, there is a significant drop in biomass, which is the total mass of living organisms present. This phenomenon is known as the ecological pyramid or the pyramid of biomass.
There are several factors that contribute to this pattern:
Energy transfer efficiency: As energy moves through the food chain, there is a loss of energy at each trophic level. Organisms at higher trophic levels typically obtain their energy by consuming lower trophic level organisms. However, energy is not efficiently converted from one trophic level to the next. Only a fraction of the energy consumed is converted into biomass, while the rest is lost as heat or used for metabolic processes. This inefficiency in energy transfer results in a decrease in biomass as you move up the trophic levels.
Energy requirements and metabolic losses: As organisms grow and carry out their life processes, they require energy for maintenance, growth, reproduction, and other activities. Higher trophic level organisms tend to have higher energy requirements due to larger body sizes or more complex physiological processes. A portion of the energy acquired from lower trophic levels is used for these metabolic needs rather than being converted into new biomass. This further contributes to the drop in biomass at higher trophic levels.
Trophic level efficiency and population sizes: Each trophic level has a limited carrying capacity, which determines the maximum population size it can sustain. As you move up the trophic levels, the population sizes of organisms naturally decrease due to limited resources, competition, predation, and other ecological factors. With smaller populations, there is less biomass available at higher trophic levels.
Overall, the combination of energy transfer inefficiencies, energy requirements, metabolic losses, and population dynamics leads to a substantial decrease in biomass as you progress up the trophic levels. This pattern reflects the constraints and limitations within ecosystems and highlights the importance of energy flow and ecological relationships in shaping the structure and dynamics of biological communities.
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Get It?
3. Explain how the genetic
traits carried on multiple
alleles can lead to a wide
range of characteristics in
humans.
Answers
Genetic traits carried on multiple alleles can contribute to a wide range of characteristics in humans due to the diversity of allele combinations that can occur.
Each gene can have multiple alleles, which are different versions or variants of the gene. These alleles can lead to variations in traits such as eye color, blood type, or height. The presence of multiple alleles means that individuals can inherit different combinations of alleles from their parents, resulting in a diverse array of genetic combinations.
This genetic diversity leads to the wide range of characteristics observed in human populations, contributing to phenotypic variation and individual differences among people.
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