Answer:
d
Explanation:
d.gravitropism as it's both going downwards
The average molecular weight of proteins encoded in the human genome is about 50,000. A few proteins are very much larger than this average. For example, the protein called titin, which is made by muscle cells, has a molecular weight of 3,000,000. Estimate how long it will take a muscle cell to translate an mRNA coding for an average protein and one coding for titin. The average molecular mass of amino acids is about 110 daltons. Assume that the translation rate is two amino acids per second.
Answer:
13,636 seconds = 227.3 minutes = 3.79 hours
Explanation:
The titin protein has a molecular weight of 3,000,000 daltons, while the average molecular mass of one amino acid is 110 daltons, so it is expected that this protein is composed of 27,273 amino acids (3,000,000 daltons/110 daltons = 27,272.72). Moreover, and since the translation rate is two amino acids per sec, it is expected that the protein will be synthesized in approximately 3.79 hours (27,272.72/2 = 13,636 seconds = 227.3 minutes = 3.79 hours).
HELPPPP!!!
this is science!
The structure of the plasma membrane is often explained using the "Fluid Mosaic Model". In this model, the term "fluid" best refers to which of the following?
Group of answer choices
all choices are correct
water can move through the plasma membrane
the plasma membrane is made of a liquid
the fact that the phospholipids and embedded structures are free to move
Answer:
ALL OF THE ABOVE
Explanation:
Cystic fibrosis is a recessive genetic disease caused by a mutation in the gene that encodes the CFTR protein, which transports chloride ions in and out of cells. Some populations have a relatively high rate of cystic fibrosis carriers, possibly because the mutation protects against severe dehydration in diseases like cholera or typhoid. What concept does this best illustrate?
A: Polygenic traits
B: Genetic drift
C: Pleiotrophy
D: Heterozygote advantage
its letter b the genetic drift because it is mechanism of evolution in which allele frequencies of a population change over generation due to chance.
Cystic fibrosis is a recessive genetic disease that encodes the CFTR protein, but some populations have a relatively high rate of cystic fibrosis carriers, which protects against severe dehydration and is an example of the heterozygote advantage that is present in Option D.
What is the heterozygote advantage?When the gene is present in a heterozygote state, the gene product benefits the individual rather than harming him or her, as in sickle cell anemia and cystic fibrosis. In sickle cell anemia, the heterozygote state protects the person from malaria, and in cystic fibrosis, it protects the person from dehydration.
Hence, Cystic fibrosis is a recessive genetic disease that encodes the CFTR protein, but some populations have a relatively high rate of cystic fibrosis carriers, which protects against severe dehydration and is an example of the heterozygote advantage that is present in Option D..
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PLSSS HELPPPPPP
5. How does low biodiversity impact the stability of a tundra ecosystem?
4. Who else benefits from polar bear hunting?
3. Describe a polar bears niche.
1. How do tundra ecosystems in biodiversity compare in biodiversity to other types of ecosystems?
Answer: 5. Biologically numerous groups also are much more likely to include species that confer resilience to that ecosystem due to the fact as a network accumulates species, there may be a better risk of anybody of them having developments that permit them to conform to a converting environment.
3. The polar bear's ecological niche is that of a specialized predator of seals. When there are numerous seals around, adult polar bears will usually devour the blubber (fat) and pores and skin of the seals, which gives an awesome supply of energy. Younger bears will devour beef because the protein allows them to grow.
Explanatation:
Got them from g o o g l e but kind of change it up a bit
1. How do tundra ecosystems in biodiversity compare in biodiversity to other types of ecosystems?
Answer: Ecosystems in the arctic tundra are an example of those where there are fewer species overall than in other kinds of ecosystems.
2. What is a niche?
Answer: a role that a species plays in the ecosystem
3. Describe a polar bear's niche.
Answer: Some animals gain from polar bears' hunting of seals. A polar bear will leave behind significant portions of a seal after eating all of it. In tundra environments, these leftovers are a source of food for Arctic foxes, gulls, and other birds, particularly during the chilly winter months when there is nothing to eat. Healthy polar bear populations can have a good effect on other species' numbers, such as those of birds or Arctic foxes. Numerous other species are harmed when polar bear populations drop.
4. Who else benefits from polar bear hunting?
Answer: Arctic foxes, gulls, and other birds
5. How does low biodiversity impact the stability of a tundra ecosystem?
Answer: The species that provide resilience to an ecosystem are therefore far more likely to be found in biologically diverse groups because as a network accumulates species, there may be a greater chance that any one of them will have evolved to adapt to a changing environment.
What regulates breathing rate and how does the body sense when to breath?
Answer:
Involuntary respiration is controlled by the respiratory centers of the upper brainstem (sometimes termed the lower brain, along with the cerebellum). This region of the brain controls many involuntary and metabolic functions besides the respiratory system, including certain aspects of cardiovascular function and involuntary muscle movements (in the cerebellum).
Explanation:
The respiratory centers contain chemoreceptors that detect pH levels in the blood and send signals to the respiratory centers of the brain to adjust the ventilation rate to change acidity by increasing or decreasing the removal of carbon dioxide (since carbon dioxide is linked to higher levels of hydrogen ions in blood).
What structures have parasite worms lost? What structures/organs are expanded?
Explanation:
Something that is lacking, is a circulatory system. Instead of a typical circulatory system flatworms exchange oxygen with the air outside through diffusion. This is the process by which gases will pass through a membrane from an area of high concentration to an area of low concentration.
QUICK HELP! A team of scientists found an organism in the tropical rainforest hidden in a cave. They have learned that this organism is multicellular, appears to reproduce both asexually and sexually, is eukaryotic, and is a decomposer. What kingdom(s) could this organism belong to? Choose all that apply.
Answer:
I think kingdom protista, plantae, or animalia
Answer: Plantae, animalia, protista
Explanation: I got right on test.
1) All of the following are examples of an asexual reproduction except
a) Cloning technique b) Forming zygots
c) Runners technique I
d) Tuber technique in the potato
Answer:
b) Forming zygots
Explanation:
A zygote can be defined as a eukaryotic cell formed by the fusion of gametes during sexual reproduction. In general, a zygote is a diploid (2n) cell produced by the fusion of two haploid (n) gametic cells (eg., in mammals, sperm and egg cells). In multicellular organisms, the zygote is the first stage of development, which will give rise to an adult organism as it divides and grows. A zygote cell can be considered as a pluripotent stem cell because it differentiates into all cell types.
Wrong answers only!!! What is the main source of surface water turning into underground water?
Answer:
Birds + planes = chicken
Explanation:
If you divide the air density by the amount of dirt on the sun, you get three roasted turkeys and a new haircut.
Answer:
Hey you forgot the part were you stuff the candle with cotton and then square the amount of laptops you have then divide by the amount of iphones produced by the worms that eat batteries to get the answer chicken AND 3 marked white vans but the catch is there are not white they are actually red
Explanation:
PLEASE HELPPPP
What is the relationship between mutation, the cell cycle, and cancer? Select all statements that apply.
A Mutated genes typically allow cells to respond to checkpoint proteins that halt the cell cycle, thus avoiding formation of tumors.
B. As a result of unregulated cell cycles, cells may become cancerous, meaning that the cells grow and divide uncontrollably.
С
Cancerous cells may form malignant tumors that invade and destroy surrounding healthy tissue.
D. Mutated, defective genes may cause cells to become unable to respond to signals that regulate the cell cycle.
Which of the following does NOT provide biological evidence for the age of the earth?
Fossil Evidence
Molecular Clocks
Radioactive Dating
Comparative Anatomy
Answer:
Explanation:
Anatomía comparada
HELP!!!!!!!!!
Which kind of molecule provides building blocks for tissues, transports
other molecules, and helps regulate certain reactions in the human body?
A. carbohydrates
B.lipids
C. proteins
D. nucleic acids
Answer:
C : Proteins
Explanation:
(Can I get brainlest?)
Proteins are the molecules that provide building blocks for tissues, transports other molecules, and helps regulate certain reactions in the human body. The correct option is C.
What are proteins?A protein is a found naturally, extremely complex substance composed of amino acid residues linked together by peptide bonds.
Proteins are found in all living life forms and contain a variety of important biological compounds such as enzymes, hormones, and antibodies.
Proteins are massive complex molecules that perform numerous important functions in the body.
They are essential for the structure, function, and regulation of the body's tissues and organs and do the majority of the work in cells.
Proteins are molecules that serve as foundation for tissues, transport other molecules, and aid in the regulation of certain bodily reactions.
Thus, the correct option is C.
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What would happen to Earth's climate if we had no moon, and why?
Answer:
The tilt creates what we know as seasons and changing weather. Without the pull of the moon, this tilt would change.
Explanation:
Either the tilt would become extreme, leading to extreme and severe seasons, or the tilt would decrease, and we would see almost no seasons at all. The moon influences life as we know it on Earth.
Answer: Because It is the pull of the Moon's gravity on the Earth that holds our planet in place. Without the Moon stabilising our tilt, it is possible that the Earth's tilt could vary wildly. It would move from no tilt (which means no seasons) to a large tilt (which means extreme weather and even ice ages).
The tilt creates what we know as seasons and changing weather. Without the pull of the moon, this tilt would change. Either the tilt would become extreme, leading to extreme and severe seasons, or the tilt would decrease, and we would see almost no seasons at all. The moon influences life as we know it on Earth. Hope this helps have a awesome day/night❤️✨Explanation:
When the mutated DNA sequence is transcripted/translated, what was the outcome?
ig _ander80239 in need of bio honors test help
PLS HELP
Answer:
Explanation:
Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). ... The newly formed mRNA copies of the gene then serve as blueprints for protein synthesis during the process of translation.
What is random fertilization?
Answer:
Two individuals mate, and each is capable of producing over 8 million potential gametes. The random chance of any sperm and egg coming together is a product of these two probabilities.
Define bisexual flower
Answer:
The flowers which contain both male and female reproductive organs are known as full or bi flowers. They will self-pollinate themselves. Examples: Tulip, Sunflowers and Lily
Explanation: did it awhile ago hope this helps you pass!
Answer:
Like they said, bisexual flowers hold both female and male reproductive parts of a flower meaning they can pollinate other flowers and themselves.
Explanation:
The interphase consists of the _____, _____, and _____ phases.
Answer:
The interphase consists of the G1 phase, S phase, and G2 phases. :3
Explanation:
:3
What conclusion can you draw from the results shown?
A)The amount of the drug was decreased to achieve the same effect.
B) The mouse is in a state of tolerance.
C) The mouse is suffering from withdrawal symptoms.
D) The amount of drug injected was the same throughout the 7 weeks.
Answer and I will give you brainiliest
Answer:
B) The mouse is in a state of tolerance.
Should people try to save wild populations of the Asian elephant? (Complete sentences says my teacher :/ )
what does transportation help in ascent of sap?
Evaporation of water molecules from the cells of a leaf creates a suction which pulls from the xylem cells of the roots.Thus,the transpiration helps in the absorption and upward movement of water and minerals dissolved in it from roots to leaves in the help of ascent of sap .
may this was ur answer
An earthquake with a Richter magnitude of 5 releases ______ more energy than an earthquake with a Richter magnitude of 3.
a. 900
b. 27000
c. 30
d. 2
Answer:
b
Explanation:
Which one 1,2,3,4…………………
Answer:
3
Explanation:
brain
hope this helps!!!
Answer:
3
Explanation:
In one of these systems, the prey are very large animals and the predators are verysmall animals, such as elephants and mosquitoes. Thus it takes many predators toeat one prey, but each prey eaten is a tremendous benefit for the predator population.The other system has very large predators and very small prey. Determine whichsystem is which and provide a justification for your answer.
Answer:
Due to its size and feeding requirement.
Explanation:
In the forest ecosystem, many lions feeds on one deer or buffalo because the food is in large amount and this food is enough to fulfill the requirements of that lions so we can say that many predators eats one prey while on the other hand, there are some predators that feeds on many prey at one because they are small in size and one prey did not fulfill their requirement so that's why the predator feeds on many preys. Fox feeds on many mice is the example of one predators feed on many prey.
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Earth has gone through many cycles of ice ages followed by periods of warmer climate. How might these cycles be related to patterns of solar output and patterns of change in Earth’s motion in space?
Answer:
They both go back and forth, such as the climate going from hot to warm, and the tectonic plates of the earth going from closed 300 million years ago to spreading far apart now.
Both of them oscillate, as seen by the earth's tectonic plates, which went from being tightly packed 300 million years ago to spreading widely at the moment.
What is tectonic plate?Tectonic plate is defined as the lithosphere is made up of sections or parts of the upper mantle and crust of the earth. Starting around 4 billion years ago, cooler parts of the Earth's crust were forced downward into the warmer upper mantle, damaging and weakening the surrounding crust. According to the authors, this cycle repeated itself until the weak spots established plate borders.
Slow variations in the Earth's orbit start and conclude these ice eras. However, variations in CO2 concentrations in the atmosphere also play a significant role in driving both cooling at the start of ice ages and warming at their end. During the last ice age, the average global temperature was around 4C lower than it is now.
Thus, both of them oscillate, as seen by the earth's tectonic plates, which went from being tightly packed 300 million years ago to spreading widely at the moment.
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how many chromosomes are there in human ovum
Answer:
23 chromosomes
Unlike all the other cells in a human body which are diploid, human sex cells are haploid. That means that both sperm cells and ova are haploid; containing only 23 chromosomes.
Explanation:
have a good day!
(─‿─)
The chromosomes in egg and sperm cells have just 23 chromosomes each.
What is gamete?Male gametes are termed sperm, while female gametes are called "ova." Gametes are an organism's reproductive cells, also referred to as "gender cells." Since gametes are haploid cells, each chromosome is present in one copy per cell.
Unfertilized reproductive cells are called gametes. A zygote is an egg that has been fertilized. Gametes are always haploid cells since they are a byproduct of meiosis.
Zygote is a diploid structure because it results from the fusing of a male and female haploid gamete.
Similar to a sperm, an egg has 23 chromosomes total, which is half the number found in a normal cell.
The resultant embryo will therefore have the typical 46 chromosomes in total after an egg and sperm join during fertilization.
Thus, there are 23 chromosomes in human ovum.
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Select the term that best fits the following definition: Tells what elements
a compound contains and the number of those atoms *
O Covalent Bond
O lonic Bond
O Compound
O Chemical Formula
which of the following is an example of the current impact DNA technology has on human health?
Answer:plants grow
Explanation:te she said so
Two ways that hostility can affect the body are through stress on the heart and Select one: a. increased pulmonary function. b. reduced pulmonary function. c. decreased inflammation. d. increased lymphocyte activity.
Answer:
sorry hindi ko po alam nyan pag alam ko sasabihin ko po sa inyo promise po nyan
which of the following does not affect the rate of photosynthesis a) temperature b) light intensity c) soil d ) water intake
Answer:
a) temperature
Explanation:
took test and got right
light intensity does not affect the rate of photosynthesis .
what is photosynthesis ?The process in which plants, algae and certain bacteria use light energy of sunlight, water, carbon dioxide and convert light them into chemical energy and starch. called as photosynthesis.
Photosynthesis occur in special organelles named chloroplast which has its own DNA, genes and hence can synthesize their own proteins.
Chloroplasts have stroma, fluid, and stack of thylakoids known as grana, three types of chlorophyll such as chlorophyll a, chlorophyll b, and carotenoids.
Oxygenic photosynthesis is commonly observed in plants, algae and cyanobacteria where electrons are transferred from water to carbon dioxide by using light energy, to produce energy, oxygen is produced along with carbohydrates.
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