The removal of sections of RNA, called introns, occur at which regulation step in eukaryotic cells? (1 point)
o mRNA life span
O post-translation
O RNA processing
ochromatin remodeling
Answer:
post-translation
Explanation:
When a eukaryotic gene is transcribed in the nucleus, the primary transcript (freshly made RNA molecule) isn't yet considered a messenger RNA. Instead, it's an "immature" molecule called a pre-mRNA.
The pre-mRNA has to go through some modifications to become a mature mRNA molecule that can leave the nucleus and be translated. These include splicing, capping, and addition of a poly-A tail, all of which can potentially be regulated – sped up, slowed down, or altered to result in a different product.
Most pre-mRNA molecules have sections that are removed from the molecule, called introns, and sections that are linked or together to make the final mRNA, called exons. This process is called splicing.
In the process of alternative splicing, different portions of an mRNA can be selected for use as exons. This allows either of two (or more) mRNA molecules to be made from one pre-mRNA.
Answer:
RNA processing
Explanation:
RNA processing. Splicing, capping, and addition of a poly-A tail to an RNA molecule can be regulated, and so can exit from the nucleus. Different mRNAs may be made from the same pre-mRNA by alternative splicing.
Choose only one correct option. Explanation needed.
Answer: D
only green plants
Answer:
[tex]\large \boxed{\mathrm{D. \ Photosynthesis}}[/tex]
Explanation:
Photosynthesis is a characteristic present in plants. Photosynthesis is a process where plants transform light energy into chemical energy. Reproduction, respiration, and excretion are all characteristics of living organisms.
You are studying ABO blood groups, and you know that 6.25% of the population has genotype IAIA and 42.25% of the population has Type O blood. What is the expected frequency of blood type B?
51.5- AB
Since in the ABO blood system AB is a blood type as well as B. The rest of the population will have either of these types so exclusively for B type then it will ne the remaining - AB
You put 10ul (one loopful - the loop is calibrated for this volume) of a 0.03 ug/ul pGLO solution into the DNA tube. Calculate the ug of DNA you put into the tube.
Answer:
The µg of DNA put into the tube is 0.3 µg.
Explanation:
Here in this question, we are interested in calculating the µg of DNA put into the DNA tube.
This can be calculated using a mathematical formula.
Mathematically;
Total amount of DNA in µg = concentration in µg/ µl X volume in µl
= 10 µg/µl X 0.03µl = 0.3 µg.
The process called substrate cycling is used to describe this process: Group of answer choices Freely reversible reactions Recycling of vitamins as catalysts in metabolism Situations where there are two different enzymes used to reverse a specific step in a metabolic pathway
Answer:
where there are two different enzymes used to reverse a specific step in a metabolic pathway is the correct answer.
Explanation:
where there are two different enzymes used to reverse a specific step in a metabolic pathway is a process of substrate cycling because its a process that happen between two metabolic pathways or different enzymes ,non equilibrium catalyses reactions which occurs or happen at the same time in opposite directions and having no effect but its deplete energy inform of heat.
basic question for fun . HOW TO FIGHT WITH TYPES OF VIRUS IN THE WORLD AND HOW GET RID FROM IT EXAMPLES: CORONA VIRUS, INFLUENZA, TYPHOID, HEPHATITISAND CHLOREA?
Answer:
Boost immunity power( follow these):
1. Have enougn sleep.
2. Be happy...overcome stress.
3.Do exercises frequently.
4. Have regular check ups ;these may help to diagnosis on early stage.
5. Consume the foods which boosts immunity.
6. Be mentally strong.
Explanation:
There isn't proved ideas ...however, we can fight by making our immune system strong...
HIT LIKE
Professor George Palade’s elegant experiment to follow protein synthesis and trafficking, published nearly 60 years ago, provided us with a great deal of information and has been used as a tool by several investigators. If you had access to all the reagents needed to repeat the in vitro experiment, describe what you would need to do to see the progression of newly synthesized proteins and their transport in the cell.
Answer:
The interpretation including its particular topic is demonstrated in the following portion on the interpretation.
Explanation:
After experiments with Guinea Pigs, Palade transitioned to anything in vitro research in which sections of pancreatic tissue had all been subjected to a pulsed radioactive lysine for something like a shorter amount of time. The radiation leucine pulse must have been subsequently adopted with nonradioactive leucine, as well as the pieces have been fixed but instead analyzed besides electron microscopy as well as transmission line during some different points in time.Effects from either the radioactive elements with leucine throughout the reflective coating surrounding the tissue fragments formed autoradiographic particles.Such granules eventually passed forward towards the Golgi throughout corresponding different points in time, as well as subsequently towards the cell membranes, whereby they seemed equipped for induction as established zymogen granulates.Mandy and Pat are discussing a movie that showed someone being injured by radio waves. Mandy says that's not likely because
radio waves are low frequency and low energy, and Pat says that it is likely because otherwise they would not put it in a movie.
What is the best way to help them decide if the information is true?
They can write a letter to the director.
Movies are reliable sources, so they can assume Pat is correct.
They can use reliable web sites or books to get more information.
They can watch another movie in the series to see what happens next.
Answer:
Its C, They can use reliable web sites or books.
Explanation:
Why did the leaves rise? Will the leaf discs float faster or slower if the rate of photosynthesis is decreased? (5 points)
Answer:
Leave rise and floating depends on the production of oxygen.
Explanation:
The leaves rises due to consumption of oxygen which is produced during photosynthesis. Floating of leave occurs due to production of oxygen in the process of photosynthesis. The leaf discs float faster if the rate of photosynthesis is increases because oxygen production is also increases while the leaf discs float will be slower if the rate of photosynthesis is decreased due to low production of oxygen.
Which of the following is an example of reproductive isolation?
Answer:
the example of reproductive isolation is temporal isolation, ecological isolation, behavioral isolation, mechanical isolation.
Which type of gene is only expressed if there are two genes of that type? (1 point)
O recessive gene
O Co-dominant gene
O dominant gene
O inactivated gene
When discussing magnetic fields we could say that
metals can become magnetic if they have many spinning electrons that create magnetic fields
O metals are magnets because they have more electrons than non-magnetic materials
O non-paired electrons spin in opposite directions creating a magnetic field
the spinning electrons in some atoms pair up and create a magnetic field
Answer:
Explanation:
metal can become magnetic if they have many spinning electron. When the majority of atoms spin in the same direction the strong magnetic field is produced the direction of electron spin determine the direction of magnetic field
1. A tree root breaking a rock into smaller fragments is an example of both _______ and mechanical weathering.
2. When rocks are exposed to heat, they _______, which can contribute to thermal stress.
3. When harmful gases, such as sulfur dioxide and nitrogen oxide, react with water in the atmosphere, they can produce
4. The agent of erosion involved in stream erosion is
5. When the ground is so saturated that it can't absorb rainfall or when rain falls so quickly that the ground can't absorb the water, _______ forms.
6. A/An _______ is a huge, heavy, moving body of ice that picks up rocks and sand and erodes the ground beneath it as these materials scrape across it.
7. Hot arid climates are prone to erosion by _______.
8. Rows of trees and shrubs planted to protect fields from wind erosion are known as _______.
Answer:
chemical
expand
acid rain.
rushing water.
runoff
glacier
wind.
windbreaks
Explanation:
The correct terms for the given fill in the blanks are:
1. A tree root breaking a rock into smaller fragments is an example of both chemical and mechanical weathering. Weathering is the breakdown of rock into smaller particles.
2. The rocks when are exposed to heat, expand contributing to thermal stress.
3. Sulfur dioxide and nitrogen oxide are harmful gases, which react with water in the air to form acid rain.
4. The agent of erosion involved in stream erosion is referred to as rushing water.
5. The ground is so saturated that it can't absorb rainfall or heavy and quick rainfall does not allow the ground to absorb the water forming runoffs.
6. Glacier is a huge, heavy, moving body of ice that picks up rocks and sand and erodes the ground beneath it as these materials scrape across it.
7. Hot arid climates are prone to erosion by wind.
8. Windbreaks refer to the rows of trees and shrubs planted to protect fields from wind erosion.
To know more about weathering, refer to the following link:
https://brainly.com/question/14426457
Which of the following best explains the potential health problems associated with endocrine disruptors? A) Endocrine disruptors are the only available pesticides,hence they are used widely. B) Endocrine disruptors mimic hormones that regulate critical biological processes. C) Endocrine disruptors do not biodegrade, remaining toxic years after their release. D) There are no major health problems associated with exposure to endocrine disruptors. E) Endocrine disruptors encompass a wide array of toxic pesticides.
B) Endocrine disruptors mimic hormones that regulate critical biological processes.
Endocrine disruptors, at times moreover called as hormonally unique trained professionals, endocrine disturbing engineered substances, or endocrine upsetting blends are manufactured substances that can interfere with endocrine structures. These aggravations can cause threatening developments, birth flees, and other developmental issues.
The potential health problems associated with endocrine disruptors is that Endocrine disruptors mimic hormones that regulate critical biological processes.
For more information:
https://brainly.com/question/22965068?referrer=searchResults
Answer:
It's A.) Endocrine disruptors mimic hormones that regulate critical biological processes.
Explanation:
Quizlet gave me the answer
Explain the relationship between a thriving civilization and it’s agriculture system? In a paragraph
Answer:
They use advance technologies in agriculture.
Explanation:
There is a direct relationship between thriving civilization and it’s agriculture system because they use advance methods and technologies in agriculture instead of traditional practices. They use heavy machinery for tillage in order to save the time, use high yielding varieties, use proper dose of fertilizers, use of pesticides and weedicides in order to protect the crop. They harvest the crop by using thresher in order to avoid post harvest losses. In short, they use all technologies available to make a higher yield in order to earn more profit.
Describe the process of action potential conduction and neurotransmission from one neuron to another, both electrically (including saltatory conduction) and chemically. Describe how a cell fires an action potential and be sure to address which structures are involved in neurotransmission. Discuss reuptake and enzymatic degradation (breakdown) in the context of the appropriate neurotransmitters.
Answer:
neurons are able to communicate through electrical impulses for example when a stimulus is detected the receptor cells transfer electrical impulses to the sensory neurons which is passed onto the relay neurons in the central nervous system and relayed to the motor neurons. the motor neurons travel with the electrical impulses which are transferred to the effectors to cause a response. However neurons travel and commu icate through synapses
an advertisement on tv claims children grow faster with the use of vitamin gro. vitamin gro is a 25mg pill taken twice a day. the viewer has little knowledge about how children grow, but he knows that children need a complete diet and a good exercise routine. he decided to put the commercial to the test. the viewer uses his 6 nieces who are the same age to conduct the experiments. to make the experiment easier he uses his six nieces using labels such as child 1, child 2 and so on. he records their height every 3 days for 7 days. What are the variables?
Answer:
Independent variable - vitamin gro and exercise routine.
Dependent variable - growth of children or nieces.
Explanation:
There are two variables present in an experiment called dependent and independent variables.
Independent variables are those variables which can be controlled in an experiment and dependent variables are those variables which are measured in the experiment under the influence of the independent variable.
In the given experiment, the independent variable will be vitamin gro and exercise routine and the dependent variable is the growth of children or nieces because vitamin gro and exercise routine can be controlled and growth of children is dependent on vitamin gro and exercise routine.
the origin of a muscle is generally
explain the question more
Answer: The stable and proximal attachment
Explanation:
The force of a muscle contraction is higher when the muscle is stimulated every 0.5 secs than when stimulated with the same voltage every 0.05 seconds.
a. True
b. False
Answer:
b. False
Explanation:
Increasing the frequency of muscle stimulation causes wave summation to occur, which causes an overlap of muscle twitch. When this muscle summation happens, the force generated in the muscle increases. This means that stimulating the muscle every 0.5 seconds will generate less muscle contraction force than when stimulated every 0.05 seconds
what type of rocks form from decaying plants
Answer:
Types of rocks are three types in :- metamorphic, igneous and sedimentary rocks, these are rocks formed dirt,soil and organic matter.
Explanation:
Sedimentary rocks are is known to plant contain animal fossils, there is a high level of animals and plant they develop layer of rock fuel include oil natural gas.
Sedimentary rock due to the consist addition of new particles by the water and erosion,basins found on to the earth fore arc and back arc basins.
Coal is the type of sedimentary rock that is plant and dead animals or organic matter,long period under time right conditions.
Sedimentary rock is different type carbonate, coal, chemically performed carbonate rock several kind of chalk and carbonate minerals.
Metamorphic and igneous rocks are abundant and they the most of rocks are on the earth actually are sedimentary rock,an animal and plant refuse one location and settle there soil and organic matter decaying animals.
Answer:
Organic sedimentary rocks form from decaying plants. Over time, organic matter from decaying plants and animals is pressed together and compacted to rocks.
Explanation:
I know it’s sorta not biology but oh well... so my teacher loves rocks and is wanting us to find a rock and name what type it is and so on and I know it is sedimentary but don’t know what type.
Answer:
I guess its sandstone
Myristoyl-CoA is a saturated fatty acid with 14 carbons attached to coenzyme A. How many molecules of ATP would be generated from the complete oxidation of a single molecule of myristoyl-CoA
Answer:
Total ATP molecules produced = 94 molecules of ATP
Explanation:
Myristoyl-CoA, is a saturated fatty acid with 14 carbons which has been activated for oxidation by attachment to coenzyme A. When it has undergone complete oxidation, it will yield 7 acetyl-CoA molecules and 6 FADH₂ and 6 NADH molecules each.
Each of the 7 acetyl-CoA molecules obtained from its initial oxidation enters into the citric acid cycle and is completely oxidized to yield further ATP and FADH₂ and NADH molecules.
The overall yield of ATP from the various enzymatic steps is shown below:
Acyl-CoA dehydrodenase = 6 FADH₂
β-Hydroxyacyl-CoA dehydrogenase = 6 NADH
Isocitrate dehydrogenase = 7 NADH
α-Ketoglutarate dehydrogenase = 7 NADH
Succinyl-CoA synthase = 7 ATP (from substrate-level phosphorylation)
Succinate dehydrogenase = 7 FADH₂
Malate dehydrogenase = 7 NADH
Note: 1 FADH2 molecule yields 1.5 ATP; 1 NADH molecule yields 2.5 ATP molecules. Therefore,
Total ATP from FADH₂ molecules = 13 * 1.5 = 19.5
Total NADH molecules = 27 * 2.5 = 67.5
Total ATP molecules produced = 19.5 + 67.5 + 7 = 94
Total ATP molecules produced = 94 molecules of ATP
By 1884, extensive hunting reduced the number of Northern elephant seals to fewer than 100. The extremely limited genetic variation in these seals is consistent with which genetic effect?
Answer:
Genetic drift, specifically the Bottleneck effect.
Explanation:
Genetic drift is an evolutionary mechanism in which the allelic frequencies in a population change through many generations. Its effects are harder in a small-sized population, meaning that this effect is inversely proportional to the population size. Genetic drift results in some alleles loss, even those that are beneficial for the population, and the fixation of some other alleles by an increase in their frequencies. The final consequence is to randomly fixate one of the alleles. Low-frequency alleles are the most likely to be lost. Genetic drift results in a loss of genetic variability within a population.
Genetic drift has important effects on a population when this last one reduces its size dramatically because of a disaster -bottleneck effect- or because of a population split -founder effect-.
The bottleneck effect is a special case of genetic drift, which is most likely to affect smaller populations. In the exposed example, extensive hunting reduced the number of Northern elephant seals, reducing the number of individuals to fewer than 100. This population experienced one or many generations of very small size since these animals were affected by hunting. As the survivors did not have the whole genetic pool of the original population, the population size might have recovered, but the genetic pool might have not.
Why are so many of the same genes found in almost all living organisms
Answer:
Molecular homology occurs when different species inherit similar molecules, such as nucleic acids or proteins, from an evolutionary common ancestor. In many cases, especially for essential housekeeping genes involved in protein synthesis or DNA replication, genes are homologous across most, if not all, living organisms. Hope this helps!
Explanation:
A coniferous forest that runs along the west coast of Canada and the United States, due to the moist winds off the Pacific, is called the
Pleaseeeee help me. When a rabbit eats a plant, nutrients from the
plant become available to the tissues of the
rabbit. During this process, some of the energy
from these nutrients is lost and the energy
becomes heat and unavailable chemical energy.
This energy loss partly explains why the total
energy is greater in
A. predator populations than in scavenger
populations.
B.consumer populations than in producer
populations.
C. producer populations than in consumer
populations.
D. predator populations than in prey populations,
Answer:
C.
Explanation:
Answer:
C.
Explanation:
total energy is greater in producer populations than in consumer populations
somebody help me please A cross is performed between a bird that is homo for red feathers and a bird that is homo for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. What proportion of the offspring from the second cross will be purple? 1 in 4 2 in 4 3 in 4 4 in 4
Answer:
2 in 4
Explanation:
Let PP are the gametes of red feather bird and pp are the gamete of blue feather bird. In the first cross they both will give purple feather bird because of incomplete dominance.
Consider Pp as the allele of purple offspring for the second cross. When two of the purple offspring are crossed, it will give the proportion of 2 in 4
F2: Pp X Pp
Offspring: PP, Pp,Pp, pp
So, only two offspring, Pp is with purple feathers while PP has red and pp has blue feathers.
Hence, the correct option is 2 in 4.
The proportion of the offspring from the second cross that would be purple will be 2 in 4.
Let us assume that the red feather color is controlled by allele A and that of blue feather color is controlled by allele B.
Homzygous red feather birds will have the genotype AA
Homzygous blue feather birds will have the genotype BB
Crossing the 2 birds:
AA x BB
AB AB AB AB
Thus, the purple offspring are AB.
Crossing 2 of the purple offspring:
AB x AB
AA AB AB BB
1 AA - red
2 AB - purple
1 BB - blue
Thus, 2/4 or 1/2 or 50% of the offspring from the second cross will be purple.
More on incomplete dominance can be found here: https://brainly.com/question/13402032
Consider a material for a vascular graft application with proteins adsorbed to its surface and a second material with proteins covalently attached to its surface. For which material would you expect the protein layer to be more stable under flow conditions similar to those found in a blood vessel? Why?
Answer is given below :
Explanation:
Individual-specific proteins are placed on the graft material so that the body does not recognize the graft as a foreign substance and treats it as a part of the body’s natural tissue structure. If the body recognizes the graft as a foreign substance, it produces an immune response against it and leads to a graft rejection reaction by the body. In order for these proteins to attach to grafts, a covalent bond for absorption must be preferred. Absorption is a reversible process and, if used, can lead to de-absorption of bound proteins, including blood, after dissolving by turbulence and pulling to the grafting material by blood flow (velocity up to 40 cm/sec). The remaining infectious tissue is detected foreignly, activating the immune response. On the other hand, covalent bonding is irreversible in nature and vascular flow does not have a disruptive effect on the bond between the graft and the protein, reducing the stable state of the graft and the possibility of rejection.A researcher wants to measure physical height in as much detail as possible. Which level of measurement does she employ?
Ratio level
Interval level
Ordinal level
Nominal level
ʏᴏᴜʀ ᴀɴsᴡᴇʀ
Ratio level is the correct option.
ᴇxᴘʟᴀɪɴᴀᴛɪᴏɴ:Scales of measurement provide information regarding the measurements and the values that have been assigned to the variables within it. Ratio level of data is a quantitative type of data and they have an absolute zero.
What is the retrovirus, and how does it work? Name an example of a retrovirus.
Answer:
A retrovirus is a type of RNA virus that inserts a clone of its genome into the DNA of a host cell that it invades. An example of a retrovirus would be HIV.
Hope this helps! :)
Explanation:
A retrovirus is a specific kind of RNA virus that, when it infects a host cell, will insert a clone of its genome into the DNA of the host cell. HIV is an example of a retrovirus that may infect humans.
What is a retrovirus?A kind of RNA virus known as a retrovirus copies its genome into the DNA of the host cell it invades. HIV is a prime example of a retrovirus.
A virus that employs RNA as its genetic material is referred to as a retrovirus. When a cell becomes infected with a retrovirus, the retroviral RNA is converted to retroviral DNA, which is then inserted into the DNA of the host cell.
Acute retroviral syndrome symptoms, which include headache, nausea, diarrhoea, and body pains, are comparable to those of the flu and go away on their own in a few of weeks. A person who has acute retroviral syndrome may no longer have any symptoms, yet they are nonetheless HIV-positive and remain contagious.
Learn more about retrovirus, here:
https://brainly.com/question/29172801
#SPJ2
