which of the following is a function of a poly-a tail in mrna? responses it indicates the site of translational termination. it indicates the site of translational termination., it is a sequence that codes for the binding of rna polymerase to the dna. it is a sequence that codes for the binding of rna polymerase to the dna., it adds the modified guanine to the 3' end of the mrna. it adds the modified guanine to the 3' end of the mrna., it helps protect the mrna from degradation by hydrolytic enzymes.
Answers
The function of a poly-A tail in mRNA is that it helps protect the mRNA from degradation by hydrolytic enzymes. The poly-A tail is added to the 3' end of the mRNA molecule, providing stability and protection from degradation.
What is mRNA?
mRNA (messenger RNA) is a molecule that carries genetic information from the DNA in a cell's nucleus to the ribosome, which is the cell's protein-making machinery. It carries genetic information from DNA to the protein-synthesis site, the ribosome, in the form of codons, which are sets of three nucleotides that specify the amino acids that make up a protein.
Poly-A tail of mRNA:
Most eukaryotic mRNAs have a poly-A tail at their 3' end, which is a long string of adenine nucleotides. The poly-A tail assists in the export of the mRNA from the nucleus to the cytoplasm and aids in the translation of the mRNA. Furthermore, it aids in the stabilization of the mRNA by protecting it from degradation by hydrolytic enzymes.
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Related Questions
When a plant is not strong enough to hold its own weight what’s most likely the problem?
Answers
The main factor resulting in the weakening of plant stems is the absence of firm xylem tissues.
What holds the plant's weight up?Sclerenchyma tissue is composed of stiff cells that serve to sustain the weight of a plant organ. Sclerenchyma cells come in two different varieties: fibers and sclereids. The five elements that plants require to thrive are sunlight, the right temperature, moisture, air, and nutrition.
The natural or manmade habitats where plants live give these five things. Simply put, a lack of nutrients is one of the most frequent causes of houseplants ceasing to grow. Even though it may seem simple, one of the most frequent causes of a plant's failure to develop is a lack of the nutrients it needs to survive.
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Which of the following is not an example of green infrastructure?
OUrban tree canopy
O Permeable pavement
Rainwater harvesting
Streets and parking lots
Answers
Answer:
Streets and parking lots
Explanation:
The example that is not an example of green infrastructure from the given options is Streets and parking lots.Green infrastructure refers to the network of natural and semi-natural features, green spaces, and ecological systems in cities and towns. It is an approach to managing stormwater runoff that emphasizes infiltration and the use of natural systems to filter pollutants from water.Green infrastructure helps to manage stormwater, improve air quality, and create healthier urban environments. It includes practices such as urban tree canopy, permeable pavement, and rainwater harvesting. Streets and parking lots, on the other hand, are not examples of green infrastructure.
an additional attractive feature of donkeys as a domesticated animal was
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what is the fate of glucose 6-phosphate that enters the pentose phosphate pathway in the flight muscles of hummingbirds?
Answers
The right response is that ribose-5-phosphate and carbon dioxide are created from glucose-6-phosphate.
The glucose-6-phosphate is converted into ribose-5-phosphate, which is the five-carbon sugar molecule and carbon dioxide, after entering the pentose phosphate pathway. Following the entry into the route, glucose-6-phosphate is initially converted into 6-phosphogluconolactone by the enzyme glucose-6-phosphate dehydrogenase.
The generation of NADPH also occurs during the conversion of glucose-6-phosphate to the lactone molecule. By the action of the enzyme lactonase, 6-phosphogluconate is created from the 6-phosphogluconolactone that is generated. This is further decarboxylated and hydrolyzed into carbon dioxide and ribose-5-phosphate by the action of the enzyme 6-phosphogluconate dehydrogenase. The hummingbird's flight muscles convert glucose-6-phosphate in order to produce NADPH and protect against oxidative stress.
The complete question is:-
What is the fate of glucose 6-phosphate that enters the pentose phosphate pathway in the flight muscles of hummingbirds? Glucose 6-phosphate is converted to carbon dioxide and ribose 5-phosphate. Glucose 6-phosphate is converted to ribose 5-phosphate. Glucose 6-phosphate is converted to carbon dioxide and pyruvate. Glucose 6-phosphate is converted to carbon dioxide.
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which domain contains organisms with membrane bound nuclei?
Answers
The Eukarya domain have nuclei that are attached to membranes (includes protist, plants, fungi and animals).
The three domains of life on earth are bacteria, archaea, and eukarya. All of the microorganisms in the first two are single-celled. They don't each have a nucleus. Organisms with cells that have a nucleus make up the third domain, called Eukarya. Furthermore, it is the only domain where multicellular, observable species like humans, animals, plants, and trees exist.
Only the domain Eukarya contains multicellular, visible organisms like humans, animals, plants, and trees. Many microorganisms, including fungi, algae, and micro-animals, inhabit this region as well. Because of their genetic diversity, two distinct fungus can have as dissimilar of a genetic makeup as a person and a fish.
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Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated.
1. sporophyte dominance, gametophyte independence
2. sporophyte dominance, gametophyte dependence
3. gametophyte dominance, sporophyte dependence
a.1 -> 2 -> 3
b.3 -> 1 -> 2
c.2 -> 1 -> 3
d.2 -> 3 -> 1
e.3 -> 2-> 1
Answers
The correct sequence, from earliest to most recent, in which these plant traits originated is:
c. 2 -> 1 -> 3
1. sporophyte dominance, gametophyte independence (2) - This trait originated first, where the sporophyte generation became dominant in the plant life cycle, and the gametophyte generation became less independent.
2. sporophyte dominance, gametophyte dependence (1) - This trait originated next, where the sporophyte generation remained dominant, but the gametophyte generation became more dependent on the sporophyte for nutrition and support.
3. gametophyte dominance, sporophyte dependence (3) - This trait originated last, where the gametophyte generation became dominant in the plant life cycle, and the sporophyte generation became dependent on the gametophyte for nutrition and support.
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What is the role of a flagella in the animal cell?
Answers
Answer:
The primary function of a flagellum is that of motility. In some bacteria the flagellum can also function as a sensory organelle, being sensitive to wetness, chemicals, and temperatures outside the cell. Flagella are organelles defined by function rather than structure.
Explanation:
flagellum, plural flagella, hairlike structure that acts primarily as an organelle of locomotion in the cells of many living organisms. Flagella, characteristic of the protozoan group Mastigophora, also occur on the gametes of algae, fungi, mosses, slime molds, and animals.
A prey population consists of individuals with a variety of reaction times. The adaptation that allows some of these animals to react faster would be an example of natural selection if it helps them a. Reduce the mortality rate of the population
b. Reproduce and increase gene frequency in the population
c. Survive and mate
d. Produce offspring that can react at an average speed
Answers
The correct answer is option (A) Reduce the mortality rate of the population.
Natural selection is a pressure that causes groups of organisms to change over time. Animals inherit their genetics from their parents or ancestors, and the environment is constantly changing. So, no organism is perfectly adapted to its environment. Thus, natural selection is constantly influencing the evolution of species.
The environment will change, even if a parent was perfectly acclimated to it, leaving the offspring poorly adapted to it. Only the best and fittest organisms can reproduce since there are many species and few resources. Natural selection, which is thought of as the environment and forces acting to prevent organisms from surviving and reproducing, operates against all living things. As a result, living things have the ability to pass on their DNA to the next generation. These DNA sequences are "selected" for by this.
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• Research Alexander Fleming
• Find out:
• What he discovered
• How he discovered it
• What the impact of the discovery was
PLEASE HELP
Answers
Answer:
1) He discovered penicillin.
2) He accidentally discovered it when he went on vacation and came back to a green mould called penicillin had contaminated the Petri dishes in his lab and found that it was skilling the bacteria he had been growing.
3) Penicillin is extremely important. Wounds that would be fatal back in the day could be quickly treated with penicillin. Penicillin also inspired others to test other natural products that are now used today.
What happens during meiosis to make new unique gametes?
Answers
Homologous chromosomes (one from each parent) pair along their lengths during meiosis. Chiasma points are where the chromosomes cross. The chromosomes split and reassemble at each chiasma, swapping some of their genes. Genetic variety is produced by this recombination.
Meiosis, often known as "lessening" since it is a reductional division, is a unique form of germ cell division in sexually reproducing animals that results in gametes like sperm or egg cells.
It comprises two rounds of division, producing four cells with just one copy of each chromosome as a final product (haploid). Furthermore, genetic material from the paternal and maternal copies of each chromosome is crossed over prior to division, resulting in novel combinations of coding on each chromosome.
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In which situations will the particle stop momentarily?
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Particles can stop momentarily in different situations, depending on the physical forces acting on them.
Here are some examples:
Projectile motion: A particle thrown upwards will stop momentarily at the highest point of its trajectory before falling back down due to the force of gravity.
Simple harmonic motion: A particle undergoing simple harmonic motion will stop momentarily at the two extreme points of its motion, known as the amplitude points.
Collision: A particle that collides with a stationary object can stop momentarily before bouncing back due to the transfer of kinetic energy.
Brownian motion: A particle undergoing Brownian motion in a fluid will stop momentarily when it collides with other particles or the walls of the container.
Electromagnetic force: Charged particles can stop momentarily when they interact with electric or magnetic fields, as the forces acting on them can cause them to come to a temporary halt.
In each of these situations, the particle stops momentarily due to the balance or cancellation of the physical forces acting on it. However, the duration of the stoppage can vary widely depending on the specific circumstances of the situation.
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Describe the significance of enzymes in our digestive system having different optimal pH and optimal temperatures. (Hint: What does this allow our bodies to do?)
Answers
Answer:
Digestive enzymes play a key role in breaking down the food you eat. These proteins speed up chemical reactions that turn nutrients into substances that your digestive tract can absorb. Your saliva has digestive enzymes in it. Some of your organs, including your pancreas, gallbladder, and liver, also release them.
For most enzymes to operate in the body, the optimal temperature is 37 degree Celsius or 98 degrees Fahrenheit. Most of the human enzymes have a maximal activity at pH around 7.2, which is the pH of most body fluids. However, there are exceptions such as, pepsin.
on monday, millie puts a quart of seeds, 25% of which are millet, into a bird feeder. on each successive day she adds another quart of the same mix of seeds without removing any seeds that are left. each day the birds eat only 25% of the millet in the feeder, but they eat all of the other seeds. on which day, just after millie has placed the seeds, will the birds find that more than half the seeds in the feeder are millet?
Answers
On the fifth day, after Millie has placed the seeds, the birds will find that more than half the seeds in the feeder are millet. What are the steps to solve the problem Initially, there are 25% of millet seeds in the mixture. Therefore, 75% of the seeds in the mixture are non-millet seeds.
Day 1Millie puts 1 quart of seed in the bird feeder. Therefore,
25% of millet seeds in 1 quart = 0.25 × 1 = 0.25 quarts of millet. The remaining seeds in the quart are non-millet seeds.
The total remaining non-millet = 0.75 - 0.75 = 0 quarts Day 3
The total seeds that the birds will eat
on the third day = 0.75 quarts non-millet seeds + 0.25 × 0.1875 quarts millet seeds = 0.7969 quarts seeds.
On day 3, the birds ate 0.046875 quarts of millet and 0.75 quarts of non-millet seeds.
Day 5 The total seeds that the birds will eat on the fifth day = 0.75 quarts non-millet seeds + 0.25 × 0.10546875 quarts millet seeds = 0.73828 quarts seeds.
On day 5, the birds ate 0.0263671875 quarts of millet and 0.75 quarts of non-millet seeds. The total remaining millet = 0.10546875 - 0.0263671875 = 0.0791015625 quarts.
The total remaining non-millet = 0 quarts.Therefore, on the fifth day, after Millie has placed the seeds, the birds will find that more than half the seeds in the feeder are millet.
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the ______ cardiac vein runs alongside the ______ interventricular artery
Answers
The great cardiac vein runs alongside the anterior interventricular artery.
The great cardiac vein is a major blood vessel in the heart that runs alongside the anterior interventricular artery. This vein collects deoxygenated blood from the anterior portion of the heart and drains it into the coronary sinus, which then empties into the right atrium of the heart. The anterior interventricular artery, also known as the left anterior descending artery, is responsible for supplying oxygenated blood to the anterior walls of the left ventricle and the interventricular septum. It is one of the major arteries in the heart and is often involved in coronary artery disease.
In summary, the great cardiac vein runs alongside the anterior interventricular artery in the heart, and both play crucial roles in the circulation of blood throughout the body.
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You are a scientist on the soloman islands. You are assigned with making recommendations
Answers
Biodiversity Conservation: The Solomon Islands are home to rich biodiversity, containing singular environments and endangered class.
What is the recommendations?It is important to plan out biodiversity preservation through system which controls organization and administration of protected fields, in the way that nationwide parks and sea reserves
Climate Change Adaptation: The Solomon Islands are vulnerable to the impacts of temperature change, containing climbing ocean levels, raised frequency of extreme weather occurrences, and sea acidification. It is main to expand and implement agreement actions that focus on marshy care, tenable land use preparation, and trend-resilient foundation
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The kidney nephrons filter around 125cm3 of blood in one minute.
Calculate the total volume of blood filtered by the kidney nephrons in 24 hours.
Answers
Answer:
180,000 volume of blood
Explanation:
So the nephrons filter 125 cm^3 of blood in 1 minute so when finding 24 hours you know 1 hour has 60 minutes so multiply 125 by 60 to get 7500 which is the blood filtered in 1 hour and since you need 24 hours multiply this 7500 by 24 to get your final answer of 180,000 volumes of blood filtered.
at which structure does communication between two neurons or between a neuron and a target tissue occur?
Answers
Communication between neurons occurs at tiny gaps called synapses, where specialized parts of the two cells (i.e., the presynaptic and postsynaptic neurons) come within nanometers of one another to allow for chemical transmission.
Which dye could the technician use to determine whether the cells are prokaryotic or eukaryotic?
Eosin
Nile blue
Acridine Orange
Osmium Tetroxide
Answers
Answer:
nile blue should be the correct answer
De acuerdo con lo anterior llene el siguiente cuadro comparativo señalando con x si las células procariotas o eucariotas posee las estructuras mencionadas
Answers
Answer:
El cuadro no está presente pero las diferencias principales entre células eucariotas y procariotas son:
Eucariotas:
Tienen núcleo
Tienen organelas
Tienen Vacuolas
Tienen Citoesqueleto
Tienen Cloroplastos
El ADN está asociado a proteínas
El ADN es lineal
Presentan mitocondrias
Presentan un sistema de endomembranas
Procariotas:
No tienen núcleo
No tienen vacuolas
No tienen cloroplastos
No tienen organelas
El ADN no está asociado a proteínas
El ADN es circular
Presenta mesosomas
Explanation:
Las células procariotas son más primitivas que las eucariotas, por ende, sus estructuras son más simples. Las células procariotas están en organismos unicelulares tales como las bacterias, mientras que las células eucariotas están en organismos unicelulares y pluricelulares como en plantas, animales, u hongos. La diferencia más notoria entre ambos tipos de células es la ausencia de núcleo en las procariotas haciendo que el ADN está disperso en el citoplasma mientras que en las células eucariotas, el ADN está dentro del núcleo celular.
Recall the three tenets of the cell theory. Which of these statements can be used to determine that viruses are non-living?
A)
do not contain nuclei.
B)
are not composed of cells.
are not able to reproduce.
D)
do not contain nucleic acid
Answers
Answer:
B. Are not composed of cells
Explanation:
Which of the evolutionary factors are we not testing with the allelea1 program?a. Sexual Selectionb. Natural Selectionc. Mutationd. Gene Flow
Answers
Gene Flow is one of the evolutionary factors that are not testing with the allelea1 program. The correct option is D
What is evolution ?Evolution can be defined as a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes and new species.
Natural selection is considered the main mechanism that causes populations to evolve. However there are several other mechanisms of evolution including mutation, genetic drift and gene flow.
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helpppp pleaseeeee I’ll
Answers
Explanation:
option B is false...........
Answer:
option b is FALSE
Explanation:
The minimum number of individuals needed for a species to continue is its ___________.
endangered species
critical mass
minimum species
extinction
Answers
Answer:
critical mass
Answer:
The answer is number 2.
Explanation:
Hope this helps!!
Biomagnification and mercury concentrations in the ocean most often occur __________.
a.
throughout the food chain
b.
in larger fish such as tuna and swordfish
c.
in smaller fish such as herring and mackerel
d.
in crustaceans such as crab, shrimp, and lobster
Answers
Answer:the answer is c
Answer: Choice B- in larger fish such as tuna and swordfish
Explanation:
The boook says so.
When a genome is modified for
medical or industrial use, it is
known as
A. genetic engineering
B. meiosis
C. electrophoresis
D. genome exchange
Answers
When a genome is modified for medical or industrial use it is known as genetic engineering .
What is genetic engineering and how the genome is modified?Genetic engineering is the process of manipulation of human gene or DNA in order to produce phenotypes of desirable amount.In the process first we isolate a DNA which is desired and then the process of combination with vector takes place.For selecting vector the number of vectors selected must be few as it could generate more fragments.The recombinant DNA is formed by the fusion of Vector and desired DNA in medical use.Then the process of cloning takes place and finally what takes place is called downstreaming process.In downstreaming process one purifies and finally release the product as final product of genome.To know more about genetic engineering visit:
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Blue Avocado makes reusable lunch and food bags and sells its products through three local grocery stores, one home organization retail chain, and two additional stores that cater to elementary schools and online clientele. By having its products available in a variety of places, Blue Avocado is relying on which primary purpose of its distribution channels
Answers
By having its products available in various places such as local grocery stores, a home organization retail chain, elementary school stores, and online platforms.
The primary purpose of distribution channels is to ensure that products or services reach the target customers effectively and efficiently. One of the key objectives of distribution channels is maximizing market coverage, which refers to making the products available in as many locations as possible to reach a broader customer base.
In the case of Blue Avocado, they have strategically chosen multiple distribution channels to sell their reusable lunch and food bags. By selling their products through three local grocery stores, a home organization retail chain, elementary school stores, and online platforms, they are leveraging various channels to maximize market coverage. This approach allows Blue Avocado to reach different customer segments through different retail outlets and cater to the diverse preferences and convenience of their target customers.
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List the composition of the unaltered hard parts for each organism or part of an organism (for example, calcite, aragonite, phosphate, silica or organic). Organism Composition of Hard Parts a. Shark tooth b. Clam c. Brachiopod d. Crinoid e. Scallop f. Whale bone g. Wood h. Snail i. Fish j. Sponge k. Diatom I. Foraminifera m. Coral n. Radiolarian 1047 7/20
Answers
calcium and phosphate and carbonate are present in the composition of unaltered hard parts for each organism or part of an organism.
Organism Composition of Hard Parts Shark tooth Calcium phosphate Clam Calcium carbonate Brachiopod Calcium phosphate and calcium carbonate Crinoid Calcium carbonate Scallop Calcium carbonate Whale bone Calcium phosphate and collagen Wood Cellulose Snail Calcium carbonate Fish Calcium phosphate Sponge Calcium carbonate Diatom Silica Foraminifera Calcium carbonate Coral Calcium carbonate Radiolarian Silica.
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Most endosymbionts are proteobacteria and are ______. Streptococcus and Staphylococus are ______.
Answers
Most endosymbionts are proteobacteria and are gram negative. Streptococcus and Staphylococus are gram positive.
A group of gram-positive bacteria is known as Streptococcus pyogenes. It belongs to the family Streptococcus and is aerotolerant. Many human diseases are caused by this chain-spreading bacterium. Rheumatic fever, post-streptococcal glomerulonephritis, pharyngitis, tonsillitis, necrotizing fasciitis, myonecrosis, scarlet fever, and cellulitis are a few of the illnesses they can cause. Another name for this bacterium is group A streptococcus (GAS). The strep throat is their fault. Many children have Group A beta hemolytic streptococci in their oropharynx.
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The middle muscular layer of the heart wall - the thickest and pumps blood through the vessels is called ___
Answers
The middle muscular layer of the heart wall - the thickest and pumps blood through the vessels is called the myocardium.
The myocardium is the middle and thickest layer of the heart wall, located between the inner endocardium and the outer epicardium. It is composed of cardiac muscle cells, also called cardiomyocytes, that are specialized to contract and relax in order to pump blood through the circulatory system.
The myocardium is responsible for the contraction of the heart and generates the force needed to push blood through the arteries and veins. It also contains the electrical conduction system that regulates the heartbeat and ensures coordinated contractions of the heart chambers. The thickness and strength of the myocardium varies depending on the size and workload of the heart.
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13) What are the 5 ELEMENTS found in DNA and other Nucleic acids, like RNA?
Answers
Answer:
Nucleic acids contain the same elements as proteins: carbon, hydrogen, oxygen, nitrogen; plus phosphorous (C, H, O, N, and P). Nucleic acids are very large macromolecules composed of repetitive units of the same building blocks, nucleotides, similar to a pearl necklace made of many pearls.