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Reverse transcriptase is an enzyme normally found in association with retroviral activity. Which of the following statements is true. Question 48 options: the enzyme requires no template more than one of the choices is correct the enzyme is catalytically similar to telomerase the enzyme can synthesize DNA from an RNA template the enzyme can synthesize of RNA from a DNA template
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Answer:
The true statement about Reverse Transcriptase is:
the enzyme can synthesize DNA from an RNA template
Explanation:
Reverse transcriptase or transcription synthesizes the enzymes of a DNA molecule using an RNA template. The resulting DNA, which is usually called cDNA or complementary DNA, can be used for the amplification of PCR (polymerase chain reaction). When the reverse transcription is followed by PCR, it is known as reverse transcription-PCR (RT-PCR), which is a combined laboratory technique.
Most of the energy radiated by Earth's surface at night is in the form of
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Answer:
infrared rays
Explanation:
The energy that Earth receives from sunlight is balanced by an equal amount of energy radiating into space. The energy escapes in the form of thermal infrared radiation: like the energy you feel radiating from a heat lamp.
A number of antiviral drugs act by preventing viral DNA synthesis. These drugs are typically chemically similar to nucleotides with a modification. For example, the drug may contain all relevant components of a nucleotide, including a proper purine or pyrimidine base, but lack the 3' OH group. How would this modification allow this drug to prevent viral DNA synthesis
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This modification allows the drug to prevent viral DNA synthesis by different mechanisms as an enzyme DNA polymerase follows.
What do you mean by DNA synthesis?DNA synthesis may be defined as the biological process by which a deoxyribonucleic acid (DNA) molecule is created.
The enzyme DNA polymerase adds some of the nucleotide bases to the strand that contains 3'-OH at the end. But when the end part of the strand lacks the 3' OH group, it inhibits the process of DNA transcription.
Therefore, this modification allows the drug to prevent viral DNA synthesis by different mechanisms as an enzyme DNA polymerase follows.
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similarity and one difference between water and wind dispersed seeds.
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Answer:
lights it can be dispersed by winds s compared by heavy seeds which can be dispersed buy water.
Explanation:
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The allele W, for white fur, is dominant over allele w, for black fur. In a sample of 500 mice, 476 are white and 24 are black. Estimate the allelic frequencies in this sample assuming the population is in equilibrium.
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Genetic drift: Evolution (defined as a change in allele frequencies) that occurs in ... Assume that 50% of the alleles for fur color in a population of mice are B ... Assume a population is in Hardy-Weinberg equilibrium for a given genetic ... What is the frequency of black heterozygous cattle in the population? ... White by blese.
Which agent is most likely the cause of chemical weathering to the tombstones in the cemetery? a)acid precipitation b)oxidation c)gravity
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indicate FOUR
reasons why you think having it may enhance responsible living in your environment
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Answer:
Can you please elaborate on ur question??
: d
In order to survive as a species, organisms must pass on their genetic information from one generation to the next. This is known as ?
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Answer:
Heredity
Explanation:
I just did this question on my assignment
According to the context, inheritance is the process to pass the genetic information of an organism from one generation to the next.
What is inheritance?They are the processes by which the physical, biochemical or morphological characteristics of living beings are transmitted from parents to their descendants.
This transmission occurs thanks to genes, minimal units of biological information contained in chromosomes and expressed molecularly in the DNA matrix.
Therefore, we can conclude that according to the context, inheritance is the process to pass the genetic information of an organism from one generation to the next.
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What is resource partitioning and how is it an adaptation to competition? Provide an
example.
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Definition:
Resource partitioning is the division of limited resources by species to help avoid competition in an ecological niche.
In any environment, organisms compete for limited resources, so organisms and different species have to find ways to coexist with one another.
Example:
Some lizard species appear to coexist because they consume insects of differing sizes.
The use of pesticides and fertilizers is carefully monitored because of the effect they can have on the environment. Which of the following is a possible negative effect of the use of these chemical on the environment?
A. These chemicals are expensive to produce.
B. Runoff carries these chemicals into lakes and streams.
C. Storage space for these chemicals is limited.
D. Theses chemicals cannot be purchased in large bulk.
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define the process of photosynthesis
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Answer:
The process by which the green plants prepare their food in presence of sunlight , water and carbon dioxide is called photosynthesis.
During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
In a swimming pool or lake, the water is a
liquid until the water temperature gets
down to 0 C or 32. F. Water in pools
stays liquid during Las Vegas winters,
with just a bit of ice forming if it gets really cold overnight. Even when it is
chilly in January and February (usually 15° C or 60° F), water stays liquid.
Then, when our area's temperature gets really hot in the summer (usually
about 40° C or 100. F), the water in the pool is still a liquid. It would have
to be 100. C or 212. F for the water in the pool to boil! Those
temperatures have never happened on Earth.
Remember, though, that water does not have to boil to turn to a gas.
Some of the water evaporates at all temperatures. Water temperature is a
measure of the average kinetic energy of its molecules. Some molecules
have more kinetic energy than others. The molecules that have enough
kinetic energy to break the bonds with other molecules can leave the
liquid and move off into the air. That is why you have to keep filling up the
swimming pool, even though it is not boiling.
Why does water stay liquid over a large range of temperatures? Hint:
Think about molecular structure.
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In your opinion, what is the WORST Environmental Impact of Invasive Species? Ready? Enter your answer here.
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Answer:
destruction of native species
Explanation:
Invasive species are destructive. They ruin ecosystems in which everything has a role, and all niches are full. With an invasive species, such as Pablo Escobar's hippos. A drug lord of South America had several hippos transported to his estate. Even after he died, the hippos flourished in South America. This was a perfect environment for the hippos as they had plenty to eat, and no threat where in Africa they would compete with lions, crocodiles and such. But the hippos just kept multiplying, eating food otherwise for native species, and destroyed the land with their size. The hippos endangered several species in the surrounding area at the cost of their easy living, as well as the people around.
Long story short, destruction of native species.
5. An insect population grows exponentially until an early winter freeze kills almost all the insects the next spring population
grows exponentially again this type of population growth is known as
A. rolling curve.
B. boom and bust.
O C. population boom.
D. exploding population.
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Answer:
The answer to this question is B
If a nucleotide is removed from a gene, the order of nucleotides will shift, resulting in new 1. _______ being coded for. These will combine to form a different 2._______ than what the 3._______ originally coded for.
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Answer:
Amino acid; protein; gene.
Explanation:
Genomics refers to the scientific study of genes (DNA) found in living organisms such as humans and animals.
A gene can be defined as a complete set of hereditary instructions that is typically found in the deoxyribonucleic acid (DNA).
A nucleotide can be defined as an organic molecule which forms the building block of nucleic acid such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Simply stated, a sequence of biomolecules which are responsible for coded genetic instructions in all living organisms is known as nucleotides.
Basically, nucleotide comprises of the following parts;
1. Nitrogenous base: this includes adenine (A), thymine (T), guanine (G), and cytosine (C) which are mainly found in the DNA while adenine (A), guanine (G), uracil (U) and cytosine (C) are found in the RNA.
2. A phosphate group.
3. A penrose sugar: it is either deoxyribose in DNA or ribose in RNA.
Furthermore, the two parts or chemical components of a nucleotide which do not change throughout the structure of DNA are;
I. Five-Carbon Sugar also known as deoxyribose and it has hydrogen on its second carbon.
II. Phosphate: this is the structural backbone that provides support to DNA.
Additionally, the proteins which are mainly synthesized based on the genetic instruction codes in deoxyribonucleic acid (DNA) determines the trait of living organisms.
Genome editing can be defined as a high-tech process which avail scientists the opportunity or ability to remove (delete), replace and insert Deoxyribonucleic Acid (DNA) sequence in a living organism such as bacterias, animals, plants etc in order to correct a genetic disorder and to improve on their physical and chemical conditions.
Hence, when you remove a nucleotide from a gene, the order of nucleotides shifts and as such resulting in new amino acid being coded for. These new amino acid will combine to form a different protein than what the gene was originally coded for.
How are sound energy and light energy similar? A. They both have a wavelength and a frequency. B. They are both kinds of mechanical energy. C. They are both carried from place to place by particles. D. Th
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Answer:
A because both sound and light energy that travel in waves and both have properties of wavelength, freqency and amplitude.
Which of the following defines an ecological succession
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Answer:Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time. The structure of this community becomes more complex as new species arrive on the scene.
Explanation:
PLEASE HELP! I WILL GIVE BRAINLIEST. Explain the process of succession.
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Explanation: Succession is a series of progressive changes in the composition of an ecological community over time. In primary succession, newly exposed or newly formed rock is colonized by living things for the first time.
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what is the role of bacteria in moving nitrogen through the ecosystem
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Answer:
The most important part of the cycle is bacteria. Bacteria help the nitrogen change between states so it can be used. When nitrogen is absorbed by the soil, different bacteria help it to change states so it can be absorbed by plants. Animals then get their nitrogen from the plants.
Answer:
Hope this helps....
Explanation:
Nitrogen-fixing bacteria convert free nitrogen gas into nitrogen compounds. ... Bacterias that are decomposers recycle nitrogen compounds in the soil by breaking down animal wastes and dead plants and animals. 3. Other bacteria break down nitrogen compounds and release free nitrogen back into the air.
PLEASE HELP!!!
A mutation occurs during protein synthesis. How will the protein produced be affected?
A) since the mutation causes a new code for a better amino acid, the protein will still function normally.
B) since the mutation causes a new code for the same amino acid, the protein will function normally.
C) since the mutation caused a new code for a better amino acid, the protein will be more powerful when performing its function.
D) since the mutation causes a new code for the same amino acid, the protein will be more powerful while performing its function.
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Flora y fauna y en clima frio??
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Answer:
Explanation:
no entiendo
Which substance keeps its shape, weight, and volume when it is moved to a bigger container?
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Answer:
Wood
Explanation:
Unless kept in a confined space, oil, are, and water will all naturally deform out of their previous shape when transferred to another container. Wood, on the other hand, is a solid, which means it will stay in it's shape.
a 30n force pushes a box to the left, a 40n force pushes a box to the right, the box will
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How does lateral gene transfer help explain the evolution of antibiotic resistance in bacteria?
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Answer:
Lateral gene transfer allows the bacteria to develop resistance to antibiotics and spread it between bacterial populations. ... This process allows bacteria to transfer genes from one population into another. As a result, the next generation would evolve and develop defenses that would make them resistant to the drug.
Explanation:
PLS SOMEONE DRAW ME Punnett square FOR THIS ASAP,
In mice, brown coat is dominant to black coat. If a pure breeding brown mouse is mated to a pure breeding black coated mouse, all of the offspring are brown. Fill in the Punnett square below to show this cross.
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Answer:
Punnett square drawn below:
Explanation:
Sorry if it's messy. Since brown coat is dominant to black coat, that would mean that the genotype for brown is either Aa or AA. Since it says it's a pure breeding brown mouse and that all of the offspring are brown, that means that the genotype for the pure breeding brown mouse is AA. As for the black coated mouse, black is reccessive, meaning the genotype would be aa. So... AA x aa = 100% Aa
Which statement best describes an exponential model of population
growth?
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Answer:
The Exponential Equation is a Standard Model Describing the Growth of a Single Population. The easiest way to capture the idea of a growing population is with a single-celled organism, such as a bacterium or a ciliate.
Explanation:
Which statement best describes the energy flow as it passes from producers to tertiary consumers?
Question 4 options:
Fifty percent of the energy produced passes to each trophic level.
Ten percent of the energy is transferred through each trophic level.
One hundred percent of the energy produced passes to each trophic level.
One percent of the energy produced passes to each trophic level.
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Carrying capacity is Group of answer choices seldom reached by marine producers and consumers because of the vast resources of the ocean. the maximum population size that a particular environment can support. fixed for most species over most of their range most of the time. the term used to describe the stress a population undergoes due to limited resources.
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Answer:
the maximum population size that a particular environment can support.
Explanation:
A population can be defined as the total number of living organisms living together in a particular place and sharing certain characteristics in common.
Generally, these populations may be divided into a fraction of the population (subpopulation) based on certain factors and reasons.
Population regulation can be defined as a biological process that balances limiting factors affecting the growth of a population based on density. The factors that regulate the growth of a population are divided into two (2) main categories and these includes;
I. Density-independent factors.
II. Density-dependent factors.
Density-dependent are regulating factors such as predation, diseases, and competition that affect the size of the population of living organisms through decreasing or increasing mortality and birth rate.
Furthermore, density-independent factors do not have an increasingly greater effect as a population's density increases. Thus, its effect are reduced as a population's density increases in size.
Carrying capacity is the maximum population size that a particular environment can support. The carrying capacity of an environment is denoted by the letter k.
If a drug was administered that would impede the binding of NAD+ to electrons what steps of cellular respiration would this substance affect
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Answer:
The correct answer is - not getting all NAD+ so burning more ATP to make up for the energy loss.
Explanation:
If the drug was administered and it would cause impedetion of the binding of NAD+ to electrons which causes decrease availability of the NAD+ that leads to less energy formation due to the use up more ATPs in the process of cellular respiration.
If NADH couldn't be formed as NAD+ will not binding, the cells will lose out on ATP produced. It will lead to weight loss due to burning out more ATP to make up for the energy loss.
Circle the pairing of organisms from Model 3 that you predict would have the most divergence in their DNA. Support your choices with a group discussion about morphology (observable characteristics and structure), ecology, and lifestyles of the animals
a. whale and human or whale and tuna
b. pig and rhesus monkey or pig and chicken
c. tuna and fly or tuna and chicken
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Answer:
a. whale and tuna
b. pig and chicken
c. tuna and fly
Explanation:
Following, you will find characteristics of each species that differ in the contrasting groups. These descriptions reflect the divergence degree between groups.
a. whale and tuna
Whales: Vertebrate and Big-sized marine mammals. They are long-lived and pulmonate animals. They are relatively slow, and only breathe while they are on the surface, opening the blowhole which covers the narines. Despite being mammals, they lack hair, so they have naked soft skin. They have one dorsal fin, two lateral flippers, and a caudal horizontal fin, which they move up and down. They are viviparous, with internal fecundation, and females carry mammal glands to feed their offspring. They feed on krill and other small animals, which they filtrate using their baleens. Whales exhibit the Type I survivorship curve. Mortality often occurs at the end of the cycle. They have long cycles of life and high probabilities to survive until they are old enough. These species have few descendants and spend too much time and energy in parental care to ensure their reproductive success. They are used to swim deep depth or near the surface depending on the reproductive cycle stage. Tuna: Bony marine fish. Fusiform and medium-sized body, fast swimmers. They can live for 15 years. Their body is covered with scams. They have two dorsal fins, two ventral fins, two lateral fins, and a caudal fin which they move from side to side. It swims near the surface and interchange gas using the grills. They have many teeth and feed on anything they can, such as small fishes, zooplankton, crustaceans, and mollusks. They have external fecundation and exhibit the Type III survivorship curve. Significant mortality during the early stages of life. Only a few individuals reach the later life stages, getting to survive their first period of life. Survivors usually have a long life. These species produce big offsprings at the same time, but they provide little or no parental care. Their reproductive success relies on the number of descendants.b. pig and chicken
Pigs: Heary Mammal, with thick hairs, called bristles and mammal glands. They are four-legged, have hooves and four fingers. Their snout is long and flexible, with sharp teeth. They have a curly tail and thick and sensitive skin. Naturally, they are herbivorous but became omnivorous in captivity. They can live for ten or fifteen years. Viviparous. Well-developed smell sense and no sudoriparous glands. Territorial, dominant, and highly communicative with partners. They can use more than twenty different sounds. They also exhibit the Type I survivorship curve.Chickens: Birds. They have two legs and two wings however, it has never been successful in flying. Their body is cover by feathers. They have no hair, and they do not have teeth either, but they have a corneous peak instead. They are omnivorous. They show sexual dimorphism, especially in feathers and crests. They exhibit the type II survivorship curve. The probabilities of dying are equals all along the cycle, at any age interval. The number of dead individuals remains constant from the beginning to the end of the life cycle. These species have reduced offsprings, and they ensure their reproductive success by providing some significant parental care.c. tuna and fly
Tuna: Already described aboveFly: Flying and small-sized Insects. Dipterous, with their bodies divided into three regions: Head, thorax, and abdomen. They have six appendixes to walk, one pair of wee-developed wings, one pair of vestigial wings, eyes very sensitive to light. The mouthparts are used to lick, suck or bite. Some species can sting and suck blood from humans. Their body is covered with thin hairs and sensory bristles used to taste, feel, and smell. They are attracted by smelly matter, from which they feed on. In general, flies are associated to matter in decomposition and wastes. They have a short life cycle and can live up to twenty-five days. Ovoviviparous species, laying too many eggs that will turn into larvae and finally to the adult fly stage.Based on Model 3, the pairing of organisms that would have the most divergence in their DNA is: A. whale and human or whale and tuna.
What is genetics?Genetics can be defined as the scientific study of genes, chromosomes, heredity and the similarities or divergence (variations) of traits (DNA) in living organisms such as animals, humans, and plants.
Based on morphology and ecology, whales are aquatic and gigantic vertebrate (mammals) that only live in water. Also, whales are pulmonate and carnivorous animals that feed on other animals.
From Model 3, the number of amino acids differences between whale and human is ten (10) while that of whale and tuna is equal to seventeen (17). Therefore, we can deduce that the pairing of organisms that would have the most divergence in their DNA is whale and human or whale and tuna.
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