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USPshnik [31]
3 years ago
9

N 9 Viruses use the host's machinery to make copies of themselves. However, some human viruses require a type of replication tha

t humans do not normally do. For example, humans normally do not have the ability to convert RNA into DNA. How can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires?
Biology
1 answer:
Amanda [17]3 years ago
6 0

Answer:

<u>This is because  the Viron  has in its genome a specialized code  for synthesising any missed enzyme for replication that is lacking in the host cell.</u>

<u>An example is the replication of the human  DNA cells by the Immunodeficiency virus(HIV) </u>. Human  cells only have  enzymes for  copying  DNA templates, and   lacks the enzyme to convert the HIV  RNA genome  to human DNA.However these viruses have  in its genome; code for synthesising its own  RNA polymerase enzymes that copies  or transcribed  the   human DNA to HIV RNA.

 <u>This  ability of the viral cell  to code  for the host's enzyme  has a therapeutic effect</u>. Drugs can be targeted at the  viral polymerase enzymes to reduce the replication and therefore toxicity in the host cells.

Explanation:

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Identify the isolation mechanisms described using the drop-down menus. Differences in courtship or other behaviors prevent matin
lana [24]

Answer:

First, let's add the missing piece of information

Identify the isolation mechanisms by labeling either Geographical, Behavioral, Temporal, or Anatomical from the drop-down menu

The correctly identified mechanism is

1. Behavioral

2. Geographical

3. Temporal

4. Antomical

Explanation:

Differences in courtship or other behaviors prevent mating.- our answer is Behavioral

(Behavior isolation is the term used to describe reproductive isolation as a result of variations in courtship behaviours between the members of the same species occupying the same region).

Species can no longer interact because they are separated by physical boundaries.- it is Geographical

(Geographic isolation is seen in situations where the two populations of the same species get isolated by a geographical barrier such as mountain, island or river. This results in an inability to breed between the two populations as they become distinct new species).

Species do not interbreed because they breed at different times. this is definately Temporal.

(Temporal isolation is a form of reproductive isolation due to mating at separate times and seasons among two populations of the same species).

Species cannot physically mate due to genitalia or gametes being incompatible. And the correct answer is Antomical.

(Anatomical isolation

It is observed in situations when two populations of the same or distinct species cannot interbreed due to physical features such as genitalia and gametes formed in the organisms that make them uniquely separated).

Yes! this is the right answer. I just solved this question and its CORRECT.

6 0
3 years ago
Read 2 more answers
What is Kingdom Monera?
Tomtit [17]

Answer:

Monerais a kingdom that contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria.They are single-celled organisms with no true nuclear membrane (prokaryotic organisms).

Explanation:

5 0
3 years ago
What term describes the rising and sinking of the lithosphere as material is added or removed?
Margaret [11]
<span>Composition. (We use the crust-mantle-core terminology to describe differences in chemical composition in Earth's interior. We use the lithosphere- asthenosphere terminology to describe differences the physical state and behavior. Note that the boundaries between layers with different compositions do not occur at the same depths as the boundaries between layers with different physical properties. For example, there is a change in composition when passing from crust into mantle. But there is no change in physical state or behavior at this boundary- the uppermost part of the mantle behaves in the same way that the crust does because it is still far enough below its melting temperature to be a rigid, brittle solid. The transition to a softer, more pliable solid occurs further down within the mantle and this change in behavior occurs with no change in composition.)</span>
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3 years ago
the term applied when water passes through a selectively permeable membrane from an area of high to low concentration is
AleksandrR [38]
The process is called osmosis.
5 0
3 years ago
Which type of change cannot be reversed
salantis [7]

Answer:

Changes that cannot be reversed are called irreversible changes

Example: if you cook an egg or if something goes bad. these changes can not be reversed.  

3 0
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