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AveGali [126]
2 years ago
5

Which of the following is true of retroviruses? (3 points)

Biology
1 answer:
Nikitich [7]2 years ago
8 0

Answer:

Explanation:

A retrovirus is an RNA virus that is duplicated in a host cell using the reverse transcriptase enzyme to produce DNA from its RNA genome. The DNA is then incorporated into the host’s genome by an integrase enzyme. The virus thereafter replicates as part of the host cell’s DNA. Retroviruses are enveloped viruses that belong to the viral family Retroviridae. A special variant of retroviruses are endogenous retroviruses, which are integrated into the genome of the host and inherited across generations. Endogenous retroviruses are a type of transposon.

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Fil in the blanks:1. A fat molecule is composed of two types of smaller molecules, including only one molecule of _________. 2.
Sedbober [7]

Answer:

1. Glycerol

2. Fatty acids

3. Monoglycerides

4. Triglycerides

5. Hydrocarbon

6. Hydrophobic

Explanation:

1. Glycerol

Fat consist of a molecule called glycerol that is attached to one, two, or three fatty acids. Glycerol is the basis of all fats and consists of a three-carbon chain that is attached to the fatty acids.

2. Fatty acids

Fats is made up of three fatty acids and a glycerol, it can also be called triacylglycerols or triglycerides.

3. Monoglyceride

It is a glycerol molecule with a singular fatty acid. It is formed through the combination of OH of glycerol to the OH of the fatty acid.

4. Triglycerides

It has three fatty acid molecules. It is a tri-esters made up of a glycerol attached to three fatty acid molecules.

5. Hydrocarbon

Fatty acids is made up of long, unbranched hydrocarbons with a carboxylic acid group found at one end.

6. Hydrophobic

The hydrophobic nature of fat arises from the carbon-hydrogen bonds that are nonpolar.

3 0
3 years ago
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Carbon atoms have four electrons in their outer shell. This means that a single carbon atom can form up to _______ bonds with ot
Levart [38]

Answer:

four

Explanation:

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The scientific attitude of skepticism is based on the belief that
denis-greek [22]

Answer:

Questions, hypotheses, and ideas should be tested against observable evidence.

Explanation:

Skepticism is extremely important, if not fundamental, in all areas of Science. This attitude is based on the belief that all questions, hypotheses, and ideas should be tested against observable evidence. Moreover, it allows scientists to <u>question and think thoroughly about all possibilities behind a phenomenon, instead of just 'believing' any observation or vague and non-supported reason that explains it.</u>

In addition, it allows researchers to investigate all possibilities and test numerous methodologies to be certain and gather enough evidence to explain this certain phenomenon.

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MAVERICK [17]

Answer:

1 Photosynthesis uses CO2 and expels O2 and the reverse for respiration

2. stratosphere where ~90% of it is

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Explanation:

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3 years ago
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The smallest living unit within the human body is
Annette [7]
A cell is the smallest LIVING unit in a body. An atom is the smallest "nonliving" unit.
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