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vaieri [72.5K]
3 years ago
11

Most RNA viruses carry which of the following enzymes?

Biology
1 answer:
Dominik [7]3 years ago
6 0

Answer:

The correct answer will be option-B.

Explanation:

Viral polymerases are the enzymes which play an important role in the viral genome transcription and replication.

Retrovirus is the single-stranded RNA viruses which replicate through a DNA intermediate and therefore requires the <em>RNA-dependent DNA polymerase or reverse transcriptase</em>. Reverse transcriptase encodes DNA from the strand of RNA which can be replicated and helps in the reproduction of the virus.

Thus, option- B is the correct answer.

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Which of the following is not a step of Natural Selection?
kati45 [8]

Answer:

im pretty sure it is underpopulation.

6 0
3 years ago
What is a protein that is the main component of the thick filaments in muscle fibers and is responsible for muscle contraction?
STatiana [176]

Answer:

Myosin

Explanation:

Two of the important proteins are myosin, which forms the thick filament, and actin, which forms the thin filament. Myosin has a long, fibrous tail and a globular head, which binds to actin. The myosin head also binds to ATP, which is the source of energy for muscle movement

4 0
3 years ago
A student needs to prepare 250 mL of a 0.550 M aqueous solution of sucrose, C 12 H 22 O 11 ( aq ) , which is used frequently in
Grace [21]

Answer:

Dissolve 47.025 grams of sucrose in enough water to produce 250 ml of solution.

Explanation:

You need to prepare 250. mL of a 0.550 M aqueous solution of sucrose, C12H22O11 (aq),

which is used frequently in biological experiments.

Based on your answer above, what is the value of x?

Solution:

A 0.550 M aqueous solution contains 0.550 mole of sucrose per liter of solution.

250 ml = 0.250 liter

Thus a 0.250 liter of a 0.550 M aqueous solution of sucrose contains 0.250 * 0.550 = 0.1375 mole of sucrose

Recall:

Mass = number of moles * mass of 1 mole

mass of 1 mole of C12H22O11

= 12(12) + 1(22) + 16(11)

= 144 + 22 + 176

= 342 grams

Mass = 0.1375 * 342 = 47.025 grams of sucrose.

Dissolve 47.025 grams of sucrose in enough water to produce 250 ml of solution.

7 0
3 years ago
Some strains of Mycobacterium tuberculosis are resistant to so many antibiotics that it has become known as a(n)
timama [110]

Answer:

\huge\boxed{\sf Multidrug\ resistant}

Explanation:

<u>Antibiotics:</u>

"Medicines used against bacteria are called antibiotics."

<u>Example:</u>

Rifampin, isoniazid.

Mycobacterium Tuberculosis is a bacteria.

However, some of its strains are resistant to antibiotics and thus is classified as multidrug resistant (MDR resistant)

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>

3 0
2 years ago
Explain how organisms contribute to the<br> creation of soil.
11Alexandr11 [23.1K]
When organisms die they release the nutrients back to the soil
3 0
2 years ago
Read 2 more answers
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