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KatRina [158]
3 years ago
7

What do viruses need to reproduce

Biology
2 answers:
bija089 [108]3 years ago
8 0

Answer:

host cell

Explanation:

they cant do nothing without a host

bezimeni [28]3 years ago
6 0
A host cell is the answer.
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Rabbit 8-12 years
Fox 5 years
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Functions of the spleen include all of those below except ________. A. removal of old or defective blood cells from the blood B.
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Forming crypts that trap bacteria
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3 years ago
4. If index of refraction 1 is 1.5, index of refraction 2 is 2.0, and the angle of incidence is 45 degrees, what is the angle of
motikmotik

Answer: The angle of refraction is 32°

Explanation:

By snell law, we have that:

n₁*sen(θ₁) = n₂*sen(θ₂)

Where n₁ = 1.5

n₂ = 2.0

θ₁ = 45°.

then we want to find the angle of refraction.

1.5*sin(45°) = 2*sin(x)

x = Asin(1.5*sin(45°)/2) = 32°

7 0
3 years ago
a man is twice as old as his son.Five years ago the ratio of their ages was 9:4.Find the sum of their ages​
elena-s [515]

Answer:

75years

Explanation:

Let the Father's age be represented by 2x

Let the Son's age be represented by x

Five years ago;

Man's age will be = 2x - 5

Son's age will be = x - 5

If the ratio of their ages five years ago was 9:4, then;

2x - 5/x-5 = 9/4

4(2x - 5) = 9(x - 5)

8x - 20 = 9x - 45

- Collect like terms

-20 + 45 = 9x - 8x

25 = x

Hence, the son's age = 25 years

If x = 25, the father's age (2x) will be 2 × 25 = 50years

The sum of their ages will be = 25years + 50years = 75years

6 0
3 years ago
How is the structure of a nerve cell different from that of a red blood cell? Why do cells differ in shape and size? PLZ HELP!!.
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Answer:

Blood cells are a lot smaller than nerve cells and have a disc-shaped structure, both great traits for moving quickly through small spaces. Their disc shape also provides them with a big surface where lots of oxygen can enter the cell.

hope it helps

3 0
3 years ago
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