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2 years ago

Cells can die or become damaged. Which part of cell theory is used to replace dead or damaged cells?

Biology

1 answer:

Ahat [919]2 years ago

5 0

Answer:

Explanation:

cells divide by mitosis hope this helps

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A sand storage tank used by the highway department for winter storms is leaking. As the sand leaks out, it forms a conical pile.

harina [27]

Answer:

Rate of change of volume of the pile $= 54\pi$

Explanation:

Given -

Rate of increase of the base of the pile $= 0.75$ inches per minute

Height of the pile $= 2 *$ the radius of the base

Let "h" be the height of the pile and "r" be the radius of the base.

Then $h = 2* r$

Radius "r" $= 6$ inches

Rate of change of radius i.e

$\frac{dr}{dt} = 0.75$

Volume of conical pile

$\frac{\pi }{3} * r^2 * h\\= \frac{\pi }{3} * r^2 * 2 * r\\= \frac{\pi }{3} *2* r^3$

Change in volume of conical pile

$\frac{dV}{dt} = \frac{dr}{dt} * \frac{6* \pi * r^2 }{3}$

Substituting the value of rate of change of radius, we get -

$\frac{dV}{dt} = 2 * \pi * (6^2) * (0.75)\\\frac{dV}{dt} = 54 \pi$

Rate of change of volume of the pile $= 54\pi$

8 0

3 years ago

What are TWO factors that could affect the rate of diffusion?

Jet001 [13]

Answer:

Diffusion occurs when particles move from an area of high concentration to an area of low concentration. The factors affecting rate of diffusion are: concentration, temperature, mass of the particle and properties of the solvent in which diffusion occurs. Faster movement equals faster diffusion.

Explanation:

8 0

3 years ago

If you wanted to observe a living organism-an amoeba, for example-which type of microscope would you use?

yKpoI14uk [10]

Answer:

compound light microscope

Explanation:

an amoeba is a microscopic unicellular protist

7 0

3 years ago

- Petroleum

maw [93]

Answer:

Fires, volcanoes, and weathering

3 0

3 years ago

If a haploid cell has 50 chromosomes how much would the sex cell of the organism have?

Hitman42 [59]

25 !!!!!!!!!!!!!!!!!!!!

6 0

2 years ago

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