Science class questions? (7th Grade)?

Question

Okay I'm in 6th grade but i have higher level science and I need help.

Its for a quiz so I need to know a lot about cells. Also I have been absent for a week so that doesn't really help me.

Here is what I need help with:

In one minute, how many cells in your body are made?

How long do cells live?

How big is a red blood cell?

How big is a rhino-virus?

What are the main jobs of the cytoplasm and endoplasmic reticulum?

What does the central vacuole do?

If you guys could answer as many of these as you can that would help me a lot.

Thanks

6u3r1t4

Answer 1

the vacuole holds water, i don't know if it's any different from the central vacuole...