Cells Flashcards

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1
Q

What is the function of mitochondria?

A

to transfer energy by (aerobic) respiration or from glucose

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2
Q

What type of microscope is needed to see ribosomes and mitochondria?

A

electron (microscope)

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3
Q

Explain why the mean rate of water uptake is higher on a hot day than on a cold day.

A

(on hot day) more water lost more transpiration or more evaporation
so more water taken up (by roots) to replace (water) loss (from leaves)

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4
Q

Give three advantages of using stem cells from embryos instead of from adult bone marrow.

A

can develop into most other types of cell
each cell divides every 30 minutes
low chance of rejection by the patient’s immune system

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5
Q

Give three advantages of using stem cells from adult bone marrow instead of from embryos.

A

cheaper, can collect many (stem) cells, safe

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6
Q

Describe the process of cell division by mitosis

A

chromosomes and subcellular structures duplicate, cytoplasm splits, identical (daughter) cells formed

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7
Q

Dead plants decay faster in soil containing earthworms compared with soil containing no earthworms. Explain why.

A

more oxygen (in soil with earthworms), more (aerobic) respiration, bacteria decompose

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