Which plant structure is responsible for gas exchange?

a. stroma
b. stomata
c. thylakoid
d. grana
e. stromal lamellae


ANSWER: b

Biology & Microbiology

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Limiting nutrients in soils are generally organic compounds

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Does the average mutation rate in humans accurately describe the pattern of mutations across the genome? Select all that apply

A. No. Some sites (hotspots) are more mutable than others. B. No. Mutation rates differ between males and females. C. No. Mutation rates differ between germ cells and somatic cells. D. No. Mutations rate vary with age. E. No. Mutation rates vary with location - they are higher in some parts of the world than in others.

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Gingivitis occurs when tooth decay causes inflammation of the enamel and pulp of the tooth

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At the end of meiosis I, the two cells are both diploid. If false, please explain why.

a. true b. false

Biology & Microbiology