Ques:Q: Methyl groups are found within what? Choices: - rna acids - DNA molecules - peptide chains - amino acids A:

Ans:amino acids
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Ques:Q: A fully developed placenta is made up of a large mass of what? Choices: - brain tissues - plant cells - estrogen hormones - blood vessels A:

Ans:blood vessels
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Ques:Q: What step, involving placement of a substance on the stigma, precedes fertilization? Choices: - mitosis - spawning - hibernation - pollination A:

Ans:pollination
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Ques:Q: What is the term for dry climate regions at higher altitudes that have short grasses and low bushes? Choices: - deserts - fringes - prairie - steppes A:

Ans:
steppes
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