Which of the following types of molecules are the most diverse in terms of structure and types of roles
in cells?
a. proteins
b. lipids
c. nucleic acids
d. carbohydrates
e. amino acids
A
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The pH of unpolluted rainwater is closest to:
a. 2 b. 4 c. 6 d. 8 e. 10
Hermaphrodites ________
A) possess both male and female reproductive systems B) have the gonads of one sex but the external appearance of the other C) usually fertilize themselves D) have abnormal reproductive systems
Anaphase of mitosis occurs when:
a) the chromatids begin to separate from the metaphase plate. b) the chromosomes line up on the 'equator'of the cell. c) the cell enters interphase. d) the chromatin coils into thicker, visible chromatids. e) the nuclear envelope first breaks down.
Bacteria typically use binary fission, but under special circumstances sexual reproduction is possible via horizontal gene transfer.
Answer the following statement true (T) or false (F)