The information stored in the DNA sequences is used directly as a template to make ___________
(a) lipids.
(b) RNA.
(c) polypeptides.
(d) carbohydrates.
(b)
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Match the following items with the correct phrases.
_______1. When two microorganisms occupying the same environmental niche have absolutely no effect upon each other, it is known as ____________________. _______2. Bacterial vaginosis is an example of ____________________. _______3. ____________________ is a symbiotic relationship of benefit to one of the symbionts, but neither beneficial nor harmful to the other. _______4. ____________________ is a symbiotic relationship of benefit to one of the symbionts, and detrimental to the other. _______5. A lichen is a classic example of ____________________. a. commensalism b. mutualism c. neutralism d. parasitism e. synergism
The micropyle is ____
a. the mature male gametophyte b. the inner seed coat c. a small opening at one end of an ovule d. a passageway through the style for sperm e. the eight-cell stage of a plant embryo
Evolution by natural selection was conceived and written about in the 1800s by ________
A) Alfred Russel Wallace B) Charles Darwin C) W. C. Wells D) Patrick Matthew E) All of the above
Which sequence accurately describes the flow of electrons in photosynthesis?
A) Photosystem I ? photosystem II ? H2O ? NADP B) H2O ? photosystem II ? photosystem I ? NADP C) Photosystem I ? photosystem II ? NADP ? H2O D) Photosystem II ? photosystem I ? NADP ? H2O E) H2O ? photosystem I ? photosystem II ? NADP