Depending on their environments, animals may gain water (select all correct choices):
A. by drinking.
B. from food.
C. during cellular respiration.
D. through their lungs.
E. during excretion.
A,B,C
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Organisms that grow very slowly, are non-curable, are present in very small numbers, or are mixed with a number of other bacteria may still be identified using
A. Southern blotting. B. replica plating. C. PCR. D. gas chromatography of fatty acids.
Some evidence that algae are the closest relative to plants is that they both:
a. Have chloroplasts b. Contain chlorophyll a c. Have cellulose rich cell walls d. Use starch as a nutrient reserve e. All are correct
Which event occurs during the luteal phase of the menstrual cycle?
A. The corpus luteum forms. B. A zona pellucida forms around the oocyte. C. An oocyte completes meiosis I. D. Estrogen levels increase. E. Testosterone levels increase.
Oak trees grow slowly and put a lot of resources into the trunk, bark, and roots. Seeds are relatively heavy. In the plant kingdom, oaks might be considered:
A) K-selected. B) opportunistic. C) density independent. D) r-selected.