The ultimate source of all energy in a terrestrial ecosystem is ____
a. the organic matter in all the organisms of the ecosystem
b. electrons from water molecules
c. sunlight
d. ATP
e. inorganic mineral ions in the soil
ANSWER: c
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A description of a flowering plant's ____ would include its soil, water, light, and pollinator requirements
a. habitat b. community c. ecosystem d. niche e. living requirements
How do A-B toxins function?
A) The B domain binds to a target cell receptor, while the A domain has a specific function. B) The B domain acts as a neurotoxin, while the A domain acts as a cytotoxin. C) They bind to the membrane of the host cell, creating a pore. D) The A domain binds to a target cell receptor, while the B domain has a specific function.
One procedure that has greatly enhanced prenatal screening is ________
A) GWAS B) fetal blood sampling C) RNA-seq D) chorionic villus sampling
Which physiological group of bacteria is a subset of the other?
a. Acetic acid bacteria are a subset of acetogens. b. Acetogens are a subset of acetic acid bacteria. c. Methylotrophs are a subset of methanotrophs. d. Methanotrophs are a subset of methylotrophs.