Hemocyanin:a

combines irreversibly with oxygen for transport within the body of various organisms.
b. is bright red in color when combined with oxygen.
c. has an iron-porphyrin group that is responsible for oxygen transport.
d. is a respiratory pigment found in the blood of some invertebrate and vertebrate species.
e. is a respiratory pigment that is colorless when deoxygenated.


E

Biology & Microbiology

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In general, the cold-dwelling thaumarchaeotes are evolving more slowly than the hyperthermophilic crenarchaeotes

Indicate whether the statement is true or false.

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Primary spermatocytes develop from the division of

A) male gametes. B) secondary spermatocytes. C) spermatogonia. D) somatic cells.

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The accompanying figure represents a:


a. fairly simple food web.
b. fairly simple food chain.
c. pyramid of biomass.
d. pyramid of energy.
e. pyramid of numbers.

Biology & Microbiology

pH 4 is ______________x more acidic than pH 7.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology