Ovaries, the female gonads, produce eggs and secrete the hormones __________ and __________. Fill in the blank(s) with the appropriate word(s)


ANSWER: progesterone; estrogens

Biology & Microbiology

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Endotoxins are released in large amounts only when cells lyse

Indicate whether the statement is true or false.

Biology & Microbiology

Chromosomes move toward the poles during 

A. anaphase II. B. metaphase II. C. prophase II. D. telophase II.

Biology & Microbiology

The part of an enzyme to which a substrate binds is called the ________.

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

Biology & Microbiology

Two bird species have different mating calls, occupy different habitats in nature, and when they hybridize, the hybrids are infertile. Which isolating mechanisms maintain these species?

A. ecological isolation, mechanical isolation, hybrid sterility B. mechanical isolation, hybrid sterility, geographical isolation C. ecological isolation, behavioral isolation, and hybrid sterility D. geographical isolation, temporal isolation, behavioral isolation

Biology & Microbiology