Which of the following occur in telophase I of meiosis?
a. nuclear envelope formation
b. pairing of homologues
c. formation of a bipolar spindle
d. crossing over
e. condensation of chromosomes
ANSWER: a
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Four of the five answers listed below are end-products of digestion ready for intestinal absorption. Select the exception
a. monoglyceride b. monosaccharides c. disaccharides d. amino acids e. free fatty acids
Clams, oysters, and scallops are called bivalves because they have
a. a pair of eyes. b. bilateral symmetry. c. a double foot region. d. a shell made up of two halves. e. two sexes.
How many amino acids are considered to be
essential because the human body cannot synthesize them? a. 2 b. 5 c. 8 d. 10 e. 12
When bass were removed from a stream, an algal bloom occurred. This is an example of
A) top-down control. B) bottom-up control. C) the null model. D) apparent competition.