Which term best describes the nitrogenous base adenine plus the sugar ribose?
A) adenine
B) adenosine
C) adenosine diphosphate
D) adenosine triphosphate
E) C followed by A or B
B) adenosine
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What is true of most deciduous trees in the temperate zone?
a. they spend all of their energy on reproduction b. growth and reproduction occur simultaneously c. they only produce one or two offspring annually d. they produce thousands of seeds for one or two years e. they only begin to breed after reaching adulthood
An active hunter on the coral reef is a(n)
a. sponge. b. cnidarian. c. giant clam. d. octopus. e. crinoid.
Respond to statements 126–129 with reference to the four glands
or structures of the mammalian gastrointestinal tract listed below. a. salivary glands b. stomach mucosa c. intestinal mucosa d. pancreas M 126. The enzyme pepsin is produced there. M 127. The enzyme carboxypeptidase is produced there. D 128. The fat-digesting enzyme, lipase, is formed there. D 129. The peptide-digesting enzyme, aminopeptidase, is produced there.
DNA polymerase can only add new nucleotides to the old 3' DNA end.
Answer the following statement true (T) or false (F)