Tunicates, members of one major class of the ____ lineage, have tadpolelike larvae, but their sessile adult forms are
usually encased in a leathery "tunic."
a. Petromyzontoidea
b. Placodermi
c. Cephalochordata
d. Urochordata
e. Myxinoidea
ANSWER: d
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True or false: The sequence of species that colonize a recently disturbed area through succession is unpredictable
A. true B. false
Bile is crucial for ______ digestion because of its function in _______.
A. protein, protecting the stomach lining B. fat, solubilizing glycerol:fatty acid bonds C. nucleic acids, uncoiling DNA strands D. fat, emulsification E. protein, lyophilization
A recent study of SINEs in whales and other mammals generated results that show that whales are
derived from a common ancestor with
a. pigs and camels. b. dogs and cats. c. ruminants and hippos. d. sharks and rays. e. elephants and horses.
Bacterial and archaeal ribosomes are known as ________ ribosomes, based on their sedimentation coefficient.
A. 80S B. 30S C. 70S D. 50S