Members of the ____ lineage are highly active, have a closed circulatory system, and a high oxygen requirement
a. Cephalopoda
b. Polyplacophora
c. Platyhelminthes
d. Gastropoda
e. Scaphopoda
ANSWER: a
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Large ears is a rare trait in a mainland population of mice. A female mice homozygous for very large ears arrives at an island that already contains mice after sneaking onto a boat. This will lead to a population with a higher incidence of big ears than the mainland population because of ____
A. increased mutation. B. a bottleneck effect. C. genetic drift. D. natural selection. E. gene flow.
Which of the following would not be synthesized on the endoplasmic reticulum?
A. cytoskeletal proteins B. lipids C. pump proteins D. lysosomal proteins
The fossil record is a testament to extinct fauna no longer present on Earth. Certain areas of the planet have always had high species diversity (evidence from fossils and catalogs of current species diversity)
What two processes likely contribute to the patterns of animal diversity we see through time? A. evolutionary innovation and the appearance of new land masses over time B. evolutionary innovation and changes in atmospheric oxygen C. evolutionary innovation and extinction events (both local and global) D. evolutionary innovation and volcanic eruptions
A component of bacteria that are often used in biotechnology are
a. operons. b. introns. c. exons. d. polypeptides. e. plasmids.