Prions
a. are more complex than viruses
b. have large DNA genomes
c. cause neurodegenerative disorders in mammals
d. infect plant cells
e. encode their own polymerases for nucleic acid replication
C
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Suppose you found several Drosophila mutants that possessed additional legs growing out of their head segments. The probable mutation would be found in _____
A) segment-polarity genes B) gap genes C) pair-rule genes D) homeotic genes
The term ‘coral bleaching' refers to:
a. the loss of a protistan symbiont by a reef-building coral b. the growth of new cnidarians within a reef c. the color change in coral reefs as they become mature d. an invasion of a coral reef by a colorless protistan as opposed to a green, photosynthetic one e. the loss of the calcium carbonate skeleton of cnidarian polyps
TRUE Lysosomes contain enzymes that are so destructive that, if the enzymes were released from these organelles, they would damage or kill the cell that contains them.
a. true b. false
The conclusion that early hominins were bipedal is based in part on examination of four of the following. Which one is the exception?
A. Their S-shaped backbone B. The position of the opening for the spinal cord in the skull C. Footprints D. Their jaw shape E. Length of the femur