An organism is found to be almost unchanged from its 200 million year old fossil. This is an example of ____
a. stasis
b. coevolution
c. mass extinction
d. adaptive radiation
e. idealized design
ANSWER: a
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Viruses contain DNA or RNA, but lack genes necessary for metabolism and reproduction. Why are viruses not considered to be alive?
A. Viruses are unable to reproduce independently of a host. B. Viruses do not have the ability to evolve in their environment. C. Viruses do not contain internal organelles. D. Viruses do not contain nucleic acids.
Photosystem I initiates the electron transport chain that produces
A. water. B. NADPH. C. glucose. D. NADH. E. ATP.
During vesicular transport, which of the following are the correct sequences of events as a vesicle leaves the organelle?
a. Triskelion, clathron, recycles, Rab, SNARE b. Triskelion, clathrin, Rab, SNARE c. SNARE, Rab, triskelion, clathrin, recycle d. Triskelion, clathrin, recycle e. Triskelion, clathrin, SNARE, recycle
Alternative form of a gene; alleles occur at the same locus on homologous chromosomes
What will be an ideal response?