Which of the following infectious agents is least likely to be damaged by UV exposure?
bacteria
viruses
fungi
protozoa
prions
prions
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The fact that the live birth rate from older mothers using oocytes in IVF from much younger women is much higher than from older mothers using their own oocytes indicates that the age effects on reproductive success reflect
A) the oocyte source. B) the uterus source. C) the age of the father. D) the sperm count.
Fibers extending from cell pole to cell pole are called the
A. cleavage furrow. B. cell plate. C. cell equator. D. spindle.
A partly enclosed body of water where fresh water from a river or rivers mixes with seawater is referred to as a(n) ____.
A. upper littoral B. midlittoral C. lower littoral D. estuary E. upwellings
The plastids of kelps and other brown algae arose through secondary endosymbiosis. What modern organisms are most closely related to the type of cell that eventually became these plastids?
A. Chlamydomonas (a single-celled green alga) B. coccolithophorids C. cyanobacteria D. Trypanosoma (a kinetoplastid) E. dinoflagellates