Natural killer cells are capable of which of the
following?
a. stimulating T cell memory
b. killing bacteria in the interstitial fluid
c. destroying body cells lacking MHC
d. shutting down adaptive immune responses
e. destroying parasites in the blood stream
C
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What structures solve the end replication problem for linear chromosomes?
A. telomerases B. centromeres C. origins of replication D. telomeres E. euchromatin
During which Period was there lush vegetation, the age of the dinosaurs and the break up of Pangea?
a. Cambrian b. Mesozoic c. Paleozoic d. Jurassic e. Cretaceous
Considering that species diversity in estuaries is limited by constant changes in salinity, temperature, and water movement, where, vertically, in an estuary would one expect to find the greatest species diversity? The least species diversity?
What will be an ideal response?
Sucrose is composed of
a. two molecules of fructose. b. two molecules of glucose. c. a molecule of fructose and a molecule of glucose. d. a molecule of fructose and a molecule of galactose. e. two molecules of galactose