Killed vaccines work by stimulating
A. an antibody response.
B. phagocytic activity.
C. the cell-mediated immune response.
D. cytotoxic T cells.
E. lymphocyte proliferation.
Answer: A
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A cell that lacks sulfite oxidase but can still oxidize sulfur for energy could be identified by
A) adenosine phosphosulfate reductase coupled with substrate-level phosphorylation. B) electrons being transferred to cytochrome c prior to shuttling them into the electron transport chain. C) identifying an alternative quinone, flavoprotein, or cytochrome. D) quantifying the release of sulfate byproduct.
In what tissues can adult stem cells be found?
A) Stem cells are found only in embryonic tissues. B) Adult stem cells can be found in bone marrow and the liver. C) Stem cells can be found in any tissue that reproduces. D) Adult stem cells are found in hair and fingernail tissues.
Following the citric acid cycle but before the electron transport chain and oxidative phosphorylation, how much potential energy has been transferred to the bonds of ATP (at 7.3 kcal/mol)? The bonds of NADH (at 53 kcal/mol)?
If glucose oxidation to CO2 and H2O has a G of 676 kcal/mol, what proportion has been captured? Where would you predict the balance of the free energy has gone? What will be an ideal response?
Which of the following base pairs would be targeted and repaired by a mismatch repair system?
A. A -T B. C-G C. A-G D. A-G and C-G E. A-T and C-G