The MOST stable atoms and thus those that are typically nonreactive are the atoms that have _______.
A) full inner shells
B) equal numbers of electrons an neutrons
C) all covalent bonds
D) full outer shells
E) equal numbers of electrons and protons
Ans: D) full outer shells
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If a new human metabolic disease is found that only allows electrons to be used from NADH and not
FADH2, what is a probable explanation for the cause of the disease?
a. a defect in assembly protein genes for complex II of the electron transfer system b. enzyme defects in glycolysis and the citric acid cycle c. a deficient amount of cytochrome c and coenzyme Q d. improper regulation of phosphofructokinase e. inability of oxygen to act as a final electron acceptor
Which of the following cells is responsible for rejection of transplanted organs?
a. NK cells b. cytotoxic T cells c. helper T cells d. memory cytotoxic T cells
Ethanol can be easily produced from ____
a. photosynthetic pigments b. crystalline cellulose c. root systems of plants d. plant sugars e. stems of plants
________ is a predator that bores a hole through the outer membrane of its Gram-negative bacterial prey and then reproduces in the periplasm.
A. Mycococcus B. Bdellovibrio C. Vampirococcus D. Syntrophobacter