In a cyanobacterium, the reactions that produce NADPH occur in
A) the light reactions alone.
B) the Calvin cycle alone.
C) both the light reactions and the Calvin cycle.
D) neither the light reactions nor the Calvin cycle.
E) the chloroplast, but is not part of photosynthesis.
Ans: A) the light reactions alone.
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As a result of fermentation, cells produce ____
a. ADP b. NADH c. FAD d. O2 e. NAD+
If the cilia on Bob's inner ear hair cells are damaged, what can be done to improve Bob’s hearing, other than a hearing aid?
Hair cells are delicate sensors of sound, movement, and gravity. Since they are stimulated by movement of the stereocilia and kinocilium, these structures are vulnerable to damage when stimulus is too strong or sustained. A. transgenic expression of a cilia protein B. minoxidil treatment C. injection of microtubules into the cochlea D. not much – there is currently no drug that can regenerate hair cells
Keeping internal conditions within tolerable
limits is called
a. maintenance. b. anatomy. c. physiology. d. homeostasis. e. equilibrium
Cell motility is an important identifying characteristic in laboratories. What is the best way to determine whether a bacterial strain is motile?
A) Do a simple stain and observe the organisms under phase-contrast microscopy. B) Do a Gram stain and observe the organisms under bright-field microscopy. C) Stab an inoculum into a tube of semisolid medium. D) Inoculate a liquid culture with the organism.