If a blood buffer is absent, which function of the blood would be compromised?
A. Transport of ions
B. Clot formation
C. Regulation of pH
D. Protection against foreign substances
E. Maintenance of body temperature
Answer: C
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When myosin moves along the actin, it goes through cycles of binding and releasing (duty cycle). How does myosin keep from losing its place on the actin when it releases?
A) The time of the duty cycle is large (.99) so that it is only unattached a short time. B) The myosin is still attracted to the actin by weak electrostatic forces that prevent it from moving too far away during release. C) The myosin is attached to the actin by another protein that it uses as a safety line to prevent it from slipping too far back. D) The myosin is arranged in dimers so that when one releases, the other is bound.
An ion widely important in intracellular signaling is
A) calcium. B) cobalt. C) sodium. D) chloride. E) potassium.
Rat and mouse pups may be called ________________, neonates who are hairless
Fill in the blank(s) with correct word
The stages that appear during spermatogenesis area: spermatidb: primary spermatocytec: spermatogoniumd: spermatozoone: secondary spermatocyteWhat is the correct order of appearance of these stages?
A. d, b, c, e, a B. b, e, c, d, a C. a, c, b, e, d D. c, b, e, a, d E. c, e, d, a, b