What percent of plasma is water?
a. 10 percent
b. 27 percent
c. 55 percent
d. 77 percent
e. 92 percent
E
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The most important predator in salt marshes at low tide are: a. crabs
b. birds. c. nematodes. d. marsh snails.
Answer the following statements true (T) or false (F)
1.The proteins needed to form blood clots are known as clotting factors. 2.The lymphatic system collects fluid that has leaked from blood capillaries, removes bacteria, and returns the cleansed fluid to the blood. 3.If a smoker deliberately held their respiration rate at the same level as a nonsmoker, the slowed diffusion of gas due to smoking-related damage could lead to decreased blood pH. 4.The interaction of blood pH, medulla, and carbon dioxide is an example of homeostasis. 5.The medulla has receptors that monitor H+ concentrations in the cerebrospinal fluid.
Most of the NADH that delivers electrons to the electron transport chain comes from _____.
a. glycolysis b. the movement of hydrogen ions across the inner mitochondrial membrane c. the cytosol d. the Citric Acid cycle e. fermentation
Oxytocin from the mother's pituitary gland targets what organ to begin contractions?
A) oviduct B) vagina C) hypothalamus D) uterus E) fimbriae