During platelet plug formation,
A. platelets stick to the exposed collagen fibers of injured vessels.
B. activated platelets release fibrinogen.
C. thrombin is released from endothelial cells.
D. vitamin K production increases.
E. platelets multiply.
A
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Which of the following choices describes three general functions cells must perform?
A. Take up oxygen, prevent water entry, undergo mitosis frequently B. Respond to all hormones, maintain a waterproof barrier, give rise to gametes C. Grow until dividing, store complex carbohydrates, generate antibodies D. Maintain shape, obtain nutrients, and dispose of wastes
What type of proteins are present in gap junctions that form water-filled channels between neurons?
A. Connexins B. Myelin C. Cell adhesion molecules (CAMs) D. Terminal boutons
Relate puberty and increased testosterone and estrogen production to the relative heights of men and women
What will be an ideal response?
Decreased ADH levels results in a urine high in
A. potassium. B. water content. C. glucose content. D. bicarbonate content. E. hydrogen ions.