One surface of an epithelium faces the environment or a body fluid. The opposite surface is glued to an underlying tissue by ____.

A) microvilli
B) ducts
C) the basement membrane
D) keratinized cells
E) stratified epithelium

Hemophilia is an inherited clotting disorder found most often in males.

Why is body temperature sometimes reduced during heart surgery?

A) To slow respiration
B) To increase heart rate
C) To decrease heart rate
D) To increase the oxygen content of blood

The product of the Calvin cycle that is of greatest practical importance to the plant is carbohydrate.

The ________ are distributed throughout the dermal papillae and are involved in ________ touch.

A) Merkel disks; very deep
B) Pacinian corpuscles; very light
C) Muscle spindles; fine proprioceptive
D) Golgi tendon organs; limited awareness
E) Meissner corpuscles; two-point discrimination

While eating a container of yogurt, you have to leave, so you store the yogurt in the refrigerator. A day later you return and find the surface of the yogurt is no longer smooth but has broken into several liquified products. You correctly guess that enzymes from your saliva, via the spoon, have continued digesting the yogurt in your absence. What will happen over time?

A) Nothing, the reaction has stopped because the amount of saliva is small and you would have to add more saliva to continue the degradation.
B) The reaction will continue indefinitely since the enzyme is not consumed by the reaction.
C) The reaction will continue until half is digested and then stop because the reaction between substrate and product will be balanced.
D) The reaction has stopped because the yogurt has denatured the enzyme.
E) As long as the enzyme is not denatured by environmental conditions, the reaction will continue until all of the substrate is used up.