1) the rate of product formation by an enzyme-catalyzed reaction would be increased by
a) adding more substrate molecules.
b) adding more product molecules.
c) reducing the number of enzymes.
d) reducing the number of substrate molecules.
2) osmotic pressure resulting from presence of plasma proteins in blood is called
________ pressure.
a) oncotic
b) colloid osmotic
c) hydrostatic
d) oncotic and colloid osmotic
e) colloid osmotic and hydrostatic
3) g cells of the stomach secrete
a) cholecystokinin.
b) secretin.
c) gastrin.
d) enterokinase.
e) pepsin.
4) a person has a total blood volume of 5 l. of this total, 4 liters is contained in the
systemic circulation and 1 l in the pulmonary circulation. if the person has a cardiac
output of 5 l/min:
a.how long will it take for a drop of blood leaving the left ventricle to return to the
heart?
b.how long will it take a drop of blood to go from the right ventricle to the left
ventricle?
5) the alpha cells of the pancreas produce
a) insulin.
b) glucagon.
c) renin.
d) cortisol.
e) digestive enzymes.
6) the most important polar molecule is ________ because it is practically a universal
solvent.
a) water
b) bicarbonate
c) sodium chloride
d) magnesium sulfate
e) nucleic acid
7) functions of epithelia include all of the following except
a) providing physical protection.
b) controlling permeability.
c) producing specialized secretions.
d) storing energy reserves.
e) movement.
8) a damaged neuron has a better chance of survival and repair if the ________ is/are
undamaged.
a) cell body
b) axon
c) dendrites
d) schwann cells
e) axon and dendrites
9) detailed understanding of the cellular basis of signaling in the nervous system has led
to good understanding of consciousness, intelligence, and emotion.
a) true
b) false
10) at an intercalated disc,
a) the cell membranes of two cardiac muscle fibers are completely separated by a
synapse.
b) the myofibrils are loosely attached to the membrane of the disc.
c) two cardiac muscle cells are connected by gap junctions.
d) t-tubules unite the membranes of the adjoining cells.
e) all of the answers are correct.
11) juxtaglomerular cells in the nephron secrete
a) angiotensinogen.
b) angiotensin i.
c) aldosterone.
d) renin.
e) angiotensin converting enzyme.
12) match the disease with the description.
a. addison’s disease
b. cushing’s disease
c. graves’ disease
d. paget’s disease
may result from a pituitary tumor
13) if an animal cell lacked centrioles, it would not be able to
a) maintain its balance.
b) synthesize proteins.
c) produce dna.
d) metabolize sugars.
e) undergo nuclear division.
14) eric has had trouble sleeping the last two nights and is currently experiencing heart
burn which he attributes to the stress of being in finals week and eating too much pizza.
his lab partner in physiology class tells him he should take some diphenhydramine
(benadryl) before he goes to bed because that will help him sleep and his upset
stomach. is this a good suggestion or not.
15) diuretics cause the kidneys to produce large amounts of urine. unfortunately, they
can also cause the loss of large quantities of k+ in the urine. what effect might
prolonged use of diuretics have on nerve or muscle cells?
16) the walls of the ________ separate the two extracellular fluid compartments.
17) identify the virus associated with some types of cervical cancer. how is this virus
acquired? is it accurate to consider cervical cancer to be contagious? explain.
18) the primary products of protein digestion are ________, ________, and ________.
19) atropine inhibits parasympathetic activity. discuss the effects of atropine on the
heart and describe common expected side effects.
20) sydney student is trying to memorize chemical structures of every compound his
professor has indicated are important to the human body. explain to him that an easier
way is to memorize a few rules of chemical bonding and then figure out the structure of
the important compounds, especially the simpler compounds.
21) what are the primary components of a cardiovascular system? what
diffusion-related problem is solved by having a cardiovascular system?
22) how would a spirometer tracing be different in a person with a collapsed lung?
why? what must occur to restore the respiratory function to normal?
23) do you know what kinds of cell markers your red blood cells have? do you know
your own blood type? how are these two pieces of information related?