1) in the near future, the human population is predicted to involve
a. a worldwide decrease in population growth due to limited resources.
b. an increase in population growth in all countries in the world.
c. a decrease in growth in most, but not all, more-developed countries and continued
growth in most less-developed countries.
d. a continuation of human population growth at the same pace as in the previous
century.
2) which statement about the nucleus is incorrect?
a. the nucleus contains the genetic material of the cell.
b. the nucleus contains the information that ribosomes use to carry out protein
synthesis.
c. the nucleus contains the instructions for copying itself.
d. the nucleus contains the information that ribosomes use to carry out cellular
respiration.
3) in plasmodium, sexual reproduction occurs in the _________, while asexual
reproduction occurs in ________.
a. mosquito; humans
b. humans; mosquitoes
c. tsetse fly; humans
d. deer tick; deer
4) consider the consequences of a harmless prey that evolves toward mimicry of a
model that has an antipredator defense (batesian mimicry). what happens to the
effectiveness of this defense as more and more prey in the population are harmless
mimics? then consider what happens when a species with bad taste evolves to resemble
a model that stings (mullerian mimicry).
a. the number of mullerian mimics is limited because they dilute the protection afforded
by the warning color pattern, but the addition of more batesian mimics only strengthens
the protective mimicry complex.
b. the increase number of batesian mimics dilutes or weakens the protection afforded by
the warning color pattern, but the addition of more mullerian mimics only strengthens
the protective mimicry complex.
c. the number of both batesian and mullerian mimics is limited because both dilute the
protection afforded by the warning color pattern.
d. the number of both batesian and mullerian mimics is unlimited because they both
reinforce the protection afforded by the warning color pattern.
5) an example of a pheromone in humans is
a. testosterone.
b. a chemical released by males that reduces premenstrual tension in women.
c. the mother’s milk that transfers immunity to the infant.
d. saliva exchanged during kissing (as a sexual stimulant).
6) a saturated fat
a. is solid at room temperature.
b. has fatty acids with no double bonds between the carbon atoms.
c. is of animal origin.
d. all of the choices are correct.
7) which of the following statements about photoreceptors is not true?
a. image-forming eyes are found only in vertebrates.
b. photoreceptors differ in complexity in different kinds of animals.
c. eyespots in planaria allow the direction of light to be determined.
d. the simplest photoreceptors only recognize the presence and intensity of light.
e. a compound eye as seen in insects has many different visual units, each containing a
lens.
8) which of the following characteristics or actions are associated with a steroid
hormone?
a. cyclic amp
b. the second messenger
c. production of new proteins
d. activation of proteins present in an inactive form
e. binding of a protein to a surface receptor on the plasma membrane
9) why would an organism utilize alcohol fermentation if it is wasteful of the energy in
food molecules and poses a threat of death due to high levels of toxic alcohol?
a. the organism can survive short spells of anaerobic conditions and maintain growth
and reproduction.
b. if glucose levels are not high, there may be time to disperse the alcohol “waste.”
c. fermentation can provide a rapid burst of atp since it does not have to go through the
full breakdown cycle.
d. all of the choices are advantages.
e. none of the choices is an advantage; anaerobes only survive where aerobes cannot.
10) during oxidation nad+ will accept ______ but only _______.
a. 2 electrons, 1 hydrogen
b. 1 electron, 2 hydrogens
c. 2 electrons, 2 hydrogens
d. 1 electron, 1 hydrogen
11) incoming solar radiation affects
a. the rise and fall of air masses.
b. evaporation or precipitation of moisture.
c. the seasons.
d. all of these choices are directly or indirectly affected by solar radiation.
e. none of these are correct.
12) a ruminant is
a. a carnivore with no extra digestive specializations.
b. a carnivore with extra stomach separations.
c. an omnivore with extra stomach separations.
d. a herbivore with no extra digestive specializations.
e. a herbivore with extra stomach separations.
incorrect
13) which of the following series of events is associated with the formation of cancer?
a. the proto-oncogenes mutate and become oncogenes which are continuously active.
there is also an associated loss of tumor suppressor gene activity allowing uncontrolled
growth of cells.
b. the oncogenes mutate and become proto-oncogenes which are continuously active.
there is also an associated loss of tumor suppressor gene activity allowing uncontrolled
growth of cells.
c. the proto-oncogenes mutate and become oncogenes which stop functioning
altogether. there is also an associated increase in the tumor suppressor gene activity
allowing uncontrolled growth of cells.
d. the oncogenes mutate and become proto-oncogenes which stop functioning
altogether. there is also an associated increase in the tumor suppressor gene activity
allowing uncontrolled growth of cells.
14) an axillary bud may produce
a. nothing-it is shed with the leaf.
b. a lateral branch or a flower.
c. wood and lateral branches.
d. inhibitors of growth.