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1) the concentration of protein in the blood is higher in post-glomerular blood as
compared with that in arterial blood because
a. protein is digested and then concentrated in glomerular (bowman's) capsule.
b. the kidney manufactures and then stores protein in the glomerulus.
c. reabsorption of protein occurs.
d. water passes into the capsule, but protein molecules are too large to move into the
capsule and are concentrated in the blood.
e. water concentration increases and protein concentrations decrease.
2) a pond represents a(n) _______ while the minnows represent a(n) ______.
a. population; community
b. population; ecosystem
c. ecosystem; population
d. community; population
e. ecosystem; community
3) the process in which natural selection favors the continual development of prezygotic
isolating mechanisms is called
a. disruptive selection.
b. sympatric speciation.
c. mutation.
d. reinforcement.
4) a major disadvantage of the evolutionary species concept is that it
a. relies primarily on reproductive isolation to identify species.
b. applies to both sexually and asexually reproducing species.
c. uses morphological traits to distinguish species.
d. is the same as the classic biological species concept.
5) an individual who works in construction and is exposed to years of loud noises,
below 75 decibels,will most likely develop a decease in hearing function. the structures
that are damaged are the ______________.
a. stereocilia of the spiral organ
b. organ of corti
c. auditory canal
d. tympanic membrane
e. round window
6) in nearsightedness, light rays are brought into focus
a. in front of the retina.
b. in back of the retina.
c. on the retina.
d. on the hair cells of the ampulla.
e. unevenly across the retina.
7) what is the main reason that the oceans play a larger role in determining the
temperature of air masses?
a. the ocean holds it's temperature longer than land masses.
b. the ocean currents are constantly moving while land masses are stationary.
c. the ocean is flat while land masses have topographical features to break up air
patterns.
d. the ocean currents move in a circular pattern while land masses are stationary.
8) the population growth rate is negative when
a. birthrate is greater than death rate.
b. death rate is greater than birth rate.
c. all couples are married but average fewer than two children apiece.
d. a country becomes poorer, because it is related to economic growth.
e. better health care reduces the death rate and increases survivorship of newborns.
9) which statement most accurately describes how we interpret the sensation of taste?
a. the taste buds contain microvilli that project into the taste pore. the molecules bind to
receptor proteins located on the microvilli which send a nerve impulse to the brain for
interpretation.
b. the taste buds contain receptor proteins that are located on the tongue. the molecules
bind to receptor proteins which send a nerve impulse to the brain for interpretation.
c. the taste buds contain microvilli that project into the taste pore. the molecules bind to
receptor proteins located on the microvilli which send a nerve impulse to the spinal
cord for interpretation.
d. the tongue moves molecules into the mouth so that the sinuses can detect the various
scents. this information is then sent to the brain for interpretation.
e. none of these describe how we interpret taste.
10) consider the following food chain: hawk - rabbit - clover. each species will contain
a different amount of calories in its body (clover: 10 calories, rabbit: 500 and hawk:
1200). each species has a different daily caloric requirement (clover: sunlight, rabbit:
100 calories, hawk: 300).
how many rabbits, per day,does it take to support the hawk?
a. approximately 6
b. about 1/2 a rabbit
c. 2 whole rabbits
d. 12 rabbits
11) which of the following plant hormones breaks dormancy in seeds and buds when
applied to the plant?
a. abscisic acid
b. auxin
c. cytokinin
d. ethylene
e. gibberellins
