1) based on this tree, mammals are as closely related to birds as they are to snakes.
2) transgenic plants must be approved by the food and drug administration before they
are considered safe for human consumption.
3) glycolysis is a catabolic process.
4) the humboldt current runs along the coast of south america carrying nitrogen rich
cold water northward.
5) bacteria are the group in which there is the least amount of known and the fewest
species recognized.
6) the 1840s irish potato famine was caused by a water mold parasite on potatoes.
7) starch is a protein that serves in energy storage in plant cells.
8) zero population growth will be achieved as soon as couples have only replacement
reproduction, with two children per couple.
9) a rain shadow is the region where heavy condensation precipitates out, as warm,
moist air rises and then cools on the windward side of mountain ranges.
10) the ascending tracts of the spinal cord are responsible sensory and motor functions
of the peripheral nervous system that control the skeletal muscles.
11) carbon can form covalent bonds with as many as four other atoms.
12) the famous greek philosopher aristotle could be thought of as a taxonomist since he
identified and grouped organisms.
13) which of the following protein structures is exemplified by globular proteins?
a. tertiary
b. secondary
c. primary
d. quaternary
e. all of the protein structures are exemplified by globular proteins
14) which of the following statements best describes a herbaceous dicot stem?
a. vascular bundles are arranged scattered throughout the stem which also stores water
and the products of photosynthesis.
b. vascular bundles are arranged in a ring and the cortex and pith are not
distinguishable.
c. vascular bundles are arranged in a ring which stores water and the products of
photosynthesis.
d. vascular bundles are scattered throughout the stem which is also capable of
conducting photosynthesis.
e. the stem is composed of primary and secondary tissues.
15) which of the following features is not found in a bacterial cell?
a. cell wall
b. nucleus
c. cell membrane
d. nuceloid region
e. ribosome
16) which of these statements is not true about fertilization in a fern plant?
a. an egg is produced in an archegonium.
b. a sperm is produced in an antheridium.
c. the sperm is carried by the wind to the egg.
d. the eggs and sperm are produced on the same plant.
e. eggs and sperm are produced by the gametophyte generation.
17) the problem with tissue rejection following organ transplants
a. is due to the tissues being recognized as nonself, and therefore being treated as a
foreign substance.
b. can be reduced if the organ donor is a close relative with very similar tissue proteins.
c. can be reduced by administering immunosuppressive drugs.
d. all of the choices are correct.
e. none of theseare correct.
18) which of the following systems / organs are incorrectly matched with its role in
maintaining homeostasis?
a. digestive system – provides nutrient molecules to the cells.
b. respiratory system – transports oxygen and carbon dioxide to the cells throughout the
body.
c. liver – removes excess glycogen from the blood and stores it as glucose.
d. pancreas secretes insulin when the body has an elevated blood glucose level.
e. all of the above systems / organs are correctly matched with their role in maintaining
homeostasis.
19) ____ is considered the first messenger, while ____ is called the second messenger.
a. insulin; glucagon
b. acth; cortisol
c. peptide hormone; camp
d. glucose; insulin
e. tsh; thyroxin
20) which of the following hypothesis is supported by the fact that cells of wilting
leaves produce abscisic acid, which causes guard cells to close?
a. supports both hypothesis i and ii.
b. supports only hypothesis i.
c. supports only hypothesis ii.
d. supports neither hypothesis.
21) unattached earlobes (ee or ee) are described in the textbook as dominant over
attached earlobes (ee). a couple both have unattached earlobes. both notice that one of
their parents on both sides has attached earlobes (ee). therefore, they correctly assume
that they are carriers for attached earlobes (ee). the couple proceeds to have four
children.
a. they can be certain that three will be heterozygous and one homozygous recessive.
b. if the first three are heterozygous, the fourth must be homozygous recessive.
c. the children must repeat the grandparents’ genotype (ee).
d. all children must have unattached earlobes since both parents possess the dominant
gene for it.
e. two heterozygous, one homozygous recessive and one homozygous dominant is a
likely outcome, but all heterozygous, or two, three or all four homozygous are also
possible.
22) which of the following mineralcorticoid is responsible for regulating blood volume
and pressure?
a. aldosterone
b. cortisol
c. t3
d. t4
e. calcitonin
23) which of the following organelles is found within an autotrophic, eukaryotic cell?
a. lysosomes
b. ribosomes
c. rough endoplasmic reticulum
d. chloroplast
24) which of the following would change the allele frequencies of a population?
a. dna is stable from generation to generation and does not change, so allele frequencies
do not change.
b. tall people in a population preferentially marry other tall people and do not marry
people who are short or average height.
c. a population on an island remains isolated and no one leaves or moves onto the
island.
d. all of the above would change allele frequencies of a population.
25) which substrate is missing: 6co2 + ______ + energy = c6h12o6 + 6o2
a. 6h2o
b. 4h2o
c. 4o2
d. glucose
26) if a cell contains 12 chromosomes at the end of meiosis i, how many chromosomes
will the daughter cells contain at the end of meiosis ii?
a. 3
b. 6
c. 12
d. 24