1) which of the following statements about asexual reproduction is not true?
a. asexual reproduction occurs with only one parent.
b. asexual reproduction is less commonly used by vertebrates.
c. asexual reproduction can occur by budding or by division and regeneration.
d. a large number of offspring can be produced in this way in a short time.
e. asexual reproduction produces variation that allows the species to adapt quickly to
changing environmental conditions.
2) an unknown chemical is analyzed and found to contain the bases thymine and
guanine. this chemical is most likely
a. trna.
b. mrna.
c. dna.
d. rrna.
3) which definition best describes a population?
a. the members of a species in a given area
b. the interaction between the organisms and their environment
c. the region of earth that contains living organisms
d. the interaction between various groups of organisms in a given environment
e. all of the females of a given species in a particular area
4) what statement about homeotic genes, as it relates to morphogenesis indrosophila ,is
not true?
a. homeotic genes are found in many different organisms.
b. homeotic genes code for translational factors that bind to mrna.
c. each homeotic gene has a variable region and a sequence called the homeobox.
d. the homeobox codes for a homeodomain which is the dna-binding portion of the
transcriptional factor.
e. all homeotic genes are thought to be derived from an original dna sequence that has
been highly conserved in evolution.
5) which of the following birth control methods can help prevent the spread of sexually
transmitted diseases?
a. male and female condoms.
b. male condom and intrauterine device
c. female condom and the morning-after pill.
d. vaccines and female condoms.
e. none of the these will prevent the spread of sexually transmitted diseases.
6) which of the following studies would lie outside of an ecologists skill set?
a. studying the progression of an outbreak of hiv in sub sahara africa.
b. developing a management plan for the preservation of an endangered species.
c. proposal to develop a solar power field on the edge of a major urban area.
d. management plan to clean up a section of the mississippi river that has become
polluted due to sewage discharge.
e. all of these are part of an ecologists skill set.
7) plants show turgor pressure when
a. cells are losing water from their water vacuoles.
b. cells contain water vacuoles that are full of water.
c. water is being used up in photosynthesis.
d. water is being evaporated from the leaves.
8) what would cause you to believe that someone has a heart murmur?
a. an irregular ecg
b. irregular heart sounds instead of sharp lub-dub sounds
c. irregular heart beats
d. low blood pressure
9) glucose is found in glomerular filtrate but not in the urine because
a. the kidney stores glucose as glycogen.
b. kidney cells require glucose because energy is needed for active transport.
c. glucose is reabsorbed back into the bloodstream.
d. glucose is converted to amino acids in the kidney.
e. glucose molecules are too large to pass through the loop of the nephron (loop of
henle).
10) the highlighted grouping in the cladogram is a ____________ grouping.
a. monophyletic
b. paraphyletic
c. polyphyletic
d. none of the above.
11) which of the following statements about embryonic development is not true?
a. a blastopore is the opening into the primitive gut formed by gastrulation.
b. a blastocoel is the fluid-filled cavity of a blastula.
c. a primitive gut is also referred to as an archenteron.
d. the primitive streak occurs in the morula stage of the embryonic development.
e. a zygote undergoes cleavage, which increases the cell number, but not the volume of
the egg cytoplasm.
12) which of the following statements about lycophytes is correct?
a. the megaspores will develop into female gametophytes.
b. the microspores will develop into female gametophytes.
c. the megaspores will develop into male gametophytes.
d. lycophytes were the first land plants to evolve megaphylls.