1) once exposed to an antibiotic drug, bacteria will develop a resistance in order to
survive and then pass the resistance onto subsequent generations. this is an example of
lamark’s idea of the inheritance of acquired characteristics.
2) the deceleration phase of growth always precedes the stable equilibrium phase in
exponential growth.
3) plants that reproduce asexually by growth of a new plant from stems or roots show
vegetative propagation.
4) wegener first presented the idea of continental drift in 1920 and this theory was
confirmed in 1960.
5) mutualism is a beneficial relationship between a plant and animal species. it can lead
to the death of the plant species if the animal species is removed from the environment.
6) monocot roots have centrally located ground tissue called pith, surrounded by a ring
of xylem and phloem bundles.
7) extra copies of sex chromosomes are more easily tolerated in humans than extra
copies of autosomes.
8) allergies are hypersensitivities to substances that ordinarily would do no harm to the
body.
9) a failure in the lymphatic valves located in the left subclavian vein may result in
a. edema in the left arm and left ventral chest wall.
b. a decrease of fluid in the left arm and left ventral chest wall.
c. an overproduction of t cells within the thymus.
d. an increase in the amount of lipoproteins in the bloodstream.
10) identify the correct pathway of blood flow through a two circuit pathway.
a. ventricle – systemic circuit – right atrium
ventricle- pulmonary circuit – left atrium
b. right atrium – ventricle – systemic circuit
left atrium – ventricle- pulmonary circuit
c. ventricle – gill capillaries – aorta – systemic circuit – atrium
d. right atrium – systemic circuit – ventricle
left atrium – pulmonary circuit – ventricle
e. ventricle – systemic circuit – left atrium
11) the overall function of meiosis includes all of the following except
a. gamete production.
b. reduction of chromosome number (from 2n to n).
c. providing genetic variation in sexually reproducing organisms.
d. growth of the overall individual.
12) dogs scent-mark by defecating and urinating in an area, while cats scent-mark by
rubbing against objects. both of these increase the animals level of fitness and are
examples of
a. altruism.
b. sexual selection.
c. territoriality.
d. foraging.
13) which of the following statements about biological diversity is not true?
a. scientists estimate that 10-50 million species exist.
b. biodiversity is described in terms of genetic, community, and landscape diversity.
c. biodiversity refers to the variety of life on earth.
d. biodiversity is evenly distributed throughout the biosphere.
e. many species that are in danger of extinction have not been identified and studied.
14) which is the best definition of active transport?
a. movement of molecules from an area of their higher concentration to an area of their
lower concentration
b. movement of water across a semi permeable membrane from an area of higher water
concentration to an area of lower water concentration
c. movement of molecules from an area of their lower concentration to an area of their
higher concentration
d. movement of water across a semi permeable membrane from an area of lower water
concentration to an area of higher water concentration
e. movement of a substance against its concentration through the release of energy from
atp
15) dna is housed within the nucleus, but the mrna code needs to leave in order to be
translated into a protein. how does the mrna code leave the nucleus if the nucleus is
surrounded by the nuclear envelope?
a. the nuclear envelope dissolves in order to allow the mrna code to leave.
b. the nuclear envelope contains pores that allow the mrna to exit through.
c. a vesicle will bud off from the nuclear envelope containing the mrna.
d. the mrna will be coded into a protein within the nucleus. then the protein leaves the
nucleus.
16) a flower
a. is the sexual reproductive organ.
b. is composed of whorls of modified leaves.
c. serves to attract animal pollinators.
d. may contain male and female reproductive parts.
e. all of the choices characterize flowers.
17) which of the following are causes for extinction?
a. habitat loss
b. exotic species
c. pollution
d. all of these are causes for extinction.
e. none of these are causes for extinction.
18) the position of mammals in evolution is best described as
a. they dominate life in the sea.
b. they were among the first animals to live on land and their diversity is greater than all
living things known.
c. they arose from mammal-like reptiles in the jurassic but remained small and
insignificant while dinosaurs dominated the land.
d. mammals gave rise to birds.
e. all of the choices are correct.
19) which of the following statements about the cerebrum is not true?
a. it is the largest part of the human brain.
b. the gray matter is outermost.
c. the right hemisphere is associated with analytical reasoning and the left hemisphere is
associated with artistic and musical ability.
d. the two cerebral hemispheres are connected by the corpus callosum.
e. the cerebrum coordinates the activities of the other parts of the brain.
20) a distinctive form of this pictured organism is found in each geologic period. which
statement(s) about this organism is/are true?
a. the organisms pictured are foraminiferans, members of supergroup rhizarianand have
a skeleton called a test.
b. these organisms may be used as index fossils to date sedimentary rock.
c. the egyptian pyramids are built of this type of limestone.
d. all of the above are true.
e. the organisms pictured are foraminiferans, members of supergroup excavates.
21) in a population with low death rates, this age structure diagram indicates that
a. the population is decreasing.
b. the population is stable.
c. the biotic potential must be larger than usual.
d. the population will continue to grow for some time.