1) which of these plant tissue types is composed of sieve-tube elements and companion
cells, and transports organic nutrients made in the leaves?
a. xylem
b. phloem
c. collenchyma
d. sclerenchyma
e. parenchyma
2) which of the following processes does not take place during translation?
a. growth of a polypeptide chain.
b. attachment of a ribosome to mrna.
c. binding of two trna molecules per ribosome.
d. liberation of polypeptide from the ribosome.
e. production of mrna.
incorrect
3) a deletion of one base pair that alters the sequence of codons is called a(n)
a. transposon.
b. substitution mutation.
c. carcinogen.
d. oncogene.
e. frameshift mutation.
4) which is most closely associated with the calvin cycle?
a. atp production
b. oxygen production
c. carbon dioxide fixation
d. carbon dioxide production
e. removal of electrons from water for passage through an electron transport system
5) the type of bone tissue that is found in the middle portion of a long bone and has
lacunae arranged in concentric circles around central canals that contain blood vessels
and nerves is
a. spongy bone.
b. compact bone.
c. red marrow.
d. yellow marrow.
e. fibrous membrane.
6) all of the following are examples of damage caused by acid deposition from rain
except
a. leaching of aluminum from the soil into lakes which results in the formation of toxic
methyl mercury from mercury in the lake sediments
b. weakens trees in the forests and kills seedlings
c. increased agricultural yields
d. damage to marble and limestone monuments
incorrect
7) plant hormones are generally produced in _______ tissues.
a. cortical (cortex)
b. epidermal
c. meristematic
d. vascular
e. floral
8) which of the following statements about stratified temperate zone lakes is not true?
a. solar radiation warms the surface layers in summer.
b. rich nutrients from the continual production of detritus accumulate near the surface
of the lake.
c. temperature gradients change from summer to winter.
d. populations of plankton and zooplankton depend on both sunlight and nutrient levels.
e. wind aids in the circulation of water.
9) which of the following tissues makes up the majority of the interior of the plant?
a. ground tissue
b. epidermal tissue
c. meristem
d. vascular tissue
10) rosy periwinkle, the nine-banded armadillo, and some species of fungus and
bacteria have _________ value to man.
a. agricultural
b. medicinal
c. consumptive use
d. indirect
e. no
11) which of the following conditions is not necessary to maintain the hardy-weinberg
equilibrium?
a. large gene pool
b. no migration
c. mutation
d. random mating
e. no selection
12) which of the following has a four-chambered heart like humans?
a. birds
b. some reptiles
c. amphibians
d. all of the choices are correct.
e. birds and some reptiles.
13) which statement is not true about root adaptations in plants?
a. some plants have very poorly developed roots or none at all.
b. fungal mycorrhizae depend on plants for the fungus’s supply of water and minerals.
c. some plants, including orchids, require the presence of fungal symbionts to survive.
d. parasitic plants have root adaptations called haustoria that draw nutrients from the
host.
e. bacteria of the genus rhizobium live in root nodules in legumes, producing available
nitrogen that the plant uses.
14) a heart murmur is a distortion of the heartbeat due to blood flowing back through a
valve that should be closed. if the heart sound is lub-dub-ssshhh, the most likely cause
is a failure of the
a. atrioventricular valves.
b. semilunar valves.
c. mitral (bicuspid) valve.
d. av node to signal contraction.
e. sinoatrial node to signal contraction.
15) rhizobium bacteria live in root nodules and
a. fix atmospheric nitrogen to nh4+ to build organic compounds.
b. fix carbon dioxide so that the carbon may be used to build glucose.
c. increase the surface area, thereby increasing the water absorbing capacity of the
plant’s roots.
d. all of the above are true.
16) biotechnology products produced by bacteria include all of the following except
a. an antibody to deliver radioisotopes to tumor cells.
b. clotting factor viii.
c. human growth hormone.
d. insulin.
17) climate is affected and/or characterized by all of the following factors except
a. temperature.
b. variations in solar radiation distribution.
c. topography.
d. soil type
e. rainfall.
18) which of the following tissues transports water and nutrients within the plant?
a. epidermal tissue
b. ground tissue
c. meristematic tissue
d. vascular tissue
19) the carbon dioxide we exhale is produced in
a. glycolysis.
b. the electron transport system.
c. lactate fermentation.
d. the citric acid cycle.
20) which is most closely associated with negative feedback?
a. as you continue to turn a faucet handle, more water flows out of it.
b. a child cuts his finger and the blood clotting process begins.
c. as the temperature falls in a house, the heater comes on.
d. as a woman goes into labor, hormones are secreted that stimulate the process.