1) which term refers to the attraction to water molecules?
a. hydrophilic
b. hydrophobic
c. hydrolysis
d. photolysis
e. nitrophylic
2) darwin’s opinion that living forms must be descended from extinct forms was based
on ________ evidence.
a. anatomical
b. biochemical
c. fossil
d. biogeographical
3) the reactivity of an organic molecule is primarily dependent upon ____________ of
the molecule.
a. the carbon skeleton
b. the attached functional groups such as a hydroxyl group
c. the isomer
d. all of the choices are correct.
4) which biological events took place during the paleozoic era and the mesozoic era?
a. during the paleozoic era three mass extinctions occurred which led to the
colonization of land by plants while during the mesozoic era gymnosperms became the
dominant plant life.
b. during the mesozoic era three mass extinctions occurred which led to the
colonization of land by plants while during the paleozoic era gymnosperms became the
dominant plant life.
c. during the paleozoic era five mass extinctions occurred which led to the colonization
of land by plants while during the mesozoic era angiosperms became the dominant
plant life.
d. during the mesozoic era five mass extinctions occurred which led to the colonization
of land by plants while during the paleozoic era angiosperms became the dominant
plant life.
5) a unique species of snail has been discovered in the negev desert. at night, these
snails use a toothlike rasping organ in their head to scrape up porous limestone; they
then digest the algae that lived in the rock pores. this scraping organ is the
a. labial palp.
b. radula.
c. mantle.
d. tentacle.
e. crop.
6) which of these plant tissue types is composed of hollow nonliving tracheids and
vessel elements that transport water and nutrient minerals from the roots to the leaves?
a. xylem
b. phloem
c. collenchyma
d. sclerenchyma
e. parenchyma
7) what are the two domains that the prokaryotes are classified under?
a. archaea & bacteria
b. eukarya & bacteria
c. archaea & eukarya
d. protista & archaea
8) which is not a function of the kidneys?
a. monitoring and maintaining blood ph
b. regulating blood pressure by regulating salt balance in the blood
c. elimination of nitrogenous wastes including urea, uric acid, and creatinine
d. hormone secretion to stimulate red blood cell production and regulate sodium ion
levels
e. production of water from oxygen and bicarbonate ions (hco3)
9) which represents the correct sequence of stages in the cell cycle?
a. g1, g2, s, m
b. g1, g2, m, s
c. g1, m, g2, s
d. g1, s, g2, m
10) sponges feed differently than comb jellies because a sponge feeds by
a. acting as a net in a current that sweeps food particles into its central cavity and
digests them externally.
b. squeezing the spongocoel cavity and sucking debris in and out through the osculum.
c. the beating of collar cells’ flagellae, which form a current; the current brings food
particles which are engulfed and digested by collar cells.
d. the beating collar cells form a current from osculum to pores; the food is engulfed by
amoebocytes in the central cavity of the sponge.
11) an amino sugar called n-acetylmuramic acid is an important building block of the
cell wall of some bacteria. penicillin prevents this amino sugar from being incorporated
into the bacterial cell wall. therefore,
a. penicillin affects bacteria but not eukaryotes because eukaryotic cell walls are
different.
b. bacterial cells that had already formed their cell walls would be unaffected.
c. penicillin would stop the growth of active colonies of susceptible bacteria.
d. all of the choices are correct.
12) what biome has a mean annual precipitation over 250 cm with relatively little
seasonal variation, and warm temperatures over 20c?
a. tropical dry forest
b. temperate rainforest
c. taiga
d. tropical rainforest
e. savanna
13) which valve is responsible for preventing the backflow of blood into the right
ventricle?
a. pulmonary semilunar
b. aortic valve
c. tricuspid
d. bicuspid
e. mitral
14) slime molds, found in the supergroup amoebozoa, were once classified as fungi.
what characteristics of the slime molds distinguish them from fungi?
a. slime molds lack cell walls.
b. they are flagellated cells at certain stages of the life cycle.
c. the vegetative state of the slime mold is mobile and amoeboid.
d. all of these characteristics distinguish slime molds from fungi.
15) a series of events occur during fertilization. place the following events in the proper
order in which they occur. a) the ‘slowblock” occurs. b) a single nuclear envelope
surrounds both sperm and egg pronuclei. c) the acrosomes of sperm release digestive
enzymes that allow the sperm to pass through the zona pellucida to the egg plasma
membrane. d) sperm cover the surface of the egg and secrete enzymes that help weaken
the corona radiata. e) pronuclei are formed. f) the “fast block” occurs. g) microvilli
bring the entire sperm into the egg. h) sperm squeeze through the corona radiata and
bind to the zona pellucida.
a. a, e, b, d, f, c, g, h
b. d, h, c, f, a, g, e, b
c. d, b, g, a, f, c, e, h
d. f, a, d, h, c, g, e, b
e. e, d, h, c, a, f, b, g
16) an ecosystem contains
a. only the biotic components of the local environment.
b. only the abiotic components of the local environment.
c. only the energy flow components of an local environment.
d. both the biotic and the abiotic components of the local environment.
e. only the food relationships found in the local environment.
17) predacious meat eaters with large and conical-shaped canines are
a. cetaceans.
b. chiroptera.
c. carnivores.
d. proboscidea.
18) in african tribes polygamy, the practice of one man having several wives,is
practiced. the advantage to the female is
a. more surviving children.
b. good food source.
c. help in child rearing.
d. all of the choices are advantages to the female.
19) _____ acts on proteins to produce peptides which are later broken down into _____
in the small intestine.
a. salivary amylase; amino acids
b. maltase; glucose
c. pepsin; amino acids
d. pepsin; fatty acids