1) the waggle dance of a bee indicates to other bees in the hive the direction of food.
2) the process by which a white blood cell or an amoeba engulfs bacteria is called
phagocytosis.
3) are only present in the cell immediately before apoptosis begins.
4)
the cylinders in this experiment represent a 24-hour period. the light area represents
light periods during a 24-hr. period and the dark area represents dark periods during a
24-hr. period. the critical length of dark vs. light periods for flowering is depicted by the
dotted line. note that some plants are flowering and some are not flowering.
long-day plants will never flower if the day length is shorter than the critical period.
5) organisms in all trophic levels may be consumed by decomposers.
6) stratified epithelium is composed of multiple layers of flattened cells that can often
be found in the lining of blood vessels.
7) fermentation follows glycolysis in some cells when oxygen is not available.
8) the dentition of omnivores is specialized for ______ in their diets.
a. meat only
b. plants only
c. bacteria only
d. both plants and meat
9) if a parent cell has 48 chromosomes, how many chromosomes will each daughter cell
have after mitosis and cytokinesis occurs?
a. 24 chromosomes
b. 48 chromosomes
c. 12 chromosomes
d. 96 chromosomes
10) which of the following statements about parathyroid hormone (pth) is not correct?
a. parathyroid hormone promotes the release of calcium from bones.
b. when blood calcium levels are low, pth secretion is stimulated.
c. pth decreases the activity of osteoclasts.
d. pth promotes the reabsorption of calcium by the kidneys.
e. pth has the opposite effect of calcitonin.
11) muscle contraction is triggered
a. when high levels of oxygen and sugar are released by the sarcolemma.
b. when a surplus of atp is released by a nerve motor unit.
c. by release of a neurotransmitter at a synapse that directly causes actin and myosin to
slide.
d. by the nerve releasing a neurotransmitter, which triggers a flow of calcium that
attaches to actin filaments and exposes the myosin binding sites.
e. by the nerve releasing a neurotransmitter, which triggers a flow of calcium that
releases atp and begins the actin filaments sliding across the myosin binding sites.
12) virtually all specialized cells of multicellular organisms
a. develop through mutation from less specialized cells of the organism.
b. contain more genetic material than less specialized cells of the same organism.
c. contain less genetic material than less specialized cells of the same organism.
d. have the same amount of dna and the same number of chromosomes as all other cells
of the organism and develop from the same basic stem cells.
13) which of the following visual association with its related cause is not correct?
a. color blindness – lack of red or green cones
b. eyestrain – muscle fatigue from constant contraction of the ciliary muscle
c. cataracts – lens becomes opaque with aging and sun exposure
d. nearsighted – unable to see near objects in detail
14) which animals would be classified as continuous feeders?
a. clams, baleen whales, and oysters
b. clams, crickets, and dolphins
c. worms, clams, and crayfish
d. oysters, hummingbirds and planarian
e. none of these groups are all continuous feeders.
15) which of the following is an example of evolutionthat can be observed and studied?
a. bacterial resistance to antibiotics
b. resistance of weeds to select herbicides
c. resistance of hiv to drug treatment
d. all are examples of evolution that can be observed and studied.
16) an orbital is best described as
a. the electron shell closest to the nucleus.
b. the outermost electron shell of an atom.
c. the volume of space in which electrons are most often found.
d the original energy level of electrons in photosynthesis.
17) when you are studying with the tv on, which part of the brain filters out unnecessary
sensory stimuli so that you can focus on your studies?
a. hypothalamus
b. cerebellum
c. reticular activating system
d. limbic system
e. basal nuclei
18) energy coupling of endergonic and exergonic reactions within cells
a. permits biological reactions to proceed at temperatures consistent with life.
b. uses heat released by one reaction to fuel the other reaction.
c. utilizes atp to carry energy between the exergonic and endergonic reactions.
d. all of the choices are correct.
19) why is the energy expended during endocytosis worth it?
a. the cell increases the amount of atp produced in order to complete endocytosis.
b. the contents drawn into the cell are isolated from the cytoplasm preventing them
from altering the cells function.
c. the cell expends such a small amount of energy to run endocytosis it doesn’t really
matter.
d. there is no energy expenditure during endocytosis.
20) which of the following statements about the nature of bone is true?
a. bone is active, growing tissue with an extensive blood supply.
b. bone is similar to cartilage, nearly inert, and with little blood supply.
c. bone is active and living when formed by osteoblast but dies after it hardens.
d. bone is nonliving calcium deposits and removing bone is a bloodless operation.
e. the outer compact bone is nonliving calcium, but the bone marrow is active living
tissue.
21) identify which of the following feature(s) are found in the cnidarians but not in the
comb jellies.
a. they are free swimming invertebrates.
b. they contain a capsule called a nematocyst.
c. produce movement by the beating of cilia.
d. much of the body is composed of a jellylike substance called mesoglea.
e. these species can be found in the marine environment.
22) the formation of the lens of the vertebrate eye from a skin layer in contact with an
outgrowth of the embryonic brain is an example of
a. cellular aggregation.
b. induction.
c. morphogenesis.
d. gastrulation.
e. neurulation.
23) if you wash your skin and hair several times a day, you will soon have dry skin that
easily cracks and bleeds because the oils you have removed are necessary to keep the
skin supple. this oil is
a. pili secreted by arrectors.
b. lymph secreted by lymphatic ducts.
c. sebum secreted by sweat glands.
d. sebum secreted by sebaceous glands.
e. salty sweat secreted by sweat glands.