1) a polysaccharide is a polymer made up of which kind of monomers?
a. simple sugars
b. amino acids
c. nucleotides
d. alternating sugar and phosphate groups
e. fatty acids and glycerol
2) what is the path of an excreted water molecule as it moves from the glomerulus to
collecting duct?
a. loop of nephron-glomerular capsule-proximal convoluted tubule-distal convoluted
tubule-collecting duct
b. glomerular capsule-proximal convoluted tubule-loop of nephron-distal convoluted
tubule-collecting duct
c. distal convoluted tubule-glomerular capsule-proximal convoluted tubule-loop of
nephron–collecting duct
d. proximal convoluted tubule-glomerular capsule-loop of nephron-distal convoluted
tubule-collecting duct
e. glomerular capsule-proximal convoluted tubule-distal convoluted tubule-loop of
nephron-collecting duct
3) a form of gene regulation that occurs while rna is still in the nucleus is
a. differential intron removal and splicing.
b. feedback control.
c. enzymatic cleavage of a polypeptide.
d. rate of binding to ribosomes.
4) a chemical messenger from the embryo that stimulates a seed to digest the
endosperm is
a. abscisic acid.
b. auxin.
c. cytokinin.
d. ethylene.
e. gibberellin.
5) which of the following is a function of a steroid?
a. sex hormone
b. transmission of genetic information
c. long term energy storage
d. insulation against cold
e. protective layer
6) which of these typically occur in both angiosperms and gymnosperms?
a. seeds develop within a cone.
b. seeds develop within a flower.
c. seeds are surrounded by a fruit at maturity.
d. pollen is carried by the wind for pollination.
e. pollen is carried by animal pollinators.
7) in crowded asian regions such as hong kong, there is not enough room for
cemeteries. however, the dead can be temporarily buried and their bones can later be
exhumed and stored in an ossarium, a wall made of small concrete boxes (about eight
inches by eight inches by two feet long) just large enough to contain all the human
bones. these dimensions are defined by the __________ which is thelongest bone and
the ________ which is thebone with the largest volume in the human body.
a. humerus; vertebrae
b. femur; skull
c. vertebrae; pelvis
d. radius; scapula
e. clavicle; metatarsals
8) which cell junction will allow the movement of molecules between two plant cells?
a. plasmodesmata
b. gap
c. tight
d. adhesion
9) which of these molecules acts as an atpase, breaking down atp to perform its function
in muscle contraction?
a. actin
b. myosin
c. tropomyosin
d. troponin
e. calcium
10) modern humans are
a. hominoids.
b. hominids.
c. anthropoids.
d. primates.
e. all of the choices apply to humans.
11) advantages to living in a social group for an animal includes all of the following
except
a. help in predator avoidance.
b. help raising young.
c. group food gathering.
d. spread of illness and parasites.
12) as people age, they often have trouble seeing near objects. this farsightedness is
treated by
a. radial keratotomy.
b. an unevenly ground lens to compensate for an uneven cornea.
c. cataract surgery.
d. wearing concave lenses to refocus the image on the retina.
e. wearing convex lenses to refocus the image on the retina.
13) the place where two plates meet and scrape past one another, creating stress that
results in earthquakes is a
a. subduction zone.
b. transform boundary.
c. oceanic ridge.
d. supercontinent.
14) which carbohydrate is found in the exoskeleton of insects and crabs?
a. starch
b. chitin
c. cellulose
d. glycogen
e. glycerol
15) all of the following statements are true about restriction enzymes except
a. they are made by bacteria and viruses.
b. hundreds of different ones have been isolated and purified.
c. they produce single-stranded complementary ends that can join to two different dna
strands by complementary base pairing.
d. each enzyme cuts dna at a different specific base sequence.
16) which of the following is the correct order of steps in cloning a human gene?
a. dna ligase seals the human gene and plasmid.
b. host cell takes up the plasmid.
c. gene cloning takes place as the cell undergoes the cell cycle.
d. restriction enzyme is used to cleave the dna.
a. d – a – b – c
b. a- c – d – b
c. d – a – c – b
d. d – b – c – a
17) an environmental biologist was studying the biodiversity of a wildlife refuge. in the
area, he found pine trees scattered among a variety of mixed hardwood trees. in order to
identify the pine trees, he counted the number of needles per bundle and measured the
average length of the needles. this is a ___________ study.
a. experimental
b. descriptive
c. both experimental and descriptive
d. neither experimental of descriptive
incorrect