1) the structure that absorbs nutrients from the small intestines and delivers the nutrients
in the blood to the liver is the
a. hepatic portal artery.
b. hepatic portal vein.
c. renal vein.
d. none of the choices are correct.
2) bacteriophages carry portions of bacterial dna from one cell to another in a process
called
a. transformation.
b. transduction.
c. conjugation.
d. infection.
e. replication.
3) which one is not one of the properties of water?
a. the frozen form is more dense than the liquid form
b. the frozen form is less dense than the liquid form
c. water is a solvent
d. water has a high heat capacity
e. water has a high heat of evaporation
4) the amino acids we cannot synthesize are called _____ because we _____.
a. unnecessary; therefore do not need them
b. limiting; must include them in our diet
c. anabolic; must use alternative amino acids
d. essential; must include them in our diet
e. superfluous; must survive without them
5) ______ is the process of naming and assigning organisms to a taxon.
a. cladistics
b. taxonomy
c. phylogeny
d. classification
e. none of the above
6) all cells have these two characteristics:
a. contain dna in the nucleus and have a plasma membrane
b. produce a cell wall outside of the plasma membrane
c. contain mitochondria and chloroplasts
d. have a plasma membrane and ribosomes in the cytoplasm
7) due to an increased risk of heart disease many doctors have suggested shifting our
diet to include more oils instead of fats. as you cook dinner tonight the recipe calls for 2
tbs of oil. what is the most likely source of the oil you used in preparing your meal?
a. canola or olives
b. bees wax distilled down to an oil form
c. melted butter
d. lard that was left out at room temperature
e. none of these choices are oils
8) the coelomic cavity is derived from the
a. blastocoel.
b. folding of the neural tube.
c. splitting of the mesoderm.
d. elimination of the yolk sac nutrients.
e. space left after organs develop.
9) frameshift mutations
a. most often happen when one or more nucleotides are inserted or deleted from the
dna.
b. can result in a completely new codon sequence that results in the production of
non-functional proteins.
c. applies to the reading frame (sequence of codons) being changed.
d. all of the choices are correct.
10) how will cheetahs use pheromones to increase their foraging success?
a. cheetahs will scent mark their territory to warn other cheetahs to stay out. this will
decrease their competition for food within their territory.
b. cheetahs will scent mark their kills so they can find them again. this will increase
their availability of food.
c. cheetahs will scent mark their trails so that other cheetahs can follow them to optimal
food sources.
d. cheetahs do not use pheromones to increase their foraging success.
11) the most widely accepted formal classification of protists assigns them to
a. the kingdom protista.
b. six different supergroups.
c. domain archaea.
d. domain eubacteria
12) atp is considered to be
a. an enzyme used widely in all kinds of cells.
b. a coenzyme used to inhibit or activate different enzymes.
c. a molecule that carries a great deal of chemical energy in a chemical bond.
d. the precursor of a high-energy membrane-bounded protein.
13) _____ occurs when one living organism feeds on another.
a. competition
b. mimicry
c. commensalism
d. predation
e. symbiosis
14) female anolis distinguish males of their species by the color of their dewlap, a
colorful flap of skin in the neck region. this is an example of
a. a postzygotic isolating mechanism.
b. a prezygotic isolating mechanism.
c. temporal isolation.
d. hybrid inviability.