1) which component in an operon is incorrectly matched with its function?
a. promoterwhere rna polymerase first binds to dna
b. regulator genebinds to the repressor protein
c. structural genemakes mrna by transcription
d. operatorif not bound to repressor, allows rna polymerase to bind to dna
2) the cortex found in the center of a dicot stem or a monocot root is made of what type
of tissue?
a. ground tissue
b. epithelial tissue
c. vascular tissue
d. dermal tissue
3) infection of the primary and secondary bronchi is
a. acute bronchitis.
b. pneumonia.
c. pulmonary tuberculosis.
d. emphysema.
4) which of the following is not a function of bile salts?
a. act as emulsifiers
b. needed for fat digestion
c. aid the enzyme lipase in the digestion of fat molecules
d. production of vitamin d
5) the first codon to be deciphered was ______, which codes for ________.
a. aaa, proline
b. ggg, alanine
c. uuu, phenylalanine
d. ttt, arginine
e. ccc, glycine
6) the newly discovered membrane channel protein that accounts for why water can
cross a membrane more quickly than expected is:
a. atp synthetase
b. aquaporin
c. the sodium-potassium pump
d. integrin
7) which section of the pre-mrna contains the protein coding regions?
a. exons
b. introns
c. the entire pre-mrna contains proteincoding regions.
d. the pre-mrna does not code for proteins at all.
8) which scenario is most likely to occur if the mitochondria in the kidney cells were to
decrease in function?
a. the kidneys would improve in function.
b. the kidneys would begin excreting large amounts of waste products.
c. the amount of active transport in the kidneys would significantly decrease.
d. the amount of active transport in the kidneys would increase.
9) asexual reproduction in the liverwort marchantia is by means of
a. the detachment of gemmae.
b. budding of daughter cells.
c. fragmentation of filaments of cells.
d. the fusion of antheridial and archegonial products.
10) what are alleles?
a. genes for different traits, such as hair color or eye color
b. alternative forms of a gene for a single trait, such as blue eyes or brown eyes
c. the locations of genes on a chromosome
d. recessive forms of a kind of characteristic carried by genes
e. dominant forms of a kind of characteristic carried by genes
11) which of the following plant hormones is used to prolong the life of flower cuttings
and stored vegetables?
a. auxins
b. cytokinins
c. ethylene
d. iaa
12) which of the following examples is best explained by the process of convergent
evolution?
a. the wings of birds and butterflies being used for flight.
b. both mice and rats having a tail.
c. wolves and coyotes both producing milk for their young.
d. a human cell and a fruitfly cell both going through the process of transcription and
translation in order to produce a gene.
13) which of the following statements is true about the life cycle of animals?
a. the gametes are the haploid phase of the animals life cycle.
b. the gametes are the diploid phase of the life cycle.
c. the products of the haploid phase of the life cycle are larger than those of the diploid
phase.
d. meiosis is not a necessary component of the animal life cycle.
14) which of the following statements about the vertebrae is not true?
a. twenty-six vertebrae make up the vertebral column.
b. the vertebrae form a dorsal backbone.
c. the vertebrae help form 4 curvatures of the spine.
d. the vertebrae are separated by intervertebral disks.
e. the vertebrae protect the spinal cord.
15) as the carrying capacity of an environment is approached by a population,
a. births begin to exceed deaths.
b. deaths begin to exceed births.
c. the rate of reproduction increases.
d. population growth begins to be exponential.
e. density-dependent environmental resistance increases.
16) a hypothesis is tested by:
a. a prediction
b. experimentation
c. analysis of results
d. formulation of a theory
17) which process produces alcohol or lactate?
a. the citric acid cycle
b. glycolysis
c. the electron transport system
d. fermentation
e. the preparatory reaction