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Fossils include
a. skeletons.
b. shells.
c. seeds.
d. tracks.
e. all of these.
The following questions refer to the figure above.
The structures labeled "B" in the figure are
a. zygospores.
b. haploid spores.
c. ascospores.
d. gametes.
e. zygotes.
The above figure represents a(n)
a. atom.
b. tissue.
c. molecule.
d. organ.
e. cell.
Match the following letters to the number with which they best correspond.
a. Observation
b. Question
c. Hypothesis
d. Prediction
e. Observational experiment
f. Laboratory experiment
g. Assessment
h. Report
Submit the results and the conclusions to the scientific community.
The male gametophytes are
a. ovules.
b. seeds.
c. pollen grains.
d. cones.
e. sperm cells.
Using the illustration above and the assumption that half of a plant's sperm and eggs are
aand half are A, one can predict that the chance of sperm ameeting egg Aat fertilization
is
a. 1/2 x 1/2.
b. 25 percent.
c. one out of four.
d. 1/2.
e. all of these EXCEPT 1/2.
The axial skeleton includes all EXCEPT which of the following?
a. skull
b. ribs
c. pectoral girdle
d. sternum
e. vertebral column
How many amino acids are considered to be essential because the human body cannot
synthesize them?
a. 2
b. 5
c. 8
d. 10
e. 12
Answer the following questions using the five groups listed below:
a. halophiles
b. cyanobacteria
c. thermophiles
d. proteobacteria
e. methanogens
These can form heterocysts, valuable in nitrogen fixation.
The following questions refer to the figure above and to the
Fred Griffith experiments involving Streptococcus
pneumoniae.
If the syringe contains live R strain and heat-killed S strain
Streptococcus pneumoniae
a. the mouse will live.
b. live S strain bacteria will be detected in the mouse's blood.
c. the mouse's blood will contain live pathogenic R strain bacteria.
d. The dead S strain bacteria will transform to live R strain bacteria.
e. DNA from the live R strain bacteria will revive the dead S strain bacteria.
Volume increases by the ____ of the diameter, and surface area increases by ____ of the
diameter.
a. square; doubling
b. square; the cube
c. cube; the square
d. cube; the cube
e. none of these is the correct answer
Multiple effects of a single gene is
a. expressivity.
b. penetrance.
c. codominance.
d. pleiotropy.
e. multiple alleles.
Habitats with the most species in greatest danger of extinction are called
a. ecoregions.
b. indicator species.
c. riparian zones.
d. hot spots.
e. conservation islands.
Respond to the following statements in reference to the four kinds of energy listed
below.
a. chemical
b. mechanical
c. thermal
d. light
The warmth you feel from a campfire is a result of detecting this kind of energy.
Of all the different codons that exist, three of them
a. are involved in mutations.
b. do not specify a particular amino acid.
c. cannot be copied.
d. provide instructions such as STOP.
e. do not specify a particular amino acid and provide instructions such as STOP.
Cytoplasmic division in animal cells involves all EXCEPT
a. formation of a cell plate.
b. a contractile ring mechanism.
c. a deepening cleavage furrow.
d. a ring of actin filaments under the plasma membrane at the equator.
e. ATP.
Which of the following do the Kuna suffer very little from?
a. Hypertension.
b. Yellow fever.
c. Malaria.
d. Dengue fever.
e. They suffer little from any of these.
Respond to the following items in reference to the four cell types listed below.
a. sensory neurons
b. interneurons
c. motor neurons
d. Schwann cells
Cells that carry signals to muscle cells
Bully whippets are unable to synthesize:
a. testosterone.
b. growth hormone.
c. estrogen.
d. progesterone.
e. myostatin.
Monosomy
Choose the most appropriate answer for each.
a. 3n; generally sterile
b. a chromosome segment is permanently transferred to a nonhomologous chromosome
c. (2n - 1); a zygote deprived of a chromosome
d. a repeat of a particular DNA sequence in the same chromosome or in nonhomologous
ones
e. (2n + 1); three chromosomes of the same kind are present in a set of chromosomes
f. a piece of the chromosome is inadvertently left out during the repair process
g. inhibits microtubule assembly; used in karyotyping
h. a chromosome segment that has been cut out and rejoined at the same place, but
backward
By definition, a nerve is
a. a bundle of sensory, motor, or both types of nerve fibers outside the central nervous
system.
b. a single extension of a neuron.
c. the same as a neuron but within the central nervous system.
d. a collection of nerve cell bodies outside the central nervous system.
e. a fiber more than ten inches in length.
Which of the following statements is TRUE?
a. Once a person reaches maturity, cell division stops except to repair wounds.
b. Cell division in an adult signifies cancer.
c. Some specific cells throughout the body retain the ability to divide and replace
themselves.
d. Growth continues throughout the life of an adult human.
e. All cells retain the ability to divide even after the organism reaches maturity.
Transport control
Choose the one most appropriate answer for each.
a. influences the amount and kinds of mRNA assembled from structural genes
b. snipping out of transcript regions; chemical modification of transcript before it
arrives at ribosome control
c. nuclear envelope selectively regulates passage of transcripts
d. phosphorylation of translated protein
e. for example, the interior environmental pH determines whether a protein can act as a
cell catalyst
For the following statements select the best choice of the four evolutionary processes
listed below.
a. mutation
b. gene flow
c. genetic drift
d. natural selection
The occurrence of mimicry is best explained as the ultimate result of this process.
tubal ligation
Choose the one most appropriate answer for each.
a. the production and secretion of milk
b. sloughing off of endometrium stops permanently
c. induced dislodging and removal of an embryo or fetus from the uterus
d. an abortion that occurs spontaneously
e. the burrowing of the blastocyst into the uterine lining
f. the release of an egg from the ovary
g. the release of seminal fluid from the male reproductive tract
h. a 100-percent-effective method of preventing conception
i. a highly unreliable form of birth control
j. the periodic elimination of the uterine lining
k. characterized by involuntary muscle contractions, release of tension, and warmth
l. sexual intercourse
m. sperm and egg cannot meet because a section of oviduct is missing
n. cutting and tying of vasa deferentia
The following questions refer to the figure above illustrating the stratifications of a lake
in a temperate region.
The profundal zone is indicated by
a. A.
b. B.
c. C.
d. D.
e. none of these.
The above figure represents which of the following:
a. a male with trisomy 21
b. a female with trisomy 21
c. a result caused by the use of colchicine
d. a gorilla globin gene spread
e. none of these
upwellings
Choose the one most appropriate answer for each.
a. northern coniferous forest
b. increases oceanic productivity
c. mosaics of tall, coarse grasses, shrubs, and low trees; even, humid forests; high
rainfall
d. stratified on rocky coasts
e. includes sediments and rocks on the ocean bottom
f. stratified communities with vines, orchids, and monkeys, and nutrient-poor soil
g. chemoautotrophs are the primary producers
h. dwarf willows, mosses, lichens, caribou, and permafrost
i. nurseries of the oceans
j. a large region characterized by its large array of dominant primary producers
Which factor is the most important algal contribution to the fungal component of a
lichen?
a. improved water conservation
b. mechanical protection
c. photosynthetically derived food
d. conversion of nitrogen gas to nitrates
e. pigment for camouflage
The cell wall
a. provides physical support for plant cells.
b. controls the transport of materials out of the cell.
c. replaces the plasma membrane in plant cells.
d. is found in all eukaryotes.
e. prevents the transport of toxic substances into the plant cells.
When cells stop responding to normal controls over growth and division they
a. begin to form a tumor.
b. produce a malignancy.
c. start to die.
d. kill surrounding cells.
e. produce scar tissue.
Which is not a typical feature of anthropoids?
a. Diurnal.
b. Good eyesight.
c. Color vision.
d. Carnivorous.
e. All of these.
