CAS BI 76213

subject Type Homework Help
subject Pages 21
subject Words 2694
subject Authors Cecie Starr, Christine Evers, Lisa Starr, Ralph Taggart

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page-pf1
Respond to the following statements in reference to the five plant tissues listed below.
a. protoderm
b. ground meristem
c. procambium
d. vascular cambium
e. cork cambium
This tissue gives rise to primary vascular tissue.
Select the best choice for the following statements in reference to the four hominids
listed below.
a. Homo habilis
b. Homo erectus
c. Homo sapiens
d. Homo neanderthalensis
The Neanderthals belong to this species.
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Answer the following questions using the group of answers below.
a. 4
b. 6
c. 8
d. 12
e. 24
Plant species X is diploid (2n = 24) and has a quantitative trait, the expression of which
is controlled by gene loci on each of its chromosomes. What is the maximum number of
alleles for this trait that any one individual of species X could have?
All organisms are alike in their
a. requirements for energy.
b. participation in one or more nutrient cycles.
c. ultimate dependence on the sun.
d. interaction with other forms of life.
e. all of these.
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Use the figure above to answer the following questions. It shows a longitudinal section
of a sponge body wall. The sponge interior is on the left.
A cell type that secretes skeletal support elements and digests and transports food is
indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Which of the following are never sink regions for the pressure-flow translocation of
organic compounds?
a. growing leaves
b. seeds
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c. fruits
d. roots
e. mature photosynthesizing leaves
Respond to the following statements with reference to the five terms listed below.
a. zygote
b. blastula
c. cleavage
d. gastrula
e. somites
Its cellular descendents give rise to all tissue and organs.
retroviruses
Match each term with the most appropriate statement.
a. cells that do not divide, die in less than a week, and secrete antibodies
b. cells that directly destroy body cells already infected by viral or fungal parasites, as
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well as mutant and cancerous cells
c. lymphocytes that are held in reserve, circulate in the bloodstream, and enable a rapid
response to subsequent encounters with the same invader
d. able to lyse cells by forming pore complexes
e. cells that are produced in the bone marrow, are never changed by the thymus, and
manufacture antibodies
f. able to destroy cells but not dependent on recognition of antigen-MHC complexes
g. a class of proteins that help cells of the immune system communicate
h. "big eaters" that alert other lymphocytes to the invasion of specific antigens
i. immature cells that may or may not be committed to develop into one of several
mature cell types
j. a group of cells that are all produced asexually from one original parent cell
k. surface patterns of nonself molecules or particles
l. proteins released by cytotoxic T cells to destroy target cell membranes
m. preparation injected into the body to elicit a primary immune response
n. one of this group has been identified as the causative agent of AIDS
ventilation
Choose the one most appropriate answer for each.
a. flexible windpipe reinforced with cartilage
b. surrounds each lung
c. oxygen-rich form of a respiratory protein
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d. contains two true vocal cords
e. alter chest cavity volume
f. part of the brainstem; controls breathing
g. throat passage behind the mouth
h. inhalation and exhalation
i. connect trachea to lungs
j. flaplike structure that points upward allowing air to enter trachea, but blocks the
larynx during swallowing
k. contraction increases thoracic volume
l. microscopically small pockets lined with moist epithelium
The stages of mitosis plus interphase are listed below. Select the correct phase for each
of the following statements.
a. interphase
b. prophase
c. metaphase
d. anaphase
e. telophase
Cytokinesis occurs after this phase of mitosis.
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Rods and cones are located in the
a. lens.
b. cornea.
c. pupil.
d. iris.
e. retina.
Respond to the following statements in reference to the five animal phyla listed below.
a. Annelida
b. Arthropoda
c. Mollusca
d. Echinodermata
e. Rotifera
This phylum has the greatest number of species.
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Which of the following is FALSE regarding morphogens?
a. They are long-range signals in pattern formation.
b. They are encoded by master genes.
c. They affect gene expression.
d. Their concentration increases with distance from source.
e. All of these are true.
Which of the following is NOT a gorilla feature?
a. Spinal cord attach at rear of skull.
b. C-shaped spine.
c. Legs longer than arms.
d. Flat foot.
e. Opposable big toe.
A collection of host cells that house different cloned fragments of DNA is a
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a. cDNA library.
b. transcribed DNA library.
c. genomic library.
d. gene library.
e. plasmid library.
The use of SNPs for analyzing genomes is based on
a. the nucleotide base pairing in the SNPs.
b. the types of nucleotides in the SNPs.
c. differences in SNPs among individuals.
d. the ratio of purines to pyrimidines in SNPs.
e. bonding patterns between nucleotides in the SNPs.
Melatonin levels are associated with
a. target cells in the hypothalamus.
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b. body temperature.
c. sleep cycles.
d. seasonal affective disorder.
e. all of these.
Some of the stages of meiosis are listed below. For the following statements, select the
best choice of these stages.
a. prophase I
b. metaphase II
c. anaphase I
d. anaphase II
e. telophase I
During this phase homologues separate.
Transcription
Choose the best matching element.
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a. deciphered the mRNA code words
b. RNA-directed synthesis of polypeptide chains
c. sites at which RNA polymerases can bind and initiate transcription
d. binds to small subunit platform of a ribosome
e. guided and catalyzed by RNA polymerases
f. polypeptide chain elongation proceeds independently at each body in this cluster
g. discovered transposons
h. a tRNA triplet opposite a codon
i. a set of three nucleotides
Water tension in a transpiring plant
a. is exerted on a continuous column of water throughout the plant.
b. is the result of the hydrogen bonding of water molecules.
c. results in negative pressure in the xylem.
d. exerts a pull on water molecules from leaves to roots.
e. fits all of these descriptions.
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Long-day plant
Choose the one most appropriate answer for each. Some letters may not be used.
a. flower each successive year or after several years of vegetative growth
b. promotes cell elongation in stems
c. has receptor sites for a particular hormonal message
d. a hollow, cylindrical organ that protects young leaves growing within it
e. blue-green pigment that absorbs light energy
f. low-temperature stimulation of flowering
g. stimulates stomata closure and might be involved in root geotropism
h. stimulates fruit ripening
i. reproduces in spring
j. produces only roots, stems, and leaves the first growing season and produces flowers
the second year
k. occurring on a 24-hour cycle
l. flowers in autumn
m. a nonhormonal plant growth regulator
n. lives for only one growing season
o. promotes stem elongation in plants
p. pigment involved in flowering process
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Proto-cells are considered to have
a. been simple membrane-bound sacs.
b. been able to capture energy.
c. been able to engage in metabolism.
d. been able to reproduce.
e. all of these.
Which statement is NOT true about Monteverde Cloud Forest Reserve?
a. It was purchased by a private individual.
b. It is one of the few habitats left for jaguarand ocelot.
c. It is home to more than 400 species of birds.
d. There are only a few mammalian species still surviving in the Reserve.
e. Ecotourism on the reserve provides employment to local people.
Which of the following is not true of telomeres?
a. The have the sequence TTAGGG.
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b. They are at the ends of chromosomes.
c. Their sequence is actively transcribed.
d. They shorten by 100 bases with each round of cell replication.
e. They shorten from the action of DNA polymerase.
Of the following, which term means the judging of information before accepting it as
fact?
a. Critical thinking
b. Law
c. Theory
d. Fact
e. Hypothesis
The outer layer of skin is mostly ____ epithelium.
a. simple squamous
b. simple cuboidal
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c. stratified squamous
d. simple columnar
e. stratified cuboidal
Answer the following questions in reference to the four groups of fungi listed below.
a. Zygomycetes
b. Ascomycetes
c. Basidiomycetes
d. Glomeromycetes
The common black bread mold is a member of this group.
Glucose and fructose
a. form rings with the same number of carbon atoms.
b. both have two oxygen atoms as part of their ring structure.
c. are alike in that both have identical functional groups.
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d. contain the same number of hydrogen atoms and hydroxyl groups.
e. are disaccharides.
Respond to the following statements with reference to the five terms listed below.
a. zygote
b. blastula
c. cleavage
d. gastrula
e. somites
This is the division of the zygote.
All of the following statements about master genes are true EXCEPT:
a. They orchestrate layers of development.
b. They are highly conserved over evolutionary time.
c. Mutations within these are frequently devastating.
d. They are highly variable in their sequences between species.
page-pf11
e. Mutations usually result in changes in body plan.
The following questions refer to the genetic code table above.
AUGCGUCCA
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The sequence of amino acids specified by this mRNA is
a. serine - histidine - lysine.
b. methionine - arginine - proline.
c. methionine - alanine - serine.
d. valine - arginine - leucine.
e. none of these.
All of the populations of different species that occupy and are adapted to a given area
are
a. the biosphere.
b. a community.
c. an ecosystem.
d. a niche.
e. an ecotone.
All of the following can contribute to desertification EXCEPT
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a. drought.
b. overplowing.
c. overgrazing.
d. farming in areas with high winds.
e. all of these.
The Reznick and Endler guppy study showed that killifish and pike-cichlids raised in
natural conditions will
a. affect the age at first reproduction of the guppies that live with them.
b. prey on guppies.
c. affect the growth rate of guppies.
d. affect the evolution of the guppies' life history traits.
e. do all of these.
Labeling.
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thyroid gland
Bacteriophages may multiply by a __________ pathway in which the new viral
particles are made quickly and released by lysis.
19th-century naturalists tried to reconcile traditional beliefs with physical evidence of
__________.
page-pf15
Light enters the eye's interior through the __________, an adjustable opening in the
center of the muscular, doughnut-shaped iris.
ribosomes
Labeling.
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small intestine
At one time, the pituitary was known as the "master gland". Explain why this name is
both fitting and misplaced.
Provide some of the adaptations that allowed animals to adapt to life on dry land?
page-pf17
The loss of an electron by a molecule is called __________.
In garden peas, one pair of alleles controls the height of the plant, and a second pair of
alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf
(d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with
purple flowers crossed with a dwarf plant with white flowers produces 1/2 tall with
purple flowers and 1/2 tall with white flowers. What is the genotype of the parents?
In garden peas, one pair of alleles controls the height of the plant, and a second pair of
alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf
(d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with
white flowers crossed with a dwarf plant with purple flowers produces 1/4 tall purple,
1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white. What is the genotype of the
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parents?
Why do ferns only thrive in moist environments?
How many of the mass extinctions have had an organic cause?
page-pf19
bronchial tree
In __________, one of the sperm cells in the pollen tube fertilizes the egg, forming a
zygote; the other fuses with the endosperm mother cell and gives rise to __________.
Explain why flowers that attract flies are well-adapted to their pollinator?
page-pf1a
What happens when a plant has "foolish seedling" disease?
Labeling. The following statements refer to the figure below showing the general body
plan of a plant.
page-pf1b
The sexual organs of the plant are contained in the structure labeled __________.

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