Download Final Bio Exam Practice

Final Bio Exam Practice
Name:
1.
Date:
Which concept is part of the modern evolutionary
theory, but not Darwin's original theory?
A.
Variations in traits are caused by mutation
and recombination.
B.
Species tend to produce more o spring than
can survive.
C.
Better adapted individuals survive to produce
o spring.
4.
D. The environment is responsible for eliminating
less t individuals.
2.
A.
development from a common ancestor
B.
development in similar environments
C.
separate development merging to a common
form
D. similar reactions to environmental stress
5.
In recent years, certain strains of ies have
been observed to be resistant to the e ects of
the insecticide DDT. Although the variation
for resistance was probably present in the y
population prior to the use of DDT, the adaptive
value of the genetic trait did not become apparent
until
Evidence of the changes in a species' physical
characteristics over long geological periods can
best be shown through a study of
A.
the homologous structures of present-day
species
B.
comparative biochemistry
the fossil record
A.
acquired traits were inherited
C.
B.
the pesticide was introduced into the
environment
D. comparative embryology
C.
interbreeding between di erent
occurred
y species
6.
D. the pesticide was chemically analyzed
3.
The wing of a bat, arm of a man, and ipper of
a whale have similar internal structures. Even
though these structures have diverse functions,
their similarities suggest
In an environment, barriers prevent an organism
from entering other environments. This
phenomenon illustrates the concept of
A.
punctuated equilibrium
B.
geographic isolation
C.
genetic variation
According to Darwin's theory of natural selection,
the individuals that tend to survive are those that
have
A.
characteristics their parents acquired by use
and disuse
B.
undergone mutations
C.
the smallest number of o spring
D. variations best suited to the environment
D. natural selection
page 1
7.
The observation by Darwin that nches belonging
to di erent species on the Galapagos Islands have
many similar physical characteristics supports the
conclusion that these nches
A.
have the ability to interbreed
B.
acquired traits through use and disuse
C.
occupy the same niche on the same island
9.
The graph shown illustrates changes in the
percentages of two varieties of a certain species.
D. originated from a common ancestor
8.
Which variety will contribute signi cantly to the
future of the species gene pool?
Several thousand years ago a large ock of
migrating hawks was driven from its normal
route by a severe storm. The birds scattered and
found refuge on two distant islands, as shown on
the map. The environment of island A is very
similar to the hawk's original nesting ground. The
environment of island B is very di erent from
that of island A. The hawks have survived on
these islands to the present day with no migration
between the populations. Which statement most
accurately predicts the present-day condition of
these island hawk populations?
A.
variety A, only
B.
variety B, only
C.
both variety A and B
D. neither variety A nor variety B
10.
Which are two factors that change gene frequencies
in a population?
A.
no mutations and large populations
B.
no migration and no mutations
C.
large populations and random mating
D. mutations and nonrandom mating
A.
The hawks that landed on island A have
evolved more than those on island B.
B.
The hawks that landed on island B have
evolved more than those on island A.
C.
The population on islands A and B have
identical mutant genes.
11.
D. Hawks on island A have undergone extensive
speciation.
Favorable adaptations are genetic characteristics
that
A.
cannot be passed on to the next generation
B.
are acquired by increased use of an organ
C.
reduce the organism's chances of survival
D. improve the organism's chances of survival
page 2
Final Bio Exam Practice
12.
Di erences between the members of a population
will most likely be passed to future generations if
they are
A.
due to genetic changes and result in
unfavorable variations
B.
due to genetic changes and result in favorable
variations
C.
not due to genetic changes and result in
unfavorable variations
15.
D. not due to genetic changes and result in
favorable variations
13.
The parts on the diagram that together represent a
nucleotide are
A.
A, B, and C
B.
B, C, and D
C.
A, C, and D
16.
What is the relationship between an organism's
DNA and protein speci city?
A.
DNA becomes a speci c part of the protein
structure.
B.
DNA determines the ribosomal RNA sequence
that becomes part of the protein structure.
C.
DNA determines which RNA molecules are
incorporated into protein molecules.
A.
serve as a template for the synthesis of
messenger RNA
B.
carry a code determined by the original DNA
molecule from the nucleus to the cytoplasm
C.
pick up and transfer speci c amino acids to
the cytoplasm
D. pick up and transfer nucleic acids to the
nucleus
D. A, B, and D
14.
If the diagram represents a part of the process of
protein synthesis, strand A would
17.
D. DNA determines the amino acid sequence of
each protein.
page 3
During protein synthesis, amino acids in the
cytoplasm are picked up by molecules of
A.
transfer RNA
B.
messenger RNA
C.
mitochondrial DNA
D. nuclear DNA
The sequence of nitrogen bases on a portion of a
strand of DNA is A-T-G-C-A-A. Which sequence
best represents the portion of the messenger RNA
strand that encodes this information?
A.
T-A-G-C-T-T
B.
U-A-G-C-U-U
C.
A-U-G-C-A-A
D. U-A-C-G-U-U
Final Bio Exam Practice
18.
The diagram represents molecules invovled in
protein synthesis.
20.
Which processes are indicated by letters A and B ?
A.
meiotic cell division and fertilization
B.
mitotic cell division and fertilization
C.
meiotic cell division and cleavage
D. mitotic cell division and cleavage
21.
Where do the chemical reactions that are coded
for by molecule 2 take place?
19.
A.
in the vacuole
B.
on the plasma membrane
C.
in the lysosome
Which diagram illustrates fertilization that would
most likely lead to the development of a normal
human female?
A.
B.
D. at ribosomes
C.
Messenger RNA (mRNA) Codes
for Selected Amino Acids
D.
Amino Acid
Leucine
Arginine
mRNA Code
C–G–A
Phenylalanine
U–U–U
Lysine
A–A–A
Valine
22.
C–C–A
G–U–U
Which amino acid will be carried to a ribosome
by a transfer RNA molecule containing the triplet
code A–A–A?
A.
valine
B.
C.
leucine
D. phenylalanine
The diagram shown represents a microscopic
structure observed during the process of cell
division. Letter A indicates a
A.
nucleolus
B.
ribosome
C.
centriole
D. centromere
lysine
23.
Which is a characteristic of the group of diseases
known as cancer?
A.
uncontrolled cell division
B.
the formation of only monoploid cells
C.
meiotic cell division in body cells
D. the rapid formation of zygotes
page 4
Final Bio Exam Practice
24.
Which diagram below represents a plant cell close
to the nal stage of mitotic cell division?
B.
A.
C.
25.
27.
D.
28.
In a certain species of meadowmouse, dark coat
color is dominant over cream coat color. If
heterozygous dark-coated male mice are mated
with cream-coated female mice, what would be
the expected percentage of phenotypes in their
o spring?
A.
25% dark coated, 75% cream coated
B.
50% dark coated, 50% cream coated
C.
75% dark coated, 25% cream coated
29.
Shown is a pedigree chart. The chart shows that
Sally is a carrier for red-green color blindness.
Which is most likely the chromosomal makeup of
George's body cells?
A.
11 pairs of autosomes and one X-chromosome
B.
11 pairs of autosomes and one Y-chromosome
C.
22 pairs of autosomes and two X-chromosomes
A.
I A i and I B I B
B.
I B I B and I A I A
C.
I A i and I B i
D. I A I B and ii
Color blindness is a sex-linked trait carried on the
X-chromosome. If a colorblind woman marries a
man with normal vision, which will most probably
be true of their children?
A.
All of their sons will be colorblind and all of
their daughters will have normal vision.
B.
All of the sons and daughters will be
colorblind.
C.
About half of their sons and half of their
daughters will be colorblind.
D. All of their daughters will be colorblind and
all of their sons will have normal vision.
D. 100% dark coated
26.
A person with type O blood marries a person with
type AB blood. Possible blood genotypes of their
children are
Siamese cats have a genotype for dark fur, but the
enzymes that produce the dark coloring function
best at temperatures below the cat's normal body
temperature. A siamese cat usually has darker fur
on its ears, nose, paws, and tail, because these
parts have a lower temperature than the rest of its
body. If a Siamese cat spends much time outdoors
during very cold weather, darker fur grows in
other places on its body. Which statement is
supported by these observations?
A.
Phenotype is in uenced by both heredity and
environment.
B.
Phenotype is usually determined by the
environment, only.
C.
Genotype always has a greater in uence than
environment.
D. Genotype is in uenced by both heredity and
environment.
D. 22 pairs of autosomes, an X-chromosome, and
a Y-chromosome
page 5
Final Bio Exam Practice
30.
A cross between two plants that have pink owers
produced plants that have red, pink, or white
owers. Which is the most likely explanation for
these results?
A.
Intermediate inheritance involved alleles that
were not clearly dominant or recessive.
B.
Mutations occurred during gametogenesis.
C.
Crossing-over of white and red alleles
occurred during meiosis.
D. Nondisjunction of homologous pairs of
chromosomes resulted in the production of
abnormal o spring.
page 6
Final Bio Exam Practice
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Final Bio Exam Practice
05/21/2013
1.
Answer:
A
20.
Answer:
A
2.
Answer:
B
21.
Answer:
A
3.
Answer:
B
22.
Answer:
D
4.
Answer:
A
23.
Answer:
A
5.
Answer:
C
24.
Answer:
D
6.
Answer:
D
25.
Answer:
B
7.
Answer:
D
26.
Answer:
D
8.
Answer:
B
27.
Answer:
C
9.
Answer:
A
28.
Answer:
A
10.
Answer:
D
29.
Answer:
A
11.
Answer:
D
30.
Answer:
A
12.
Answer:
B
13.
Answer:
A
14.
Answer:
D
15.
Answer:
C
16.
Answer:
A
17.
Answer:
D
18.
Answer:
D
19.
Answer:
D