MDC BSC 1005 FINAL EXAM STUDY GUIDE questions
with verified answers
__________ proposed that geological processes are still ongoing.
Ans✓✓✓ Lyell, a contemporary of Darwin's, theorized that geological
forces working in the present are no different from those working in
the past and that these forces gradually change Earth's surface.
__________ proposed that species evolved by the inheritance of
characteristics acquired by their parents. Ans✓✓✓ n 1809, Lamarck
published the first theory of evolution, in which he explained how living
things change over time in response to a specific need
A carrier of a human genetic disorder __________. Ans✓✓✓ is
heterozygous for a recessive disorder-causing allele
A DNA molecule is a polymer made of __________. Ans✓✓✓
nucleotides
A gene is __________. Ans✓✓✓ the information for making a specific
amino acid sequence
A gradual, though still reversible, physiological adjustment that occurs
in response to an environmental change is called . Ans✓✓✓
acclimation
,A human skin cell, in prophase of mitosis, contains 46 chromosomes.
How many chromatids does it contain in total? Ans✓✓✓ A sister
chromatid is one of the two identical DNA molecules that make up a
duplicated chromosome. A cell in prophase of mitosis has already
undergone chromosomal duplication (DNA replication). Each
chromosome will consist of a pair of sister chromatids. Therefore, if the
cell has 46 chromosomes, there will be a total of 92 chromatids.
A human somatic (body) cell has __________ chromosomes. Ans✓✓✓
Different organisms have different numbers of chromosomes; human
somatic cells have 46 chromosomes, for example, whereas onion cells
have 16. The 46 human chromosomes exist as 23 pairs: 22 pairs of
autosomes and one pair of sex chromosomes (X and Y). Individuals that
have an XY are classified as biologically male, while individuals with XX
are biologically female.
a laboratory technique that produces an image of an individual's
chromosomes Ans✓✓✓ a karyotype
A new family moved into your neighborhood. They have four children,
all of whom are boys, and the mother is pregnant. What is the
probability that the new baby will be a boy? Ans✓✓✓ 50%
A person with an autosomal recessive disorder generally has how many
copies of the dominant allele? Ans✓✓✓ Zero
,A population has an allele frequency of 0.4 for the recessive allele and
0.6 for the dominant allele of a two-allele trait. According to the Hardy-
Weinberg theorem, what frequency would you predict for the recessive
phenotype? Ans✓✓✓ According to the Hardy-Weinberg theorem, the
frequency of the recessive phenotype is q2, where q is the frequency of
the recessive allele. If the recessive allele frequency (represented by q)
is equal to 0.4 and the dominant allele frequency (p) is 0.6 (or 1-0.4),
then the frequency of the recessive phenotype (q2), or 0.4 x 0.4, equals
0.16.
A researcher wanting to learn more about the interactions between
bees and the flowers they pollinate would study a/an . Ans✓✓✓ A
community is all the living organisms in an ecosystem, including bees
and the flowers they pollinate.
A sequence in DNA specifies __________. Ans✓✓✓ the amino acid
sequence of a protein
According to complementary base-pairing rules, for every G in the DNA
double helix, there must be __________. Ans✓✓✓ Every G (guanine)
nitrogenous base in DNA will be bonded to a C (cytosine).
The four nitrogenous bases of DNA are adenine, cytosine, guanine, and
thymine. In the DNA double helix, bases on one strand form pairs with
bases on the other strand according to the base-pairing rules: G pairs
with C (G-C or C-G), and A pairs with T (A-T or T-A). G-C base pairs have
, three hydrogen bonds holding them together; A-T base pairs have two
hydrogen bonds.
According to the biological species concept, a species is composed of
__________. Ans✓✓✓ individuals capable of interbreeding and
producing fertile offspring
According to the principle of segregation, the gametes of a
heterozygous individual will be ___________. Ans✓✓✓ 50% dominant
and 50% recessive
Airborne pollutants such as nitrogen oxides and sulfur oxides combine
with water vapor to produce acids that can fall to Earth as acid rain
(acid precipitation). Life in habitats such as freshwater lakes can be
threatened by acid rain because it . Ans✓✓✓ lowers the pH
All of the following are DNA bases except __________.
ANSWER
alanine
Unselected
adenine
Unselected
with verified answers
__________ proposed that geological processes are still ongoing.
Ans✓✓✓ Lyell, a contemporary of Darwin's, theorized that geological
forces working in the present are no different from those working in
the past and that these forces gradually change Earth's surface.
__________ proposed that species evolved by the inheritance of
characteristics acquired by their parents. Ans✓✓✓ n 1809, Lamarck
published the first theory of evolution, in which he explained how living
things change over time in response to a specific need
A carrier of a human genetic disorder __________. Ans✓✓✓ is
heterozygous for a recessive disorder-causing allele
A DNA molecule is a polymer made of __________. Ans✓✓✓
nucleotides
A gene is __________. Ans✓✓✓ the information for making a specific
amino acid sequence
A gradual, though still reversible, physiological adjustment that occurs
in response to an environmental change is called . Ans✓✓✓
acclimation
,A human skin cell, in prophase of mitosis, contains 46 chromosomes.
How many chromatids does it contain in total? Ans✓✓✓ A sister
chromatid is one of the two identical DNA molecules that make up a
duplicated chromosome. A cell in prophase of mitosis has already
undergone chromosomal duplication (DNA replication). Each
chromosome will consist of a pair of sister chromatids. Therefore, if the
cell has 46 chromosomes, there will be a total of 92 chromatids.
A human somatic (body) cell has __________ chromosomes. Ans✓✓✓
Different organisms have different numbers of chromosomes; human
somatic cells have 46 chromosomes, for example, whereas onion cells
have 16. The 46 human chromosomes exist as 23 pairs: 22 pairs of
autosomes and one pair of sex chromosomes (X and Y). Individuals that
have an XY are classified as biologically male, while individuals with XX
are biologically female.
a laboratory technique that produces an image of an individual's
chromosomes Ans✓✓✓ a karyotype
A new family moved into your neighborhood. They have four children,
all of whom are boys, and the mother is pregnant. What is the
probability that the new baby will be a boy? Ans✓✓✓ 50%
A person with an autosomal recessive disorder generally has how many
copies of the dominant allele? Ans✓✓✓ Zero
,A population has an allele frequency of 0.4 for the recessive allele and
0.6 for the dominant allele of a two-allele trait. According to the Hardy-
Weinberg theorem, what frequency would you predict for the recessive
phenotype? Ans✓✓✓ According to the Hardy-Weinberg theorem, the
frequency of the recessive phenotype is q2, where q is the frequency of
the recessive allele. If the recessive allele frequency (represented by q)
is equal to 0.4 and the dominant allele frequency (p) is 0.6 (or 1-0.4),
then the frequency of the recessive phenotype (q2), or 0.4 x 0.4, equals
0.16.
A researcher wanting to learn more about the interactions between
bees and the flowers they pollinate would study a/an . Ans✓✓✓ A
community is all the living organisms in an ecosystem, including bees
and the flowers they pollinate.
A sequence in DNA specifies __________. Ans✓✓✓ the amino acid
sequence of a protein
According to complementary base-pairing rules, for every G in the DNA
double helix, there must be __________. Ans✓✓✓ Every G (guanine)
nitrogenous base in DNA will be bonded to a C (cytosine).
The four nitrogenous bases of DNA are adenine, cytosine, guanine, and
thymine. In the DNA double helix, bases on one strand form pairs with
bases on the other strand according to the base-pairing rules: G pairs
with C (G-C or C-G), and A pairs with T (A-T or T-A). G-C base pairs have
, three hydrogen bonds holding them together; A-T base pairs have two
hydrogen bonds.
According to the biological species concept, a species is composed of
__________. Ans✓✓✓ individuals capable of interbreeding and
producing fertile offspring
According to the principle of segregation, the gametes of a
heterozygous individual will be ___________. Ans✓✓✓ 50% dominant
and 50% recessive
Airborne pollutants such as nitrogen oxides and sulfur oxides combine
with water vapor to produce acids that can fall to Earth as acid rain
(acid precipitation). Life in habitats such as freshwater lakes can be
threatened by acid rain because it . Ans✓✓✓ lowers the pH
All of the following are DNA bases except __________.
ANSWER
alanine
Unselected
adenine
Unselected
