Download Chapters 8-10

Bio101
Practice Quiz
Name___________________
(Chapters 8, 9, & 10)
Choose the alternative that best completes the statement or answers the question.
1. The creation of offspring carrying genetic information from a single parent is called
A) asexual reproduction.
B) sexual reproduction.
C) a life cycle.
D) regeneration.
E) spontaneous generation.
2. The genetic material (DNA) is copied (synthesized) during
A) cytokinesis.
B) G1.
C) S phase.
D) G2.
E) mitosis.
3. Looking into your microscope, you spot an unusual cell. Instead of the typical rounded
cell shape, the cell has a very narrow middle separating two bulging ends. It sort of looks
like the number 8! Then you realize that this cell is
A) undergoing cytokinesis.
B) in the S phase of interphase.
C) in the G1 phase of interphase.
D) in the G2 phase of interphase.
E) about to undergo mitosis.
4. Meiosis results in a change in chromosome number indicated by
A) 2n to 2n.
B) 2n to n.
C) n to 2n.
D) n to n.
E) 2n to 2n in diploid organisms, n to n in haploid.
5. During which phase of mitosis does the nuclear envelope re-form, the nucleoli reappear
and chromosomes decondense?
A) anaphase
B) metaphase
C) prophase
D) interphase
E) telophase
6. Following a cut or scrape, which process repairs your skin?
A) meiosis
B) meiosis and mitosis
C) mitosis
D) mitosis and apoptosis
E) apoptosis
7. Which of the following statements regarding sexual reproduction is true?
A) Sexual reproduction creates an individual that is a genetic copy of one parent.
B) Sexual reproduction generates greater genetic variation than asexual reproduction.
C) Sexual reproduction allows animals to expand their populations faster than
asexual reproduction.
D) Populations of organisms that reproduce through sexual reproduction generally
have difficulty adapting to changing environments.
E) Sexual reproduction produces 2n gametes.
8. Which of the following statements regarding genotypes and phenotypes is FALSE?
A) The genetic makeup of an organism constitutes its genotype.
B) An organism with two different alleles for a single trait is said to be heterozygous
for that trait.
C) Alleles are alternate forms of a gene.
D) An allele that is fully expressed is referred to as recessive.
E) The expressed physical traits of an organism are called its phenotype.
9. The alleles of a gene are found at ________ chromosomes.
A) the same locus on homologous mitochondrial
B) the same locus on heterologous
C) different loci on homologous
D) different loci on heterologous
E) the same locus on homologous
10. Dr. Smith's parents have normal hearing. However, Dr. Smith has an inherited form of
deafness. Deafness is a recessive trait that is associated with the abnormal allele d. The
normal allele at this locus, associated with normal hearing, is D. Dr. Smith's parents
could have which of the following genotypes?
A) DD and dd
B) dd and dd
C) Dd and Dd
D) DD and DD
E) Dd and DD
11. Which of the following genotypes indicates a heterozygous individual?
A) AB
C) Aa
B) AA
D) aa
E) AA bb
12.
The monomers of DNA and RNA are
A) amino acids.
B) monosaccharides.
C) nucleotides.
D) fatty acids.
E) nucleic acids.
13.
If one strand of DNA is CGGTAC, the corresponding strand would be
A) GCCTAG.
B) CGGTAC.
C) GCCAUC.
D) TAACGT.
E) GCCATG.
14.
Which of the following options best depicts the flow of information when a gene directs
the synthesis of a cellular component?
A) RNA → DNA → RNA → protein
B) DNA → RNA → protein
C) protein → RNA → DNA
D) DNA → amino acid → RNA → protein
E) DNA → tRNA → mRNA → protein
15.
The directions for each amino acid in a polypeptide are indicated by a codon that consists
of ________ nucleotide(s) in an RNA molecule.
A) 5
B) 4
C) 3
D) 2
E) 1
16.
Which of the following enzymes does HIV use to synthesize DNA on an RNA template?
A) ligase
B) RNA polymerase
C) terminator enzyme
D) reverse transcriptase
E) DNA convertase
17.
A base substitution mutation in a gene does not always result in a different protein.
Which of the following factors could account for this?
A) the fact that the mutation affects only the sequence of the protein's amino acids, so
the protein stays the same
B) the double-ring structure of adenine and guanine
C) a correcting mechanism that is part of the mRNA molecule
D) the fact that such mutations are usually accompanied by a complementary
deletion
E) the fact that some amino acids are specified from more than one codon