Download Ch 9 Review WS

Chapter 9 Review WS
Name _____________________________
Period _____ Date ___________
Write the proper term on the line next to the matching description.
Vaccine
Bacteriophages
Nucleotide
Deoxyribose
Adenine
Guanine
Cytosine
Thymine
Purines
Pyrimidines
Helicases
DNA polymerases
Replication forks
Eukaryotic DNA
Bacterial DNA
1) __________________ A nitrogen base that forms hydrogen bonds with cytosine.
2) __________________ A virus that infects bacteria.
3) __________________ A long DNA molecule.
4) __________________ A substance that is introduced into the body to produce
immunity.
5) __________________ Enzymes that open up the double helix by breaking the
hydrogen bonds that link complementary bases.
6) __________________ A class of organic molecules, each having a single ring of
carbon and nitrogen atoms.
7) __________________ A circular DNA molecule.
8) __________________ A nitrogen base that forms hydrogen bonds with guanine.
9) __________________ Enzymes that move along each of the DNA strands during
replication, adding nucleotides to the exposed bases.
10) __________________ A nitrogen base that forms hydrogen bonds with thymine.
11) __________________ A class of organic molecules, each having a double ring of
carbon and nitrogen atoms.
12) __________________ Portions of DNA where the double helix separates during
DNA replication.
13) __________________ A five-carbon sugar.
14) __________________ Consists of a phosphate group, a sugar molecule, and a
nitrogen base.
15) __________________ A nitrogen base that forms hydrogen bonds with adenine.
16) _____ A vaccine is made from killed or _____________ microorganisms.
a. Transformed
b. Radio-active
c. Weakened
d. Virulent
17) _____ A microorganism that is able to cause disease is called
a. A vaccine
b. Virulent
c. Transformed
d. A bacteria
18) _____ A change in phenotype caused when bacterial cells take up foreign genetic
material is called
a. Transformation
b. Complementary
c. Virulentation
d. Vaccination
19) _____ In 1928, the experiments of Frederick Griffith demonstrated transformation of
a.
b.
c.
d.
R bacteria into S bacteria
S bacteria into R bacteria
Heat-killed S bacteria into R bacteria.
S bacteria into heat-killed R bacteria.
20) _____ Until 1952, many scientist thought genetic material was composed of protein
because
a.
b.
c.
d.
Protein had been identified in bacteria.
Proteins were involved in so many other aspects of cell function.
It was known that proteins could replicate.
Mendel had isolated proteins in his heredity experiments.
21) _____ In 1952, Alfred Hershey and Martha Chase determined that genetic material
is made of DNA by using
a. E. Coli bacteria
b. Radioactive labels
c. T2 bacteriophage
d. All of the above
22) _____ In 1953, who built the first model of DNA?
a. Hershey and Chase
b. Watson and Crick
c. Griffith and Avery
d. Wilkins and Franklin
23) _____ Each nucleotide in a DNA molecule consists of a
a.
b.
c.
d.
Sulfur group, a five-carbon sugar, and a nitrogen base.
Phosphate group, a six-carbon sugar, and a nitrogen base.
Phosphate group, a five-carbon sugar, and an oxygen base.
Phosphate group, a five-carbon sugar, and a nitrogen base.
24) _____ The full name of DNA is
a. Ribonucleic acid
b. Deoxyribonucleic acid
c. Deoxyribose
d. Nucleotides
25) _____ In the diagram, what is designated with the letter A?
a.
b.
c.
d.
A nitrogen base
Sugar-phosphate backbone
A glucose molecule
A hydrogen bond
26) _____ In the diagram, what is designated with the letter B?
a.
b.
c.
d.
A nitrogen base
Sugar-phosphate backbone
A glucose molecule
A hydrogen bond
27) _____ In the diagram, what is designated with the letter C?
a.
b.
c.
d.
A nitrogen base
5-carbon sugar molecules
Phosphate groups
A hydrogen bond
28) _____ Purines and pyrimidines differ in that
a. Purines have a single ring of carbon and nitrogen, whereas
pyrimidines have a double ring.
b. Purines have no nitrogen in their structure.
c. Pyrimidines have no nitrogen in their molecular structure.
d. Purines have a double ring of carbon and nitrogen, where as
pyrimidines have a single ring.
29) _____ Chargaff’s observations about the ratios of base pairs helped to establish the
a. Structure of DNA
b. Process of DNA coiling
c. Base-pairing rules
d. Double helix model
30) _____ The process of directing a beam of X-rays at an object and collecting the
scatter pattern on a piece of film is called
a. X-ray definition
b. X-ray probing
c. X-ray diffraction
d. X-ray distinction
31) _____ Maurice Wilkins and Rosalind Franklin worked to develop
a.
b.
c.
d.
Base-pairing rules
A model of the structure of DNA
X-ray diffraction photographs
Transformation experiments
32) _____ The work of Chargaff, Wilkins and Franklin formed the basis for
a.
b.
c.
d.
Watson and Crick’s DNA model
Hershey and Chase’s work on bacteriophages
Avery’s work on transformation.
Griffith’s discovery of transformation.
33) _____ The sequence of bases on one strand of DNA determines the sequence of
bases on the other strand. They are called
a. Double helix
b. Complementary
c. Sequential
d. Matching
34) _____ Complimentary strands of DNA are held together by
a.
b.
c.
d.
Hydrogen bonds
Covalent bonds
Ionic bonds
Both hydrogen and ionic bonds
35) _____ If one strand of DNA reads AGACCT, the other strand will read
a. TCTTGA
b. AGACCT
c. TCTGGA
d. CTCAAG
36) _____ DNA is replicated before
a. Crossing-over
b. Cell death
c. Cell division
d. The G1 phase
37) _____ During replication, DNA is proofread and corrected by
a. Helicase
b. Polymerase
c. Replication forks
d. Ligase
38) _____ At the end of the replication process, each of the two new DNA molecules is
composed of
a.
b.
c.
d.
Two new DNA strands.
One new and one original DNA strand.
One new and one mutated DNA strand.
Two original DNA strands.
39) _____ The purpose of multiple replication forks is to
a.
b.
c.
d.
Increase the possibilities created.
Replicate more strands than just two at a time.
Slow down the rate of replication.
Increase the rate of replication.
40) _____ With multiple replication forks working in concert, an entire human
chromosome can be replicated in about
a. 8 hours
b. 33 days
c. 24 hours
d. 8 days