Glencoe Biology

Chapter 12: Molecular Genetics

Standardized Test Practice-English

1
Hershey and Chase used a ____ to infect bacteria in their experiments.
A)yeast toxin
B)water molecule
C)non-viral molecule
D)bacteriophage
2
What caused the mouse to die in step D?

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A)bacteriorphage
B)S strain only
C)mix of R strain and dead S strain
D)radioactive bacteria
3
DNA ____ contain deoxyribose, phosphate, and nitrogenous bases.
A)carbon cells
B)ribose cells
C)nucleotides
D)purines
4
What do the molecules labeled A, C, G, and T represent in this DNA helix?

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A)nitrogenous bases
B)operons
C)messenger RNA
D)transfer RNA
5
What is this structure composed of?

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A)histones without DNA
B)DNA coiled around histones
C)DNA without histones
D)messenger RNA
6
This shows Griffith's transformation experiment. What did the experiment demonstrate?

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A)mice are immune to bacteria
B)strains of bacteria do not change form
C)bacteria cannot be killed by heating
D)strains of bacteria could change form
7
DNA strands separate and produce both parental DNA and new DNA during ____.
A)semiconservative replication
B)conservative replication
C)RNA binding
D)Okazaki binding
8
Polymerase synthesizes small segments of the DNA strand, which are called ____.
A)polymerase fragments
B)Okazaki fragments
C)helix fragments
D)strand pieces
9
What process does this picture show?

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A)formation of Okazaki fragments on leading strand
B)replication of a prokaryotic DNA
C)formation of Ozaki fragments on lagging strand
D)mutation of RNA
10
The coding of RNA by DNA in order to guide protein synthesis is known as the ____.
A)DNA factor
B)helix law
C)protein theory
D)central dogma
11
The synthesis of messenger RNA from template DNA is called ____.
A)transcription
B)intron processing
C)helix transfer
D)ribosomal transfer
12
What three types of RNA are found in living cells?
A)fragmented, helix, protein
B)messenger, ribosomal, transfer
C)protein, Okazaki, transfer
D)ribosomal, helix, radioactive
13
The ability to control which genes are expressed is called ____.
A)messenger control
B)helix response
C)external gene selection
D)gene regulation
14
A permanent change in a cell's DNA is called a (an) ____.
A)operon
B)mutation
C)RNA interface
D)homeobox gene
15
What ensures the correct timing of protein synthesis in eukaryotes?
A)point mutations and operons
B)mutation controllers and operons
C)transcription factors and RNA interfacing
D)regeneration and point mutations
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