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Advanced Biology
Test Description: Chapter 10 Test Review
Instructions: Answer all questions to get your test result.
1) DNA replication
A
uses each strand of a DNA molecule as a template for the creation of a new strand.
B
begins when two DNA molecules join together to exchange segments.
C
occurs through the addition of nucleotides to the end of the parental DNA molecule.
D
results in the formation of four new DNA strands.
2) Which of the following statements regarding DNA is false?
A
One DNA molecule can include four different nucleotides in its structure.
B
DNA uses the nitrogenous base uracil.
C
DNA uses the sugar deoxyribose.
D
DNA molecules have a sugar-phosphate backbone.
3) When one DNA molecule is copied to make two DNA molecules, the new DNA contains
A
50% of the parent DNA.
B
100% of the parent DNA
C
75% of the parent DNA.
D
none of the parent DNA.
4) Why does a DNA strand grow only in the 5' to 3' direction?
A
because DNA polymerases can only add nucleotides to the 3' end of the growing molecule
B
because DNA polymerases can only add nucleotides to the 5' end of the growing molecule
C
because DNA polymerase requires the addition of a starter nucleotide at the 5' end
D
because the DNA molecule only unwinds in the 5' to 3' direction
5) The transfer of genetic information from DNA to RNA is called
A
translation.
B
initiation.
C
elongation.
D
transcription.
6) Which of the following statements about eukaryotic RNA is true?
A
Introns are added to the RNA.
B
The modified RNA molecule is transported into the nucleus.
C
Exons are spliced together.
D
A small cap of extra nucleotides is added to both ends of the RNA.
7) Which of the following takes place during translation?
A
DNA replication
B
the conversion of genetic information from DNA nucleotides into RNA nucleotides
C
the conversion of genetic information from the language of proteins to the language of enzymes
D
the conversion of genetic information from the language of nucleic acids to the language of proteins
8) Which of the following statements regarding the flow of genetic information is false?
A
Polypeptides form proteins that determine the appearance and function of the cell and organism.
B
Eukaryotic mRNA is processed in several ways before export out of the nucleus.
C
Ribosomes function as factories that coordinate the functioning of mRNA and tRNA.
D
Transcription occurs in the cytoplasm of eukaryotic cells.
9) A protein coat enclosing a viral genome is known as a(n)
A
capsid.
B
capsule.
C
prophage.
D
envelope.
10) Which of the following features characterizes the lytic cycle of a viral infection?
A
The virus reproduces outside of the host cell.
B
The viral genes typically remain inactive once they are inside the host cell.
C
The cycle typically leads to the lysis of the host cell.
D
The cycle typically ends when the host bacterium divides.
11) Which of the following statements is false?
A
Sometimes an environmental signal can trigger a switchover from the lysogenic to the lytic cycle.
B
The lysogenic cycle always occurs inside of host cells.
C
Some prophage genes can cause the transformation of a nonpathogenic bacterium into a form that causes human disease.
D
The lysogenic cycle typically results in the rapid lysis of all infected cells.
12) Which of the following statements about the treatment or prevention for a prion infection is true?
A
Preventative vaccines have recently been shown to be effective in preventing prion infections.
B
There is no known treatment or cure for prion infections.
C
Antibiotic therapies such as penicillin are very effective cures.
D
High doses of anti-inflammatory drugs such as ibuprofen reduce the symptoms of prion infections.
13) Conjugation, transformation, and transduction are all ways that bacteria
A
increase their genetic diversity.
B
increase the amount of RNA in the cytoplasm.
C
reduce their DNA content.
D
alter their oxygen requirements.
*select an answer for all questions
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