Biology: The Dynamics of Life, California Edition

Section 1: DNA: The Molecule of Heredity

DNA: The Molecule of Heredity

1.
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According to the data in the table, which of these statements is true?
A)There is always more T than A in each of the DNA samples.
B)The total amounts of A, T, G, and C in each DNA sample add to about 100%.
C)C is represented in the smallest percentage for each of the DNA samples.
D)C and G together compose at least 50% of each of the DNA samples.
2.
Thymine and cytosine are also called __________.
A)pyrimidines
B)isotopes
C)viruses
D)purines
3.
Which of these sequences correctly describes how DNA is copied?
A)separation of strands—bonding of bases—replication—base pairing
B)replication—bonding of bases—separation of strands—base pairing
C)replication—bonding of bases—base pairing—separation of strands
D)separation of strands —base pairing—bonding of bases—replication
4.
Which of these correctly matches with the nitrogenous base adenine in DNA?
A)guanine
B)thymine
C)cytosine
D)adenine
5.
Which of these DNA strands would the DNA strand A-T-G-C-C-G-T-T match to?
A)T-T-G-C-C-G-T-A
B)C-G-T-A-A-T-G-G
C)G-C-A-T-T-A-C-C
D)T-A-C-G-G-C-A-A
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