1.  In DNA sequencing, the primer
A.specifies where the sequence ends
B.specifies where the sequence begins
C.both (a) and (b)
D.generates variety of different sized fragments

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2. The chromosome of almost all bacteria is in the shape of
A.an open circle
B.helix
C.a closed circle
D.a linear chromosome

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3. In which of the following uracil is present?
A.RNA
B.DNA
C.Both (a) and (b)
D.None of these

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4. To which of the following adenine always binds?
A.Guanine
B.Cytosine
C.Thymine
D.None of these

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5. Guanine always binds to
A.cytosine
B.guanine
C.thymine
D.none of these

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6. The function of ribosomes within the cell is
A.to produce ATP
B.to ferment carbohydrates
C.to synthesize proteins
D.all of these

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7.  According to base pairing rules the bases of one strand match-up with the bases of the second strand of DNA and the two strands are said to be
A.complementary
B.oppositely charged
C.identical
D.none of these

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