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Set 9 Dna And Its Role In Heredity

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Question 1

(Multiple Choice)

Free
The rules formulated by Erwin Chargaff state that

A) A = T and G = C in any molecule of DNA.
B) A = C and G = T in any molecule of DNA.
C) A = G and C = T in any molecule of DNA.
D) A = U and G = C in any molecule of RNA.
E) DNA and RNA are made up of the same four nitrogenous bases.

Answer

Question 2

(Multiple Choice)

Free
The DNA isolated from a newly discovered virus is found to be 32 percent A,18 percent C,18 percent G,and 32 percent T.The base composition of the complementary DNA would be _______ percent A,_______ percent C,_______ percent G,and _______ percent T.

A) 32;17;32;19
B) 19;32;17;32
C) 17;32;32;19
D) 25;25;25;25
E) 32;18;18;32

Answer

Question 3

(Multiple Choice)

Free
A deoxyribonucleoside is a

A) deoxyribose plus a nitrogenous base.
B) sugar and a phosphate.
C) deoxyribose plus a nitrogenous base and a phosphate.
D) ribose plus a nitrogenous base.
E) nitrogenous base bonded at the 5' end to a sugar-phosphate backbone.

Answer