Biology MCQs

1.Which one of the following is found in both DNA and messanger RNA?
A. Doublee helix structure
B. Ribose
C. Sugar-phosphate chain
D. Thymine

2. What is the advantage of DNA having two complementary strands?
A. Pairing can occur between chromatids
B. Transcription and replication can occur simultaneously
C. Semi-conservative replication is possible
D. Diploid cells can inherit DNA from both parents

3.The two pyrimidine bases most commonly found in DNA are
A. Uracil and thymine
B. Cytosine and uracil
C. Cytosine and thiamine
D. Cytosine and thymine

1.c

2.c

3.d