1
MCQ (Single Correct Answer)

AIPMT 2009

Which of the following hormones contains iodine?
A
Testosterone
B
Adrenaline
C
Thyroxine
D
Insulin

Explanation

Thyroxine contains iodine
2
MCQ (Single Correct Answer)

AIPMT 2009

The segment of DNA which acts as the instrumental manual for the synthesis of the protein is
A
ribose
B
gene
C
nucleoside
D
nucleotide

Explanation

The DNA sequence that codes for a specific protein is called a Gene and thus every protein in a cell has a corrosponding gene.
3
MCQ (Single Correct Answer)

AIPMT 2008

Which of the following is an amine hormone?
A
Insulin
B
Progesterone
C
Thyroxine
D
Oxypurin

Explanation

Thyroxine is an amino hormone.
4
MCQ (Single Correct Answer)

AIPMT 2008

In DNA, the complimentary bases are
A
adenine and guanine; thymine and cytosine
B
uracil and adenine; cytosine and guanine
C
adenine and thymine; guanine and cytosine
D
adenine and thymine; guanine and uracil.

Explanation

DNA contains two types of nitrogeneous bases

Purine $$ \to $$ Adenine (A) and guanine (G)

Pyrimidine $$ \to $$ Cytosine (C) and thymine (T)

The purine and pyrimidine bases pair only in certain combination. Adenine pairs with thymine (A : T) by two hydrogen bonds and guanine with cytosine (G : C) by three hydrogen bonds.

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