Biology (MCQS)6

Biology Multiple Choice Questions

 Recombinant DNA is introduced in to host cell by means of
(A) phage
(B) vector
(C) bacteria
(D) enzyme

 In cystic fibrosis, the patient lacks a gene that codes for trans-membarene carrier of
(A) sodium ion
(B) carbon dioxide
(C) chloride ion
(D) potassium ion

 Which gene is located on linkage group number 11 in man
(A) sickle cell anemia
(B) leukemia
(C) albinism
(D) all of these

In birds the sex is determined by the type of
(A) sperm
(B) autosomes
(C) egg
(D) none of these

 In RNA nucleotides are attached by
(A) peptide bonds
(B) hydrogen bonds
(C) covalent bond
(D) phosphodiester bond

The chromosome is
(A) gene
(B) genes + protein
(C) DNA + genes
(D) gene + protein

 The human body contains water
(A) 60-80%
(B) 70-90%
(C) 75-95%
(D) 80-90%

Environment is a source of
(A) food
(B) shelter
(C) clothing
(D) all of these

Fresh water ecosystem covers
(A) 2%
(B) 1%
(C) 3%
(D) 5%

Foul smell in lake is produced by
(A) algae
(B) bacteria
(C) fungi
(D) all of these