Biology Mcqs

rRNA constitutes ____________% of the total cellular RNA?

A. 3-4 %
B. 10-20%
C. 80%
D. 90%

Genes will not be found in gene pairs in the_____________?

A. Muscle cell of worm
B. Uterine cells of dog
C. Sperm cells of frog
D. Guard cells of leaf

Most of the cellular secretions are ________ in nature?

A. Glycolipids
B. Glycoproteins
C. Nucleohistones
D. Proteins

Which one of the following stage preceeds mitosis during cell cycle?

A. G1 phase
B. S phase
C. G2 phase
D. M phase

Which one of the following syndrome is the result of meiotic non dysjunction?

A. Klinefelters syndrome
B. Turners syndrome
C. Downs syndrome
D. All of these

Which one of the following is correct sequence of stages of prophase 1 of meiosis

A. Diakinesis diplotene pachytene leptotene zygotene
B. Zygotene leptotene pachytene diplotene diakinesis
C. Leptotene zygotene pachytene diplotene diakinesis
D. Pachytene leptotene diplotene zygotene diakinesis

Interconversion of carbohydrates proteins and lipids in living cells are an example of____________?

A. Coordinated catabolic activities
B. Coordinated anabolic activities
C. Both A and B
D. Any one

Non polar organic molecules are ___________ in water?

A. Soluble
B. Insoluble
C. Partially soluble
D. Depends upon condition

In humans the number of tetrads formed during mitosis is___________?

A. 23
B. 46
C. 0
D. 4

The survival of an animal depends upon its ability to take some from its environment____________?

A. Chemicals
B. Hydrocarbons
C. Organic molecules
D. Inorganic molecules