Biology Mcqs

If a plasmolysed plant cell is placed in water the cell will___________?

A. Burst
B. Be Killed
C. Be deplasmolysed
D. Show no change in it

Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong____________?

A. Globular proteins
B. Fibrous Proteins
C. Both a and b
D. None of these

The food of hydra consists of___________?

A. Humus
B. Detritus
C. Dead microscopic animals
D. Small crustaceans

Which of the following are triploblastic and acoelomate?

A. Sponges
B. Annelida
C. Platyhelminthes
D. Aves

helical structure is kept by the formation of _________ bonds among amino acids molecules?

A. H bonds
B. Disulphide Bond
C. Ionic bond
D. Hydrophobic bonds

Which of the following occurs in anaerobic respiration but not in aerobic respiration?

A. Release of CO2
B. Reduction of NAD
C. Formation of ATP
D. Production of ethanol from acetaldehyde

Which of the following does not show quaternary structure____________?

A. Haemoglobin
B. Pepsin
C. Fibrin
D. Insulin

Which structural organization is most common in globular proteins____________?

A. Primary
B. Secondary
C. Tertiary
D. Quaternary

Amphoixus is a__________?

A. Chordate
B. Protochordate
C. Lower chordate
D. All of these

The simplest of oxygen producting photosynthetic organisms are____________?

A. Algae
B. Bacteria
C. Cyanobacteria
D. Chlamydomonas