Biology Mcqs

Carbon atom is_____________?

A. Monovalent
B. Divalent
C. Trivalent
D. Tetravalent

Which one is an organic compound_____________?

A. CO2
B. Water
C. Lipids
D. HCI

Which chemical component has the greatest contribution in the total mammalian cell weight__________?

A. Proteins
B. Carbohydrate
C. Lipids
D. Water

The branch of biology which deals with the study of chemical compounds and the chemical processes in the fliving organisms is called_________________?

A. Chemistry
B. Biochemistry
C. Molocular biology
D. Both a and b

Which chemical component has the same % in bacterial as well as the mammalian cell_____________?

A. Water
B. Carbohydrate
C. Proteins
D. Lipids

Reactions in which simple substances are combined to form complex substances are called_____________?

A. Metabolic reactions
B. Catabolic reactions
C. Anabolic reactions
D. None of these

Which one is the basic element of organic compounds _________________?

A. Oxygen
B. Hydrogen
C. Sulphur
D. Carbon

The bond formed when two or more atoms complete their electron shells by sharing electrons is called_____________?

A. Ionic bond
B. Hydrogen bond
C. Covalent bond
D. Electrovalent bond

During digesting the phagocytosed food particles vesicles formed from fusion of phagocytic vacuole with the enzymes secreted by Golgi apparantus are called_______?

A. Lysosomes
B. Primary lysosomes
C. Secondary lysosomes
D. Food vacuole

Which of the following impart a red colour to Rose petals?

A. Chloroplast
B. Chlorophyll
C. Chromoplast
D. Leucoplast