Biochemistry

The digestive enzymes of cellular compounds are confined to

(A) Lysosomes
(B) Ribosomes
(C) Peroxisomes
(D) Polysomes

The power house of the cell is

(A) Nucleus
(B) Cell membrane
(C) Mitochondria
(D) Lysosomes

Genetic information of nuclear DNA is transmitted to the site of protein synthesis by

(A) rRNA
(B) mRNA
(C) tRNA
(D) Polysomes

In mammalian cells rRNA is produced mainly in the

(A) Endoplasmic reticulum
(B) Ribosome
(C) Nucleolus
(D) Nucleus

Mature erythrocytes do not contain

(A) Glycolytic enzymes
(B) HMP shunt enzymes
(C) Pyridine nucleotide
(D) ATP

Enzymes catalyzing electron transport are present mainly in the

(A) Ribosomes
(B) Endoplasmic reticulum
(C) Lysosomes
(D) Inner mitochondrial membrane

Fatty acids can be transported into and out of cell membrane by

(A) Active transport

(B) Facilitated transport
(C) Diffusion
(D) Osmosis

The following substances are cell inclusions except

(A) Melanin
(B) Glycogen
(C) Lipids
(D) Centrosome

The following points about microfilaments are true except

(A) They form cytoskeleton with microtubules
(B) They provide support and shape
(C) They form intracellular conducting channels
(D) They are involved in muscle cell contraction

The Golgi complex

(A) Synthesizes proteins

(B) Produces ATP

(C) Provides a pathway for transporting chemicals

(D) Forms glycoproteins