GRE Bio Chemistry Practice Test Paper

GRE Bio Chemistry MCQs Tests

1. Which one is the heaviest particulate component of the cell?
(A) Nucleus (B) Mitochondria
(C) Cytoplasm (D) Golgi apparatus
2. Which one is the largest particulate of the cytoplasm?
(A) Lysosomes
(B) Mitochondria
(C) Golgi apparatus
(D) Entoplasmic reticulum
3. The degradative Processess are categorized under the heading of
(A) Anabolism (B) Catabolism
(C) Metabolism (D) None of the above
4. The exchange of material takes place
(A) Only by diffusion
(B) Only by active transport
(C) Only by pinocytosis
(D) All of these
5. The average pH of Urine is
(A) 7.0 (B) 6.0
(C) 8.0 (D) 0.0
6. The pH of blood is 7.4 when the ratio between H2CO3and NaHCO3 is
(A) 1 : 10 (B) 1 : 20
(C) 1 : 25 (C) 1 : 30
7. The phenomenon of osmosis is opposite to that of
(A) Diffusion (B) Effusion
(C) Affusion (D) Coagulation
8. The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by
(A) Bile Salts (B) Bile acids
(C) Conc. H
2SO4 (D) Acetic acid
9. Which of the following is located in the mitochondria?
(A) Cytochrome oxidase
(B) Succinate dehydrogenase
(C) Dihydrolipoyl dehydrogenase
(D) All of these
10. The most active site of protein synthesis is the
(A) Nucleus (B) Ribosome
(C) Mitochondrion (D) Cell sap
11. The fatty acids can be transported into and out of mitochondria through
(A) Active transport
(B) Facilitated transfer
(C) Non-facilitated transfer
(D) None of these
12. Mitochondrial DNA is
(A) Circular double stranded
(B) Circular single stranded
(C) Linear double helix
(D) None of these
13. The absorption of intact protein from the gut in the foetal and newborn animals takes place by
(A) Pinocytosis (B) Passive diffusion
(C) Simple diffusion (D) Active transport
14. The cellular organelles called “suicide bags” are
(A) Lysosomes (B) Ribosomes
(C) Nucleolus (D) Golgi’s bodies
15. Bulk transport across cell membrane is accomplished by
(A) Phagocytosis (B) Pinocytosis
(C) Extrusion (D) All of these
16. The ability of the cell membrane to act as a selective barrier depends upon
(A) The lipid composition of the membrane
(B) The pores which allows small molecules
(C) The special mediated transport systems
(D) All of these
17. The sugar found in milk is
(A) Galactose (B) Glucose
(C) Fructose (D) Lactose
18. Invert sugar is
(A) Lactose (B) Sucrose
(C) Hydrolytic products of sucrose
(D) Fructose
19. Sucrose consists of
(A) Glucose + glucose
(B) Glucose + fructose
(C) Glucose + galactose
(D) Glucose + mannose
20. Which of the following is a non-reducing sugar?
(A) Isomaltose (B) Maltose
(C) Lactose (D) Trehalose