- A drug which prevents uric acid synthesis
by inhibiting the enzyme xanthine
oxidase is
(A) Aspirin (B) Allopurinol
(C) Colchicine (D) Probenecid - Which of the following is required for
crystallization and storage of the
hormone insulin?
(A) Mn++ (B) Mg++
(C) Ca++ (D) Zn++ - Oxidation of which substance in the body
yields the most calories
(A) Glucose (B) Glycogen
(C) Protein (D) Lipids - Milk is deficient in which vitamins?
(A) Vitamin C (B) Vitamin A
(C) Vitamin B2 (D) Vitamin K - Milk is deficient of which mineral?
(A) Phosphorus (B) Sodium
(C) Iron (D) Potassium - Synthesis of prostaglandinsis is inhibited
by
(A) Aspirin (B) Arsenic
(C) Fluoride (D) Cyanide - HDL is synthesized and secreted from
(A) Pancreas (B) Liver
(C) Kidney (D) Muscle - Which are the cholesterol esters that enter
cells through the receptor-mediated
endocytosis of lipoproteins hydrolyzed?
(A) Endoplasmin reticulum
(B) Lysosomes
(C) Plasma membrane receptor
(D) Mitochondria - Which of the following phospholipids is
localized to a greater extent in the outer
leaflet of the membrane lipid bilayer?
(A) Choline phosphoglycerides
(B) Ethanolamine phosphoglycerides
(C) Inositol phosphoglycerides
(D) Serine phosphoglycerides - All the following processes occur rapidly
in the membrane lipid bilayer except
(A) Flexing of fatty acyl chains
(B) Lateral diffusion of phospholipids
(C) Transbilayer diffusion of phopholipids
(D) Rotation of phospholipids around their long
axes - Which of the following statement is
correct about membrane cholesterol?
(A) The hydroxyl group is located near the centre
of the lipid layer
(B) Most of the cholesterol is in the form of a
cholesterol ester
(C) The steroid nucleus form forms a rigid। D) The hydrocarbon chain of cholesterol projects into the extracellular fluid - Which one is the heaviest particulate component of the cell?(A) Nucleus (B) Mitochondria(C) Cytoplasm (D) Golgi apparatus
- Which one is the heaviest particulate
component of the cell?
(A) Nucleus (B) Mitochondria
(C) Cytoplasm (D) Golgi apparatus - Which one is the largest particulate of the
cytoplasm?
(A) Lysosomes
(B) Mitochondria
(C) Golgi apparatus
(D) Entoplasmic reticulum - The degradative Processess are categorized
under the heading of
(A) Anabolism (B) Catabolism
(C) Metabolism (D) None of the above - The exchange of material takes place
(A) Only by diffusion
(B) Only by active transport
(C) Only by pinocytosis
(D) All of these - The average pH of Urine is
(A) 7.0 (B) 6.0
(C) 8.0 (D) 0.0 - The pH of blood is 7.4 when the ratio
between H2CO3 and NaHCO3 is
(A) 1 : 10 (B) 1 : 20
(C) 1 : 25 (C) 1 : 30 - The phenomenon of osmosis is opposite
to that of
(A) Diffusion (B) Effusion
(C) Affusion (D) Coagulation - The surface tension in intestinal lumen
between fat droplets and aqueous
medium is decreased by
(A) Bile Salts (B) Bile acids
(C) Conc. H2SO4 (D) Acetic acid - Which of the following is located in the
mitochondria?
(A) Cytochrome oxidase
(B) Succinate dehydrogenase
(C) Dihydrolipoyl dehydrogenase
(C) All of these - The most active site of protein synthesis
is the
(A) Nucleus (B) Ribosome
(C) Mitochondrion (D) Cell sap - 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 - Mitochondrial DNA is
(A) Circular double stranded
(B) Circular single stranded
(C) Linear double helix
(D) None of these - 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 - The cellular organelles called “suicide
bags” are
(A) Lysosomes (B) Ribosomes
(C) Nucleolus (D) Golgi’s bodies - From the biological viewpoint, solutions
can be grouped into
(A) Isotonic solution
(B) Hypotonic solutions
(C) Hypertonic solution
(D) All of these - Bulk transport across cell membrane is
accomplished by
(A) Phagocytosis (B) Pinocytosis
(C) Extrusion (D) All of these - 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
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