Carbohydrates MCQs part-1 Biochemistry
#Biochemistry #Carbohydrates #mcq
Carbohydrates are carbon compounds that contain large quantities of hydroxyl groups.
The simplest carbohydrates also contain either an aldehyde moiety (these are termed polyhydroxyaldehydes) or a ketone moiety (polyhydroxyketones). All carbohydrates can be classified as either monosaccharides, oligosaccharides or polysaccharides.
Anywhere from two to ten monosaccharide units, linked by glycosidic bonds, make up an oligosaccharide.
Polysaccharides are much larger, containing hundreds of monosaccharide units.
The presence of the hydroxyl groups allows carbohydrates to interact with the aqueous environment and to participate in hydrogen bonding, both within and between chains.
Derivatives of the carbohydrates can contain nitrogens, phosphates and sulfur compounds.
Carbohydrates also can combine with lipid to form glycolipids or with protein to form glycoproteins.
In this video and its affiliated parts in the Biochemistry section, multiple-choice questions about carbohydrates structure, formulas, action, metabolic, catabolic, roles of carbohydrates, and many important questions that you may encounter in many exams.
MCQs:
1- The general formula of monosaccharides is
(A) CnH2nOn
(B) C2nH2On
(C) CnH2O2n
(D) CnH2nO2n
2. The general formula of polysaccharides is:
(A) (C6H10O6)n
(B) (C6H12O5)n
(C) (C6H10O5)n
(D) (C6H20O6)n
3- The most important epimer of glucose is:
(A) Xylose
(B) Fructose
(C) Arabinose
(D) Galactose
4- The pentose sugar present mainly in the heart muscle is:
(A) Lyxose
(B) Ribose
(C) Arabinose
(D) Xylose
5- The sugar found in DNA is:
(A) Xylose
(B) Ribose
(C) Deoxyribose
(D) Ribulose
6- The sugar found in RNA is:
(A) Deoxyribose
(B) Ribose
(C) Ribulose
(D) Erythrose
7- Sucrose consists of:
(A) Glucose + glucose
(B) Glucose + fructose
(C) Glucose + galactose
(D) Glucose + mannose
8- Glucose on oxidation does not give:
(A) Glycoside
(B) Glucosaccharic acid
(C) Gluconic acid
(D) Glucuronic acid
9- Hyaluronic acid is found in:
(A) Mouth
(B) Brain
(C) Abdomen
(D) Joints
10- α–D–Glucuronic acid is present in:
(A) Hyaluronic acid
(B) Chondroitin sulphate
(C) Heparin
(D) All of these
11- Lactate formed in muscles can be utilised through:
(A) Cori’s cycle
(B) Glucose-alanine cycle
(C) Rapoport-Luebeling cycle
(D) Citric acid cycle
12- Glucose-6-phosphatase is not present in:
(A) Liver and kidneys
(B) Kidneys and muscles
(C) Kidneys and adipose tissue
(D) Muscles and adipose tissue
13- Fructose-2, 6-biphosphate is formed by the action of:
(A) Phosphofructokinase-1
(B) Phosphofructokinase-2
(C) Fructose biphosphate isomerase
(D) Fructose-1, 6-biphosphatase
14- Gluconeogenesis is decreased by:
(A) Glucagon
(B) Epinephrine
(C) Insulin
(D) Glucocorticoids
15- Active uptake of glucose is inhibited by:
(A) Ouabain
(B) Phlorrizin
(C) Digoxin
(D) Alloxan
16- Cori’s cycle transfers:
(A) Glucose from muscles to liver
(B) Lactate from muscles to liver
(C) Lactate from liver to muscles
(D) Pyruvate from liver to muscles
17- The general test for detection of
carbohydrates is:
(A) Iodine test
(B) Barfoed test
(C) Molisch test
(D) Osazone test
18- ADH test is based on the measurement of:
(A) Specific gravity of urine
(B) Concentration of urea in urine
(C) Concentration of urea in blood
(D) Volume of urine in ml/minute
19- Glycogen synthetase activity is depressed by:
(A) Glucose
(B) Insulin
(C) Cyclic AMP
(D) Fructokinase
20- The number of ATP produced in the succinate dehydrogenase step is:
(A) 1
(B) 2
(C) 3
(D) 4
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#carbohydrates #biochemistry #mcq #shorts
music in this video:
Killing Time by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 License. [ Ссылка ]
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