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Home⇒ Medical Science⇒ Biochemistry⇒ Carbohydrate
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ Pyruvate is initially converted to which of the following in the gluconeogenesis? Oxaloacetate [other wrong options] [Discuss in forum] Glycerol Phosphoenol pyruvate Acetyl CoA |
Q2 ⇒ Which of the following would be considered a part of metabolism? All of the above [other wrong options] [Discuss in forum] Biosynthetic pathways that build DNA Catabolic pathways that break down complex carbohydrates The capture of light energy for use in making glucose |
Q3 ⇒ Glycolysis reactions take place in cytoplasm [other wrong options] [Discuss in forum] cell membrane cell wall plasmids |
Q4 ⇒ How many ATP equivalents per mole of glucose input are required for gluconeogenesis? 6 [other wrong options] [Discuss in forum] 2 8 4 |
Q5 ⇒ Which of the following does not occur during gluconeogenesis? The conversion of pyruvate to phosphoenolpyruvate (PEP) [other wrong options] [Discuss in forum] The carboxylation of pyruvate to oxaloacetate The decarboxylation of oxaloacetate to phosphoenolpyruvate The conversion of PEP to fructose bisphosphate |
Q6 ⇒ Cellulose fibers resemble with the protein structure in the form of β-sheets [other wrong options] [Discuss in forum] α-helices β-turns None of these |
Q7 ⇒ Two major products of pentose phosphate pathway are nicotinamide adenine dinucleotide and ribose 5-phosphate [other wrong options] [Discuss in forum] flavine adenine dinuclueotide and glucose 5-phosphate FAD and CoA NADPH and NAD |
Q8 ⇒ Citric acid accumulation would both (b) and (c) [other wrong options] [Discuss in forum] stimulate phosphofructokinase activity stimulate fructose 1,6 diphosphatase activity inhibit phosphofructokinase activity |
Q9 ⇒ Aldolases splits fructose 1,6 biphosphate into glyceraldehyde 3- phosphate and dihydroxyacetone phosphate [other wrong options] [Discuss in forum] glyceraldehyde 3- phosphate dihydroxyacetone phosphate none of the above |
Q10 ⇒ The hormones, glucagon and epinephrine, stimulate glycogen breakdown to G-6-P indirectly, by first stimulating adenylate cyclase to make cAMP [other wrong options] [Discuss in forum] only in the liver using ATP as the phosphoryl donor directly, by binding to glycogen phosphorylase |
Q11 ⇒ Fructose is metabolized by both (a) and (b) [other wrong options] [Discuss in forum] fructose 1-phosphate pathway fructose 6-phosphate pathway glyceraldehyde 3-phosphate pathway |
Q12 ⇒ The main site for gluconeogenesis is liver [other wrong options] [Discuss in forum] kidney brain muscle |
Q13 ⇒ The conversion of pyruvate to oxaloacetate requires biotin [other wrong options] [Discuss in forum] involves the fixation of carbon dioxide occurs in the mitochondria all of the above |
Q14 ⇒ a-amylose is similar to α-helices [other wrong options] [Discuss in forum] β-sheets β-turned coils the hydrophobic core |
Q15 ⇒ Which of the following is not a disaccharide? Amylose [other wrong options] [Discuss in forum] Cellobiose Lactose None of these |
Q16 ⇒ The multistep pathways of metabolism are efficient because they locate all of the enzymes for a pathway in the same place within the cell [other wrong options] [Discuss in forum] use the same substrate for all of the enzymes in the pathway use the same enzyme for all of the substrates in the pathway spread the enzymes for a pathway into several different organelles |
Q17 ⇒ Regulated metabolic pathways are all of these [other wrong options] [Discuss in forum] compartmentalized in eukaryotes usually regulated at the first step committed after the first step |
Q18 ⇒ The process not involved in the formation of glucose by gluconeo-genesis is the conversion of oxaloacetate to glucose [other wrong options] [Discuss in forum] the conversion of lactate to pyruvate the dephosphorylation of glucose-6-phosphate all of the above |
Q19 ⇒ The production or break down of __________ is often coupled with the metabolic reactions of biosynthesis and catabolism. ATP [other wrong options] [Discuss in forum] aspirin DNA CO2 |
Q20 ⇒ Gluconeogenesis uses 4 ATPs and 2 GTPs per glucose [other wrong options] [Discuss in forum] 3 ATPs and 2 GTPs per glucose 2 ATPs and 1 GTPs per glucose 3 ATPs and 3 GTPs per glucose |
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