Description : Protoporphyria (erythrohepatic) is characterized by the deficiency of (A) ALA synthase (B) ALA hydratase (C) Protophyrinogen oxidae (D) Ferrochelatase
Last Answer : Answer : D
Description : Hereditary coproporphyria is caused due to deficiency of (A) Protoporphyrinogen oxidase (B) ALA synthase (C) ALA dehydratase (D) Coproporphyrinogen oxidase
Description : The probable cause of porphyria cutanea tarda is deficiency of (A) Uroporphyrinogen oxidase (B) Coproporphyrinogen oxidase (C) Protoporphyrinogen oxidase (D) Uroporphyrinogen I synthase MINERAL METABOLISM 185
Last Answer : Answer : A
Description : The enzyme involved in congenial erythropoietic porphyria is (A) Uroporphyrinogen I synthase (B) Uroporphyrinogen III cosynthase (C) Protoporphyrinogen oxidase (D) Ferrochelatase
Last Answer : Answer : B
Description : Acute intermittent porphyria (paraoxymal porphyria) is caused due to deficiency of (A) Uroporphyrinogen I synthase (B) ALA synthase (C) Coproporphyrinogen oxidase (D) Uroporphyrinogen decarboxylase
Description : Many xenobiotics (A) Increase hepatic ALA synthase (B) Decrease hepatic ALA sythase (C) Increase hepatic ALA dehydrase (D) Decrease hepatic ALA dehydrase
Description : The synthesis of heme from protophyrin III is catalysed by the enzyme: (A) ALA synthase (B) Ferroreductase (C) Ferrooxidase (D) Ferrochelatase
Description : Conversion of the linear tetrapyrrole hydroxymethylbilane to uroporphyrinogen III (A) Occurs spontaneously (B) Catalysed by uroporphyrinogen I synthase (C) Catalysed by uroporphyrinogen III cosynthase (D) Catalysed by combined action of uroporphyrinogen I synthase and uroporphyrinogen III cosynthase
Description : The condensation of 2 molecules of δ-aminolevulinate dehydratase contains (A) ALA synthase (B) ALA hydratase (C) Uroporphyrinogen synthase I (D) Uroporphyrinogen synthase III
Description : In mammalian liver the rate controlling enzyme in porphyrin biosynthesis is (A) ALA synthase (B) ALA hydratase (C) Uroporphyrinogen I synthase (D) Uroporphyrinogen III cosynthase
Description : A regulator of the enzyme glucogen synthase is (A) Citric Acid (B) Pyruvate (C) Glucose-6-PO4 (D) GTP
Last Answer : Answer : C
Description : Brown adipose tissue is (A) A prominent tissue in human (B) Characterised by high content of mitochondria (C) Associated with high activity of ATP synthase (D) Characterised by low content of cytochromes
Description : The rate limiting reaction in the lipogenic pathway is (A) Acetyl-CoA carboxylase step (B) Ketoacyl synthase step (C) Ketoacyl reductase step (D) Hydratase step
Description : In fatty acids synthase of both bacteria and mammals, ACP (acyl carrier protein) contain the vitamin: (A) Thiamin (B) Pyridoxine (C) Riboflavin (D) Pantothenic acid
Description : The fatty acid synthase complex catalyses (A) 4 sequential enzymatic steps (B) 6 sequential enzymatic steps (C) 7 sequential enzymatic steps (D) 8 sequential enzymatic steps
Description : The protein, which is in fact a multifunctional enzyme complex in higher organism is (A) Acetyl transacylase (B) Malonyl transacylase (C) 3-Hydroxy acyl-ACP dehyratase (D) Fatty acid synthase
Description : The best known cause of galactosemia is the deficiency of (A) Galactose 1-phosphate and uridyl transferase (B) Phosphoglucomutase (C) Galactokinase (D) Lactose synthase
Description : Her’s disease is characterized by deficiency of (A) Muscle phosphorylase (B) Liver phosphorylase (C) Debranching enzyme (D) Glycogen synthase
Description : Pompe ’s d isease is caused due to deficiency of (A) Lysosomal α-1→4 and 1→6-glucosidase (B) Glucose-6-phosphatase (C) Glycogen synthase (D) Phosphofructokinase
Description : Cori disease (Limit dextrinosis) is caused due to absence of (A) Branching enzyme (B) Debranching enzyme (C) Glycogen synthase (D) Phosphorylase
Description : The hormone activating the glycogen synthase activity is (A) Insulin (B) Glucagon (C) Epinephrine (D) ACTH
Description : Action of glycogen synthase is inhibited by (A) Insulin (B) Glucose (C) Mg2+ (D) Cyclic AMP
Description : Allosteric activator of glycogen synthase is (A) Glucose (B) Glucose-6-Phosphate (C) UTP (D) Glucose-1-phosphate
Description : In glycogenesis a branch point in the molecule is established by the enzyme (A) Amylo[1→ 4][1→ 6] transglucosidase (B) α [1→ 4] α [1→ 4] Glucan transferase (C) Amylo [1→ 6] glucosidase (D) Glycogen synthase
Description : From arachidonate, synthesis of prostaglandins is catalysed by (A) Cyclooxygenase (B) Lipoxygenase (C) Thromboxane synthase (D) Isomerase
Description : The enzyme acyl-CoA synthase catalyses the conversion of a fatty acid of an active fatty acid in the presence of (A) AMP (B) ADP (C) ATP (D) GTP
Description : A regulator of the enzyme Glycogen synthase is (A) Citric acid (B) 2, 3 bisphosphoglycerate (C) Pyruvate (D) GTP
Last Answer : C
Description : One of the following statement is correct: (A) Glycogen synthase ‘a’ is the phosphorylated (B) cAMP converts glycogen synthase b to ‘a’ (C) Insulin converts glycogen synthase b to a (D) UDP glucose molecules interact and grow into a Glycogen tree
Description : One of the following enzymes does not change glycogen synthase a to b. (A) Glycogen synthase kinases 3, 4, 5 (B) Ca2+ calmodulin phosphorylase kinase (C) Ca2+ calmodulin dependent protein kinase (D) Glycogen phosphorylase a
Last Answer : D
Description : What is HMG CoA synthase?
Last Answer : It is the rate-limiting-enzyme in ketogenesis pathway.
Description : (A) Name the gland shown in the diagram (B) namet he hormones secreted by this gland (C) which element is essential for the normal rate of hormone syn
Last Answer : (A) Name the gland shown in the diagram (B) namet he hormones secreted by this gland (C) ... for the normal rate of hormone synthesis in this gland?
Description : Why syn. generators are used for the production of electricity?
Last Answer : Synchronous machines have capability to work on different power factor (or say different imaginary power varying the field emf. Hence syn. generators re used for the production of electricity.
Description : Why Syn. Generators Are Used For The Production Of Electricity?
Last Answer : Synchronous machines have capability to work on different power factor(or say different imaginary pow varying the field emf. Hence syn. generators are used for the production of electricity.
Last Answer : A:synchronous machines have capability to work on different power factor. Hence syn. generators are used for the production of electricity.
Description : Number of chromosomes in Down's syn- drome is?
Last Answer : 47
Description : Which of the following system calls results in the sending of SYN packets? a. socket b. bind c. listen d. connect
Last Answer : d. connect
Description : The hydroboration-oxidation reaction can be characterized as the _________ to an alkene. (a) anti-Markovnikov syn addition of water (b) anti-Markovnikov anti addition of water (c) Markovnikov syn addition of water (d) Markovnikov anti addition of water
Last Answer : anti-Markovnikov syn addition of water
Description : _______ is a form of denial of service attack in which a hostile client repeatedly sends SYN packets to every port on the server using fake IP addresses. a) Cybergaming crime b) Memory shaving c) Syn flooding d) Software piracy e) None of these
Last Answer : a) Cybergaming crime
Description : Which Nmap scan is does not completely open a TCP connection? A. SYN stealth scan B. TCP scan C. XMAS tree scan D. ACK scan
Last Answer : A. SYN stealth scan
Description : Which of the following control fields in TCP header is used to specify the sender has no more data to transmit? (A) FIN (B) RST (C) SYN (D) PSH
Last Answer : (A) FIN
Description : When the electrons pass from one carrier to another via complex-I to IV in the electron transport chain, they are coupled to ATP synthase (complex-V)
Last Answer : When the electrons pass from one carrier to another via complex-I to IV in the electron ... production of ATP from ADP and inorganic phosphate.
Description : How manys ions have to enter in order for ATP synthase to have enough energy to make ATP?
Last Answer : three H+ protons
Description : What is the role if ATP synthase in photosynthesis?
Last Answer : What is the answer ?
Description : In light reaction, plastoquinone facilitates the transfer of electrons from (a) PS-II to Cytb6f complex (b) Cytb6f complex to PS-I (c) PS-I to NADP+ (d) PS-I to ATP synthase.
Last Answer : (a) PS-II to Cytb6f complex
Description : In the TCA cycle, at which of the following enzyme-catalyzed steps, incorporation of elements of water into an intermediate of the cycle takes place : (A) Citrate synthase (B) Aconitase (C) Maleate dehydrogenase (D) Succinyl Co-A synthase
Last Answer : (C) Maleate dehydrogenase
Description : Sulfonylurea herbicides inhibits a). ALS b). EPSP synthase c). PSI d). PSII
Last Answer : a). ALS
Description : Herbicides inhibiting Acetolactate Synthase (ALS) associated with making of leusine, isoleucine and valine a). Ureas b). Sulfonylureas c). Chloracitamides d). Bipyridilliums
Last Answer : b). Sulfonylureas
Description : The electron transport chain within the inner mitochondrial membrane creates a gradient of ____________ across the inner membrane which is utilized to drive the activity of ATP synthase and the generation of ATP.
Last Answer : Hydrogen (H+ ions) or protons