Description : Explain how during light reaction of photosynthesis, ATP synthesis is a chemiosmotic phenomenon. -Biology
Last Answer : answer:
Description : Read the following four statements, (i), (ii), (iii) and (iv) and select the right option having both correct statements. Statements : (i) Z scheme of light reaction takes place in presence of PSI only. (ii) Only PSI is ... and (iv) (b) (i) and (ii) (c) (ii) and (iii) (d) (iii) and (iv)
Last Answer : (a) (ii) and (iv)
Description : Synthesis of ATP and ADP and inorganic phoshate in presence of light is known as
Last Answer : Synthesis of ATP and ADP and inorganic phoshate in presence of light is known as
Description : The utilization of light energy to drive the synthesis of ATP is called as a. Photolysis b. Photophosphorylation c. Photosynthesis d. Respiration
Last Answer : Ans: C
Description : ATP synthesis during photosynthesis is termed as
Last Answer : ATP synthesis during photosynthesis is termed as A. Phosphorylation B. Oxidative phosphorylation C. Photophosphorylation D. Photorespiration
Description : All of the following statements about the enzymic complex that carries out the synthesis of ATP during oxidative phosphorylation are correct except (A) It is located on the matrix side of the inner ... inhibited by oligomycin (C) It can exhibit ATPase activity (D) It can bind molecular O2
Last Answer : D
Description : Which of the following statements are true of oxidants? A. In addition to their pathophysiologic roles in inflammation, injury, and infection, oxidants also have physiologic roles. B. Oxidants may ... involved the catalytic production of superoxide anion (O 2 ) by the enzyme xanthine oxidase.
Last Answer : Answer: ABCD DISCUSSION: Oxidants are reactive oxygen metabolites that have both physiologic and pathophysiologic roles. As potent oxidizing agents, oxidants are involved in cytochrome P ... leukocyte infiltration and activation, causing further tissue damage by the release of cytotoxic proteases
Description : Potential energy is produced during a.Photorespiration b.Respiration c.Photosynthesis d.ATP synthesis
Last Answer : c.Photosynthesis
Description : During light reaction of photosynthesis, which of the following phenomenon is observed during cyclic phosphorylation as well as non-cyclic phosphorylation? (a) Release of O2 (b) Formation of ATP (c) Formation of NADPH (d) Involvement of PS I and PS II pigment systems
Last Answer : (b) Formation of ATP
Description : Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on
Last Answer : Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on A. Proton ... . Accumalation of Na ions D. Membrane potential
Description : In photosynthesis , for synthesis of one mole of glucose number of ATP and `NADPH_(2)` required is
Last Answer : In photosynthesis , for synthesis of one mole of glucose number of ATP and `NADPH_(2)` required is A. 10 and 20 B. 18 and 12 C. 8 and 6 D. 12 and 15
Description : Write the requriement for chemiosmotic ATP synthesis
Last Answer : Write the requriement for chemiosmotic ATP synthesis
Description : Amanitin the mushroom poison inhibits (A) Glycoprotein synthesis (B) ATP synthesis (C) DNA synthesis (D) mRNA synthesis
Last Answer : Answer : D
Description : Synthesis of GMP and IMP requires the following: (A) NH3 NAD+, ATP (B) Glutamine, NAD+, ATP (C) NH3, GTP, NADP+ (D) Glutamine, GTP, NADP+
Last Answer : Answer : B
Description : The mRNA ready for protein synthesis has the ________ cap. (A) ATP (B) CTP (C) GTP (D) UTP
Last Answer : Answer : C
Description : Initiation of protein synthesis requires (A) ATP (B) AMP (C) GDP (D) GTP
Description : The cofactors required for synthesis of adenylosuccinate are (A) ATP, Mg++ (B) ADP (C) GTP, Mg++ (D) GDP
Description : Coenzymes derived from the vitamin shown below are required by enzymes involved in the synthesis of which of the following? (A) ATP (B) UTP (C) CTP (D) NADH
Last Answer : Answer : A
Description : Formation of acetyl CoA from pyruvate for de novo synthesis of fatty acids requires (A) Pyruvate dehydrogenase complex (B) Citrate synthetase (C) ATP citrate lyase (D) All of these
Description : Synthesis of sphingosine requires the cofactor (A) NAD (B) NADP (C) NADPH+ (D) ATP
Description : A soluble system for synthesis of fatty acids have been isolated from avian liver, required for the formation of long chain fatty acids by this system is (A) ATP (B) Acetyl CoA (C) NADPH (D) All of these
Description : De novo synthesis of fatty acids requires all of the following except (A) Biotin (B) NADH (C) Panthothenic acid (D) ATP
Description : Synthesis of glutamine is accompanied by the hydrolysis of (A) ATP (B) ADP (C) TPP (D) Creatin phosphate
Description : ATP is required in following reactions of urea cycle: (A) Synthesis of carbamoyl phosphate and citrulline (B) Synthesis of citrulline and argininosuccinate (C) Synthesis of argininosuccinate and arginine (D) Synthesis of carbamoyl phosphate and argininosuccinate
Description : A coenzyme required for the synthesis of glycine from serine is (A) ATP (B) Pyridoxal phosphate (C) Tetrahydrofolate (D) NAD
Description : All of the following are required for synthesis of glutamine except (A) Glutamate (B) Ammonia (C) Pyridoxal phosphate (D) ATP
Description : The number of ATP required for urea synthesis is (A) 0 (B) 1 (C) 2 (D) 3
Description : An uncoupler of oxidative phosphorylation such as dinitrophenol (A) Inhibits electron transport and ATP synthesis (B) Allow electron transport to proceed without ATP synthesis (C) Inhibits electron transport without impairment of ATP synthesis (D) Specially inhibits cytochrome b
Last Answer : B
Description : Net gain ATP synthesis from one molecule of glucose in respiration
Last Answer : Ans. 36 ATP
Description : The biochemical mechanism of action of digitalis is associated with (a) A decrease in calcium uptake by the sarcoplasmic reticulum (b) An increase in ATP synthesis (c) A modification of the actin molecule (d) An increase in systolic intracellular calcium levels (e) A block of sodium/calcium exchange
Last Answer : Ans: D
Description : Cyclooxygenase-1 and –2 are responsible for (a) The synthesis of prostaglandins from arachidonate (b) The synthesis of leukotrienes from arachidonate (c) The conversion of ATP to cAMP (d) The metabolic degradation of cAMP (e) The conversion of GTP to cGMP
Last Answer : Ans: A
Description : The correct sequence of electron acceptor in ATP synthesis is (a) Cyt. b, c, a3, a (b) Cyt. c, b, a, a3 (c) Cyt. a, a, b, c (d) Cyt. b, c, a, a3.
Last Answer : (d) Cyt. b, c, a, a3.
Description : What is the role of NAD+ in cellular respiration? (a) It functions as an enzyme. (b) It functions as an electron carrier. (c) It is a nucleotide source for ATP synthesis. (d) It is the final electron acceptor for anaerobic respiration.
Last Answer : c) It is a nucleotide source for ATP synthesis.
Description : Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on (a) membrane potential (b) accumulation of Na+ ions (c) accumulation of K+ ions (d) proton gradient.
Last Answer : (d) proton gradient
Description : Select the alternative giving correct identification and function of the organelle A' in the diagram. (a) Mitochondria - Produce cellular energy in the form of ATP (b) Golgi body - ... packaging material (c) Lysosomes - Secrete hydrolytic enzymes (d) Endoplasmic reticulum - Synthesis of lipids
Last Answer : (a) Mitochondria - Produce cellular energy in the form of ATP
Description : The electron transport chain is directly involved with a. ATP Synthesis b. CO2 Production. c. H + Pumping d. Generating Oxygen Gas.
Last Answer : a. ATP Synthesis
Description : What is the role of NAD+ in cellular respiration ? (1) It functions as an enzymes (2) It functions as an electron carrier (3) It is a nucleotide source for ATP synthesis (4) It is the final electron acceptor for anaerobic respiration
Last Answer : (2) It functions as an electron carrier
Description : The site of enzymes directing the metabolic oxidation (respiration), ATP synthesis and considered as power house of cell are (A) Lysosomes (B) Microsomes (C) Mitochondria (D) Golgi apparatus
Last Answer : (C) Mitochondria
Description : In photosynthesis directly light driven reaction are called (A)_____ while some reactions are depends on the products of light reaction (ATP and NADPH
Last Answer : In photosynthesis directly light driven reaction are called (A)_____ while some reactions are depends ... and NADPH) conventinally called as (B)____
Description : In photosynthesis energy from light reaction to dark reaction is transferred in the form of (a) ADP (b) ATP (c) RuDP (d) chlorophyll.
Last Answer : (b) ATP
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 : Which of the following is not a product of light reaction of photosynthesis? (a) ATP (b) NADH (c) NADPH (d) Oxygen
Last Answer : b) NADH
Description : Which of the following is not a product of light reaction of photosynthesis ? (1) ATP (2) NADH (3) NADPH (4) Oxygen
Last Answer : (2) NADH
Description : What is the synthesis reaction of light ?
Last Answer : The synthesis reaction of light occurs rapidly in bright sunlight ; The reactions that change speed with contact with light are called photochemical reactions
Description : In what type of chemical reaction are the products of water removed during the formation of covalent bonds? a. Hydrolysis b. Ionization c. Dehydration synthesis d. Decomposition
Last Answer : c. Dehydration synthesis
Description : The reduction process of `CO_(2)` and ATP formatioin in plants has relationship. In this reaction , ATP is
Last Answer : The reduction process of `CO_(2)` and ATP formatioin in plants has relationship. In this reaction , ATP ... . Utilized C. Not utlized D. None of these
Description : All the following statements about charging of tRNA are correct except (A) It is catalysed by amino acyl tRNA synthetase (B) ATP is converted into ADP and Pi in this reaction (C) The enzyme recognizes the tRNA and the amino acid (D) There is a separate enzyme for each tRNA
Description : The reaction catalysed by α-ketoglutarate dehydrogenase in the citric acid cycle requires (A) NAD (B) NADP (C) ADP (D) ATP
Description : In the reaction below, Nu TP stands for NuTP + glucose → Glucose 6–Phosphate + NuDP. (A) ATP (B) CTP (C) GTP (D) UTP
Description : The energy yield from complete oxidation of products generated by second reaction cycle of β-oxidation of palmitoyl CoA will be (A) 5 ATP (B) 12 ATP (C) 17 ATP (D) 34 ATP