Description : The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is (a) iron-sulphur protein(b) ferredoxin (c) quinone (d) cytochrome.
Last Answer : (c) quinone
Description : Electrons from excited chlorophyll molecule of photosystem II are accepted first by (a) quinone (b) ferredoxin (c) cytochrome-b (d) cytochrome-f.
Last Answer : (a) quinone
Description : In photosystem-I the first electron acceptor is
Last Answer : In photosystem-I the first electron acceptor is A. Plastocyanin B. An iron-sulfur protein C. Ferrodoxin D. Cytochorme
Description : The first electron acceptor in photosystem-I of cyclic photophosphorylation is
Last Answer : The first electron acceptor in photosystem-I of cyclic photophosphorylation is A. Cytochrome B. Plastocyanin C. Ferrodoxin D. Plastoquinone
Description : Ferredoxin `e^(-)` acceptor is a component of
Last Answer : Ferredoxin `e^(-)` acceptor is a component of A. PS-I B. PS-II C. Hill reaction D. `P_(680)`
Description : Photosystem II occurs in (a) stroma (b) cytochrome (c) grana (d) mitochondrial surface.
Last Answer : (c) grana
Description : After electrons leave photosystem II, they move through a chain of three protein complexes. Where do they go after that electron transport chain?
Last Answer : Photosystem I (APEX)
Description : The enzyme using some other substance, not oxygen as hydrogen acceptor is (A) Tyrosinase (B) Succinate dehydrogenase (C) Uricase (D) Cytochrome oxidase
Last Answer : Answer : B
Description : An enzyme catalyzing oxidoreduction, using oxygen as hydrogen acceptor is (A) Cytochrome oxidase (B) Lactate dehydrogenase (C) Malate dehydrogenase (D) Succinate dehydrogenase
Last Answer : Answer : A
Description : Iron is an important component of – a) Siroheme b) Ferredoxin c) Cytochromes d) All of these
Last Answer : d) All of these
Description : What is the final electron acceptor in aerobic respiration? -Biology
Last Answer : answer:
Description : What is the final electron acceptor in the light dependent reaction of photosynthesis? -Biology
Description : Primary electron acceptor of PS-II is
Last Answer : Primary electron acceptor of PS-II is A. Pheophytin B. Ferredoxin C. PQ D. PC
Description : Oxygen acts as the final hydrogen acceptor in electron transport chain of mitochondria.
Last Answer : Oxygen acts as the final hydrogen acceptor in electron transport chain of mitochondria.
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 : In Krebs’ cycle, the FAD precipitates as electron acceptor during the conversion of (a) fumaric acid to malic acid (b) succinic acid to fumaric acid (c) succinyl CoA to succinic acid (d) α-ketoglutarate to succinyl CoA.
Last Answer : (b) succinic acid to fumaric acid
Description : In alcohol fermentation (a) triose phosphate is the electron donor while acetaldehyde is the electron acceptor (b) triose phosphate is the electron donor while pyruvic acid is the electron acceptor (c) there is no electron donor (d) oxygen is the electron acceptor
Last Answer : (a) triose phosphate is the electron donor while acetaldehyde is the electron acceptor
Description : The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called (a) glycolysis (b) fermentation (c) aerobic respiration (d) photorespiration.
Last Answer : (b) fermentation
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 : Metalloids (A) Are good conductor of heat & electricity (B) Act as electron donors with metals & as electron acceptor with non metals (C) Are not necessarily solids at room temperature ... & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron
Last Answer : D) Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron
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 : Any species that acts as an electron-pair acceptor a: w) Lewis base x) Bronsted base y) Lewis acid z) Bronsted acid
Last Answer : ANSWER: Y -- LEWIS ACID
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 : Ferredoxin is a constituent of (a) PS I (b) PS II (c) Hill reaction (d) P680.
Last Answer : (a) PS I
Description : Select the antibiotic which inhibits bacterial protein synthesis by interfering with translocation of elongating peptide chain from acceptor site back to the peptidyl site of the ribosome so that ... chain is prematurely terminated: A. Chloramphenicol B. Erythromycin C. Tetracycline D. Streptomycin
Last Answer : B. Erythromycin
Description : Cytochrome C (small protein) is attached to outer surface of the inner mitochondrial membrane.
Last Answer : Cytochrome C (small protein) is attached to outer surface of the inner mitochondrial membrane.
Description : Cytochrome is (a) metallo flavo protein (b) Fe containing porphyrin pigment (c) glycoprotein (d) lipid.
Last Answer : (b) Fe containing porphyrin pigment
Description : The iron containing nonporphyrin is (A) Hemosiderin (B) Catalase (C) Cytochrome C (D) Peroxidase
Description : All of the following are iron-containing enzymes except (A) Carbonic anhydrase (B) Catalase (C) Peroxidase (D) Cytochrome oxidase
Description : Which one of the following statements about cytochrome P450 is wrong? (a) It is a coloured cell. (b) It is an enzyme involved in oxidation reactions. (c) It has an important role in metabolism. (d) It contains iron
Last Answer : (a) It is a coloured cell.
Description : Electrons from excited chlorophyll molecule of photosystem II are accepted first by
Last Answer : Electrons from excited chlorophyll molecule of photosystem II are accepted first by A. Quinone B. Ferredoxin C. Cytochrome-b D. Cytochrome-f
Description : What is a photosystem? -Biology
Description : Explain photosystem I and photosystem II in green plants. -Biology
Description : What is a photosystem ?
Last Answer : Chlorophyll molecules and their associated electron receptors work together as a unit. The name of this unit is photosystem. The photosystem is located on the thylakoid screen of the chloroplast and can contain up to four hundred ... i) Photosystem-1 ( PS - I) and ( ii) Photosystem-2 ( PS - II) .
Description : Photosystem I and Photosystem II are found in
Last Answer : Photosystem I and Photosystem II are found in A. Stroma of chloroplast B. Grana of ... Matrix of mitochondria D. Inner membrane of mitochondria
Description : Photosystem concerned with the reduction of NADP is
Last Answer : Photosystem concerned with the reduction of NADP is A. PS-I B. PS-II C. Both (1) amd (2) D. Quantasome
Description : Photosystem II occurs in
Last Answer : Photosystem II occurs in A. Stroma B. Cytochrome C. Grana D. Mitochondrial surface
Description : What is a role of photosystem 2 in light reactions?
Last Answer : Feel Free to Answer
Description : Which substance in chloroplast is a green pigment that absorbs energy for photosystem?
Last Answer : Chlorophyll
Description : Electrons are excited in photosystem I. With what do these electrons combine to produce an energy-carrying molecule?
Last Answer : NDHP+
Description : Which of the following pairs are correctly matched? (1) 700 nm—Photosystem-I (2) 650 nm—Photosystem-II (3) 690 nm—Photosystem-II (4) 620 nm—Phycocyanin
Last Answer : Ans. ((c))
Description : NADH is produced in:. (a) Photosystem-II (b) Photosystem-I (c) Glycolysis (d) Both (a) and (b)
Description : In photosynthesis, the light-independent reactions take place at (a) photosystem II (b) stromal matrix (c) thylakoid lumen (d) photosystem I
Last Answer : (b) stromal matrix
Description : NADPH2 is generated through (a) photosystem II (b) anaerobic respiration (c) glycolysis (d) photosystem I.
Last Answer : (d) photosystem
Description : Which one of the following is correct sequence for the flow of electrons in the energy-fixing reactions of photosynthesis? a. Water-photosystem 1-photosystem II-NADPH b. Photosystem I-NADPH-water- ... --- photosystem II------ photosystem I-NADPH d. NADPH-photosystem Il-photosystem I-water
Last Answer : d. NADPH—photosystem Il—photosystem I—water
Description : What is the valence electron of sulphur?
Last Answer : 3
Description : The first acceptor of electrons from an excited chlorophyll molecule of phtosystem II is
Last Answer : The first acceptor of electrons from an excited chlorophyll molecule of phtosystem II is A. Quinone B. Cytochorme C. Iron-sulfur protein D. Ferredoxin