The pigment involved in photo morphogenetic movements is: (a) Cytochrome (b) Phytochrome (c) Chromatin (d) Vernalin

The pigment involved in photo morphogenetic movements is: (a) Cytochrome (b) Phytochrome (c) Chromatin (d) Vernalin
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Ans. ((b))
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Carbon monoxide kills because it destroys a) Haemoglobin b) Phytochrome c) Cytochrome d) Both a and b.

Description : Carbon monoxide kills because it destroys a) Haemoglobin b) Phytochrome c) Cytochrome d) Both a and b.

Last Answer : a) Haemoglobin

A pigment which absorbs red and far-red light is (a) cytochrome (b) xanthophyll (c) phytochrome (d) carotene.

Description : A pigment which absorbs red and far-red light is (a) cytochrome (b) xanthophyll (c) phytochrome (d) carotene.

Last Answer : (c) phytochrome

Which pigment absorbs the red and far-red light? (a) Cytochrome (b) Phytochrome (c) Carotenoids (d) Chlorophyll

Description : Which pigment absorbs the red and far-red light? (a) Cytochrome (b) Phytochrome (c) Carotenoids (d) Chlorophyll

Last Answer : (b) Phytochrome

Hormone used in tissue culture for better growth is: (1) Auxin (2) Gibberellin (3) Cytokinin (4) Vernalin

Description : Hormone used in tissue culture for better growth is: (1) Auxin (2) Gibberellin (3) Cytokinin (4) Vernalin

Last Answer : Ans. ((d))

Main substance involved in transfer of electrons in photosynthesis is (a) Phytochrome (b) Cytochrome (c) FAD (d) Both (a) and (b)

Description : Main substance involved in transfer of electrons in photosynthesis is (a) Phytochrome (b) Cytochrome (c) FAD (d) Both (a) and (b)

Last Answer : Ans:(b)

Morphogenetic movements take place during

Description : Morphogenetic movements take place during

Last Answer : Morphogenetic movements take place during A. Formation of morula B. Blastulation C. Gastrulation D. Organogenesis.

Morphogenetic movements convert hollow spherical blastula into

Description : Morphogenetic movements convert hollow spherical blastula into

Last Answer : Morphogenetic movements convert hollow spherical blastula into A. Gastrula B. Morula C. Neurula D. Embryonic disc

Morphogenetic movements occurs in

Description : Morphogenetic movements occurs in

Last Answer : Morphogenetic movements occurs in A. Cleavage stage B. Morula C. Blastula D. Gastrula

Morphogenetic movements occurs in

Description : Morphogenetic movements occurs in

Last Answer : Morphogenetic movements occurs in A. morula stage B. blastula stage C. gastrula stage D. Zygote

Which of the following parts of the nucleus makes ribosomes and RNA? a. Nuclear envelope b. Nucleolus c. Nucleoplasm d. Chromatin

Description : Which of the following parts of the nucleus makes ribosomes and RNA? a. Nuclear envelope b. Nucleolus c. Nucleoplasm d. Chromatin

Last Answer : b. Nucleolus

Which region of chromatin is transcriptionally silent? a. Nucleoid b. Centromere c. Euchromatin d. Heterochromatin

Description : Which region of chromatin is transcriptionally silent? a. Nucleoid b. Centromere c. Euchromatin d. Heterochromatin

Last Answer : d. Heterochromatin

Physiologically active form of Phytochrome is (a) P730/Fr (b) P660/Pr (c) P700 (d) P680

Description : Physiologically active form of Phytochrome is (a) P730/Fr (b) P660/Pr (c) P700 (d) P680

Last Answer : Ans. ((a))

The piament involved in red - far red light interconversion is Or The pigm,ent involved in photomorphogenetic movements is Or Pigment involved in phot

Description : The piament involved in red - far red light interconversion is Or The pigm,ent involved in photomorphogenetic movements is Or Pigment involved in phot

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The effect of light on flowering plants is mediated through a photoreceptor compound. Which of the following is such a compound? (a) Cytochrome (b) Cryptochrome (c) Phytochrome (d) Phycoerythrin

Description : The effect of light on flowering plants is mediated through a photoreceptor compound. Which of the following is such a compound? (a) Cytochrome (b) Cryptochrome (c) Phytochrome (d) Phycoerythrin

Last Answer : Ans:(c)

Which of the following pigments acts as a reaction- centre during photosynthesis? (a) Carotene (b) Phytochrome (c) P700 (d) Cytochrome

Description : Which of the following pigments acts as a reaction- centre during photosynthesis? (a) Carotene (b) Phytochrome (c) P700 (d) Cytochrome

Last Answer : (c) P700

Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases

Description : Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases

Last Answer : Ans. ((b))

Which can function as carrier in active ion absorption? (a) Feradoxin (b) Plastoquinone (c) Cytochrome (d) Lecithin

Description : Which can function as carrier in active ion absorption? (a) Feradoxin (b) Plastoquinone (c) Cytochrome (d) Lecithin

Last Answer : Ans. ((d))

Is phytochrome a pigment? -Biology

Description : Is phytochrome a pigment? -Biology

Last Answer : answer:

Is phytochrome a pigment? -Biology

Description : Is phytochrome a pigment? -Biology

Last Answer : answer:

Proteinaceous pigment which controls the activities concerned with light is (a) phytochrome (b) chlorophyll (c) anthocyanin (d) carotenoids.

Description : Proteinaceous pigment which controls the activities concerned with light is (a) phytochrome (b) chlorophyll (c) anthocyanin (d) carotenoids.

Last Answer : (a) phytochrome

Cytochrome is (a) metallo flavo protein (b) Fe containing porphyrin pigment (c) glycoprotein (d) lipid.

Description : Cytochrome is (a) metallo flavo protein (b) Fe containing porphyrin pigment (c) glycoprotein (d) lipid.

Last Answer : (b) Fe containing porphyrin pigment

What is phytochrome photo reversibility? -Biology

Description : What is phytochrome photo reversibility? -Biology

Last Answer : answer:

What is phytochrome photo reversibility? -Biology

Description : What is phytochrome photo reversibility? -Biology

Last Answer : answer:

Cholodny-Went theory is connected with: (1) Photo morphogenesis (2) Phototropism (3) Nastic movement (4) Geotropism

Description : Cholodny-Went theory is connected with: (1) Photo morphogenesis (2) Phototropism (3) Nastic movement (4) Geotropism

Last Answer : Ans. ((c))

Reaction centre of photo system-I in green plants is: (a) P680 (c) P690 (b) P700 (d) P780

Description : Reaction centre of photo system-I in green plants is: (a) P680 (c) P690 (b) P700 (d) P780

Last Answer : Ans. ((c))

Phytochrome is involved in (a) phototropism (b) photorespiration (c) photoperiodism (d) geotropism

Description : Phytochrome is involved in (a) phototropism (b) photorespiration (c) photoperiodism (d) geotropism

Last Answer : (c) photoperiodism

Organelles involved in photorespiration are (a) Mitochondria, chloroplasts and ribosomes (b) Mitochondria, Peroxisomes and chloroplasts (c) Mitochondria, nucleus and ribosomes (d) Mitochondria, proxisomes and glyoxisomes

Description : Organelles involved in photorespiration are (a) Mitochondria, chloroplasts and ribosomes (b) Mitochondria, Peroxisomes and chloroplasts (c) Mitochondria, nucleus and ribosomes (d) Mitochondria, proxisomes and glyoxisomes

Last Answer : Ans. ((b))

The organelles involved in photorespiration are (a) Glyoxysomes, chloroplast and mithondria (b) Chloroplast, peroxisome and glythisome (c) Mitochondria, peroxisome and glyoxysomes (d) Chloroplast, mitochondria and peroxisome

Description : The organelles involved in photorespiration are (a) Glyoxysomes, chloroplast and mithondria (b) Chloroplast, peroxisome and glythisome (c) Mitochondria, peroxisome and glyoxysomes (d) Chloroplast, mitochondria and peroxisome

Last Answer : Ans. ((d))

The tissue which is involved in development of lateral roots is

Description : The tissue which is involved in development of lateral roots is

Last Answer : The tissue which is involved in development of lateral roots is – Pericycle

Disadvantages of natural vegetative propagation includes a) lack of dispersal mechanisms b) no fertilization is involved c) area is quickly colonized d) daughter plants can grow quickly

Description : Disadvantages of natural vegetative propagation includes a) lack of dispersal mechanisms b) no fertilization is involved c) area is quickly colonized d) daughter plants can grow quickly

Last Answer : a) lack of dispersal mechanisms

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

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.

The following is not true of the cytochrome P450 isoenzyme CYP2D6: A. It generates the hepatotoxic metabolite N-acetyl benzoquinone immine from paracetamol B. It is involved in demethylation of codeine into morphine C. Its altered form is responsible for poor capacity to hydroxylate many drugs including metoprolol D. It is inhibited by quinidine

Description : The following is not true of the cytochrome P450 isoenzyme CYP2D6: A. It generates the hepatotoxic metabolite N-acetyl benzoquinone immine from paracetamol B. It is involved in demethylation of ... for poor capacity to hydroxylate many drugs including metoprolol D. It is inhibited by quinidine

Last Answer : A. It generates the hepatotoxic metabolite N-acetyl benzoquinone immine from paracetamol

Which of the following cytochrome P450 isoenzymes is involved in the metabolism of largest number of drugs in human beings and has been implicated in some dangerous drug interactions: A. CYP 3A4 B. CYP 2C9 C. CYP 2E1 D. CYP 1A2

Description : Which of the following cytochrome P450 isoenzymes is involved in the metabolism of largest number of drugs in human beings and has been implicated in some dangerous drug interactions: A. CYP 3A4 B. CYP 2C9 C. CYP 2E1 D. CYP 1A2

Last Answer : A. CYP 3A4

The following is not true of the cytochrome P450 isoenzyme CYP2D6: A. It generates the hepatotoxic metabolite N-acetyl benzoquinone immine from paracetamol B. It is involved in demethylation of codeine into morphine C. Its altered form is responsible for poor capacity to hydroxylate many drugs including metoprolol D. It is inhibited by quinidine

Description : The following is not true of the cytochrome P450 isoenzyme CYP2D6: A. It generates the hepatotoxic metabolite N-acetyl benzoquinone immine from paracetamol B. It is involved in demethylation of ... for poor capacity to hydroxylate many drugs including metoprolol D. It is inhibited by quinidine

Last Answer : A. It generates the hepatotoxic metabolite N-acetyl benzoquinone immine from paracetamo

Which of the following cytochrome P450 isoenzymes is involved in the metabolism of largest number of drugs in human beings and has been implicated in some dangerous drug interactions: A. CYP 3A4 B. CYP 2C9 C. CYP 2E1 D. CYP 1A2

Description : Which of the following cytochrome P450 isoenzymes is involved in the metabolism of largest number of drugs in human beings and has been implicated in some dangerous drug interactions: A. CYP 3A4 B. CYP 2C9 C. CYP 2E1 D. CYP 1A2

Last Answer : A. CYP 3A4

Name of photo reversible pigment. -Biology

Description : Name of photo reversible pigment. -Biology

Last Answer : answer:

Name of photo reversible pigment. -Biology

Description : Name of photo reversible pigment. -Biology

Last Answer : answer:

Retina contains this photo sensitive pigment. (A) Rhodopsin (B) Opsin (C) Retinol (D) Malanin

Description : Retina contains this photo sensitive pigment. (A) Rhodopsin (B) Opsin (C) Retinol (D) Malanin

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Which of the following is true with reference to blood platelets? (1) They have prominent nuclei (2) They are involved in phagocytosis (3) They have a pigment called haemoglobin (4) They are also called thrombocytes

Description : Which of the following is true with reference to blood platelets? (1) They have prominent nuclei (2) They are involved in phagocytosis (3) They have a pigment called haemoglobin (4) They are also called thrombocytes

Last Answer : (4) They are also called thromb-ocytes. Explanation: Platelets, also called thrombocytes, are a component of blood whose function is to stop bleeding by clumping and clotting blood vessel injuries. ... red and white blood cells, platelets are not actually cells but rather small fragments of cells.

The pigment involved in photosynthetic activity is - (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll

Description : The pigment involved in photosynthetic activity is - (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll

Last Answer : (4) chlorophyll Explanation: Chlorophyll is an extremely important bio-molecule, critical in photosynthesis, which allows plants to absorb energy from light. Chlorophyll absorbs light most strongly in ... near-green portions of the spectrum, hence the green color of chlorophyll-containing tissues.

Which vitamin is involved in visual pigment formation

Description : Which vitamin is involved in visual pigment formation 

Last Answer : ANSWER: VITAMIN A or BETA CAROTENE or CAROTENE

Which of the following is true with reference to blood platelets? (1) They have prominent nuclei. (2) They are involved in phagocytosis (3) They have a pigment called haemoglobin (4) They are also called thrombocytes.

Description : Which of the following is true with reference to blood platelets? (1) They have prominent nuclei. (2) They are involved in phagocytosis (3) They have a pigment called haemoglobin (4) They are also called thrombocytes.

Last Answer : They are also called thrombocytes.

The pigment involved in photosynthetic activity is (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll

Description : The pigment involved in photosynthetic activity is (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll

Last Answer : chlorophyll

How could the National Education Association be involved with the Occupy Movements?

Description : How could the National Education Association be involved with the Occupy Movements?

Last Answer : The only way anyone prestige is involved is if there they can actually offer a solution to protesting the banks. I admire the rebellion of the Occupy Movements. But to be frank, it's misplaced beef in ... however, because instead of protesting, one can just take his or her opinion to the polls! :)

Who coined the term chromatin? -Biology

Description : Who coined the term chromatin? -Biology

Last Answer : The term, introduced by Walther Flemming, has multiple meanings: Simple and concise definition: Chromatin is a macromolecular complex of a DNA macromolecule and protein macromolecules (and RNA). The proteins package and arrange the DNA and control its functions within the cell nucleus.

Difference between chromatin and chromosomes? -Biology

Description : Difference between chromatin and chromosomes? -Biology

Last Answer : answer:

When does the chromatin lattice look shorter and thicker ?

Description : When does the chromatin lattice look shorter and thicker ?

Last Answer : Chromatin reticulum appears shorter and thicker during cell division.

What is chromatin fiber ?

Description : What is chromatin fiber ?

Last Answer : The fibrous fibers in the nucleus are called chromatin fibers.

Sex chromatin present in `:-`

Description : Sex chromatin present in `:-`

Last Answer : Sex chromatin present in `:-` A. Drum stick like in lobe of Neutrophil B. Drum stick like ... of Eosinophil D. Drum stick like in lobe of limphocyte

Hetero-chromatin is :-

Description : Hetero-chromatin is :-

Last Answer : Hetero-chromatin is :- A. Darkly stained part of chromatin B. Lightly stained part of cristae ... part of grana D. Scattered Lobes in cytoplasm