Cellulose is the chief constituent of (1) cell wall (2) cell membrane (3) secondary wall of xylem (4) body wall of insects

Cellulose is the chief constituent of (1) cell wall (2) cell membrane (3) secondary wall of xylem (4) body wall of insects
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Cellulose is the chief constituent of – (1) cell wall (2) cell membrane (3) secondary wall of xylem (4) body wall of insects

Description : Cellulose is the chief constituent of – (1) cell wall (2) cell membrane (3) secondary wall of xylem (4) body wall of insects

Last Answer : (1) cell wall Explanation: In the primary (growing) plant cell wall, the major carbohydrates are cellulose, hemicellulose and pectin. The cell wall in plants provides the most significant difference ... is rigid (up to many micrometers in thickness) and gives plant cells a much defined shape.

Cellulose, the most important constituent of plant cell wall is made up of (a) branched chain of glucose molecules linked by β-1, 4 glycosidic bond in straight chain and α-1, 6 glycosidic bond at the site of branching (b) unbranched chain of glucose molecules linked by β-1, 4 glycosidic bond (c) branched chain of glucose molecules linked by α-1, 6 glycosidic bond at the site of branching (d) unbranched chain of glucose molecules linked by α-1, 4 glycosidic bond.

Description : Cellulose, the most important constituent of plant cell wall is made up of (a) branched chain of glucose molecules linked by β-1, 4 glycosidic bond in straight chain and α-1, 6 glycosidic bond ... the site of branching (d) unbranched chain of glucose molecules linked by α-1, 4 glycosidic bond.

Last Answer : (b) unbranched chain of glucose molecules linked by β-1, 4 glycosidic bond

The outer most layer of cell wall is (A) Primary wall (B) Secondary wall (C) Middle lamella (D) Plasma membrane

Description : The outer most layer of cell wall is (A) Primary wall (B) Secondary wall (C) Middle lamella (D) Plasma membrane

Last Answer : (C) Middle lamella

What is meant by “mutualist exploration of cellulose digestion”, a phenomenon that occurs in some mammals and insects?

Description : What is meant by “mutualist exploration of cellulose digestion”, a phenomenon that occurs in some mammals and insects?

Last Answer : Herbivorous animals eat great amounts of cellulose, a substance not digested by their digestive enzymes. In these animals regions of the digestive tube are colonized by microorganisms that digest cellulose. This ... occurs, e.g., in horses, cows, rabbits and in some insects such as termites.

Amylose is a constituent of (A) Starch (B) Cellulose (C) Glycogen (D) None of these

Description : Amylose is a constituent of (A) Starch (B) Cellulose (C) Glycogen (D) None of these

Last Answer : A

Cellulose is the main constituent of most __________ fibres. (A) Acrylic (B) Spandex (C) Synthetic (D) Natural

Description : Cellulose is the main constituent of most __________ fibres. (A) Acrylic (B) Spandex (C) Synthetic (D) Natural

Last Answer : (D) Natura

Main constituent of cotton fibre is (A) Lignin (B) Cellulose (C) Starch (D) Gelatine

Description : Main constituent of cotton fibre is (A) Lignin (B) Cellulose (C) Starch (D) Gelatine

Last Answer : (B) Cellulose

$ Cell wall of plants is formed of fungal cellulose. ! Smooth endoplasmic reticulum has ribosomes on its flagellin.

Description : $ Cell wall of plants is formed of fungal cellulose. ! Smooth endoplasmic reticulum has ribosomes on its flagellin.

Last Answer : $ Cell wall of plants is formed of fungal cellulose. ! Smooth endoplasmic reticulum has ribosomes on its ... wrong D. If both As and R are wrong.

Which of the following facilitates opening of stomatal aperture? (a) Decrease in turgidity of guard cells (b) Radial orientation of cellulose microfibrils in the cell wall of guard cells (c) Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells (d) Contraction of outer wall of guard cells

Description : Which of the following facilitates opening of stomatal aperture? (a) Decrease in turgidity of guard cells (b) Radial orientation of cellulose microfibrils in the cell wall of guard cells (c) ... microfibrils in the cell wall of guard cells (d) Contraction of outer wall of guard cells

Last Answer : (a) Decrease in turgidity of guard cells

One of the major components of cell wall of most fungi is (a) cellulose (b) hemicellulose (c) chitin (d) peptidoglycan.

Description : One of the major components of cell wall of most fungi is (a) cellulose (b) hemicellulose (c) chitin (d) peptidoglycan.

Last Answer : (c) chitin

Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen. (iii)Chemosynthetic autotrophic bacteria synthesize cellulose from glucose. (iv) Mycoplasma lack a cell wall and can survive without oxygenThe correct statements are (a) (ii) and (iii) (b) (i),(ii) and (iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv)..

Description : Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue-green alga which fixes ... iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv).

Last Answer : (d) (i), (ii) and (iv)

Which of the following facilitates opening of stomatal aperture ? (1) Decrease in turgidity of guard cells (2) Radial orientation of cellulose microfibrils in the cell wall of guard cells (3) Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells (4) Contraction of outer wall of guard cells

Description : Which of the following facilitates opening of stomatal aperture ? (1) Decrease in turgidity of guard cells (2) Radial orientation of cellulose microfibrils in the cell wall of guard cells (3) Longitudinal ... microfibrils in the cell wall of guard cells (4) Contraction of outer wall of guard cells

Last Answer : (2) Radial orientation of cellulose microfibrils in the cell wall of guard cells

Which one of the following is not a constituent of cell membrane

Description : Which one of the following is not a constituent of cell membrane

Last Answer : Which one of the following is not a constituent of cell membrane A. Phospholipids B. Cholesterol C. Gltcolipids D. Proline

The importance of phospholipids as constituent of cell membrane is because they possess (A) Fatty acids (B) Both polar and nonpolar groups (C) Glycerol (D) Phosphoric acid

Description : The importance of phospholipids as constituent of cell membrane is because they possess (A) Fatty acids (B) Both polar and nonpolar groups (C) Glycerol (D) Phosphoric acid

Last Answer : Answer : B

Which one of the following is not a constituent of cell membrane? (a) Glycolipids (b) Proline (c) Phospholipids (d) Cholesterol

Description : Which one of the following is not a constituent of cell membrane? (a) Glycolipids (b) Proline (c) Phospholipids (d) Cholesterol

Last Answer : (b) Proline

The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids.

Description : The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids.

Last Answer : (d) tracheids.

The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids

Description : The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids

Last Answer : d) tracheids.

Plant cells contain the following 3 things not found in animal cells _________, _____________ and ______________. (A) Plastids / Chlorophyll / Membrane (B) Chloroplast / Cell wall / Golgi body (C) Plastids / Cell wall / Chlorophyll (D) Mitochondria / Cell wall /

Description : Plant cells contain the following 3 things not found in animal cells _________, _____________ and ______________. (A) Plastids / Chlorophyll / Membrane (B) Chloroplast / Cell wall / Golgi body (C) Plastids / Cell wall / Chlorophyll (D) Mitochondria / Cell wall /

Last Answer : (C) Plastids / Cell wall / Chlorophyll

The chief raw material used for manufacturing Rayon is : (1) Nylon (2) Cellulose (3) Silicon (4) Radium and Argon

Description : The chief raw material used for manufacturing Rayon is : (1) Nylon (2) Cellulose (3) Silicon (4) Radium and Argon

Last Answer : (2) Cellulose Explanation: Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber.

The chief raw material used for manufacturing Rayon is : (1) Nylon (2) Cellulose (3) Silicon (4) Radium and Argon

Description : The chief raw material used for manufacturing Rayon is : (1) Nylon (2) Cellulose (3) Silicon (4) Radium and Argon

Last Answer : Cellulose

Jute fibre is extracted from ? a Xylem b Parenchyma c Secondary phloem d Epidermal layer

Description : Jute fibre is extracted from ? a Xylem b Parenchyma c Secondary phloem d Epidermal layer

Last Answer : c Secondary phloem

Vascular cambium produces (a) primary xylem and primary phloem (b) secondary xylem and secondary phloem (c) primary xylem and secondary phloem (d) secondary xylem and primary phloem.

Description : Vascular cambium produces (a) primary xylem and primary phloem (b) secondary xylem and secondary phloem (c) primary xylem and secondary phloem (d) secondary xylem and primary phloem.

Last Answer : (b) secondary xylem and secondary phloem

The vascular cambium normally gives rise to (a) primary phloem (b) secondary xylem (c) periderm (d) phelloderm.

Description : The vascular cambium normally gives rise to (a) primary phloem (b) secondary xylem (c) periderm (d) phelloderm.

Last Answer : (b) secondary xylem

Secondary xylem and phloem in dicot stem are produced by (a) apical meristems (b) vascular cambium (c) phellogen (d) axillary meristems

Description : Secondary xylem and phloem in dicot stem are produced by (a) apical meristems (b) vascular cambium (c) phellogen (d) axillary meristems

Last Answer : (b) vascular cambium

Identify the incorrect statement. (a) Heartwood does not conduct water but gives mechanical support. (b) Sapwood is involved in conduction of water and minerals from root to leaf. (c) Sapwood is the innermost secondary xylem and is lighter in colour. (d) Due to deposition of tannins, resins, oils, etc., heartwood is dark in colour.

Description : Identify the incorrect statement. (a) Heartwood does not conduct water but gives mechanical support. (b) Sapwood is involved in conduction of water and minerals from root to leaf. (c) Sapwood is the innermost ... . (d) Due to deposition of tannins, resins, oils, etc., heartwood is dark in colour.

Last Answer : (c) Sapwood is the innermost secondary xylem and is lighter in colour

What happens in plants during vascularisation? (a) Differentiation of procambium, formation of primary phloem followed by formation of primary xylem (b) Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously (c) Formation of procambium, primary phloem and xylem simultaneously (d) Differentiation of procambium followed by the formation of secondary xylem

Description : What happens in plants during vascularisation? (a) Differentiation of procambium, formation of primary phloem followed by formation of primary xylem (b) Differentiation of procambium followed ... xylem simultaneously (d) Differentiation of procambium followed by the formation of secondary xylem

Last Answer : (b) Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously

As compared to a dicot root, a monocot root has (a) more abundant secondary xylem (b) many xylem bundles (c) inconspicuous annual rings (d) relatively thicker periderm.

Description : As compared to a dicot root, a monocot root has (a) more abundant secondary xylem (b) many xylem bundles (c) inconspicuous annual rings (d) relatively thicker periderm.

Last Answer : (b) many xylem bundles

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two? (a) Secondary xylem (b) Secondary phloem (c) Protoxylem (d) Cortical cells

Description : You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two? (a) Secondary xylem (b) Secondary phloem (c) Protoxylem (d) Cortical cells

Last Answer : (c) Protoxylem

Some vascular bundles are described as open because these (a) are surrounded by pericycle but no endodermis (b) are capable of producing secondary xylem and phloem(c) possess conjunctive tissue between xylem and phloem (d) are not surrounded by pericycle.

Description : Some vascular bundles are described as open because these (a) are surrounded by pericycle but no endodermis (b) are capable of producing secondary xylem and phloem (c) possess conjunctive tissue between xylem and phloem (d) are not surrounded by pericycle.

Last Answer : (b) are capable of producing secondary xylem and phloem

Cork cambium and vascular cambium are (a) parts of secondary xylem and phloem (b) parts of pericycle (c) lateral meristem (d) apical meristem.

Description : Cork cambium and vascular cambium are (a) parts of secondary xylem and phloem (b) parts of pericycle (c) lateral meristem (d) apical meristem.

Last Answer : (c) lateral meristem

Cork cambium and vascular cambium are (a) parts of secondary xylem and phloem (b) parts of pericycle (c) lateral meristem (d) apical meristem.

Description : Cork cambium and vascular cambium are (a) parts of secondary xylem and phloem (b) parts of pericycle (c) lateral meristem (d) apical meristem.

Last Answer : c) lateral meristem

The vascular cambium normally gives rise to : (1) Primary phloem (2) Secondary xylem (3) Periderm (4) Phelloderm

Description : The vascular cambium normally gives rise to : (1) Primary phloem (2) Secondary xylem (3) Periderm (4) Phelloderm

Last Answer : 2) Secondary xylem

Secondary xylem and phloem in dicot stem are produced by (1) Apical meristems (2) Vascular cambium (3) Phellogen (4) Axillary meristems

Description : Secondary xylem and phloem in dicot stem are produced by (1) Apical meristems (2) Vascular cambium (3) Phellogen (4) Axillary meristems

Last Answer : (2) Vascular cambium

What is the main constituent of the cell wall of bacteria?

Description : What is the main constituent of the cell wall of bacteria?

Last Answer : The bacterial cell wall is made of peptidoglycans. Bacterial Cell Review - Image Diversity: bacterial cell wall

Magnesium is a constituent of : (A) Nucleic Acid (B) Enzyme system (C) Cell wall (D) Chlorophyll

Description : Magnesium is a constituent of : (A) Nucleic Acid (B) Enzyme system (C) Cell wall (D) Chlorophyll

Last Answer : (D) Chlorophyll

What are the identifying features of meristematic tissues? (a) thick cellulose wall, small vacuoles, dense cytoplasm, small nuclei (b) thin cellulose wall, almost no vacuoles, dense cytoplasm, prominent nuclei (c) thin cellulose wall,no vacuoles, sparse cytoplasm, prominent nuclei (d) thick cellulose, large vacuoles, sparse cytoplasm, small nuclei

Description : What are the identifying features of meristematic tissues? (a) thick cellulose wall, small vacuoles, dense cytoplasm, small nuclei (b) thin cellulose wall, almost no vacuoles, dense cytoplasm, ... sparse cytoplasm, prominent nuclei (d) thick cellulose, large vacuoles, sparse cytoplasm, small nuclei

Last Answer : (b) thin cellulose wall, almost no vacuoles, dense cytoplasm, prominent nuclei

Thickness and toughness of plant walls are increased by deposition within the original cellulose wall, of a substance known as lignin. The process of deposition is called: a) Sclerenchymacia b) Lignification c) Scleridia

Description : Thickness and toughness of plant walls are increased by deposition within the original cellulose wall, of a substance known as lignin. The process of deposition is called: a) Sclerenchymacia b) Lignification c) Scleridia

Last Answer : ANSWER: B -- LIGNIFICATION

There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s) is/are true concerning energy converting transport? a. The site of energy conversion and transport in the plasma membrane involves the phospholipid component b. The Na+-K++-ATPase derives energy from hydrolysis of extracellular ATP c. In some systems, energy inherent in the transmembrane ion gradient can be used to drive transport of a second species d. Examples of species transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose

Which of the following is secondary to immune deficiency: A. Pseudo membrane deficiency B. Herpes simplex C. Squamous cell carcinoma D. Elevated Epstein bar viruses incidence

Description : Which of the following is secondary to immune deficiency: A. Pseudo membrane deficiency B. Herpes simplex C. Squamous cell carcinoma D. Elevated Epstein bar viruses incidence

Last Answer : D. Elevated Epstein bar viruses incidence

The chief constituent of gobar gas is (a) Methane (b) Carbon dioxide (c) Acetylene (d) Ethylene

Description : The chief constituent of gobar gas is (a) Methane (b) Carbon dioxide (c) Acetylene (d) Ethylene

Last Answer : Ans:(a)

Consider the following statements: 1. Detergents do not produce lather with hard water 2. Water gas is a mixture of carbon monoxide and hydrogen 3. Methane is the chief constituent of CNG 4. LPG contains mainly n-butane 5. The correct statements are: (a) 1, 2 and 4 only (b) 1,3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

Description : Consider the following statements: 1. Detergents do not produce lather with hard water 2. Water gas is a mixture of carbon monoxide and hydrogen 3. Methane is the chief constituent of CNG 4. LPG contains mainly n-butane 5. The correct ... (b) 1,3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

Last Answer : Ans:(c)

The chief constituent of gobar gas is (a) Methane (b) Ethane (c) Propane (d) Chlorine

Description : The chief constituent of gobar gas is (a) Methane (b) Ethane (c) Propane (d) Chlorine

Last Answer : Ans:(a)

The chief constituent of natural gas is: (1) Methane (2) Helium (3) Nitrogen (4) Propalie

Description : The chief constituent of natural gas is: (1) Methane (2) Helium (3) Nitrogen (4) Propalie

Last Answer : (1) Methane Explanation: Natural gas is a naturally occurring hydrocarbon has mixture consisting primarily of methane (CH4). However, it also includes varying amounts of other higher alkanes (ethane, propane), and a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.

The chief constituent of vinegar is – (1) Formic acid (2) Acetic acid (3) Salycylic acid (4) Oxalic acid

Description : The chief constituent of vinegar is – (1) Formic acid (2) Acetic acid (3) Salycylic acid (4) Oxalic acid

Last Answer : (2) Acetic acid Explanation: Vinegar is a liquid substance consisting mainly of acetic acid (CH3CO2H) and water, the acetic acid being produced through the fermentation of ethanol by acetic acid ... easily available mild acid, it had a great variety of industrial, medical, and domestic uses.

Chief constituent of ordinary Portland cement is [ A ] Lime [ B ] Alumina [ C ] Magnesia [ D ] Iron oxide

Description : Chief constituent of ordinary Portland cement is [ A ] Lime [ B ] Alumina [ C ] Magnesia [ D ] Iron oxide

Last Answer : [ A ] Lime

The chief constituent of natural gas is: (1) Methane (2) Helium (3) Nitrogen (4) Propane

Description : The chief constituent of natural gas is: (1) Methane (2) Helium (3) Nitrogen (4) Propane

Last Answer : Methane

The chief constituent of vinegar is (1) Formic acid (2) Acetic acid (3) Salycylic acid (4) Oxalic acid

Description : The chief constituent of vinegar is (1) Formic acid (2) Acetic acid (3) Salycylic acid (4) Oxalic acid

Last Answer : Acetic acid

$ In osmosis, semipermeable membrane is a must. ! Cell wall is semipermeable.

Description : $ In osmosis, semipermeable membrane is a must. ! Cell wall is semipermeable.

Last Answer : $ In osmosis, semipermeable membrane is a must. ! Cell wall is semipermeable. A. If both As and R are ... is wrong D. If both As and R are wrong.

What type of cell may contain a cell wall outside of the cell membrane?

Description : What type of cell may contain a cell wall outside of the cell membrane?

Last Answer : What is the answer ?

What type of cell would have a cell wall cell membrane no nucleus and ribsome?

Description : What type of cell would have a cell wall cell membrane no nucleus and ribsome?

Last Answer : prokaryotic