The cell wall of both bacteria and cyanobactena contains: (a) Lipid (b) Pectin (c) Protein (d) muramic acid

The cell wall of both bacteria and cyanobactena contains: (a) Lipid (b) Pectin (c) Protein (d) muramic acid
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The last step in synthesis of peptidoglycan is A- attachment of a peptide to muramic acid B- attaching two amino acids to form a cross-link C- attachment of a portion of peptidoglycan to a membrane lipid D- binding of penicillin to a membrane protein

Description : The last step in synthesis of peptidoglycan is A- attachment of a peptide to muramic acid B- attaching two amino acids to form a cross-link C- attachment of a portion of peptidoglycan to a membrane lipid D- binding of penicillin to a membrane protein

Last Answer : attaching two amino acids to form a cross-link

Penicillins interfere with bacterial cell wall synthesis by (a) Inhibiting synthesis of N-acetyl muramic acid pentapeptide (b) Inhibiting conjugation between N-acetyl muramic acid and N-acetyl glucosamine (c) Inhibiting transpeptidases and carboxy peptidases which cross link the peptidoglycan residues (d) Counterfeiting for D-alanine in the bacterial cell wall

Description : Penicillins interfere with bacterial cell wall synthesis by (a) Inhibiting synthesis of N-acetyl muramic acid pentapeptide (b) Inhibiting conjugation between N-acetyl muramic acid and N-acetyl ... link the peptidoglycan residues (d) Counterfeiting for D-alanine in the bacterial cell wall

Last Answer : Ans: C

Penicillins interfere with bacterial cell wall synthesis by: A. Inhibiting synthesis of N-acetyl muramic acid pentapeptide B. Inhibiting conjugation between N-acetyl muramic acid and N-acetyl glucosamine C. Inhibiting transpeptidases and carboxypeptidases which cross link the peptidoglycan residues D. Counterfeiting for D-alanine in the bacterial cell wall

Description : Penicillins interfere with bacterial cell wall synthesis by: A. Inhibiting synthesis of N-acetyl muramic acid pentapeptide B. Inhibiting conjugation between N-acetyl muramic acid and N-acetyl ... cross link the peptidoglycan residues D. Counterfeiting for D-alanine in the bacterial cell wall

Last Answer : C. Inhibiting transpeptidases and carboxypeptidases which cross link the peptidoglycan residues

The living cells having thickening at the corners due to deposition of pectin are known as

Description : The living cells having thickening at the corners due to deposition of pectin are known as

Last Answer : The living cells having thickening at the corners due to deposition of pectin are known as – Collenchyma cells.

Virus contains - (1) Protein and lipid (2) Nucleic acid and protein (3) Lipid and carbohydrate (4) Carbohydrate and nucleic acid

Description : Virus contains - (1) Protein and lipid (2) Nucleic acid and protein (3) Lipid and carbohydrate (4) Carbohydrate and nucleic acid

Last Answer : (1) Protein and lipid Explanation: Virus particles (known as virions) consist of two or three parts: the genetic material made from either DNA or RNA, long molecules that carry genetic ... cell. The shapes of viruses range from simple helical and icosahedra forms to more complex structures.

Virus contains (1) Protein and lipid (2) Nucleic acid and protein (3) Lipid and carbohydrate (4) Carbohydrate and nucleic acid

Description : Virus contains (1) Protein and lipid (2) Nucleic acid and protein (3) Lipid and carbohydrate (4) Carbohydrate and nucleic acid

Last Answer : Protein and lipid

Middle lamella is composed mainly of (a) muramic acid (b) calcium pectate (c) phosphoglycerides (d) hemicellulose.

Description : Middle lamella is composed mainly of (a) muramic acid (b) calcium pectate (c) phosphoglycerides (d) hemicellulose.

Last Answer : (b) calcium pectate

Peptidoglycan is also known as A- N-acetyl muramic acid B- mureinmucopeptide C- N acetylglucosamine D- mesodiaminopimetic acid

Description : Peptidoglycan is also known as A- N-acetyl muramic acid B- mureinmucopeptide C- N acetylglucosamine D- mesodiaminopimetic acid

Last Answer : mureinmucopeptide

In which process of plant protoplasm and cell wall absorbs water ?

Description : In which process of plant protoplasm and cell wall absorbs water ?

Last Answer : The plant absorbs water in the process of protoplasm and cell wall adsorption.

What is the cell wall made of ?

Description : What is the cell wall made of ?

Last Answer : The cell wall is made up of cellulose.

Which of the following are true archaebacteria? (1) Extreme halophiles (2) Extreme thermophyles (3) Methanogens (4) Presence of peptidoglycan cell wall Ans. (a) 43; Which of the following are endangered plants ? (1) Saintpaulia ionantha (2) Ceratozamia hildae (3) Punica granatum (4) Senecio hadrasomum

Description : Which of the following are true archaebacteria? (1) Extreme halophiles (2) Extreme thermophyles (3) Methanogens (4) Presence of peptidoglycan cell wall Ans. (a) 43; Which of the following are ... plants ? (1) Saintpaulia ionantha (2) Ceratozamia hildae (3) Punica granatum (4) Senecio hadrasomum

Last Answer : Ans. ((c))

Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Description : Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Last Answer : Ans. ((a))

SO2 pollution causes a) Plasmolysis b) Destruction of cell wall c) Destruction of Golgi bodies

Description : SO2 pollution causes a) Plasmolysis b) Destruction of cell wall c) Destruction of Golgi bodies

Last Answer : c) Destruction of Golgi bodies

The process by which the amount of DNA, RNA and protein can be known at a time is: (a) Cell fractionation (b) Autoradiography (c) Phase-contrast microscopy (d) Tissue culture

Description : The process by which the amount of DNA, RNA and protein can be known at a time is: (a) Cell fractionation (b) Autoradiography (c) Phase-contrast microscopy (d) Tissue culture

Last Answer : Ans. ((b))

Which of the following is true about cell wall of gram-positive bacteria? A- It consists of multiple layers B- It is thicker than that associated with gram-negative bacteria C- It contains teichoic acids D- D.All of these

Description : Which of the following is true about cell wall of gram-positive bacteria? A- It consists of multiple layers B- It is thicker than that associated with gram-negative bacteria C- It contains teichoic acids D- D.All of these

Last Answer : D.All of these

Which of the following is true about cell wall of gram-positive bacteria? A-It consists of multiple layers B- It is thicker than that associated with gram-negative bacteria C- It contains teichoic acids D- All of these

Description : Which of the following is true about cell wall of gram-positive bacteria? A-It consists of multiple layers B- It is thicker than that associated with gram-negative bacteria C- It contains teichoic acids D- All of these

Last Answer : All of these

Consider the following statements: The genetic code said to be degenerate and universal which means that, (1) Amino afids may have more than one codon (2) All amino acids have mo than one codon (3) Codons are common for higher and lower organism (4) Codons are not found in bacteria

Description : Consider the following statements: The genetic code said to be degenerate and universal which means that, (1) Amino afids may have more than one codon (2) All amino acids have mo than one codon (3) Codons are common for higher and lower organism (4) Codons are not found in bacteria

Last Answer : Ans. ((d))

In the bacteria: (1) Mesosome is present (2) Nucleoid represents the genome (3) Ribosomes are found in cytoplasm (4) Histone proteins complexed with DNA

Description : In the bacteria: (1) Mesosome is present (2) Nucleoid represents the genome (3) Ribosomes are found in cytoplasm (4) Histone proteins complexed with DNA

Last Answer : Ans. ((a))

Cyanide resistant respiration is characteristic of: (a) Viruses (b) Bacteria (c) Plants (d) Animals

Description : Cyanide resistant respiration is characteristic of: (a) Viruses (b) Bacteria (c) Plants (d) Animals

Last Answer : Ans. ((c))

Golgi apparatus is absent in (a) Higher plants (b) Yeast (c) Bacteria and blue-green algae (d) Liver cells

Description : Golgi apparatus is absent in (a) Higher plants (b) Yeast (c) Bacteria and blue-green algae (d) Liver cells

Last Answer : Ans. ((c))

Azotobacter and Beijerinckia are the examples of (a) Symbiotic nitrogen-fixers (b) Non-symbiotic nitrogen-fixers (c) Ammonifying bacteria (d) Disease causing bacteria

Description : Azotobacter and Beijerinckia are the examples of (a) Symbiotic nitrogen-fixers (b) Non-symbiotic nitrogen-fixers (c) Ammonifying bacteria (d) Disease causing bacteria

Last Answer : Ans. ((b))

Select the correct statement: (a) Legumes are incapable of fixing nitrogen (b) Legumes fix nitrogen through bacteria living in fruits root (c) Legumes fix nitrogen only by bacteria present in nodules (d) None of the above

Description : Select the correct statement: (a) Legumes are incapable of fixing nitrogen (b) Legumes fix nitrogen through bacteria living in fruits root (c) Legumes fix nitrogen only by bacteria present in nodules (d) None of the above

Last Answer : Ans. (c)

The most effective agents of bioremediation at ultra level will be a. Plants b. Worms c. Bacteria d. Insects

Description : The most effective agents of bioremediation at ultra level will be a. Plants b. Worms c. Bacteria d. Insects

Last Answer : c. Bacteria

An enzyme is a (A) Carbohydrate (B) Lipid (C) Protein (D) Nucleic acid ENZYMES 171

Description : An enzyme is a (A) Carbohydrate (B) Lipid (C) Protein (D) Nucleic acid ENZYMES 171

Last Answer : Answer : C

The major organic cementing agent in soil aggregate formation is a. Protein b. Lipid c. Polysaccharides d. Organic acid

Description : The major organic cementing agent in soil aggregate formation is a. Protein b. Lipid c. Polysaccharides d. Organic acid

Last Answer : c. Polysaccharides

The basic structure of cell membranes (a) Is a lipid bilayer that serves as a barrier to water soluble molecules (b) Differs ultra structurally for internal and external membranes of cell (c) Is best described as lipids dispersed within a protein bilayer (d) Is visualised as bilaminar structure with transmission electron microscopy

Description : The basic structure of cell membranes (a) Is a lipid bilayer that serves as a barrier to water soluble molecules (b) Differs ultra structurally for internal and external membranes ... dispersed within a protein bilayer (d) Is visualised as bilaminar structure with transmission electron microscopy

Last Answer : Ans:(a)

Which of the following statement(s) is/are true concerning the cell plasma membrane? a. The plasma membrane is composed of amphipathic molecules b. The hydrophobic core of the lipid bilayer of the cell membrane contains specialized transport proteins which maintain the intracellular ionic milieu different from the extracellular fluid c. Plasma membrane proteins extend externally and bear phospholipid moieties which contribute to the cell coat d. The membrane proteins of nerve cells are highly voltage-dependent

Description : Which of the following statement(s) is/are true concerning the cell plasma membrane? a. The plasma membrane is composed of amphipathic molecules b. The hydrophobic core of the lipid bilayer of the ... contribute to the cell coat d. The membrane proteins of nerve cells are highly voltage-dependent

Last Answer : Answer: a, b, d The plasma membrane defines the boundary of the cell and serves to contain and concentrate enzymes and other macromolecule constituents. The plasma membrane is ... and bear carbohydrate moieties primarily as oligosaccharide chains that contribute to the cell coat or glycocalyx

The process through which the amount of DNA, RNA and protein can be known at a time is called (a) Autoradiography (b) Tissue culture (c) Cellular fractioning (d) Phase contrast microscopy

Description : The process through which the amount of DNA, RNA and protein can be known at a time is called (a) Autoradiography (b) Tissue culture (c) Cellular fractioning (d) Phase contrast microscopy

Last Answer : Ans. ((c))

Ribozyme is: (a) enzyme (b) RNA with enzymatic activity (c) Hormone (d) Protein

Description : Ribozyme is: (a) enzyme (b) RNA with enzymatic activity (c) Hormone (d) Protein

Last Answer : Ans. ((b))

Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Description : Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Last Answer : Ans. ((d))

The newspaper contains one of the following toxic material a) Mg b) Cd c) Pb d) Hg.

Description : The newspaper contains one of the following toxic material a) Mg b) Cd c) Pb d) Hg. 

Last Answer : b) Cd 

Rootex contains a) Auxins b) ABA c) Kinetin d) Ethylene

Description : Rootex contains a) Auxins b) ABA c) Kinetin d) Ethylene

Last Answer : a) Auxins

Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.

Description : Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.

Last Answer : (a) When pollen is shed at two-celled stage, double fertilisation does not take place.

The membrane protein that extend through both sides of lipid bilayer.

Description : The membrane protein that extend through both sides of lipid bilayer. (a) Acidic protein (b) Glycoprotein © Intrinsic protein (d) Glycolic acid

Last Answer : Answer: c Intrinsic protein

The species of bacteria, which possesses 250 genes for lipid biosynthesis is A- M. genitalium B- M. tuberculosis C- E. coli D-H. influenza

Description : The species of bacteria, which possesses 250 genes for lipid biosynthesis is A- M. genitalium B- M. tuberculosis C- E. coli D-H. influenza

Last Answer : M. tuberculosis

The following are true about atherosclerosis: C A. it often occurs in the heart chamber B. foamy macrophages are not seen in the lesion C. smooth muscle cells proliferation in the intima of vessel D. no deposition of lipid occurs in wall of blood vessel

Description : The following are true about atherosclerosis: C A. it often occurs in the heart chamber B. foamy macrophages are not seen in the lesion C. smooth muscle cells proliferation in the intima of vessel D. no deposition of lipid occurs in wall of blood vessel

Last Answer : smooth muscle cells proliferation in the intima of vessel

Ratio of protein and lipid in the membrane of erythrocytes of human being is :-

Description : Ratio of protein and lipid in the membrane of erythrocytes of human being is :-

Last Answer : Ratio of protein and lipid in the membrane of erythrocytes of human being is :- A. 1.8 B. 1.3 C. 0.8 D. 0.6

Humans most easily tolerate a lack of the nutrient: (A) Protein (B) Lipid (C) Iodine (D) Carbohydrate

Description : Humans most easily tolerate a lack of the nutrient: (A) Protein (B) Lipid (C) Iodine (D) Carbohydrate

Last Answer : Answer : D

Humans most easily tolerate a lack of which of the following nutrients? (A) Protein (B) Iodine (C) Carbohydrate (D) Lipid

Description : Humans most easily tolerate a lack of which of the following nutrients? (A) Protein (B) Iodine (C) Carbohydrate (D) Lipid

Last Answer : Answer : C

Michaelis – Menten equation is used to explain the effect of substrate concentration on (A) Carbohydrate (B) Enzyme (C) Lipid (D) Protein

Description : Michaelis – Menten equation is used to explain the effect of substrate concentration on (A) Carbohydrate (B) Enzyme (C) Lipid (D) Protein

Last Answer : Answer : B

The building up and breaking down of protoplasm are concerned with the metabolism of (A) Carbohydrate (B) Lipid (C) Protein (D) Minerals

Description : The building up and breaking down of protoplasm are concerned with the metabolism of (A) Carbohydrate (B) Lipid (C) Protein (D) Minerals

Last Answer : Answer : C

Answer: a, b, c, d Free oxygen radicals are chemical species that are intermediates in the normal process of cellular respiration. Oxidants that are free radicals have been implicated as initiators of reactions which lead to a variety of cellular injuries. Oxidants are derived from several sources, notably phagocytes. Among the effects of oxygen free radicals are membrane lipid peroxidation, DNA strand breaks, cytoskeletal disassembly and inhibition of glucose metabolism leading to decreased cellular ATP concentrations. (Figure 6-16) 187 Which of the following acute-phase protein levels are increased in human plasma following acute inflammation? a. C-reactive protein b. Serum amyloid c. a -Proteinase inhibitor d. Fibrinogen e. Albumin

Description : Answer: a, b, c, d Free oxygen radicals are chemical species that are intermediates in the normal process of cellular respiration. Oxidants that are free radicals have been implicated as initiators of ... a. C-reactive protein b. Serum amyloid c. a -Proteinase inhibitor d. Fibrinogen e. Albumin

Last Answer : Answer: a, b, c, d The acute-phase response is a series of homeostatic responses of the organism to tissue injury in infection and inflammation. After an inflammatory stimulus occurs, a number ... 30% to 50% of the level before injury. The reason for the decrease in production is poorly understood

The hormone insulin is chemically a (a) fat (b) lipid (c) protein (d) carbohydrate

Description : The hormone insulin is chemically a (a) fat (b) lipid (c) protein (d) carbohydrate

Last Answer : Ans:(c)

Nitrogenous food is (1) Carbohydrate (2) Lipid (3) Protein (4) Salts

Description : Nitrogenous food is (1) Carbohydrate (2) Lipid (3) Protein (4) Salts

Last Answer : (3) Protein Explanation: All proteins contain nitrogen. Precisely, they contain about 16 per cent nitrogen. The determination of protein requirement is based,on nitrogen balance, which include total nitrogen in food and excreta.

Exon part of mRNAs have code for (a) protein (b) lipid (c) carbohydrate (d) phospholipid.

Description : Exon part of mRNAs have code for (a) protein (b) lipid (c) carbohydrate (d) phospholipid.

Last Answer : b) lipid

Hygrometer is used to measure the a. Water content b. protein contents c. lipid contents d. mineral contents

Description : Hygrometer is used to measure the a. Water content b. protein contents c. lipid contents d. mineral contents

Last Answer : Water conten

Exon part of mRNAs have code for (a) protein (b) lipid (c) carbohydrate (d) phospholipid.

Description : Exon part of mRNAs have code for (a) protein (b) lipid (c) carbohydrate (d) phospholipid.

Last Answer : (a) protein

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

Collagen is (a) fibrous protein (b) globular protein (c) lipid (d) carbohydrate.

Description : Collagen is (a) fibrous protein (b) globular protein (c) lipid (d) carbohydrate.

Last Answer : (a) fibrous protein

Dolichol phosphate is A- a complex lipid involved in docking vesicles with the plasma membrane B- the anchor on which sugars assemble before transfer to proteins C- a chaperone used in protein folding D- a product of phospholipase C activation

Description : Dolichol phosphate is A- a complex lipid involved in docking vesicles with the plasma membrane B- the anchor on which sugars assemble before transfer to proteins C- a chaperone used in protein folding D- a product of phospholipase C activation

Last Answer : the anchor on which sugars assemble before transfer to proteins