Plasma membrane in eukaryotic cells is made up of - (1) Phospholipid (2) Lipoprotein (3) Phospholipo-protein (4) Phospho-protein

Plasma membrane in eukaryotic cells is made up of - (1) Phospholipid (2) Lipoprotein (3) Phospholipo-protein (4) Phospho-protein
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(1) Phospholipid Explanation: The cell membrane or plasma membrane is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings.
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Plasma membrane in eukaryotic cells is made up of (1) Phospholipid (2) Lipoprotein (3) Phospholipo-protein (4) Phospho-protein

Description : Plasma membrane in eukaryotic cells is made up of (1) Phospholipid (2) Lipoprotein (3) Phospholipo-protein (4) Phospho-protein

Last Answer : Phospholipid

The plasma membrane consists mainly of (a) phospholipids embedded in a protein bilayer (b) proteins embedded in a phospholipid bilayer (c) proteins embedded in a polymer of glucose molecules (d) proteins embedded in a carbohydrate bilayer

Description : The plasma membrane consists mainly of (a) phospholipids embedded in a protein bilayer (b) proteins embedded in a phospholipid bilayer (c) proteins embedded in a polymer of glucose molecules (d) proteins embedded in a carbohydrate bilayer

Last Answer : (b) proteins embedded in a phospholipid bilayer

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

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

Choose the correct statement(s) about actions of insulin: A. It favours translocation of glucose transporters from intracellular site to the plasma membrane B. It enhances transcription of lipoprotein lipase in vascular endothelium C. It increases production of the enzyme glucokinase D. All of the above

Description : Choose the correct statement(s) about actions of insulin: A. It favours translocation of glucose transporters from intracellular site to the plasma membrane B. It enhances transcription of lipoprotein ... vascular endothelium C. It increases production of the enzyme glucokinase D. All of the above

Last Answer : D. All of the above

Which of the following may be most likely to be missing from a gram-positive bacterium? A.Penicillin binding protein B.Peptidoglycan C.Lipopolysaccharide D.Phospholipid bilayer membrane

Description : Which of the following may be most likely to be missing from a gram-positive bacterium? A.Penicillin binding protein B.Peptidoglycan C.Lipopolysaccharide D.Phospholipid bilayer membrane

Last Answer : C.Lipopolysaccharide

The door to your house is like the __________________ of a cell membrane? (A) Phospholipid bilayer (B) Integral protein (C) Recognition protein (D) Peripheral protein

Description : The door to your house is like the __________________ of a cell membrane? (A) Phospholipid bilayer (B) Integral protein (C) Recognition protein (D) Peripheral protein

Last Answer : (B) Integral protein

Give an account of eukaryotic plasma membrane.

Description : Give an account of eukaryotic plasma membrane.

Last Answer : Give an account of eukaryotic plasma membrane.

In eubacteria, a cellular component that resembles eukaryotic cell is (a) plasma membrane (b) nucleus (c) ribosomes (d) cell wall.

Description : In eubacteria, a cellular component that resembles eukaryotic cell is (a) plasma membrane (b) nucleus (c) ribosomes (d) cell wall.

Last Answer : (a) plasma membrane

Thromboxane A2(TXA2): a. is derived from the membrane phospholipid b. its production is decreased by non-steroidal anti-inflammatory drugs c. causes platelet aggregation d. all above

Description : Thromboxane A2(TXA2): a. is derived from the membrane phospholipid b. its production is decreased by non-steroidal anti-inflammatory drugs c. causes platelet aggregation d. all above

Last Answer : all above

Assertion:- All the organelles of eukaryotic cells are surrounded by either single or double membrane. Reason:- In eukaryotic cell none of cell organe

Description : Assertion:- All the organelles of eukaryotic cells are surrounded by either single or double membrane. Reason:- In eukaryotic cell none of cell organe

Last Answer : Assertion:- All the organelles of eukaryotic cells are surrounded by either single or double membrane. ... D. If both Assertion & Reason are false.

Which of the following is not true for eukaryotic cells? A- Nucleus is bounded by nuclear membrane B- Chromosomes contain histones C- Chloroplasts and mitochondria contains 70S ribosomes D- Gas vacuoles are present

Description : Which of the following is not true for eukaryotic cells? A- Nucleus is bounded by nuclear membrane B- Chromosomes contain histones C- Chloroplasts and mitochondria contains 70S ribosomes D- Gas vacuoles are present

Last Answer : Gas vacuoles are present

Eukaryotic cells have extensive intracellular membranes, termed the endomembrane system, which divide the cell into structurally and functionally distinct compartments, or organelles. These include the inner cell membrane, nuclear envelope, endoplasmic reticulum, the Golgi apparatus, and lysosomes. Name a cellular component whose membrane is not part of the endomembrane system.

Description : Eukaryotic cells have extensive intracellular membranes, termed the endomembrane system, which divide the cell into structurally and functionally distinct compartments, or organelles. These include the inner cell ... . Name a cellular component whose membrane is not part of the endomembrane system.

Last Answer : Mitochondria; also chloroplasts

A non-functional plasma enzyme is (A) Psudocholinesterase (B) Lipoprotein lipase (C) Proenzyme of blood coagulation (D) Lipase

Description : A non-functional plasma enzyme is (A) Psudocholinesterase (B) Lipoprotein lipase (C) Proenzyme of blood coagulation (D) Lipase

Last Answer : Answer : D

An example of functional plasma enzyme is (A) Lipoprotein lipase (B) Amylase (C) Aminotransferase (D) Lactate dehydrogenase

Description : An example of functional plasma enzyme is (A) Lipoprotein lipase (B) Amylase (C) Aminotransferase (D) Lactate dehydrogenase

Last Answer : Answer : A

The triacyl glycerol present in plasma lipoproteins are hydrolyzed by (A) Linqual lipase (B) Pancreatic lipase (C) Colipase (D) Lipoprotein lipase

Description : The triacyl glycerol present in plasma lipoproteins are hydrolyzed by (A) Linqual lipase (B) Pancreatic lipase (C) Colipase (D) Lipoprotein lipase

Last Answer : Answer : D

The following is true of bezafibrate except: A. It activates lipoprotein lipase B. It mainly lowers serum triglyceride level with smaller effect on LDL cholesterol level C. It increases the incidence of myopathy due to statins D. It tends to lower plasma fibrinogen level

Description : The following is true of bezafibrate except: A. It activates lipoprotein lipase B. It mainly lowers serum triglyceride level with smaller effect on LDL cholesterol level C. It increases the incidence of myopathy due to statins D. It tends to lower plasma fibrinogen level

Last Answer : C. It increases the incidence of myopathy due to statins

Assertion: Chloroplasts are known as semiautonomus cell organelle. Reason: Chloroplast has lipoprotein membrane.

Description : Assertion: Chloroplasts are known as semiautonomus cell organelle. Reason: Chloroplast has lipoprotein membrane.

Last Answer : Assertion: Chloroplasts are known as semiautonomus cell organelle. Reason: Chloroplast has lipoprotein ... If both Assertion & Reason are false.

Lipoprotein present in cell membrane is by nature: (A) Hydrophilic (B) Hydrophobic (C) Both (A) and (B) (D) None of these

Description : Lipoprotein present in cell membrane is by nature: (A) Hydrophilic (B) Hydrophobic (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

Co-lipase is a (A) Bile salt (B) Vitamin (C) Protein (D) Phospholipid

Description : Co-lipase is a (A) Bile salt (B) Vitamin (C) Protein (D) Phospholipid

Last Answer : Answer : C

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

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

Which of the following events does not occur in rough endoplasmic reticulum? (a) Protein folding (b) Protein glycosylation (c) Cleavage of signal peptide (d) Phospholipid synthesis

Description : Which of the following events does not occur in rough endoplasmic reticulum? (a) Protein folding (b) Protein glycosylation (c) Cleavage of signal peptide (d) Phospholipid synthesis

Last Answer : (d) Phospholipid synthesis

Which of the following events does not occur in rough endoplasmic reticulum ? (1) Protein folding (2) Protein glycosylation (3) Cleavage of signal peptide (4) Phospholipid synthesis

Description : Which of the following events does not occur in rough endoplasmic reticulum ? (1) Protein folding (2) Protein glycosylation (3) Cleavage of signal peptide (4) Phospholipid synthesis

Last Answer : (4) Phospholipid synthesis

Which of the following macromolecules is primarily responsible for the insolubility of cell membranes in water? a) starch b) cellulose c) protein d) phospholipid

Description : Which of the following macromolecules is primarily responsible for the insolubility of cell membranes in water? a) starch b) cellulose c) protein d) phospholipid

Last Answer : ANSWER: D -- PHOSPHOLIPID

What is the protein syntesis in eukaryotic cells?

Description : What is the protein syntesis in eukaryotic cells?

Last Answer : Need answer

What is a difference between prokaryotic and eukaryotic cells in making protein? a. Eukayotes have introns that stay inside the nucleus b. Prokaryotes can transcribe and translate at the same time c. the process is faster in prokaryotes d. A-C are correct

Description : What is a difference between prokaryotic and eukaryotic cells in making protein? a. Eukayotes have introns that stay inside the nucleus b. Prokaryotes can transcribe and translate at the same time c. the process is faster in prokaryotes d. A-C are correct

Last Answer : d. A-C are correct

The three-dimensional network of protein filaments within the cytoplasm of eukaryotic cells is called the (A) Endoplasmic reticulum (B) Golgi apparatus (C) Cytoskeleton (D) None of these

Description : The three-dimensional network of protein filaments within the cytoplasm of eukaryotic cells is called the (A) Endoplasmic reticulum (B) Golgi apparatus (C) Cytoskeleton (D) None of these

Last Answer : (C) Cytoskeleton

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

What is a characteristic feature of acarrier protein in a plasma membrane ?

Description : What is a characteristic feature of acarrier protein in a plasma membrane ?

Last Answer : Carrier proteins are globular proteins which are specific it their action and thus regulate the entry and exit of particles into the cell. They help in the conduction of ionic substances and polar substances

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

The mode of action of polymyxin is to A- inhibit protein synthesis B- inhibit DNA synthesis C- injury to the plasma membrane D- inhibit folic acid synthesis

Description : The mode of action of polymyxin is to A- inhibit protein synthesis B- inhibit DNA synthesis C- injury to the plasma membrane D- inhibit folic acid synthesis

Last Answer : injury to the plasma membrane

Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the cytoplasm. C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Description : Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the ... activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Last Answer : C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes.

Which is associated with a steroid hormone? A) cyclic AMP B) the second messenger system C) production of new proteins D) activation of proteins present in an inactive form E) binding of a protein to a surface receptor on the plasma membrane

Description : Which is associated with a steroid hormone? A) cyclic AMP B) the second messenger system C) production of new proteins D) activation of proteins present in an inactive form E) binding of a protein to a surface receptor on the plasma membrane

Last Answer : C) production of new proteins

Depot fats of mammalian cells comprise mostly of (A) Cholesterol (B) Phospholipid (C) Cerebrosides (D) Triglycerol

Description : Depot fats of mammalian cells comprise mostly of (A) Cholesterol (B) Phospholipid (C) Cerebrosides (D) Triglycerol

Last Answer : Answer : D

The protein moiety of lipoprotein is known as (A) Apoprotein (B) Pre-protein (C) Post-protein (D) Pseudoprotein

Description : The protein moiety of lipoprotein is known as (A) Apoprotein (B) Pre-protein (C) Post-protein (D) Pseudoprotein

Last Answer : Answer : A

Lecithins combine with protein to form (A) Phosphoprotein (B) Mucoprotein (C) Lipoprotein (D) Glycoprotein

Description : Lecithins combine with protein to form (A) Phosphoprotein (B) Mucoprotein (C) Lipoprotein (D) Glycoprotein

Last Answer : Answer : C

Free fatty acids are transported in the blood (A) Combined with albumin (B) Combined with fatty acid binding protein (C) Combined with β -lipoprotein (D) In unbound free salts

Description : Free fatty acids are transported in the blood (A) Combined with albumin (B) Combined with fatty acid binding protein (C) Combined with β -lipoprotein (D) In unbound free salts

Last Answer : Answer : A

On the outside of the plasma membrane, _____ act as signals or markers to help cells recognize one another?

Description : On the outside of the plasma membrane, _____ act as signals or markers to help cells recognize one another?

Last Answer : carbohydrates

What cellular interactions are the cells of the stratum basale firmly attached to the plasma membrane?

Description : What cellular interactions are the cells of the stratum basale firmly attached to the plasma membrane?

Last Answer : Need answer

Insulin increases the permeability of glucose across the plasma membrane of muscle cells by (A) Acting on adenylate cycle (B) By loosening the integrity of the membrane (C) Through Ca2+ ions (D) By membrane cruting the hexose carries of intracellular organelles and making them fuse with the plasma membrane

Description : Insulin increases the permeability of glucose across the plasma membrane of muscle cells by (A) Acting on adenylate cycle (B) By loosening the integrity of the membrane (C) Through Ca2 ... membrane cruting the hexose carries of intracellular organelles and making them fuse with the plasma membrane

Last Answer : Answer : D

Which are the cholesterol esters that enter cells through the receptor-mediated endocytosis of lipoproteins hydrolyzed? (A) Endoplasmin reticulum (B) Lysosomes (C) Plasma membrane receptor (D) Mitochondria

Description : Which are the cholesterol esters that enter cells through the receptor-mediated endocytosis of lipoproteins hydrolyzed? (A) Endoplasmin reticulum (B) Lysosomes (C) Plasma membrane receptor (D) Mitochondria

Last Answer : B

A striking feature of living cells is a marked difference between the composition of the cytosol and the extracellular milieu. Which of the following statement(s) concerning the mechanisms of maintenance of these differences is/are true? a. The cell membrane is able to maintain a 10,000 fold gradient between the extracellular concentration of ionized calcium and the intracellular concentration b. The key to these differences is the fact that the plasma membrane is normally impermeable to sodium, potassium and calcium c. The selectivity of biologic membranes is highly consistent and seldom changes d. The selectivity of cell membranes relates only to ions and not organic compounds

Description : A striking feature of living cells is a marked difference between the composition of the cytosol and the extracellular milieu. Which of the following statement(s) concerning the mechanisms of maintenance ... d. The selectivity of cell membranes relates only to ions and not organic compounds

Last Answer : Answer: a The survival of the cell requires that cytosolic composition be maintained within narrow limits, despite the constant influx of nutrients and the simultaneous outflow of waste. A ... be altered drastically as a result of regulatory or signaling processes that occur within the cell

Bacterial cells do not have - (1) Cell wall (2) Plasma membrane (3) Ribosome (4) Mitochondria

Description : Bacterial cells do not have - (1) Cell wall (2) Plasma membrane (3) Ribosome (4) Mitochondria

Last Answer : (4) Mitochondria Explanation: Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Bacteria are prokaiyotes, which ... are cells that don't possess membrane-bound organelles. Mitochondria are membrane-bound organelles.

Plant cells are connected with the help of (A) Plsmodesmata (B) Cellwall (C) Plasma membrane (D) Plasmoderma

Description : Plant cells are connected with the help of (A) Plsmodesmata (B) Cellwall (C) Plasma membrane (D) Plasmoderma

Last Answer : (A) Plsmodesmata

The formation of _____ by_____ directly lyses and kills pathogens. a. Membrane Attack Complexes, complement b. Inflammation, lymph nodes c. antibodies, plasma cells d. Plasma cells, B cells

Description : The formation of _____ by_____ directly lyses and kills pathogens. a. Membrane Attack Complexes, complement b. Inflammation, lymph nodes c. antibodies, plasma cells d. Plasma cells, B cells

Last Answer : a. Membrane Attack Complexes, complement

Which of the following elements is not found in normal periodontal membrane: A. Fibroblast B. Epithelial cells C. Erythrocytes D. Vest cells of malaise E. Inflammatory plasma cells and lymphocytes

Description : Which of the following elements is not found in normal periodontal membrane: A. Fibroblast B. Epithelial cells C. Erythrocytes D. Vest cells of malaise E. Inflammatory plasma cells and lymphocytes

Last Answer : C. Erythrocytes

Which are the cholesterol esters that enter cells through the receptor-mediated endocytosis of lipoproteins hydrolyzed? (A) Endoplasmin reticulum (B) Lysosomes (C) Plasma membrane receptor (D) Mitochondria

Description : Which are the cholesterol esters that enter cells through the receptor-mediated endocytosis of lipoproteins hydrolyzed? (A) Endoplasmin reticulum (B) Lysosomes (C) Plasma membrane receptor (D) Mitochondria

Last Answer : (B) Lysosomes

Bacterial cells do not have (1) Cell wall (2) Plasma membrane (3) Ribosome (4) Mitochondria

Description : Bacterial cells do not have (1) Cell wall (2) Plasma membrane (3) Ribosome (4) Mitochondria

Last Answer : Mitochondria

Name the non -membrane bound cell or- ganelle which is present in both eukaryotic and prokaryotic cell?

Description : Name the non -membrane bound cell or- ganelle which is present in both eukaryotic  and prokaryotic cell?

Last Answer : Ribosomes