What are the factors on which permeability of a membrane depends on? -Biology

What are the factors on which permeability of a membrane depends on? -Biology
by

1 Answer

Answer :

answer:
by

Related questions

At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Description : At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Last Answer : At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Description : At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Last Answer : At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

What do the terms selective permeability and semi permeable to have to do with the cell membrane?

Description : What do the terms selective permeability and semi permeable to have to do with the cell 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

Binding of acetylcholine to its receptors increases the permeability of cell membrane to (A) Ca++ (B) Na+ (C) K+ (D) Na+ and K+

Description : Binding of acetylcholine to its receptors increases the permeability of cell membrane to (A) Ca++ (B) Na+ (C) K+ (D) Na+ and K+

Last Answer : Answer : D

Binding of gamma-aminobutyric acid to its receptors in brain increases the permeability of cell membrane to (A) Cl– (B) Na+ (C) K+ (D) Ca++

Description : Binding of gamma-aminobutyric acid to its receptors in brain increases the permeability of cell membrane to (A) Cl– (B) Na+ (C) K+ (D) Ca++

Last Answer : Answer : A

Electron transport and phosphorylation can be uncoupled by compounds that increase the permeability of the inner mitochondrial membrane to (A) Electrons (B) Protons (C) Uncouplers (D) All of these

Description : Electron transport and phosphorylation can be uncoupled by compounds that increase the permeability of the inner mitochondrial membrane to (A) Electrons (B) Protons (C) Uncouplers (D) All of these

Last Answer : B

Local anesthetics: A. Inhibit transmission of nerve impulses by increasing sodium membrane permeability and the displacement of ionized calcium. B. Are classified as amides or esters. C. Produce peripheral vasodilation. D. Are weak acids.

Description : Local anesthetics: A. Inhibit transmission of nerve impulses by increasing sodium membrane permeability and the displacement of ionized calcium. B. Are classified as amides or esters. C. Produce peripheral vasodilation. D. Are weak acids.

Last Answer : Answer: BC DISCUSSION: Local anesthetics act within the nerve membrane, where they inhibit transmission of nerve impulses by reducing sodium membrane permeability and the displacement of ionized ... based on this bond. All local anesthetics except cocaine produce vasodilatation and are weak bases

The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes and inhibit bacterial protein synthesis (c) They bind to 50S ribosomes and interfere with translocation of the growing peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria

Description : The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes ... peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : Ans: B

The primary mechanism underlying the resistance of gram-positive organisms to macrolide antibiotics is (a) Methylation of binding sites on the 50S ribosomal subunit (b) Formation of esterases that hydrolyze the lactone ring (c) Increased activity of efflux mechanisms (d) Formation of drug-inactivating acetyltranferases (e) Decreased drug permeability of the cytoplasmic membrane

Description : The primary mechanism underlying the resistance of gram-positive organisms to macrolide antibiotics is (a) Methylation of binding sites on the 50S ribosomal subunit (b) Formation of ... ) Formation of drug-inactivating acetyltranferases (e) Decreased drug permeability of the cytoplasmic membrane

Last Answer : Ans: A

Concerning permeability what type of membrane is the cell membrane ?

Description : Concerning permeability what type of membrane is the cell membrane ?

Last Answer : The cell membrane is a selectively permeable membrane, i.e., it allows the passage of water and some selected solutes. Cell Membrane Review - Image Diversity: cell membrane

The following are true about an action potential in a nerve fibre: a. it occurs when its membrane potential is hyperpolarized b. it is associated with a transient increase in membrane permeability to sodium c. there is a decreased in membrane permeability to potassium d. it has an amplitude which varies directly to the strength of stimulus

Description : The following are true about an action potential in a nerve fibre: a. it occurs when its membrane potential is hyperpolarized b. it is associated with a transient increase in membrane ... permeability to potassium d. it has an amplitude which varies directly to the strength of stimulus

Last Answer : there is a decreased in membrane permeability to potassium

In the neurone: a. the magnitude of the action potential is dependent on the strength of the stimulus b. impulses can travel in both direction c. depolarization is accompanied by increased permeability of the cell membrane to potassium ions d. during depolarization, the potential of the neurone changes from -70mV to +40mV

Description : In the neurone: a. the magnitude of the action potential is dependent on the strength of the stimulus b. impulses can travel in both direction c. depolarization is accompanied by increased ... potassium ions d. during depolarization, the potential of the neurone changes from -70mV to +40mV

Last Answer : during depolarization, the potential of the neurone changes from -70mV to +40mV

The resting membrane potential of a cell a. is dependent on the permeability of the cell membrane to K+ being greater than the permeability to Na+ b. falls to zero immediately when Na+, K+ ATPase in the membrane is inhibited c. is usually equal to the equilibrium potential for K+ d. is usually equal to the equilibrium potential for Na+ e. is markedly altered if the extracellular Na+ concentration is increased

Description : The resting membrane potential of a cell a. is dependent on the permeability of the cell membrane to K+ being greater than the permeability to Na+ b. falls to zero immediately when Na+ ... the equilibrium potential for Na+ e. is markedly altered if the extracellular Na+ concentration is increased

Last Answer : is dependent on the permeability of the cell membrane to K+ being greater than the permeability to Na+

How does steroid hormone influence the cellular activities? (a) Using aquaporin channels ‘as second messenger’ (b) Changing the permeability of the cell membrane (c) Binding to DNA and forming a gene-hormone complex (d) Activating cyclic AMP located on the cell membrane

Description : How does steroid hormone influence the cellular activities? (a) Using aquaporin channels ‘as second messenger’ (b) Changing the permeability of the cell membrane (c) Binding to DNA and forming a gene-hormone complex (d) Activating cyclic AMP located on the cell membrane

Last Answer : (c) Binding to DNA and forming a gene-hormone complex

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because (a) a proton gradient forms across the inner membrane(b) there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP) (c) high energy bonds are formed in mitochondrial proteins (d) ADP is pumped out of the matrix into the intermembrane space.

Description : The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because (a) a proton gradient forms across the inner membrane (b) there is a ... mitochondrial proteins (d) ADP is pumped out of the matrix into the intermembrane space.

Last Answer : (a) a proton gradient forms across the inner membrane

Commercial scale production of amino acids is typically carried out using A- regulatory mutants to cause overproduction of biochemical intermediates B- creation of an intentional increase in membrane permeability to increase release of the amino acids C- both (a) and (b) D- none of the above

Description : Commercial scale production of amino acids is typically carried out using A- regulatory mutants to cause overproduction of biochemical intermediates B- creation of an intentional increase in membrane permeability to increase release of the amino acids C- both (a) and (b) D- none of the above

Last Answer : both (a) and (b)

The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes and inhibit bacterial protein synthesis C. They bind to 50S ribosomes and interfere with translocation of the growing peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Description : The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes ... peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : B. They bind to 30S ribosomes and inhibit bacterial protein synthesis

Actions of 5-HT2 receptor activation are primarily mediated by: A. Increased membrane permeability to Na+ ions B. Increased formation of cAMP C. Activation of guanylyl cyclase D. Generation of inositol trisphosphate and diacyl glycerols

Description : Actions of 5-HT2 receptor activation are primarily mediated by: A. Increased membrane permeability to Na+ ions B. Increased formation of cAMP C. Activation of guanylyl cyclase D. Generation of inositol trisphosphate and diacyl glycerols

Last Answer : D. Generation of inositol trisphosphate and diacyl glycerols

For the flow of gases through a capillary, with increase in temperature, the permeability __________ as per Knudsen law. (A) Increases (B) Decreases (C) Remain same (D) Either (A) or (B); depends on the gas

Description : For the flow of gases through a capillary, with increase in temperature, the permeability __________ as per Knudsen law. (A) Increases (B) Decreases (C) Remain same (D) Either (A) or (B); depends on the gas

Last Answer : (A) Increases

1. Which right conferred by the Constitution of India is also available to non-citizens? 2. What is the relative permeability of a paramagnetic material? 3. The United Nations declared 2008 as which International Year? 4. On which thing Erosion of soil by a river mainly depends? 5. What was the main basis of social organization in India during the early medieval period?

Description : 1. Which right conferred by the Constitution of India is also available to non-citizens? 2. What is the relative permeability of a paramagnetic material? 3. The United Nations declared 2008 as ... with which countries? 20. The Upanishads were translated into Persian by the orders of which rular?

Last Answer : Answer : 1. Freedom to speech 2. Greater than unity 3. Planet Earth 4. Its speed at which it flows 5. Caste 6. US 7. Hyderabad 8. Right to Education 9. 35 gm 10. Land revenue system 11. ... Sher Shah 16. Exonuclease 17. Second year 18. Increases 19. Lebanon, Syria, Turkey and Jordan 20. Dara Shikoh

Platelets have a wide array of functions in inflammation. Which of the following are among these? a. Synthesis and release of vasoactive eicosanoids b. Release of chemotactic factors c. Adherence to and coating of bacterial and tumor cells d. Increase of vascular permeability e. Phagocytosis of bacteria

Description : Platelets have a wide array of functions in inflammation. Which of the following are among these? a. Synthesis and release of vasoactive eicosanoids b. Release of chemotactic factors c. ... coating of bacterial and tumor cells d. Increase of vascular permeability e. Phagocytosis of bacteria

Last Answer : Answer: a, b, c, d Platelets are anucleated cells derived from megakaryocytes in the bone marrow. Their central role in hemostasis is well known. Platelets possess a wide ... primitive precursor inflammatory cell. Platelets serve primarily as an amplifier or modulator of the inflammatory response

The main factors affecting the permeability of concrete are (i)Grade of concrete (ii)Minimum cement content (iii)Maximum water cement ratio [ A ] i [ B ] i and ii [ C ] ii and iii [ D ] i, ii and iii

Description : The main factors affecting the permeability of concrete are (i)Grade of concrete (ii)Minimum cement content (iii)Maximum water cement ratio [ A ] i [ B ] i and ii [ C ] ii and iii [ D ] i, ii and iii

Last Answer : [ C ] ii and iii

The main factors affecting the permeability of concrete are (i)Grade of concrete (ii)Minimum cement content (iii)Maximum water cement ratio [ A ] i [ B ] i and ii [ C ] ii and iii [ D ] i, ii and iii

Description : The main factors affecting the permeability of concrete are (i)Grade of concrete (ii)Minimum cement content (iii)Maximum water cement ratio [ A ] i [ B ] i and ii [ C ] ii and iii [ D ] i, ii and iii

Last Answer : [ C ] ii and iii

State the factors affecting permeability.

Description : State the factors affecting permeability.

Last Answer : Followings are the factors which affect permeability: 1. Particle Size or diameter of soil particle 2. Impurities in water 3. Void ratio 4. Degree of Saturation 5. Adsorbed water 6. ... layer 8. Properties of pore fluid i.e. viscosity and temperature 9. Shape of particle

Define magnetic permeability. State and explain the factors affecting permeability of magnetic materials

Description : Define magnetic permeability. State and explain the factors affecting permeability of magnetic materials

Last Answer : Permeability : The capability of the magnetic material to conduct the magnetic flux is known as permeability. Permeability and hysteresis loss are inversely related to each other. Factors ... impurities affect the geometric pattern of the crystals and are harmful to the magnetic property. 

The ability of the cell membrane to act as a selective barrier depends upon (A) The lipid composition of the membrane (B) The pores which allows small molecules (C) The special mediated transport systems (D) All of these

Description : The ability of the cell membrane to act as a selective barrier depends upon (A) The lipid composition of the membrane (B) The pores which allows small molecules (C) The special mediated transport systems (D) All of these

Last Answer : D

Cell regulation can be thought of as the effector side of cell communication. Most commonly cell regulation occurs by means of extracellular chemical messengers. Which of the following statement(s) is/are true concerning these messengers? a. Paracrine regulation involves a messenger which is produced and acts systemically b. The extracellular signal or stimulus is received by a receptor on or in the target cell c. Neurocrine regulation depends on a physical connection between the neuron and the target cell d. Most hormones, local mediators, and neurotransmitters readily cross the cell plasma membrane

Description : Cell regulation can be thought of as the effector side of cell communication. Most commonly cell regulation occurs by means of extracellular chemical messengers. Which of the following statement(s ... d. Most hormones, local mediators, and neurotransmitters readily cross the cell plasma membrane

Last Answer : Answer: b, c Depending on how the extracellular messenger arrives, cell regulation can be classified as paracrine, endocrine, or neurocrine. In paracrine regulation, a chemical messenger ... , local mediators, and neurotransmitters are water-soluble and cannot readily cross the plasma membrane

Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements. (1) Vitamin A derivatives are formed from carotene. (2) The photopigments are embedded in the membrane discs of the inner segment. (3) Retinal is a derivative of vitamin A. (4) Retinal is a light absorbing part of all the visual photopigments. (a) (1), (3) and (4) (b) (1) and (3) (c) (2), (3) and (4) (d) (1) and (2)

Description : Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements. (1) Vitamin A derivatives are formed from carotene. (2) The photopigments are embedded in the membrane discs of the inner ... (1) and (3) (c) (2), (3) and (4) (d) (1) and (2)

Last Answer : (b) (1) and (3)

Good vision depends on adequate intake of carotene rich food : Select the best option from the following statements : (a) Vitamin A derivatives are formed from carotene (b) The photopigments are embedded in the membrane discs of the inner segment (c) Retinal is a derivative of Vitamin A (d) Retinal is a light absorbing part of all the visual photopigments Options : (1) (a), (c) and (d) (2) (a) and (c) (3) (b), (c) and (d) (4) (a) and (b)

Description : Good vision depends on adequate intake of carotene rich food : Select the best option from the following statements : (a) Vitamin A derivatives are formed from carotene (b) The photopigments are embedded in the membrane discs of the inner segment ... (a) and (c) (3) (b), (c) and (d) (4) (a) and (b)

Last Answer : (1) (a), (c) and (d)

The alternate complement pathway doesn’t involve (A) Antigen-antibody complex (B) Complement 3 (C) Factors B and D (D) Membrane attack unit

Description : The alternate complement pathway doesn’t involve (A) Antigen-antibody complex (B) Complement 3 (C) Factors B and D (D) Membrane attack unit

Last Answer : Answer : A

The component system forms a membrane attack complex made up of (A) Complements 1q, 1r and 1s (B) Complements 1, 2, 3 and 4 (C) Complements 5b, 6, 7 and 8 (D) Factors B and D

Description : The component system forms a membrane attack complex made up of (A) Complements 1q, 1r and 1s (B) Complements 1, 2, 3 and 4 (C) Complements 5b, 6, 7 and 8 (D) Factors B and D

Last Answer : Answer : D

Factors responsible for membrane fouling

Description : Factors responsible for membrane fouling

Last Answer : Factors responsible for membrane fouling: Membrane fouling in almost all membrane processes is normally caused by precipitation and deposition of molecules or particulates on the membrane surface or membrane pores. The consequences of ... 4.Floc size 5. Alkalinity and pH 6.Salinity

If the size of the elements is small, the final solution is expected to be accurate. a.more b.less c.depends on other factors d.can't say

Description : If the size of the elements is small, the final solution is expected to be accurate. a.more b.less c.depends on other factors d.can't say

Last Answer : a.more

Mention the factors on which the land-use pattern of India depends on. -Geography

Description : Mention the factors on which the land-use pattern of India depends on. -Geography

Last Answer : There are two main factors on which the land use pattern of India depends upon. The factors are- Physical factors and Human factors : 1. Physical factors: The physical factors ... factors: The human factors comprise population density, culture, and traditions, technological capability, etc.

Name some factors on which farming practice in India depends. -Geography

Description : Name some factors on which farming practice in India depends. -Geography

Last Answer : Due to a long growing season, various types of soils, climate, and large agricultural area, India is an important producer of many crops. The factors on which farming practice in India ... b) Socio-economic factors which include demand for food/cash crops, technology, labour and organization.

Name any two factors on which resource development depends. -SST 10th

Description : Name any two factors on which resource development depends. -SST 10th

Last Answer : (i) Technology (ii) Quality of human resources.

Economic development of a country depends on which factors and what is the role of democracy in it? -SST 10th

Description : Economic development of a country depends on which factors and what is the role of democracy in it? -SST 10th

Last Answer : In matters of economic development, not all the democracies get developed because of various factors like population, lack of basic infrastructure, etc. If you consider all democracies and all dictatorships ... income is increasing. People at the bottom of society have very little to depend on.

Explain the factors on which the quality of life depends. -SST 10th

Description : Explain the factors on which the quality of life depends. -SST 10th

Last Answer : The quality of life depends upon the following factors: (i) Money and material things. (ii) Presence of family members, friends and relatives. (iii) Good working atmosphere at the office. (iv) An ... learn. (v) A position of self respect in the family. (vi) A safe and secure environment.

State the factors upon which the rate of Soil erosion depends. -SST 10th

Description : State the factors upon which the rate of Soil erosion depends. -SST 10th

Last Answer : The rate of Soil erosion depends upon: (i) Character of the slope of land. (ii) The density of vegetation. (iii) Rainfall—Heavy or Light.

13. A ray of light, incident obliquely on a face of a rectangular glass slab placed in air, emerges from the opposite face parallel to the incident ray. State two factors on which the lateral displacement of the emergent ray depends. [Foreign] -Chemistry-10

Description : 13. A ray of light, incident obliquely on a face of a rectangular glass slab placed in air, emerges from the opposite face parallel to the incident ray. State two factors on which the lateral displacement of the emergent ray depends. [Foreign] -Chemistry-10

Last Answer : Lateral displacement depends on the: angle of incidence, thickness of slab, and refractive index of the material. (any two)

State the factors on which acceleration due to gravity depends. -Science

Description : State the factors on which acceleration due to gravity depends. -Science

Last Answer : The acceleration due to gravity depends upon the radius of the earth,mass of the earth and on a constant having unit Nm^2/kg^2.

Why and when does a current carrying conductor kept in a magnetic field experience force? List the factors on which direction of this force depends? -Science

Description : Why and when does a current carrying conductor kept in a magnetic field experience force? List the factors on which direction of this force depends? -Science

Last Answer : The drifting of free electrons of a conductor in a definite direction causes the current to flow through it. When such conductor is placed in a uniform magnetic field, each drifted electron of a ... depends on (i) direction of current through the conductor, and (ii) direction of magnetic field.

The parabolic potential of a substance depends on what factors ?

Description : The parabolic potential of a substance depends on what factors ?

Last Answer : Answer : ( 1) Thickness of the object ( ii) Volume and shape of the electrode ( iii) Type of electric field ( iv) Frequency of applied voltage ( v) Rate and duration of application of voltage ( ... of voltage ( vi) viii) Potential chemical changes as a result of moisture content and ( ix) pressure.

Measurement accuracy depends on what factors ?

Description : Measurement accuracy depends on what factors ?

Last Answer : The accuracy of the measurement depends on the following factors. 1. The device will not have any kind of mechanical defect , if there is a mechanical defect it will have to be diagnosed and ... the correct position to avoid parallax errors. 3. Avoid random errors and take average of more lessons.

Name two factors on which the coefficient of friction depends.

Description : Name two factors on which the coefficient of friction depends.

Last Answer : Name two factors on which the coefficient of friction depends.

Define ionization enthalpy. Name the factors on which ionisation enthalpy depends? How does it vary down the group and across a period?

Description : Define ionization enthalpy. Name the factors on which ionisation enthalpy depends? How does it vary down the group and across a period?

Last Answer : Define ionization enthalpy. Name the factors on which ionisation enthalpy depends? How does it vary down the group and across a period?

What factors do the gravitational potential energy stored between an object and earth depends on?

Description : What factors do the gravitational potential energy stored between an object and earth depends on?

Last Answer : Feel Free to Answer

Factors on which soil resistance depends: a) depth of the electrode b) moisture c) Nacl d) all the above

Description : Factors on which soil resistance depends: a) depth of the electrode b) moisture c) Nacl d) all the above

Last Answer : Ans: D