$ Positive diffusion occurs against the concentration gradients. ! Osmosis does not require a semi-permeable membrane.

$ Positive diffusion occurs against the concentration gradients. ! Osmosis does not require a semi-permeable membrane.
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$ Positive diffusion occurs against the concentration gradients. ! Osmosis does not require a semi-permeable ... D. If both As and R are wrong.
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The process of diffusion of one liquid into the other through a semi permeable membrane is called (A) Viscosity (B) Osmosis (C) Surface tension (D) Cohesion

Description : The process of diffusion of one liquid into the other through a semi permeable membrane is called (A) Viscosity (B) Osmosis (C) Surface tension (D) Cohesion

Last Answer : Answer: Option B

In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive (a) K+ into the cell (b) K+ and Na+ out of the cell (c) Na+ into the cell (d) Na+ out of the cell.

Description : In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive (a) K+ into the cell (b) K+ and Na+ out of the cell (c) Na+ into the cell (d) Na+ out of the cell.

Last Answer : c) Na+ into the cell

Substances insoluble in a membrane are carried across the membrane with the concentration gradient by means of a carrier molecule in a process known as: a) osmosis. b) diffusion. c) active transport. d) facilitated diffusion.

Description : Substances insoluble in a membrane are carried across the membrane with the concentration gradient by means of a carrier molecule in a process known as: a) osmosis. b) diffusion. c) active transport. d) facilitated diffusion.

Last Answer : ANSWER: D -- FACILITATED DIFFUSION.

The movement of ions against the concentration gradient will be (a) active transport (b) osmosis (c) diffusion (d) all of the above.

Description : The movement of ions against the concentration gradient will be (a) active transport (b) osmosis (c) diffusion (d) all of the above.

Last Answer : (a) active transport

$ The cell membrane helps in pinocytosis and phagocytosis. ! Cell membrane is permeable.

Description : $ The cell membrane helps in pinocytosis and phagocytosis. ! Cell membrane is permeable.

Last Answer : $ The cell membrane helps in pinocytosis and phagocytosis. ! Cell membrane is permeable. A. If both As and ... wrong D. If both As and R are wrong.

What is a semi-permeable membrane? -Biology

Description : What is a semi-permeable membrane? -Biology

Last Answer : answer:

Why is the cell membrane considered a semi-permeable membrane? -Biology

Description : Why is the cell membrane considered a semi-permeable membrane? -Biology

Last Answer : answer:

A tube of uniform cross sectional sectional area `1 cm^(2)` is closed at one end with semi permeable membrane. A solution having 6g glucose per 100 ml

Description : A tube of uniform cross sectional sectional area `1 cm^(2)` is closed at one end with semi permeable membrane. A solution having 6g glucose per 100 ml

Last Answer : A tube of uniform cross sectional sectional area `1 cm^(2)` is closed at one end with semi permeable membrane. A ... k^(-1)`, density of Hg=13.8 g/cc)

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

In all cells the cytoplasm is externally bounded by a semi - permeable membrane. It is known 4s ..........0+5

Description : In all cells the cytoplasm is externally  bounded by a semi - permeable membrane. It  is known 4s ..........0+5 

Last Answer : Cell membrane/Plasma membrane

A semi permeable membrane is stretched across a chamber filled with water. The membrane is only permeable to water. 60 mg of salt is added to the left side of the chamber. Which of the following will happen? (A) Water will move toward the right side (B) salt will move toward the right side (C) Water will move toward the left side (D) salt will move toward the left side

Description : A semi permeable membrane is stretched across a chamber filled with water. The membrane is only permeable to water. 60 mg of salt is added to the left side of the chamber. Which of the following will ... right side (C) Water will move toward the left side (D) salt will move toward the left side

Last Answer : (C) Water will move toward the left side

$ 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.

Osmosis is the diffusion of what substance through a cell membrane? -Biology

Description : Osmosis is the diffusion of what substance through a cell membrane? -Biology

Last Answer : answer:

How do diffusion and osmosis relate to the cell membrane?

Description : How do diffusion and osmosis relate to the cell membrane?

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Fatty acids can be transported into and out of cell membrane by (A) Active transport (B) Facilitated transport (C) Diffusion (D) Osmosis

Description : Fatty acids can be transported into and out of cell membrane by (A) Active transport (B) Facilitated transport (C) Diffusion (D) Osmosis

Last Answer : B

What is the process in which water moves from an area of high concentration to an area of low concentration across a selectivity permeable membrane?

Description : What is the process in which water moves from an area of high concentration to an area of low concentration across a selectivity permeable membrane?

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Sodium ions are "pumped" from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of (A) Diffusion (B) Passive transport (C) Osmosis (D) Active transport

Description : Sodium ions are "pumped" from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of (A) Diffusion (B) Passive transport (C) Osmosis (D) Active transport

Last Answer : (D) Active transport

Osmosis is the flow of solution from higher concentration to a solution of lower concentration through whw $$Etlcakenancable membrane. What is incorrect in this state-ment?

Description : Osmosis is the flow of solution from higher concentration to a solution of lower concentration through whw $$Etlcakenancable membrane. What is incorrect in this state- ment?

Last Answer : The flow of solution is not possible through semi permeable membrane

In the passive diffusion, solute molecules cross the membrane as a result of A- concentration difference B- pressure difference C- ionic difference D- all of these

Description : In the passive diffusion, solute molecules cross the membrane as a result of A- concentration difference B- pressure difference C- ionic difference D- all of these

Last Answer : concentration difference

Why is fish patka called semi-permeable screen ?

Description : Why is fish patka called semi-permeable screen ?

Last Answer : A screen through which only solvent molecules of a solution can move but solvent molecules cannot move is called semipermeable screen. Since the solvent molecule can move through the fish fillet but the solvent molecule cannot move, the fish fillet is called semipermeable screen.

Which cell acts as a semi-permeable screen in a cell ?

Description : Which cell acts as a semi-permeable screen in a cell ?

Last Answer : Answer : The plasma membrane in a cell acts as a semipermeable membrane.

What is a semi-permeable screen ?

Description : What is a semi-permeable screen ?

Last Answer : The membrane through which only solvent molecules of solution (water in case of plants) can move but solvent molecules cannot move is called semipermeable screen. For example, cell membrane , inner membrane of egg shell , membrane of fish shell etc.

The haemodialyzer has semi-permeable lining of tubes which help to: (a) To maintain osmotic pressure of blood. (b) To filter nitrogenous wastes from the dialyzing solution. (c) In passing the waste product, in the dialyzing solution. (d) To pump purified blood back into the body of the patient.

Description : The haemodialyzer has semi-permeable lining of tubes which help to: (a) To maintain osmotic pressure of blood. (b) To filter nitrogenous wastes from the dialyzing solution. (c) In passing the waste product, in the dialyzing solution. (d) To pump purified blood back into the body of the patient.

Last Answer : (c) In passing the waste product, in the dialyzing solution.

Which cell organelle is semi-permeable?

Description : Which cell organelle is semi-permeable?

Last Answer : Plasma membrane

In a fluidised bed reactor (A) Temperature gradients are very high (B) Temperature is more or less uniform (C) Hot spots are formed (D) Segregation of the solids occurs

Description : In a fluidised bed reactor (A) Temperature gradients are very high (B) Temperature is more or less uniform (C) Hot spots are formed (D) Segregation of the solids occurs

Last Answer : (B) Temperature is more or less uniform

what is a selectively permeable membrane -Biology

Description : what is a selectively permeable membrane -Biology

Last Answer : answer:

what is a selectively permeable membrane -Biology

Description : what is a selectively permeable membrane -Biology

Last Answer : answer:

What is the selectively permeable membrane of the cell? -Do You Know?

Description : What is the selectively permeable membrane of the cell? -Do You Know?

Last Answer : answer:

Mitochondrial membrane is permeable to (A) Short chain fatty acids (B) Medium chain fatty acids (C) Long chain fatty acids (D) All of these

Description : Mitochondrial membrane is permeable to (A) Short chain fatty acids (B) Medium chain fatty acids (C) Long chain fatty acids (D) All of these

Last Answer : Answer : A

What is selectively permeable membrane?

Description : What is selectively permeable membrane? 

Last Answer : A membrane which controls the movement of materials passing through it is called a selectively permeable membrane. It allows some but not all substances to pass through it.  

Plasma membrane in resting condition is very permeable to a. K b. Cl c. Both d. None of them

Description : Plasma membrane in resting condition is very permeable to a. K b. Cl c. Both d. None of them

Last Answer : Cl

When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is (a) comparatively more permeable to Na+ ions and nearly impermeable to K+ ions (b) equally permeable to both Na+ and K+ ions (c) impermeable to both Na+ and K+ ions (d) comparatively more permeable to K+ ions and nearly impermeable to Na+ ions.

Description : When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is (a) comparatively more permeable to Na+ ions and nearly impermeable to K+ ions (b) equally permeable to both ... + and K+ ions (d) comparatively more permeable to K+ ions and nearly impermeable to Na+ ions.

Last Answer : (d) comparatively more permeable to K+ ions and nearly impermeable to Na+ ions.

Which of the following statements regarding mitochondrial membrane is not correct ? (a) The outer membrane resembles a sieve. (b) The outer membrane is permeable to all kinds of molecules. (c) The enzymes of the electron transfer chain are embedded in the outer membrane. (d) The inner membrane is highly convoluted forming a series of infoldings.

Description : Which of the following statements regarding mitochondrial membrane is not correct ? (a) The outer membrane resembles a sieve. (b) The outer membrane is permeable to all kinds of molecules. (c) ... in the outer membrane. (d) The inner membrane is highly convoluted forming a series of infoldings.

Last Answer : (c) The enzymes of the electron transfer chain are embedded in the outer membrane.

Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of carbohydrates, fats and proteins. (c) Enzymes of electron transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.

Description : Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of ... transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.

Last Answer : (c) Enzymes of electron transport are embedded in outer membrane.

This antihelminthic agent makes the membrane permeable to calcium ions. a. Mebendazole b. Pentamidine c. Ivermectin. d. Praziquantel

Description : This antihelminthic agent makes the membrane permeable to calcium ions. a. Mebendazole b. Pentamidine c. Ivermectin. d. Praziquantel

Last Answer : d. Praziquantel

What is the selectively permeable membrane of the cell?

Description : What is the selectively permeable membrane of the cell?

Last Answer : Plasma lemma

Which of the following theories explain that plasma membrane is selectively permeable:

Description : 11. Which of the following theories explain that plasma membrane is selectively permeable: (a) Unit membrane theory (b) Cascade theory © Sandwich theory (d) Fluid Mosaic theory

Last Answer : Answer: d Fluid Mosaic theory

A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by (A) Diffusion within the pellet (B) Reaction (C) External mass transfer (D) None of the above

Description : A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the ... A) Diffusion within the pellet (B) Reaction (C) External mass transfer (D) None of the above

Last Answer : (A) Diffusion within the pellet

What is the difference between osmosis and diffusion?

Description : What is the difference between osmosis and diffusion?

Last Answer : A: Osmosis is the movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration, while diffusion is the movement of particles from an area of high concentration to an area of low concentration.

What is the difference between diffusion and osmosis?

Description : What is the difference between diffusion and osmosis?

Last Answer : A: Diffusion is the movement of particles from an area of high concentration to an area of low concentration, while osmosis is the movement of water molecules from an area of low solute concentration to an area of high solute concentration.

What is the difference between diffusion and osmosis?

Description : What is the difference between diffusion and osmosis?

Last Answer : A: Diffusion is the movement of particles from an area of high concentration to an area of low concentration, while osmosis is the movement of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

What is the difference between osmosis and diffusion?

Description : What is the difference between osmosis and diffusion?

Last Answer : A: Diffusion is the movement of molecules from an area of high concentration to an area of low concentration, while osmosis is the diffusion of water molecules across a selectively permeable membrane.

What is the difference between osmosis and diffusion?

Description : What is the difference between osmosis and diffusion?

Last Answer : A: Osmosis is the movement of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration, while diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

What is the difference between diffusion and osmosis ? -Biology

Description : What is the difference between diffusion and osmosis ? -Biology

Last Answer : The process through which only Liquids move from a Higher concentrated solution towards a Lower concentrated solution through a semi-permeable membrane is called Osmosis whereas The process through which any substance ... :) Stay Safe, Stay Curious, Keep Learning, Keep Growing..... Thankyou!!!

Differentiate between diffusion and osmosis. -Biology 9th

Description : Differentiate between diffusion and osmosis. -Biology 9th

Last Answer : Difference between Osmosis and DiffusionOsmosisDiffusionIt is limited only to the liquid medium.Occurs in liquid, gas and even solids.Requires a semipermeable membrane.Does not require a semipermeable membrane. ... to a glass of water, where eventually, the entire water content becomes coloured.

Differentiate between diffusion and osmosis. -Biology 9th

Description : Differentiate between diffusion and osmosis. -Biology 9th

Last Answer : answer:

Differentiate between Diffusion and Osmosis. -Biology

Description : Differentiate between Diffusion and Osmosis. -Biology

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The phenomenon of osmosis is opposite to that of (A) Diffusion (B) Effusion (C) Affusion (D) Coagulation

Description : The phenomenon of osmosis is opposite to that of (A) Diffusion (B) Effusion (C) Affusion (D) Coagulation

Last Answer : A