What is diffusion through a cell membrane? -Biology

What is diffusion through a cell membrane? -Biology
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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:

Can small lipids diffuse into cell membrane through diffusion?

Description : Can small lipids diffuse into cell membrane through diffusion?

Last Answer : Feel Free to Answer

How do diffusion and osmosis relate to the cell membrane?

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

Last Answer : Need answer

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

The process by which cell can take in fluid and molecules too large to be carried across the plasma membrane by active transport is called a. phagocytosis b. Pinocytosis c. absorption d. diffusion

Description : The process by which cell can take in fluid and molecules too large to be carried across the plasma membrane by active transport is called a. phagocytosis b. Pinocytosis c. absorption d. diffusion

Last Answer : Pinocytosis

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

07. What is implied by «active transport»? a) Transport of drugs trough a membrane by means of diffusion b) Transport without energy consumption c) Engulf of drug by a cell membrane with a new vesicle formation

Description : 07. What is implied by «active transport»? a) Transport of drugs trough a membrane by means of diffusion b) Transport without energy consumption c) Engulf of drug by a cell membrane with a new vesicle formation

Last Answer : d) Transport against concentration gradient

3 Diffusion of drugs across cell membrane: A. Is dependent upon metabolic activity of the cell B. Is competitively inhibited by chemically related drugs C. Is affected by extent of ionization of drug molecules D. Exhibits saturation kinetics

Description : 3 Diffusion of drugs across cell membrane: A. Is dependent upon metabolic activity of the cell B. Is competitively inhibited by chemically related drugs C. Is affected by extent of ionization of drug molecules D. Exhibits saturation kinetics

Last Answer : C. Is affected by extent of ionization of drug molecules

Assertion `:-` The amount of `CO_(20` that can diffuse through the diffusion membrane per unit differnece in partial pressure is much higher compared

Description : Assertion `:-` The amount of `CO_(20` that can diffuse through the diffusion membrane per unit differnece in partial pressure is much higher compared

Last Answer : Assertion `:-` The amount of `CO_(20` that can diffuse through the diffusion membrane per unit ... . D. If both Assertion & Reason are false.

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

What is diffusion across a biological membrane? -Biology

Description : What is diffusion across a biological membrane? -Biology

Last Answer : answer:

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

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

Last Answer : $ Positive diffusion occurs against the concentration gradients. ! Osmosis does not require a semi-permeable ... D. If both As and R are wrong.

The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) Endothelium of alveolar capillaries (C) Basement substances in betw

Description : The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) Endothelium of alveolar capillaries (C) Basement substances in betw

Last Answer : The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) ... (C) Basement substances in between capillaries and alveoli

The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) Endothelium of alveolar capillaries (C) Basement substances in betw

Description : The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) Endothelium of alveolar capillaries (C) Basement substances in betw

Last Answer : The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) ... (C) Basement substances in between capillaries and alveoli

When do the particles stop moving across the membrane in diffusion?

Description : When do the particles stop moving across the membrane in diffusion?

Last Answer : Particles in a given medium stop moving across the membraneduring diffusion when a state of equilibrium is reached, that iswhen the number of particles on either side of the membraneequalizes.

All the following processes occur rapidly in the membrane lipid bilayer except (A) Flexing of fatty acyl chains (B) Lateral diffusion of phospholipids (C) Transbilayer diffusion of phopholipids (D) Rotation of phospholipids around their long axes

Description : All the following processes occur rapidly in the membrane lipid bilayer except (A) Flexing of fatty acyl chains (B) Lateral diffusion of phospholipids (C) Transbilayer diffusion of phopholipids (D) Rotation of phospholipids around their long axes

Last Answer : C

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

All the following processes occur rapidly in the membrane lipid bilayer except (A) Flexing of fatty acyl chains (B) Lateral diffusion of phospholipids (C) Transbilayer diffusion of phospholipids (D) Rotation of phospholipids around their long axes

Description : All the following processes occur rapidly in the membrane lipid bilayer except (A) Flexing of fatty acyl chains (B) Lateral diffusion of phospholipids (C) Transbilayer diffusion of phospholipids (D) Rotation of phospholipids around their long axes

Last Answer : (C) Transbilayer diffusion of phospholipids

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.

What conditions will a substance be likely to enter a cell through diffusion?

Description : What conditions will a substance be likely to enter a cell through diffusion?

Last Answer : If there is the concentration of substance inside the cell islesser than outside and cell membrane is permeable to thesubstance.

Why the process of diffusion is important in exchange of gases and water in the animal and plant cell ? -Biology

Description : Why the process of diffusion is important in exchange of gases and water in the animal and plant cell ? -Biology

Last Answer : Diffusion is an important in exchange of gases and water in the life of a cell, in addition to this the cell also obtain nutrition from its environment.

Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a

Description : Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a

Last Answer : Which one of the following pairs of hormones are the examples of those that can easily pass ... C. Cortisol, testosterone D. Insulin, glucagon

What is is the ability of a cell membrane to allow materials to pass through it called?

Description : What is is the ability of a cell membrane to allow materials to pass through it called?

Last Answer : permeability

What is the ability of the cell membrane to allow materials to pass through it called?

Description : What is the ability of the cell membrane to allow materials to pass through it called?

Last Answer : permeability

In passive transport materials move from an area of higher concentration to an area of lower concentration through a cell membrane.?

Description : In passive transport materials move from an area of higher concentration to an area of lower concentration through a cell membrane.?

Last Answer : yes

What are the special in cell membrane that allow materials such as water and sugar to pass through made of?

Description : What are the special in cell membrane that allow materials such as water and sugar to pass through made of?

Last Answer : proteins

The signal sequence of proteins is cleaved off (A) On the ribosomes immediately after synthesis (B) In the endoplasmic reticulum (C) During processing in Golgi apparatus (D) During passage through the cell membrane

Description : The signal sequence of proteins is cleaved off (A) On the ribosomes immediately after synthesis (B) In the endoplasmic reticulum (C) During processing in Golgi apparatus (D) During passage through the cell membrane

Last Answer : Answer : B

Which of the following statement(s) is/are true concerning cell membrane receptors? a. The largest family of cell surface receptors are the G-protein-linked receptors b. Activities of the G-protein involve binding and hydrolysis of ATP c. The G protein receptor generates an intracellular messenger commonly through the use adenylate cyclase d. Tyrosine kinase receptors are considered G-protein-linked receptors

Description : Which of the following statement(s) is/are true concerning cell membrane receptors? a. The largest family of cell surface receptors are the G-protein-linked receptors b. Activities of the ... through the use adenylate cyclase d. Tyrosine kinase receptors are considered G-protein-linked receptors

Last Answer : Answer: a, c All water-soluble regulatory molecules bind to the cell surface receptor proteins. Binding of the appropriate ligand evokes an intracellular signal which usually regulates ... are adenylate cyclase, which converts ATP to cAMP, and the polyphosphoinositide-specific phospholipase C

Which of the following statement(s) is/are true concerning water movement across cell membranes? a. Water moves only actively through cell membrane transport proteins b. For most cells of the body, the transmembrane hydrostatic pressure is 0 c. Water distribution is determined entirely by solute distribution d. Specialized cells such as the glomerulus of the kidney actively transport water to maintain hydrostatic pressure

Description : Which of the following statement(s) is/are true concerning water movement across cell membranes? a. Water moves only actively through cell membrane transport proteins b. For most cells of ... cells such as the glomerulus of the kidney actively transport water to maintain hydrostatic pressure

Last Answer : Answer: b, c The energetics of water transport across cell membranes is simplified by the fact that water moves only passively due to gradients of hydrostatic pressure or water ... water is distributed at equilibrium. Water distribution is determined entirely by solute to solute distribution

Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)?(a) Insulin, glucagon (b) Thyroxine, insulin (c) Somatostatin, oxytocin (d) Cortisol, testosterone

Description : Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)? (a) Insulin, glucagon (b) Thyroxine, insulin (c) Somatostatin, oxytocin (d) Cortisol, testosterone

Last Answer : (d) Cortisol, testosterone

06. A hydrophilic medicinal agent has the following property: a) Low ability to penetrate through the cell membrane lipids b) Penetrate through membranes by means of endocytosis c) Easy permeation through the blood-brain barrier d) High reabsorption in renal tubules

Description : 06. A hydrophilic medicinal agent has the following property: a) Low ability to penetrate through the cell membrane lipids b) Penetrate through membranes by means of endocytosis c) Easy permeation through the blood-brain barrier d) High reabsorption in renal tubules

Last Answer : a) Low ability to penetrate through the cell membrane lipids

81. Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus) (1) Cortisol, testosterone (2) Insulin, glucagon (3) Thyroxin, Insulin (4) Somatostatin, oxytocin

Description : 81. Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus) (1) Cortisol, testosterone (2) Insulin, glucagon (3) Thyroxin, Insulin (4) Somatostatin, oxytocin

Last Answer : Cortisol, testosterone

How much water is in a cell after diffusion?

Description : How much water is in a cell after diffusion?

Last Answer : Need answer

The diffusion of solvent particles into a living cell

Description : The diffusion of solvent particles into a living cell

Last Answer : Ans. Endosmosis

In animals that do not present the circulatory system the transport of substances occurs by cell to cell diffusion. The blood is a fundamental means of substance transport for larger animals since in these animals there are tissues distant from each other and from the environment thus making diffusion impossible.

Description : In animals that do not present the circulatory system the transport of substances occurs by cell to cell diffusion. The blood is a fundamental means of substance transport for larger animals ... there are tissues distant from each other and from the environment thus making diffusion impossible.

Last Answer : What are the two types of circulatory systems?

Cell becomes turgid because of - (1) Plasmolysis (2) Exosmosis (3) Endosmosis (4) Diffusion

Description : Cell becomes turgid because of - (1) Plasmolysis (2) Exosmosis (3) Endosmosis (4) Diffusion

Last Answer : (3) Endosmosis Explanation: When the plant cell is placed in a hypotonic solution, it takes up water by osmosis and starts to swell, but the cell wall prevents it from bursting. The plant cell is ... become "turgid" i.e. swollen and hard. So it is because of endosmosis that cell becomes turgid.

Sugars depend on which mechanism to enter the cell a. facilitated diffusion b. active transport c. both d. none of them

Description : Sugars depend on which mechanism to enter the cell a. facilitated diffusion b. active transport c. both d. none of them

Last Answer : facilitated diffusion

The process of taking dissolved material into the substance of the cell is called. a. Phagocytosis b. Pinocytosis c. absorption d. diffusion

Description : The process of taking dissolved material into the substance of the cell is called. a. Phagocytosis b. Pinocytosis c. absorption d. diffusion

Last Answer : absorption

Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be (a) no movement of water(b) equilibrium between the two (c) movement of water from cell A to B (d) movement of water from cell B to A.

Description : Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure ... two (c) movement of water from cell A to B (d) movement of water from cell B to A.

Last Answer : (c) movement of water from cell A to B

The movement of glucose into a cell occurs by a. Facilitated diffusion. b. Active transport. c. Simple diffusion. d. Phospholipid exchange.

Description : The movement of glucose into a cell occurs by a. Facilitated diffusion. b. Active transport. c. Simple diffusion. d. Phospholipid exchange.

Last Answer : b. Active transport.

By which of the following can movement of materials across animal cell membranes be accomplished? I Active transport, II Diffusion, III Pinocytosis (A) I only (B) II only (C) I and II only (D) All I, II, and III

Description : By which of the following can movement of materials across animal cell membranes be accomplished? I Active transport, II Diffusion, III Pinocytosis (A) I only (B) II only (C) I and II only (D) All I, II, and III

Last Answer : Will be only two.

Cell becomes turgid because of (1) Plasmolysis (2) Exosmosis (3) Endosmosis (4) Diffusion

Description : Cell becomes turgid because of (1) Plasmolysis (2) Exosmosis (3) Endosmosis (4) Diffusion

Last Answer : Endosmosis

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:

What is the location of intrinsic proteins in the cell membrane? -Biology

Description : What is the location of intrinsic proteins in the cell membrane? -Biology

Last Answer : answer:

What is the function of the fluid mosaic model of a cell membrane? -Biology

Description : What is the function of the fluid mosaic model of a cell membrane? -Biology

Last Answer : answer:

Where are proteins found in the cell membrane? -Biology

Description : Where are proteins found in the cell membrane? -Biology

Last Answer : answer:

What are the three types of proteins found in the cell membrane? -Biology

Description : What are the three types of proteins found in the cell membrane? -Biology

Last Answer : answer:

Functions of plasma membrane in a cell. -Biology

Description : Functions of plasma membrane in a cell. -Biology

Last Answer : answer:

Assertion `:-` In fish ammonia is excreted by diffusion through gill surface as ammonium ions. Reason `:-` Some amount of urea may be retained in the

Description : Assertion `:-` In fish ammonia is excreted by diffusion through gill surface as ammonium ions. Reason `:-` Some amount of urea may be retained in the

Last Answer : Assertion `:-` In fish ammonia is excreted by diffusion through gill surface as ammonium ions. Reason ` ... . D. If both Assertion & Reason are false.

The respiratory membranes facilitates the exchange of respiratory gases through diffusion . Oxygen enters the deoxygenated blood through diffusion bec

Description : The respiratory membranes facilitates the exchange of respiratory gases through diffusion . Oxygen enters the deoxygenated blood through diffusion bec

Last Answer : The respiratory membranes facilitates the exchange of respiratory gases through diffusion . Oxygen enters the ... it 40mm Hg and 46 mm Hg respectively