Active transport must function continuously because a.facilitated transport opposes active transport b.not all membranes are amphiphilic c.diffusion is constantly moving solutes in opposite directions d.the cell needs ions outside the cell e.plasma membrane wear out

Q: Many molecules move across membranes by diffusion.     Which of the following statements related…

A: Membrane transport is a mechanism which involves transport of molecules or substances. There are two…

Q: Describe the effect of a blocker of cellular ATP production (e.g. anoxia plus sodium fluoride) on…

A: Considering the case as mentioned i.e. anoxia which refers to the oxygen Deficiency in cell. Here…

Q: Which of the statements about diffusion are true? Select all that apply.     A. Solutes diffuse from…

A: The movement of particles is dependent on multiple factors including the charge on particle,…

Q: Which term best describes the following scenario: Calcium ions travel through the cell membrane into…

A: Only some substances move through the cell membrane because cell membrane is selectively permeable…

Q: This graph represents two different modes of transport across a biological membrane. One shows a…

A: Facilitated diffusion is a kind of passive transport. It involves solute diffusion in the plasma…

Q: The cells lining the small intestine rapidly move large quantities of glucose from the glucose-rich…

A: The energy of the cell, usually in the form of adenosine triphosphate, is required for active…

Q: Diffusion_. is important for moving molecules over large distances in the body is a type of active…

A: The cellular process by which solutes, including ions and small molecules, move across the…

Q: Saccharides are individually moved from the epithelial cells into the bloodstream Sodium ions are…

A: Cell transport is the movement of substances through the cell membranes and it can be categorized…

Q: Sketch out a cross section of a cell membrane showing proposed transporter involved in either…

A: cell membrane is the outer couvering of a cell and is made up of mostly of lipid bilayer and the…

Q: solute passively diffuses through a transport protein out of the cell, therefore, ____. a. the…

A: Diffusion is a passive process in which transport of molecules takes place across the plasma…

Q: 1. Substances move through biological membranes against concentration gradients via: a. Simple…

A: In active transport, the cell need to use energy in the form of ATP to transfer molecules across a…

Q: Glucose transport across cell membranes varies depending upon blood glucose levels.  When glucose…

A: Facilitated diffusion In this diffusion the passive transport of substances across the membrane…

Q: Which of the following is FALSE regarding membrane transport? O A cell can add proteins into its…

A: In cell biology, membrane transport refers to the accumulation of processes that control the passage…

Q: Which of the following is true about motion of membrane lipids? A. They can move most rapidly when…

A: Biological membranes are made up of a continuous double layer of lipid molecules that contain…

Q: Diffusion means that a)  smaller particles move across the membrane faster. b)  all particles…

A: The movement of particles from an area of higher concentration to an area of lower concentration…

Q: Match the definition on the left with the term on the right. a. Passive transport 1. Large wastes or…

A: Diffusion is the process of movement of material across the plasma membrane where the molecules will…

Q: The diffusion stops when a substance concentration is high inside a ell: a- This can be found in…

A: Diffusion is the process that results in the net motion of particles from a region of higher…

Q: When a Prokaryote or Eukaryotic cell is placed in an aqueous (water) solution containing K+ and Na+…

A: A cell membrane separates all cells from their surroundings. The cell membrane controls what enters…

Q: What is the second type of lipid that plays a major role in the plasma membrane? This lipid does not…

A: There are three major classes of membrane lipid present -  Phospholipid  Cholesterol…

Q: When you jump in the bath, water does not run around all your cells and directly into your body.…

A: These are water channels,  are channel proteins from a larger family of major intrinsic proteins…

Q: The force driving simple diffusion is _____, while the energy source for active transport is _____.…

A: Simple diffusion is the process in which movement of particles takes place through the membrane…

Q: During passive transport, substances will move across a selectively permeable membrane until……

A: Passive transport is a type of transport of molecules in which there is no use of energy molecules.…

Q: Glucose is often present in very low concentrations in environments populated by microorganisms. To…

A: Glucose is a six-carbon sugar that provides the energy needed by cells. Since glucose is a large…

Q: How do small fat-soluble molecules normally get into a cell?   a. they never get in   b. the…

A: cell are the basic membrane bound unit which is the fundamental unit of life. cell is composed of…

Q: Cholesterol can be packaged into droplets using LDL (low density lipoprotein). Cells that need to…

A: Lipids, are organic compounds which are insoluble or poorly soluble in water. They are readily…

Q: During an investigation on membrane transport, a researcher exposed bacterial cells to different…

A: The cell membrane is a phospholipid bilayer molecule that surrounds the cell and is essential for…

Q: What is osmosis?     a. the process where water diffuses across the cells' membrane from an area…

A: In osmosis the water (solvent) only moves across the semipermeable membrane. The solvent can't cross…

Q: Glucose is a large molecule that cannot penetrate the phospholipid bilayer of cells. Instead,…

A: Red Blood Cells are devoid of mitochondria and derive their energy from Glycolysis and hence,…

Q: Read the statements below about membrane transport. Identify the statement that is true. The…

A: Thier are different mechanism of transport of molecule in the cell . Some use energy whike other…

Q: 1. The specific molecule that pass through the cell membrane by osmosis . * 2. What is one…

A: Transport across the plasma membrane can be of two types. Passive transport: In this transport,…

Q: Potassium cyanide is known to interfere with the formation and use of ATP in cell metabolism. If the…

A: (Note: According to guidelines, we are supposed to answer only 1 question. Please submit other…

Q: Why can't ions like sodium (Na+) or potassium (K+) diffuse directly through the phospholipid…

A: The cell membrane is a quasi-fluid structure, meaning it provides stability to the cell and holds…

Q: a) Which of the two molecules that are the same size will passively diffuse across a cell membrane…

A: A) water and carbon dioxide can passively move across membrane because of its small size and water…

Q: Which of the following is not true regarding facilitated transport across a membrane? Select one: a.…

A: Facilitated diffusion is transfer of substances from higher concentration to lower concentration…

Q: Which of the following is true of exocytosis, but not true of facilitated diffusion? Select all that…

A: The use of secretory vesicles to transport molecules out of the cell by fusing the vesicles with the…

Q: Which energy is needed to drive the transport of molecules via active transport? A Kinetic energy of…

A: Introduction: Active transport: Active transport involves the movement of molecules from the…

Q: Typically, our cells have a high concentration of sodium ions outside and a low concentration of…

A: Because the concentration of sodium ions  is more outside the cells. This means sodium ions…

Q: Pertains to membrane transport and signaling

A: Any biological membrane delimiting the cell is composed of a lipid bilayer with hydrophillic (water…

Q: What do active transport and facilitated diffusion have in common? a. They both create membrane…

A: Active transport is the transportation of solutes from lower concentrations to higher…

Q: Which of the following is an example of a primary active transport? a.CPT-I b.Na+/K+ pump…

A: Animal cells are usually surrounded by a cell membrane which acts as a structure that regulates the…

Q: How is active transport different from simple diffusion? Both active transport and simple diffusion…

A: Often molecules are transported between cells via different means. This transportation is essential…

Q: Which observation would suggest that active transport, rather than passive diffusion, is responsible…

A: Passive Diffusion is a downhill process, ATP independent.  During this process substances moves…

Q: The transport of a certain molecule exhibits the following characteristics: (1) The molecule moves…

A: All living organisms are made up of cells. The cells are the basic structural and functional unit of…

Q: el 1 and Model two are diagrams showing the process of two types of bulk transport which require…

A: The movement of macromolecules such as proteins or polysaccharides into or out of the cell is called…

Q: Secondary active transport …   A. Moves a molecule against its chemical gradient but with its…

A: All living cells, must get a supply of essential substances like nutrients electrolytes, water, etc.…

Q: Draw a protein that is embedded in a membrane (transmembrane protein). Draw a membrane with two…

A:

Q: 1. Substances move through biological membranes against concentration gradients via: a. Simple…

A: *simple osmosis is spontaneous passage  of water through a semipermeable membrane  * Active…

Q: You are studying a transport protein. It appears to bind temporarily to the molecule to be…

A: 1. ANSWER;- This is an example of facilitated diffusion. The molecule is a competitive inhibitor.…

Q: In the figure to the left, what type of transport is being used to move sodium out of the cell? a.…

A: Please follow step 2 for detailed explanation.

Q: Molecules that are too large to be moved across a cell membrane can enter the cell by? A. Diffusion…

A: The movement of particles (solute) across or through a membranous barrier is referred to as membrane…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.