Which of the following describes integral membraneproteins?a. They permit water movement only into or out of thecell.b. They transport only large proteins into the cell.c. They extend across the phospholipid bilayer.d. They are attached to the external plasma membranesurface

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 of the following best describes an integral membrane protein? A.A protein that has an…

A:

Q: In the image, the tight junction proteins link cells together creating a barrier. These barrier…

A: Introduction: Four kinds of junctions are present in vertebrates which are; • Tight junctions •…

Q: Osmosis is water movement across a semipermeable membrane. Which of the following is true about…

A: Osmosis is the type of diffusion that involves the passive movement of water through the…

Q: Based on the knowledge of molecular biology, the reason so many organelles, such as endoplasmic…

A: Vesicle transport is a crucial cellular process that enables communication and exchange of material…

Q: A transmembrane protein in the plasma membrane is glycosylated attwo sites in the polypeptide…

A: The correct option is (b).

Q: In the image, the tight junction proteins link cells together creating a barrier. These barrier…

A: Cell junctions: these junctions are responsible for adhesion between cells as well as restrictive…

Q: What features of a membrane are major contributors to its selectivepermeability?a. phospholipid…

A: The plasma membrane is the outer covering in the cells with no cell wall or any other outer covering…

Q: Which of the following statements related to intercellular junctions is false? Cadherins are…

A: The extracellular matrix facilitates cellular communication within tissues by inducing chemical…

Q: Choose all that aplly that are TRUE for the lipid bilayer: Negative mark is given to incorrect…

A: A lipid bilayer is described as a very thin layer that is made up of two different layers of…

Q: he difference between a gap junction and plasmodesmata is… Select one: a. Gap junctions are formed…

A: Animal cells communicate by using thier extracellular space which is connected other cell through…

Q: Facilitated diffusion differs from active transport in thatfacilitated diffusiona. expends no ATP.b.…

A: The cell membrane is semipermeable and allows only certain molecules transportation from in and out…

Q: Which of the following statements regarding the selective permeability of the lipid bilayer is…

A: The plasma or cell membrane contains a bimolecular phospholipid layer with polar heads and non polar…

Q: Which of the following can enter the cell by diffusion through the plasma membrane?   A. salts…

A: The only molecules that can freely diffuse across cell membranes are the smallest ones, including…

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: Calcium ions (Ca?+) are a typical cell at rest. a. more concentrated in the cytosol of b. equally…

A: In a resting state the concentration of calcium ions (Ca2+) is higher in the extracellular fluid…

Q: The cytoplasm of a certain cell is composed of a solution that is 98% water, 2% solutes. Consider…

A: Introduction  Tonicity is a measure of the relative concentration of solutes dissolved in two…

Q: What is the best description of the role of NADH in a cell? Select one: a. A waste product b. A…

A: * NADH helps to oxidation metabolic pathways like glycolysis to help with the oxidation of glucose…

Q: Explain how the chemical composition/structure of the plasma membrane allows for it to be…

A: Plasma membrane protect the cell from surrounding and it is it's basic function and it is made up of…

Q: What is assumed as the cell membrane function in connection with it as a mechanical structure Select…

A: The cell membrane, also known as the plasma membrane, is a double layer of lipids and proteins that…

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…