86. transport of molecules across a selectively permeable membrane requires the input of energy from the cell, whereas transport of molecules across a selectively permeable membrane does not require the use of cellular energy.

Q: The mechanism of membrane transport may involve the following: 1) ATP hydrolysis. O2) Conformation…

A: The transmembrane concentration of solute, dimensions, and charges of the solute, as well as…

Q: 1. Explain how diffusion occurs across a cell membrane. What is required for diffusion to occur?…

A: Diffusion occurs across a cell... Ans 1.Diffusion occurs when particles disperse.  They move from an…

Q: Distinguish between simple diffusion (SD), facilitated di

A: Passive transport occurs along the concentration gradient and without the use of metabolic energy.…

Q: Provide 2 examples of Diffusion, Osmosis, and Semi-Permeable Membrane (1 from the "Diffusion Through…

A: Diffusion and osmosis are quite similar which describes movement of substance from its a region of…

Q: All of the following are passive membrane transport processes except: (a) diffusion. (b) facilitated…

A: The membrane transport process, by which substances move in the direction of the concentration…

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

A: Introduction: Transportation of substances across the cell membrane occurs via various methods.…

Q: 5. A particular amino acid is transported from the extracellular medium against its concentration…

A: The plasma membrane of the cell is the selective barrier that regulates transportation of different…

Q: 8. The existence of a concentration gradient of glucose across a membrane means that there is a high…

A: Given: The existence of a concentration gradient of glucose across a membrane. Plasma membrane is…

Q: Describe the fluid properties of the cell membrane and explain how membrane fluidity is influenced…

A: Introduction: The cell membrane performs a variety of tasks, including ion conductivity, cell…

Q: Describe ONE modification that could happen to the phospholipids in a membrane that would increase…

A: The membrane of cell organelles is composed of a phospholipid bilayer which contains two layers of…

Q: 47.  When a scientist perceives substance moving from an area of high to low concentration, which…

A: Transport of substances in and out of the cell is important. It is a highly selective process and…

Q: Match the transport mechanisms with their descriptions.  (1) diffusion (2) facilitated diffusion (3)…

A: Diffusion: movement down the concentration gradient without a carrier protein or energy input…

Q: Eukaryotic membrane fluidity can be decreased by which of the following mechanisms? increasing the…

A: The cell membrane is the barrier between the cell and its surroundings. This membrane is referred to…

Q: 16. According to the fluid mosaic model of cell membranes, which of the following is a true…

A: The fluid mosaic model describes the plasma membrane's structure as a mosaic of components,…

Q: Which of the following statements is/are true about transport proteins? I. They carry out…

A: Answer :- III)They function to accumulate solutes against the concentration gradient is the correct…

Q: 4. A researcher is interested in the mode of transport of three different substances (A, B, & C)…

A: The plasma membrane is a protein-lipid bilayer that is hydrophobic at the core and both sides are…

Q: The following table depicts the rate of transport of a molecule into a cell as the external…

A: In cell science, membrane transport alludes to the assortment of mechanisms that manage the passage…

Q: Endocytosis and exocytosis are both forms of [ ACTIVE / PASSIVE ] transport that [ DO / DO NOT ]…

A: A subfield of biology called cell biology examines the composition, operation, and behavior of…

Q: Statement 1: The direction of diffusion of a solute across a membrane is determined by its…

A: Diffusion - It is the passive movement of solutes from a region of high concentration to a region of…

Q: 20) Cells shrink when you place them in a solution with a high concentration of niacin (Vitamin B3),…

A: Osmosis is the process by which molecules of a solvent tend to pass through a semi permeable…

Q: Describe the different types of membrane transport. Which require energy, and which are passive

A: Introduction  Cells can move things into or out of the cell via a variety of cellular transport…

Q: Explain the difference between active transport across the cell membrane and passive transport

A: Moving molecules through the cell membrane involves two different sorts of mechanisms: active…

Q: Explain how the following cell transport systems work moving materials around inside the cell and…

A: Transport of materials across the cell membrane within cells depends on the nature of the material…

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.…

Immunology

Immunology is the division of science involved with the immune reactions occurring in living organisms. The organisms are accustomed to evolving internal defense mechanisms to evade the invasion of microbial pathogens. Diverse cells are connected with stimulating the immune responses, which produce inhospitable conditions to the microbes prompting their lysis and thus inhibits the multiplication of the pathogens. The immune system can distinguish the pathogens through the aid of cellular intercommunication and launch responses to destroy them.