A young man in his 20s has a heart attack and is rushed to the hospital. Blood is drawn, and his cholesterol level is tested and found to be very high. The doctor tells him that he has a genetic condition in which he is unable to effectively remove LDL particles containing cholesterol from his blood and into his cells. Which cellular process is not functioning normally? a. channel-mediated facilitated diffusion b. receptor-mediated endocytosis c. exocytosis d. simple diffusion?

Q: One is true about smooth endoplasmic reticulum A. It lacks ribosomes B. It is site of Ca2+…

A: All eukaryotic cells have abundant endoplasmic reticulum (ER) cell organelle. ER is a membranous…

Q: Which of the following represent ground substance in extracellular matrix?   a. elastin     b.…

A: Ground substance is a gel like substance which is present in the extracellular matrix. It contains…

Q: Which of the following is not a function of the smooth endoplasmic reticulum? Group of answer…

A: In eukaryotic cells, the endoplasmic reticulum is a type of organelle which forms a network of…

Q: One is NOT TRUE about endocytotic movements including pinocytosis and phagocytosis A. Phagocytosis…

A: The process of bringing substances inside the cell is termed as endocytosis. In this process, the…

Q: Which pathway supplies materials to lysosomes and is used to degrade obsolete parts of the cell

A:

Q: Where are proteins for export produced? A. Golgi apparatus B. Rough endoplasmic reticulum C.…

A: Proteins are the macromolecules ; which are made up of amino acids.These proteins play very…

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: What ion is found in high concentration inside the cell relative to outside of the cell?   A.…

A: A cell can be defined as the smallest unit of the living organisms which formed the groups to…

Q: Explain the process and give an example of each form of cellular transport. a. Passive Diffusion…

A: Cell transport is defined as the movement of a material through a cell membrane. The material has…

Q: Comparison of the ion concentrations of cell cytoplasm with the extracellular fluid would show that'…

A: The differences in the ion concentration inside and outside of the cell give rise to membrane…

Q: What direction is the sugar molecule (the blue hexagon) going to diffuse?   a. Into the cytoplasm…

A: Substances are transported across permeable and semi-permeable membranes via active or passive…

Q: Carrier proteins that bind to substances to move them through the membrane and proteins that form…

A: Proteins are one of the integral groups of biomolecules. They have diverse functions such as…

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: Which macromolecule is NOT digested by the lysosome? A. Proteins B. Nucleic acids C. Polysaccharides…

A: A lysosome is an organelle found in eukaryotic cells. Its function is to the digestion of…

Q: Cells that line the intestines move nutrients from the intestines through the cell and then to the…

A: The human body is very cleverly designed. One such example is the absorptive tissue or the…

Q: As you likely know, the lysosome is filled with hydrolyzing enzymes. As a result, the environment…

A: The lysosome in the cell is a membrane bound organelle, that contains a wide range of hydrolytic…

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: When a human white blood cell “consumes” a red blood cell (erythrocyte), this process is called:…

A: Endocytosis is a process of taking particles or substance into the cell by pinching the membranes of…

Q: Liver cells in culture were kept at 0°C and treated with trypsin to digest the receptors on the cell…

A: The objective of the question is to identify the process by which liver cells in culture take up…

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.