Identify and explain two ways in which plasma membranes, composed of plasma molecules such as shown here, can remain fluid when the temperature drops.

Q: List six types of proteins found in the plasma membrane.

A: Proteins are the second major component of plasma membranes.  Some of the most important types of…

Q: Assume that water constitutes 60% of a person’s body weight. What fraction of a person’s body weight…

A: Total body water comprises the water that is present inside the cells i.e. intracellular fluid (ICF)…

Q: When the protein spectrin (in human red blood cells) holds the erythrocyte membrane in place, by…

A: The red blood cell membrane is a lipid bilayer membrane that is bound to spectrin protiens which…

Q: Describe facilitated diffusion.

A: Introduction In this question we will discuss about the facilitated diffusion.

Q: Explain various vesicle-mediated mechanisms.

A: Vesicles in the cytoplasm move macromolecules across the plasma membrane through vesicle transport…

Q: Name the three types of carrier proteins. Which of these can mediate secondary active transport?

A: The plasma membrane is a lipid bilayer composed majorly of phospholipids in which protein molecules…

Q: What relationship exists between the difference in the concentration of water on each side of the…

A: scientists believe that the actual force which drive the osmosis is osmotic pressure.As we know…

Q: Membranes that contain a significant proportion of cis unsaturated fatty acids are more fluid than…

A: Membrane fluidity refers to the viscosity of the lipid bilayer of a cell membrane or a synthetic…

Q: Explain with an example the general principle of physiology that controlledexchange of materials…

A: Principle of Physiology by which exchange of materials occur between compartments -- The mechanism…

Q: Contrast simple diffusion with facilitated diffusion.

A: Simple Diffusion means when molecules move through a cell membrane but they do not use the channels…

Q: Define the definition of carrier mediated transport process in the cells.

A: Carrier-mediated transport is a process where specific molecules (carriers) bind to solutes and then…

Q: Define the term active transport?

A: Active transport is that the energy-requiring method of pumping molecules and ions across membranes…

Q: Explain what types of transporters are present in membranes?

A: Introduction: The cell is separated from the environment outside by the cell membrane. It also forms…

Q: Define CDKs phosphorylate

A: According to the question, we have to provide the definition of CDKs phosphorylate. So, let us have…

Q: Explain how the processes of diffusion, facilitated diffusion, and active transport occur and why…

A: Cells are the basic unit of life, and each cell is surrounded by the cell membrane. The cell…

Q: Blood volume must be restored in a person who has lost large amounts of blood due to serious injury.…

A: Answer- For the blood restoration in an injured person isotonic solution is given only.

Q: Define concentration gradient.

A: The cell is the basic structural and functional unit of our body. It carries out many functions in…

Q: What determine the direction in which net diffusion of a nonpolar molecule will occur?

A: Diffusion is the random movement of molecules and has a net direction towards region of lower…

Q: severe ketosis situations produce acidosis, explain

A: In case of physiologic ketosis, ketones in the blood are higher above baseline levels, however, the…

Q: Describe permeability of a phospholipid bilayer for the following molecules. Use terms:…

A: The plasma membrane of an animal cell is made up of a lipid bilayer with proteins impregnated on…

Q: The osmolarity of plasma is maintained at about 300 mOsM.  What would the osmolarity inside a red…

A: Solute concentration is a solution that makes the solution hypertonic, hypotonic, or isotonic when…

Q: Define the definition of carrier mediated transport process in the cells

A: Cellular life depends on the movement of membrane ions. For cells to continue functioning as they go…

Q: Osmosis Define osmosis and why does blood cell become clear in distilled water?

A: Osmosis: Spontaneous transfer of solvent molecules from a region of low solute concentration into a…

Q: In _______________ membrane-bound vesicles in the cytosol of a cell fuse with the plasma membrane…

A: Our cells take in substances from the external environment by endocytosis and releases molecules…

Q: Explain the properties of membrane fluidity and its dependence upon lipid composition.

A: Introduction: Plasma membrane acts as the selective barrier that allows certain substances to move…

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: Describe the location and components of intracellular and extracellular fluid.

A: The total body fluid consists of specific fuild compartments. these are largely separate from…

Q: Describe the concentration differences for Na+ and K+that exist across the plasma membrane.

A: The plasma membrane is composed of the phospholipid bilayer. The polar heads of the phospholipids…

Q: When a person becomes dehydrated, the amount of water in extracellular fluids such as blood…

A: Dehydration takes place, as the body leaves more liquids and fluids than it enters. Also, low…

Q: Which statement accurately explains the selective permeability of the plasma membrane?

A: The selective permeability of plasma membrane is accurately explained by the statement it provides a…

Q: Does active transport move order to disorde

A: There are two major types of cell transport: passive transport and active transport.Passive…

Q: Plasma cells are key to the immune response because they secrete antibodies. Given that antibodies…

A: Plasma cells are white blood cells which are part of immune system.  The B lymphocytes differentiate…

Q: Give two examples of extra-cellular fluids.

A: Body fluids in the human body are distinguished into two major types as extracellular fluids and…

Q: the correct statements regarding the transport of proteins to the ER shown in the diagram below.

A: The signal recognition particle dependent targeting pathway helps in the rapid and efficient…

Q: The normal osmolarity and glucose level of plasma are 300mmol/L and 1g/L, respectively. Estimate the…

A: Mw of glucose= 180 Molar concentration (C) = Mass conc. (g/l) / Mw = 1/ 180 = 0.005 mol/l (Normal…

Q: Explain how cholesterol helps maintain the plasma membrane's fluid nature

A: Introduction  Cell is the basic unit of life. All organisms be it single cellular or multicellular,…

Q: Illustrate the diffusion of glucose between two compartments of equal volume separated by a…

A: The spontaneous movement of molecules from the area of its high concentration to the area of its low…

Q: Why is ketosis frequently accompanied by acidosis?

A: Ketosis has adverse effects on an individual such as, weaknesses and exhaustion and acidosis can…

Q: Define diffusion. How does this differ from osmosis?

A: Students are typically asked to compare and contrast osmosis and diffusion. The answer to the…

Q: Describe the reason why the red blood cells placed in one solution swell and burst and also why the…

A: Red blood cells  The cells which are red in colour and carry oxygen gas to the every cell of our…

Q: Explain the major difference between the cytosol and the extracellular fluid.

A: The fluid that makes up a cell is referred to as "cytosol." Another name for it is "intracellular…

Q: describe the various mechanisms for transportingmaterial through cellular membranes

A: The cytoplasmic membrane is a good permeability barrier because it is semi-permeable and envelops…

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.