1. Examine each one and discuss it's function in a cell membrane. Determine if you think each one is involved in passive or active transport, and if it is active determine the most likely source of energy. Protein Name Active or passive? Energy source? K+ high K+ low Potassium Channel ATP H+ high H+ low Proton Pump K+ Na+ high low Na+ low ATP K+ high Na+ - K+ Pump Proline Low Na+ high Proline high Na+ - Proline Cotransporter Na+ Low H+ high H+ low Sucrose low Sucrose high H+ - Sucrose Cotransporter

Q: Which of the following will likely increase the rate of facilitated diffusion of a glucose mol-…

A: Facilitated diffusion is a type of passive transport in which the movement of particles occurs…

Q: The phosphate transport system in bacteria imports phosphate into the cell even when the…

A: In the small intestine, phosphate is absorbed via at least two separate mechanisms: paracellular…

Q: A membrane simulator is shown below. Watch the video clip in order to answer the question. Diffusion…

A: Osmosis is the movement of water molecules across a semipermeable membrane, driven by the difference…

Q: 9. Water moves across a cell membrane through a channel protein, whereas glucose moves across a cell…

A: Passive transport is a membrane transport system applicable for small molecules or ions that do not…

Q: 6. Sort the following molecules based on their rate of diffusion across the phospholipid bilayer in…

A: The phospholipid bilayer is made up of two phospholipid layers: an internal layer that repels water…

Q: What type of membrane is membrane X? semipermeable Why? Only water crosses What type of membrane is…

A: Permeable, selectively permeable, and semipermeable membranes are all types of membranes that allow…

Q: Which of the following can transport more than one different type of ion or molecule across the cell…

A: Cell membrane  - Cell membrane is defined as the barrier which is used to separate the contents of…

Q: When we discuss the "physiological concentrations of Na* and K+", what actually sets these…

A: Active Transport: Active transport is a type of cellular transport mechanism in which cells move…

Q: Using the figure above, indicate if each statement is true or false. The ions are moving against…

A: Answer: ELECTROCHEMICAL GRADIENT : It is defined as the difference in the chemical ions across the…

Q: What are the 3 types of active transport? Be able to diagram each process. What is required for each…

A: The three types of active transport in biology are: Protein pumps: Protein pumps are transmembrane…

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: 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: Describe the prevailing model of cell membrane structure and how the macromolecules that form them…

A:

Q: Which of the following is not true about Active transport

A: Answer: ACTIVE TRANSPORT = It is the movement of solute particles against the concentration gradient…

Q: Determine the type of transport. Here are your options: Simple diffusion, facilitated diffusion,…

A: In biology, molecules and lipid particles are transported by some particular protein carrier or…

Q: In primary/direct active transport, does ATP always have to be involved? Definitions seem to say the…

A: Chemical processes that liberate energy in the form of heat are known as exergonic reactions. When…

Q: 2. A specialized cell of a multicellular organism   a. performs a particular function b. can grow…

A: Cells in multicellular organisms differentiate and specialise to form tissues that join together to…

Q: shown below, which of the following would likely happen if the glucose facilitated diffusion…

A: Glucose concentration would be higher in the lumen of the organ and lower in the cytosol of the…

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: Diatomic oxygen (O2) exhibits which of the following membrane transport movements

A: Membrane transport refers to the passage of solutes or molecules through the external phospholipid…

Q: Moves high permeability molecules down a gradient without energy Moves low permeability molecules…

A: In biology, a membrane is a thin layer that forms the outer border of a living cell or of the…

Q: A membrane simulator is shown below. Watch the video clip in order to answer the question. Diffusion…

A: Diffusion is very important process of nature where substances present in excess amount will move…

Q: Which of the following statements about ion channels are true? all ion channels are selective for…

A: All ion channels are selective for only one species of ion:  False. While ion channels are…

Q: K+ Select] A Select] Na* ATP mary active transport is being shown by transporter Select] which uses…

A: Molecules are transported across the membrane in two ways passive or active transport. Passive…

Q: Diatomic oxygen (O2) exhibits which of the following membrane transport movements? A. it is not…

A: The cell membrane is a structure which protects the cell and acts as a barrier and transports the…

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.