Answer:
3. Integral membrane proteins
Transmembrane proteins, many proteins held in the bilayer by lipid groups, and some proteins held on the membrane by unusually tight binding to other proteins cannot be released easily. These proteins are called integral membrane proteins.
Some membrane proteins do not extend into the hydrophobic interior of the lipid bilayer at all; they are instead bound to either face of the membrane by noncovalent interactions with other membrane proteins. These are called peripheral membrane proteins.
4. Diffusion.
Net movement of a substance from a region where it has a higher concentration to a region where it has a lower concentration, due to random molecular motion, is called diffusion.
5. Osmosis
6. Isosmotic
If two solutions have same osmotic pressure, they are termed isosmotic.
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface...
Match each of the following types of membrane transport with the correct example (some answers may be used more than once): Calcium is moved out of a cell to the extracellular fluid where the solution of calcium is hypertonic Glucose moves from high concentration in the extracellular fluid around a capillary to an area of lower concentration near a cell A cell with 18 sodium molecules outside and 3 inside moves three of the sodium molecules out while using ATP...
Part of the vulture's protection is a stomach that is >10x more acidic than most other animals. The parietal cells of the stomach contain membrane "pumps" that transport hydrogen ions from the interior of the cell (pH=7.4) to the surrounding medium to make gastric juice (pH=0.9). The transmembrane potential between the interior of the cells and the lumen of the stomach is -75mV (inside of the cells is -75mV relative to the outside of the cells). Calculate the free energy...
. For each of the 3 situations below, use an arrow to indicate the net movement of water into or out of the cell through the semipermeable plasma membrane (i.e. osmosis). (Assume that the sugar molecules cannot pass through the plasma membrane in each case.) 1% sugar (inside a circule) 3% sugar (inside a circule) 1% sugar (inside a circule) 5% sugar 1% sugar 1% sugar 3. In each of the drawings above, indicate if the inside of the cell...
Question 44 1 pts Which of the following statements is true about the resting membrane potential of a mammalian neuron? The concentration of K is greater outside the cell than inside the cell The sodium potassium pump maintain the Na' and K gradient in the resting membrane potential by moving those ions across the plasma membrane with the energy provided by ATP. The inside of the cell is positively charged. The concentration of Nat is greater inside the cell than...
41. Phospholipids are amphipathic molecules a. True 42. Which of the following structure's protect a plant cell from bursting due to the uptake of excess water? b. False a. Mitochondria b. Plasma membrane c. Chloroplast 43. The opening of d. Cell wall channels is controlled by the binding of a substance to the channel. a. Mechanically-gated c. Voltage-gated b. Ligand-gated d. DNA 44. The concentration of Ca' is in the cell, but outside of the cell. c. Higher .... Lower...
Chapter 3 Cells and Their Functions ESCRIBE METHODS BY WHICH SUBSTANCES ENTER AND LEAVE CELLS THAT REQUIRE CELLULAR ENERGY。 EXERCISE 3-7 Write the appropriate term in each blank from the list below exocytosis endocytosis active transport diffusion osmosis filtration pinocytosis 1. The process that utilizes a carrier to move materials across the plasma membrane against the concentration gradient using ATP 2. The movement of fluids through a membrane using a pressure gradient 3. The movement of water down its concentration...
How does facilitated diffusion differ from simple diffusion? Facilitated diffusion requires ATP Facilitated diffusion requires a solute-specific protein carrier Facilitated diffusion transports solute against its’ concentration gradient Which of the following is TRUE about primary active cell membrane transport? It is a form of transport that requires a protein “pump” It is a form of transport that transports ions and/or solute against their concentration gradient It is a transport mechanism that requires energy released from the splitting of ATP by...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
CELL MEMBRANE Protected View Saved to this PC References Mailings Review View Help Tell me what you want to do et can contain viruses. Unless you need to edit, it's safer to stay in Protected View Enable Editing 1. What are the TWO MAIN COMPONENTS that make up the CELL MEMBRANE? 2. What types of molecules can EASILY go through your cell membrane or are PERMEABLE to the cell membrane? 3. What types of molecules CANNOT easily go through your...
Chapter 3 Cells and Their Functions 6. DESCRIBE METHODS BY WHICH SUBSTANCES ENTER AND LEAVE CELLS THAT REQUIRE CELLULAR ENERGY. EXERCISE 3-7 Write the appropriate term in each blank from the list below. exocytosis endocytosis active transport diffusion osmosis filtration pinocytosis 1. The process that utilizes a carrier to move materials across the plasma membrane against the concentration gradient using ATP 2. The movement of fluids through a membrane using a pressure gradient 3. The movement of water down its...