Active transport must function continuously because__________.a. plasma membranes wear outb. cells must be in constant motionc. facilitated transport opposes active transportd. diffusion is constantly moving the solutes in the other direction

What is the Description and Examples in the body of these Cell transport? Explain in 2-3 sentencesDescription:Examples in the body: a. Diffusion b. Osmosis c. Facilitated Diffusion

secondary active transport depends on which of the following principals a. sodium is pumped pout of the cells against a concentration gradient by [primary active transport b. sodium moves out the cells with a concentration gradient  c. primary active transport is necessary to pump sodium into the cell from higher to lower concentration d. diffusion causes sodium to move our of the cell

one reason active transport has a limited maximum transport rate at which it can progress is due to the fact that a. energy required is not available inside the cell b. carrier proteins are not on the surface of the cell membrane  c. ion channels are limited in size d. the number of carrier proteins is limited and therefore they can become saturated

How does each of the following molecule pass through the plasma membrane in the described scenarios?   A. Both simple diffusion and facilitated diffusion B. facilitated diffusion C. simple diffusion D. active transport   1. Molecular oxygen (O2) and carbon dioxide (CO2) traveling downtheir concentration gradient.   2. inorganic ions traveling down their concentration gradient   3. glucose traveling against its concentration gradient   4. water molecules (H2O) traveling down their concentration gradient

Glucose is transported across the cell membrane of intestinal cells. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm. Using this information, which transport mechanism is most probably functioning in the intestinal cells? A facilitated diffusion B simple diffusion C osmosis D concentration gradient

Match the transport mechanisms with their descriptions.  (1) diffusion (2) facilitated diffusion (3) filtration (4) active transport (5) endocytosis (6) exocytosis A. the cell membrane engulfs a particle or substance, drawing it into the cell in a vesicleB. movement down the concentration gradient with a carrier protein, without energy inputC. movement down the concentration gradient without a carrier protein or energy inputD. a particle or substance leaves a cell in a vesicle that merges with the cell membraneE. movement against the concentration gradient with energy inputF. hydrostatic pressure forces substances through membranes

For the following modes of transport for membranes, tell whether the flow is with or against chemical potenial. Meaning +deltaG or -deltag A. Passive Diffusion B.Faciliated Diffusion C.Active Transport

Which of the following will decrease diffusion rate (a.k.a. rate of flux) of a particle across the plasma membrane? O Applying a polymer that makes the particle more hydrophobic. O Changing the diameter of the particle from 1uM to 10uM. O Both of these will decrease diffusion rate ONeither of these will decrease diffusion rate

Several factors influence the diffusion rate of substances across plasma membrane. A decrease in ___ will increase the rate of diffusion of a substance across a plasma membrane. Temp Steepness of concentration gradient The mass of the diffusing substance  The membrane surface area available for diffusion which one is correct?