Oxygen and carbon dioxide enter and exit cell membranes by
a) active transport
b) facilitated diffusion
c) passive diffusion
d) antiport
Oxygen and carbon dioxide enter and exit cell membranes by a) active transport b) facilitated diffusion...
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...
cell biology Which of the following is an active transport mechanism? a Facilitated diffusion of potassium ions across the membrane through an open potassium channel b Movement of water into a cell c Sodium ions moving out of an animal cell bathed in physiological saline d Movement of CO2 out of a cell e None of the above
A correct distinction between facilitated diffusion and active transport of a substance across a biological membrane is that . . . A. active transport requires conformational changes in the transport protein associated with the transport process, and facillitated diffusion does not. B. active transport requires integral membrane protein to carry out the transport, and facillitated diffusion does not. C. facilitated diffusion depends on an existing energy gradient acting on the transported substance, while active transport makes such a gradient. D....
Diffusion: Which following statement is incorrect? Select one: a. Facilitated diffusion requires a transport protein b. It is a form of passive transport c. Isotonic solutions have an equal amount of solute on both sides of the membrane - no change in shape d. Exocytosis involves the diffusion of molecules out of a cell e. Hypotonic solutions result in cell swelling
1 Label the following diagram Molecules cross cell membranes by by passive transport |(a) Active may be moving down moving against requires (b) ATP uses diffusion (d) uses (e) of of (c) polar molecules and ions 2- List the five properties/characteristics of enzymes:
Compare osmosis, simple diffusion, facilitated diffusion and active transport: A) describe their differences and B) explain when cells have to use each one.
Which of the following features is/are shared by both active transport and facilitated diffusion? A) Saturability B) Energy Input C) Both D) Neither
ane Transport - Facilitated Diffusion Side with higher concentration of molecules Transport protein Plasma membrane Facilitated diffusion causes a net movement of molecules down their concentration gradient. mework : Membrane Transport - Active Transport Side with higher concentration of square molecules Transport protein Energy input from the cell Plasma membrane Side with lower concentration of square molecules
Classify the phrases based on whether they describe or give an example of facilitated diffusion, active transport, or both. Facilitated diffusion Active transport Both Answer Bank movement to area of lower concentration movement across a membrane movement assisted by proteins glucose transport into muscle cell sodium ion transport out of cell requires energy
After absorption, niacin enters the cell wall by _____________________. active diffusion both active and passive diffusion passive diffusion inactive transport