Trypsinogen and the other digestive enzymes are secreted into the duodenum using:
A. Simple Diffusion
B. Facilitated Diffusion
C. Active Transport
D. Indirect Active Transport
E. None of the above
None of the above.
Trypsinogen and other digestive enzymes are secreted or activated by regulators or absorptive cells. These cells releaae digestive enzymes such as enterokinase which activates trypsinogen
Trypsinogen and the other digestive enzymes are secreted into the duodenum using: A. Simple Diffusion B....
Compare osmosis, simple diffusion, facilitated diffusion and active transport: A) describe their differences and B) explain when cells have to use each one.
31. In the digestive system, some protease enzymes must be secreted as an inactive form and then activated later by proteolytic cleavage once outside of the secreting cell to prevent active proteases from damaging the secreting cells. What is the category of precursor proteins of this type? Select one: a. glycosides b. zymogens c. ubiquitins d. activins
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...
1) Respiratory gases cross the respiratory membrane by____ A) simple diffusion B) active transport C) osmosis D) facilitated diffusion 2) Which environment separated by the respiratory membrane would display the highest oxygen partial pressure? A) alveolar air B) pulmonary capillary blood
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....
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
Choose the item in column 2 that best matches each item in column 1. You may use a column 2 item more than once. A requires direct ATP hydrolysis CO2, O2, H20 driven by an ion gradient - A active transport and indirect active transport transports glucose across membranes Bindirect active transport B. Na glucose symport facilitated diffusion (passive transport) Na */ ATPase pump D, active transport F. transports small, nonpolar molecules facilitated diffusion and active transport A F. simple...
Oxygen and carbon dioxide enter and exit cell membranes by a) active transport b) facilitated diffusion c) passive diffusion d) antiport
20) - 24) Diffusion is a process by which a substance A) goes down its concentration gradient. B) goes from lesser to greater concentration C) goes up its concentration gradient D) is at equilibrium 25 25) What product(s) do plants produce during photosynthesis that is/are used by humans and other animals? A) glucose B) carbon dioxide C) oxygen D) glucose and oxygen 26) The term that describes the diffusion of water is A) simple diffusion. B) equilibrium C) facilitated diffusion...
Chapter 5 1. Compare and contrast simple diffusion with facilitated diffusion being sure to mention direction of movement, source of energy, and how movement across the membrane occurs. 2. Compare and contrast the terms active transport with facilitated diffusion addressing the same issues as above. 3. Draw a diagram of a membrane receptor and include the following details. Include a depiction of the plasma membrane with which it is associated; label the locations of the extracellular space, the cytoplasm, and...