Exam (elaborations)
Bio 344 Quiz -2 Questions answers latest update
- Course
- Bio 344
- Institution
- University Of Texas - Austin
Bio 344 Quiz -2 Questions answers latest update
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Bio 344 Quiz #2which of the following diffuses slowest across a plasma membrane - large
negatively charged molecules
which of the following determine the direction facilitated diffusion of an
uncharged molecule across a membrane will occur - relative concentrations of the
molecule on both sides of the membrane
both k+ and Na+are transported against their electrochemical gradient, true or
false? - true
which of the following statements concerning coupled transporters are true?
A. one type of molecule is transported against its electrochemical gradient, the
other type of molecule is transported along its electrochemical gradient
B.some coupled transporter are symports
C.some coupled transportes are antiports
D. all of the above
E. none of the above - all of the above
membrane phospholipids are__________molecules, composed of a hydrophobic
"head"and a hydrophobic "tail". - amphiphilic
, a CHANNEL protein is used transport an uncharged molecule across the plasma
membrane. this is? - a process in which molecules are being transported along
their concentration gradient
the Sodium-Glucose transporter and the Sodium/Potassium pump are both
examples of what type of transport? - active transport
Which of the following is true about facilitated diffusion? - it is a process by which
molecules or ions are transported along their electrochemical gradient
which of the following are part of the ABC transporter superfamily? - the
multidrug resistance protein (MDR)
consider the following forms of membrane transport: uniport, symport, and
antiport. which one deals with two solutes, but only one direction? - symport
membrane transport proteins are specific in selecting the molecules they
trasnport - true
passive transport does not require energy? - true
ABC transporters require energy in the form of ATP hydrolysis? - true
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