APHY 201 Chapter 1 Exam prep Questions with Correct Answers

APHY 201 Chapter 1 Exam prep Questions with Correct Answers


Question 1:
0.9 NaCl0.59.00.70.1
Answer:
....C. 9.0% NaCl


Question 2:
Carrier molecules involved involved in facilitative diffusion or active transport:are
membrane-bound proteinstransport solvent as well as solutemay be carbohydrate, lipid,
proteinEnter the plasma membrane on one surface and leave it from the other surfacealways
carry solutes out of the cell
Answer:
....A. are membrane bound proteins


Question 3:
The organelle where most of the cell's proteins are synthesized is the:A nucleusB LysosomeC
rough ERD smooth ERE Centrosome
Answer:
....C. rough ER


Question 4:
Which of the following requires a supply of metabolic energy because the solute moves
"uphill"?A dialysisB osmosisC Facilitative diffusionD net difusionE Primary Active Transport
Answer:
....E Primary Active Transport


Question 5:
0.9 NaCl
0.5
9.0
0.7
0.1
Answer:
....C. 9.0% NaCl

,Question 6:
Carrier molecules involved involved in facilitative diffusion or active transport:
are membrane-bound proteins
transport solvent as well as solute
may be carbohydrate, lipid, protein
Enter the plasma membrane on one surface and leave it from the other surface
always carry solutes out of the cell
Answer:
....A. are membrane bound proteins


Question 7:
The organelle where most of the cell's proteins are synthesized is the:
A nucleus
B Lysosome
C rough ER
D smooth ER
E Centrosome
Answer:
....C. rough ER


Question 8:
Which of the following requires a supply of metabolic energy because the solute moves
"uphill"?
A dialysis
B osmosis
C Facilitative diffusion
D net difusion
E Primary Active Transport
Answer:
....E Primary Active Transport


Question 9:
B can be blocked by competitive inhibitors
Answer:
A is much slower


Question 10:
D requires expenditure of energy
Answer:
C reaches a maximum rate

,Question 11:
E is not affected by a change in concentration gradient A process called
involves invagination of the plasma membrane
A osmosis
B facilitated diffusion
C exocytosis
Answer:
....A. is much slower (no carrier) D endocytosis


Question 12:
E simple diffusion
Answer:
....D. Endocytosis


Question 13:
A secretory vesicle leaves the cell by:
A net diffusion
B exocytosis
C endocytosis
D phagocytosis
E pinocytosis
Answer:
....B exocytosis (exit)


Question 14:
Transmission at the neuromuscular junction is dependent upon:A curareB acetylecholineC
noradrenalineD seratoninE actin & myosin
Answer:
....B acetylcholine


Question 15:
Transmission at the neuromuscular junction is dependent upon:
A curare
B acetylecholine
C noradrenaline
D seratonin
E actin & myosin
Answer:
....B acetylcholine

, Question 16:
D it is affected by change in temperature
Answer:
C it is kind of net diffusion


Question 17:
E a membrane carrier may be required
Answer:
....E. A membrane carrier may be required


Question 18:
D small diameter myelinated fibers
Answer:
C large diameter myelinated fibers


Question 19:
E none of the preceding because they conduct impulses at the same velocty
Answer:
....B. small diameter


Question 20:
D solvents are transported from higher to lower concentration
Answer:
C membrane carriers assist the downhill movement of a solute


Question 21:
E membrane-bound carriers may or may not be required
Answer:
....C membrane carriers assist the downhill


Question 22:
Transmission at the neauromuscular junction (NMJ) is dependent upon:
A ach
B acetylocholine
C cholinesterase
Answer:
movement of a solute D sodium ions