1st sem - W1

Question 1

1. Which of following is/are NOT true? Plasma membrane protein may serves as:
2. Signaling molecule
3. Hormone receptors
4. Secreted molecules
5. Ion channels
6. Transporters

Answer 1

3. Secreted molecules

Question 2

2. A solution could be in a same time
3. Hyperosmotic and hypertonic
4. Isosmotic and hypertonic
5. Isosmotic and hypotonic
6. Isosmotic and hypotonic

Answer 2

1, 3, 4

Question 3

3. Which of the following is/are responsible for the movement of O2 from the aveoli into the blood in the pulmonary capillaries?
4. Active transport
5. Passive diffusion
6. Facilitated diffusion
7. Filtration
8. Secondary active transport

Answer 3

2

Question 4

4. Which of the following statements about GLUT transporters are true?
5. GLUT1 can be found in RBCs
6. The Vmax value of GLUT1 is higher than GLUT2
7. GLUT4 transporter is insulin insensitive
8. The GLUT2 cannot be saturated
9. GLUT2 can be bound on pancreatic Beta-cells

Answer 4

1, 2, 5

Question 5

5. The following statements characterize transepithelial transport of NaCl in the kidney distal tubules
6. Paracellular transport of Cl- ions is an active process
7. It involves Na+/K+ -ATPase located in the apical membrane
8. It is not accompanied by H2O absorption
9. K+ channels are required for the transports
10. It may involve epithelial Na+ channels in the apical membrane

Answer 5

5

Question 6

1. Which of the following statement(s) is/are true?
2. Proteosomes have a degradative function
3. The smooth ER in mammalian cells bears huge amount of ribosomes
4. The plasma membrane separates the cell interior from the environment
5. The nucleus of the human cells consist of 22 pairs of autosomes and 2 pairs of chromosomes
6. The mitochondria in eukaryotic cells have their own DNA

Answer 6

1, 3, 5

Question 7

2. Extracellular [K+] is
3. 0.15 mol/L
4. 150 mmol/L
5. 0.004 mol/L
6. 4 mM

Answer 7

3, 4

Question 8

3. At 154 mM Nacl (isotonic), the RBC has a normal volume. If a RBC is put into 170 mM NaCl solution, the cell will:
4. Dissolve
5. Shrink
6. Remain the same
7. Burst
8. Swell

Answer 8

2. Shrink

Question 9

5. Which of the following(s) are antiporters?
6. Na+/K+-ATPase
7. Na+/Ca2+ exchanger
8. Cl-/HCO3- exchanger
9. SGLT1
10. Na+/amino acid co-transporter

Answer 9

1, 2, 3