Explain your answers 4. 4. Which of the following is CORRECT regarding ion conce

Question

Explain your answers

4.

4. Which of the following is CORRECT regarding ion concentrations within a typical resting mammalian cell?

a. Ca2+ and Cl- are both maintained at high concentrations within the cell by the action of a calcium/choride ATPase

b. the intracellular concentration of Na+ is maintained at much higher concentration than intracellular K+

c. inorganic anions play no role in the maintenance of ion concentration

d. Calcium is maintained at an extremely low concentration within the cytoplasm

e. K+ is maintained at an extremely low concentration within the cytoplasm

5. Which of the following is TRUE?

a. Fatty acid chains are hydrophobic due to many non-polar bonds between carbon and hydrogen

b. the core of the plasma membrane easily binds the heavy metal salt stains used in transmission electron microscopy

c. the hydrophilic core of the plasma membrane permits simple diffusion of glucose

d. the hydrophilic head groups of phospholipids repel the stains used for transmission electron microscopy

e. none of the above

Explanation / Answer

4) Calcium is maintained at an extremely low concentration within the cytoplasm

the conceration of Na+ is 8 - 12 times lower in blood cells, then conceration of calicum free in the cytosol. so the calcium is in low conceration the cells are cultured and dilute in salt soultion.

5) the hydrophilic head groups of phospholipids repel the stains used for transmission electron microscopy

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.