Home
Class 12
BIOLOGY
The plasma membrane (pm) forms the bound...

The plasma membrane (pm) forms the boundary of lung cells .
Which of the following statements is true for the pm ?
A . Pm is a semipermeable membrane
B. Water moves across the pm by Osmosis
C. `O_(2)` and `CO_(2)` can cross the pm by diffusion .
D. `Na+` and `K+` ions can pass the pm by diffusion .

A

A,B,C & D

B

A,B & D

C

B, C & D only

D

A, B & C only

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following orbitals are possible ? 1pm, 2s, 3f, 3d

Which of the followig lanthanoid ions are coloured (a). Lu^(+3) (b). Pm^(+3) (c). Sm^(+3) (d). Eu^(+3)

The density of AgCl is 5.56 g cm^(-3) .Length of the unit cell is 555.2 pm . Then which of the following is TRUE about the predicted nature of the solid ?

Which of the following statement are true . (i) In the structure of HNO_3 , the N- O bond (121 pm) is shorter than the N-ON bond (140pm) . (ii) All the P - Cl bonds in PCl_5 are not equivalent . (iii) I - Cl is more reactive than I_2 .

A few ions are molecules are transported across the membrane by an energy independent process A. A few ions or molecules are transported across the membrane through carrier proteins, by an energy dependent process -B, Neutral solutes may move across the membrane by a process-C. Movement of water by diffusion across the membrane is - D. Among A,B,C and D which of the following take place against conc,gradient ?

Which of the following statement is correct. (A) The electrical potential difference across the polarised plasma membrane is called as action potential in resting stage. (B) Na^+ ion is responsible for generating an action potential. (C) The impulse is action potential

A crystalline solid AB has NaCl type structure with radius of B^(-) ion is 250 pm. Which of the following cation can be made to slip into tetrahedral site of crystals of A^(+)B^(-) ?

The density of KBr is 2.75 gm//c c length of the unit cell is 654pm ( atomic masses of K=38,Br=80) then what is true about the predicted nature of the solid

Read the following statements and select the correct option. Statement A: Polar molecules can move across the membrane by the process of simple diffusion along the concentration gradient. Statement B: The nuclear matrix or nucleoplasm contains nucleolus and chromatin.