Home
Class 12
BIOLOGY
[A] : Poisons like cyanide inhibit Na^+ ...

[A] : Poisons like cyanide inhibit `Na^+` efflux and `K^+` influx during cellular transport.
[R] ATP supply required for the `Na^+` and `K^+` exchange pump is stopped.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • Cell Reproduction

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|15 Videos

  • Drug Addiction

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|20 Videos

Similar Questions

Explore conceptually related problems

Poisons like cyanide inhibit Na^(+) influx during cellular transport. This inhibitory effect is reversed by an injection of ATP. This demonstrates that

Poisons like cyanides inhibit Na^(+) efflux and K^(+) influx. The effect is reversed by injection of ATP indicating that

In Na^+_- K^+ Pump of active transport there is

In Na^(+) - K^(+) Pump of active transport there is

[A] : Most of the solutes in ECF and cytoplasm are electrolytes, i.e., electrically charged par- ticles or ions. Maintenance of an equilibrium between intracellular fluid and ECF is vitally essential for all cells. [R]: This osmotic equilibrium is maintained by sodium and potassium pump of the cells. It operates with the help of a Na^+, K^+ ATP as enzyme located in the cell membrane.

Consider the following statements regarding Na-K Pump 1. It utilizes ATP. 2. It acts on a resting neuron. 3. It involves efflux of 3 Na^(+) per ATP. 4. It involves influx of 2 K^(+) per ATP. 5. Metabolic poisons stop the pump. a. 1 and 2 b. 1, 2 and 5 c. 3, 4 and 5 d. 1, 2, 3, 4 and 5

[A] : Active transport results in solute movement against a concentration gradient . [R] : Acitve transport of Na^(+) , K^(+) is energized by ATP .

Find the correct pair of statements (i) Influx of Cl- into guard cells during stomatal opening is active. (ii) Entry of sucrose from companion cells into sieve tubes at source involves expenditure of energy (iii) At the sinks sucrose moves out of phloem by passive transport (iv) Efflux of K^(+) from guard cells during stomatal closure does not involve energy expenditure