Q. Plasma membrane does not have carrier molecules for : Active transport Simple diffusion Faciliated diffusion Na+−K+ pump Solution : Correct option : B In facilitated diffusion, molecules diffuse across the…
Q. Primary and secondary active transports, both : Generate ATP Use ATP Can move solutes against their concentration gradients Include passive movement of glucose molecule Solution : Correct option :…
Q. Which statement is incorrect for ion-channels? (a) They are proteins (b) All ions pass through same channel (c) Movement through them is diffusion (d) Movement through them is from…
Q. Which one of the following is not a micro-element for plants : (a) Cu (b) Zn (c) Cr (d) B Solution : Correct option : C Plants require many…