Tag: osmosis and plasmolysis

Questions Related to osmosis and plasmolysis

Active transport from outside to inside of molecule across a membrane requires

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Cyclic AMP

  2. Acetyl chlorine

  3. ATP

  4. Phloroglucinol

Show answer
Correct Option: C
Explanation:

Active transport from outside to the inside of molecules across a membrane requires ATP. It is required in transferring solutes across the membrane may be through an ATPase which creates ph gradient across the membrane. Thus, the correct option is C.

ATP molecules combine with carrier molecules and allow passage of substances.

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Along concentration gradient

  2. Against concentration gradient

  3. Both A and B

  4. ATP is not required

Show answer
Correct Option: B
Explanation:

In the active transport, there is a movement of some substance from low concentration to the high concentration i.e., against the concentration gradient wit the help of ATP combined with carrier molecules.

Thus, the correct answer is option B.

All mineral salts absorbed in cells are

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Ions

  2. Atoms

  3. Molecule

  4. All of the above

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Correct Option: A
Explanation:

All mineral salts are present in soil as charged ions adsorbed to clay particles. The minerals are absorbed in charged forms and not in uncharged forms through the exchange process. Thus, the correct answer is option A.

Glucose and amino acids are absorbed in the intestine by

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Active transport

  2. Passive transport

  3. Selective absorption

  4. Osmosis

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Correct Option: A

In which one of the following, expenditure of energy is required?

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Osmosis

  2. Diffusion

  3. Active transport

  4. Passive transport

Show answer
Correct Option: C
Explanation:

Active Transport uses energy to pump molecules against a concentration gradient and is carried out by membrane proteins.

Which of the following means of transmembrane transport involves the expenditure of energy by the cell and can move materials up a concentration gradient?

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Osmosis

  2. Facilitated diffusion

  3. Simple diffusion

  4. Active transport

Show answer
Correct Option: D
Explanation:
In one form of transport across the cell membrane, ATP is utilized. The utilization of an ATP molecule provides the cell with an energy boost which enables the transport of different molecules across the cell membrane. This is termed as active transport of molecules across the cell membrane.
So, the correct answer is 'Active transport'.

Decreasing order concentration of minerals inside cell is

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Ca$^{+2}$$-$K$^+$$-$Na$^+$.

  2. K$^+$$-$Ca$^{+2}$$-$Na$^+$.

  3. K$^+$$-$Na$^+$$-$Ca$^{+2}$.

  4. Na$^+$$-$K$^+$$-$Ca$^{+2}$.

Show answer
Correct Option: C
Explanation:
Potassium ions are usually higher inside the cell than outside the cell, and its concentration inside the cell is about 10 to 30 fold higher than the other components, while sodium ion is higher outside the cell than inside the cell. 
So, the answer is C.

Choose the correct answer from the alternatives given.
Active transport

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Requires an input of ATP

  2. Is involved in diffusion

  3. Occurs in osmosis and facilitated transport

  4. All of the above

Show answer
Correct Option: A
Explanation:
In one form of transport across the cell membrane, ATP is utilized. The utilization of an ATP molecule provides the cell with an energy boost which enables the transport of different molecules across the cell membrane. This is termed as active transport of molecules across the cell membrane.

So, the correct answer is 'Requires an input of ATP'.

Energy is required for

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Active transport

  2. Facilitated transport

  3. Diffusion

  4. All of these

Show answer
Correct Option: A
Explanation:
In one form of transport across the cell membrane, called active transport, ATP is utilized. The utilization of an ATP molecule provides the cell with an energy boost which enables the transport of different molecules across the cell membrane.
So, the correct answer is 'Active transport'.

Choose the correct answer from the alternatives given.
Which of the following processes requires the greatest expenditure of energy by the cell?

biology movement in and out of the cell transport of molecules osmosis and plasmolysis plant water relation

  1. Facilitated diffusion

  2. Diffusion

  3. Active transport

  4. Osmosis

Show answer
Correct Option: C
Explanation:
In one form of transport across the cell membrane, ATP is utilized. The utilization of an ATP molecule provides the cell with an energy boost which enables the transport of different molecules across the cell membrane. This is termed as active transport of molecules across the cell membrane.

So, the correct answer is 'Active transport'.