Isotonic, Hypotonic Solutions, Hypertonic Solutions

Q.

Define:

(i) Hypertonic solution;

(ii) Hypotonic solution;

(iii) Isotonic solution.

Q.

What is the difference between isotonic , hypotonic and hypertonic solutions?

Q.

What are the functions of cell wall?

Q.

What is a Hypertonic solution?

Q.

If a red blood cell (intracellular concentration of $0.9\%$ salt) is placed into a test tube containing $10\%$ salt solution, what would happen to it?

1. Nothing - the solution is isotonic to the interior of the red blood cell
2. The red blood cell would shrink as it loses water to the salt solution in the test tube.
3. It would fill with water and burst.
4. None of these

Q.

What will happen when Red blood cells are placed in water??

Q.

A person takes concentrated solution of salt after sometime he start vomiting. What is the phenomenon responsible for such situation? Explain

Q. What do you mean by the movement from higher concentration to lower concentration in cells? What is its actual meaning?

Q.

If cells of onion peel and RBC are separately kept in hypotonic solution, what among the following will take place? Explain the reason for your answer.

1. Both the cells will swell.

2. RBC will burst easily while cells of onion peel will resist the bursting to some extent.

3. a and b both are correct.

4. RBC and onion peel cells will behave similarly.

Q.

Why does the cell wall in plant cell do not burst when the solution is hypotonic ?

Q.

Discuss the effects when a plant cell is kept in hypotonic and hypertonic solution.

Can you please help me with the effects ??

Q.

Explain isotonic solution

Q.

Is cell wall semi-permeable or completely permeable?

Q.

The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is

1. Imbibition

2. Plasmolysis

3. Transpiration

4. Root Pressure

Q.

What would happen when eukaryotic cells are placed in hypotonic, hypertonic and isotonic solutions ?

Q.

When a living plant cell loses water through osmosis there is contradiction of the contents of the cell away from the cell wall .what is this phenomenon called?

Q.

What does the term plasmolysed mean when used to describe a cell ?

Q.

If two solutions of 5% glucose and 10% glucose are kept in a trough separated by a semipermeable membrane what will you observe after an hour?

Q.

Question 52
What are the consequences of the following conditions below?

(a) A cell containing higher water concentration than the surrounding medium

(b) A cell having low water concentration than the surrounding medium.

(c) A cell having equal water concentration to its surrounding medium.

Q.

Question 9 (iii)
Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
(a) Keep cup A empty
(b) Put one teaspoon sugar in cup B
(c) Put one teaspoon salt in cup C
(d) Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then observe the four potato cups and answer the following:

(iii) Explain why water does not gather in the hollowed out portions of A and D.

Q.

How can plant cells withstand much greater changes in the surrounding medium than the animal cell ?

Q.

If a solution outside the cell is more concentrated so that the cell loses water to its environment and shrinks the external solution is said to be _______ to the cell contents.

1. hypotonic

2. isotonic

3. hypertonic

4. sugar solution

Q.

Name the component by which the cell wall is made up of.

Q.

The cell wall in plant cells provide rigidity. What is the cell wall made up of?

__

Q. Which of the following statements is incorrect about cell wall?

1. It is found in human cells.
2. It is freely permeable.
3. It is made up of cellulose.
4. It provides rigidity and shape to cells.

Q. Movement of ions against electrochemical gradient is
A, pinocytosis
B, passive transport
C, active transport
D, diffusion

Q. Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration.

1. True
2. False

Q.

Q1) what happens when a Rhoeo leaf cell is kept in water ?

Q2) name the biomolecule in the form of which chromosomes contain information for inheritence of features from one generation to another?

Q.

What is exosmosis ?

Q.

Put a drop of blood in three types of liquids :

(a) pure water

(b) salt solution

(c) water containing 5M glucose and 0.9% Nacl

What will happen to blood drop and why ?? Explain your answer.