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Question
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
Addition of salt to pickles prevents growth of bacteria because they turn turgid.
Options
True
False
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Solution
This statement is false.
Correct statement: Addition of salt to pickles prevents growth of bacteria because they turn flaccid.
Explanation:
Addition of salt to pickles increases the concentration and when bacterias come in contact, it undergoes exosmosis and thus becomes flaccid or plasmolysed leading to its death.
RELATED QUESTIONS
Give the equivalent terms for the following:
Pressure of the cell contents on the cell wall
Complete the following statements:
Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than ……………… the cell.
Explain how soaked seeds swell up and burst their seed coats.
The following diagram represents a plant cell after being placed in a strong sugar solution.
Guidelines 1 to 5 indicate the following
(1)Cell wall, (2) Strong sugar solution, (3) Protoplasm (4) Large vacuole, (5) Nucleus
(1)What is the state of the cell shown in the cell shown in the diagram?
(2)Name the structure which acts as a selectively permeable membrane.
(3)If the cell had been placed in distilled water instead of strong sugar solution, which feature would not have been seen?
(4)Name any one feature of this plant cell which is not present in an animal cell.
Distinguish between the following:
Hypotonic and Hypertonic solutions
Name the following:
The pressure with which the molecules of a substance diffuse.
Give Reasons for the following.
On sprinkling common salt on grass growing in a lawn, the grass is killed.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
During exosmosis, water moves from inside the cell to the outside of the cell.
Multiple Choice Question:
Marine fish when thrown under tap water bursts because of:
