MEDIUM
9th CBSE
IMPORTANT
Earn 100

Plasma membrane is called a selectively permeable membrane. Why?

Important Questions on The Fundamental Unit of Life

EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 3
Who proposed the fluid mosaic model of the cell membrane? (Antonie van Leeuwenhoek /Singer and Nicolson)
MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 4
State the common physical processes involved in the transport of substances across the plasma membrane.
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 5
Define diffusion.
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 6
What is the membrane surrounding the cell sap called?(Tonoplast/ Plasma membrane)
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 7
What is the major constituent of plant cell wall? (Cellulose/ Chitin/ Glycogen)
MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 8
What do you mean by plasmolysis?
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 9
State two important functions of the nucleus of a cell.
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 10
Define gene.