Biology Exam

What is diffusion ?

It is a movement of material from region of high concentration to region of low concentration without using energy.

What is state of equilibrium?

It is a state when all particle are evenly distributed

What is the importance of diffusion

The cell can take in beneficial materials from outside the cell

What is partially permeable membrane

cell membrane can allow some material to enter the cell

Facilitated Diffusion

some material are electrically charged and the protein on the cell membrane help these material to diffuse faster

what is osmosis

diffusion of water from less concentrated solution to higher concentrated solution

what are the 3 type of osmosis

Hypotonic - Isotonic - Hypertonic

Why plant wont burst in hypotonic solution

because the plant cell contained cell wall

What is turgid

the process which cell is not burst when put in hypotonic solution

what is plasmolysis

the process which plant cell loses lot of water and the memebrane are torn apart from cell wall making the cell die

Where can we observed active transportation

living cell and at the cell which used enerrgy for transporting material from region or low concentration to region of high concentration

Living cell contain how many organic materials

Carbohydrate - Lipids - Protein - Nucleic Acid

what element can be found in carbohydrate

Carbon - Hydrogen - oxygen

How type of carbohydrate are there

Monosacharide - Disachraide - Polyscacharide

Explain one the type and give example

....

What is the function of polysacchride

Storage Nutrient - Make structural substance