General Knowledge - Biology - Discussion

@ALL.

I have a question, we know that plant cell consists of cell wall and cell membrane too and cell membrane is permeable, but for osmosis cell wall also needs to be permeable otherwise how will the water will reach inside the cell. Is cell wall permeable?

What is difference between gram positive and gram negetive bacteria?

Both Gram-positive and Gram-negative bacteria may have a membrane called an S-layer. In Gram-negative bacteria, the S-layer is attached directly to the outer membrane. In Gram-positive bacteria, the S-layer is attached to the peptidoglycan layer. Unique to Gram-positive bacteria is the presence of teichoic acids in the cell wall. Some particular teichoic acids, lipoteichoic acids, have a lipid component and can assist in anchoring peptidoglycan, as the lipid component is embedded in the membrane.

Who is the discoverer of bacteria?

Charles Chamberland in 1884.

Its actually a bacteria called Vibrio cholerae that causes cholera and it is comma shaped.

Why photosynthesis occur more in white light?

Vibrio cholerae where it will present in our human body?

How pollen grains are formed in another?

What is the cause of typhoid?