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What is osmosis?

Osmosis is the passive process by which water moves through a partially permeable membrane from a high concentration of water to a low concentration of water down a concentration gradient.
DB
Answered by Davina B. • Biology tutor
4923 Views

state three differences between a plant cell and animal cell.

any three from: no cell wall in animal cells/ (cellulose) cell wall in plant cell centrioles present in animal cell, not in present in plant cell (permanent) vacuole in plant cell, lack of (permanent) vacuol...
RP
Answered by Rohan P. • Biology tutor
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How does HIV invade cells?

The way a simple virus invades a cell is with double stranded DNA replication. The virus has a coat of protein covering the DNA, once bound to the side of the cell the virus releases the DNA where it is then...
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Answered by Susanna C. • Biology tutor
4391 Views

Both Fish and Mammals have ventilation mechanisms. Explain the function of ventilation mechanisms and name the muscles which operate the ventilation mechanism in mammals.

The function is to move the respiratory medium (air or water) over the respiratory surface; to maintain the concentration gradient. In mammals, the diaphragm and the intercostal muscles are responsible for v...
BA
Answered by Bobola A. • Biology tutor
10062 Views

What is aerobic respiration and why is it important in the human body?

Aerobic respiration is the process by which energy is released from glucose in the presence of oxygen (as indicated by the word 'aerobic'). While in reality it is a complex, multi-step series of reactions co...
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Answered by Harriet L. • Biology tutor
20182 Views