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What is meant by the "fluid-mosaic" model of cell membrane structure?

The cell membrane consists of a double layer of phospholipids, with proteins floating in it. Phospholipids are a type of molecule with a phosphate head, and fatty tails, which form a double layer around the ...
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Answered by Harriet H. • Biology tutor
29989 Views

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
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What is the difference between realised and fundamental niche?

Realised and fundamental niche are two different environmental conditions in which species exist in an ecosystem. The fundamental niche is the range of environmental conditions in which a species is technica...
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Answered by Line W. • Biology tutor
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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...
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Answered by Bobola A. • Biology tutor
9899 Views

Discuss the products of glycolysis?

NET 2 ATP and 2 molecules of 3 carbon Pyruvate
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Answered by Imogene B. • Biology tutor
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