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What is the consequence of lung fibrosis on gaseous exchange?

Fibrosis is the formation of scar tissue due to injury of the alveolar walls (small sacs at the end of bronchioles that are responsible for gaseous exchange), from smoking or other small particles. Due to th...
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Answered by Stephen A. • Biology tutor
3360 Views

What is an enzyme?

Protein.Catalyst.Not used up in the process.An enzyme is a protein which acts as a catalyst to speeds up a reaction but is not used up in the process.
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Answered by Alexander L. • Biology tutor
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Describe how blood is pumped around the heart and the body.

Deoxygenated blood from the body is delivered to the right atrium by the vena cava. The right atrium contracts and blood flows into the right atrium. The right ventricle then contracts and blood is pumped to...
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Answered by Bel R. • Biology tutor
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How does the water potential in the medulla of the kidney remain lower than the water potential in the loop of Henle?

The loop of Henle is designed so that the water moves out of the thinner walled descending limb by osmosis and then ions such as Na+ and Cl- are actively transported out of the ascending limb. This active tr...
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Answered by Oliver G. • Biology tutor
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three part question 1. what are dissacharides 2. what are maltose, lactose and sucrose formed of 3. what is the bond between them called

the biological molecule formed from the condensation reaction between 2 monosaccharidesmaltose is 2 glucose monomers, lactose is glucose + galactose and sucrose is glucose + fructosea glycosidic bond
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Answered by Omkaar D. • Biology tutor
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