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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
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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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(diagram of compressed and enlarged cells) Why has the plant cell shrunk when put in salty water

This occurs due to the phenomenon of osmosis. The basic principle of osmosis is that when two substances of different saline concentration are separated by a permeable divider (plant cell wall) the concentra...
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Answered by Thea W. • Biology tutor
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Name the components/organelles of both animal & plant cells. Give a brief description of their functions.

Animal Cells Cell membrane - Made up of lipids and proteins and allows for passive diffusion into the cell. Cytoplasm - Contains cytosol & cell organelles. Nucleus - Controls the activities of the cell. ...
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Answered by Sameerah V. • Biology tutor
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What process of chromosome replication is used to produce gametes?

Meiosis. Meiosis produces genetically different haploid daughter cells. Mitosis is the other method of chromosome replication but it produces diploid clone daughter cells. If sperm and eggs were produced thi...
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Answered by Lucy C. • Biology tutor
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