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Biology
GCSE

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...

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Answered by Stephen A. Biology tutor
2641 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
2430 Views

(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 concen...

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Answered by Thea W. Biology tutor
2402 Views

Name the components/organelles of both animal & plant cells. Give a brief description of their functions.

Animal CellsCell 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 t...

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Answered by Sameerah V. Biology tutor
2928 Views

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...

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Answered by Lucy C. Biology tutor
2547 Views

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