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Describe and explain some of the direct and indirect effects of carbon dioxide on organisms?

Carbon dioxide only comprises 0.04 % of the earth’s atmosphere but it is a vital molecule in many processes and effects organisms directly with photosynthesis in plants, body functions causing global warming...
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Answered by Katie D. • Biology tutor
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Explain these 3 terms in relation to cells and osmosis: isotonic, hypertonic and hypotonic?

These 3 terms all describe the 3 possible concentrations of a solution in respect to the water potential surrounding a cell. Isotonic solution (Iso=same and tonic=strength) is where the extracellular fluid h...
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Answered by Katie D. • Biology tutor
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What are the main components and properties of a plasma membrane?

A plasma membrane is composed mainly of an unordered phospholipid bilayer (double layer) embedded with membrane proteins which forms a thin flexible sheet. This gives the membrane several general properties ...
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Answered by Katie D. • Biology tutor
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Describe the effects of cigarette smoke on the airway.

Cigarette smoke contains a number of harmful chemicals such as Tar, Carbon monoxide and Nicotine. Tar settles on the lining of the airway and alveoli, increasing the diffusion distance for the gases oxygen a...
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Answered by Kristen D. • Biology tutor
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What are Enzymes and how do they work?

What is an Enzyme? Enzymes have an essential role in the reactions in the body from respiration to digestion. Enzymes are globular proteins with a specific tertiary shape. Enzymes are Biological Catalysts Su...
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Answered by Katie D. • Biology tutor
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