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What is a gene?

A gene is a section of DNA that codes for a specific protein.
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Answered by Bethany C. • Biology tutor
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What is the difference between aerobic and anaerobic respiration?

Aerobic respiration takes place when oxygen is present, whereas anaerobic respiration takes place when oxygen is absent. Both processes take place in the mitochondria within the cells and releases energy.
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Answered by Bethany C. • Biology tutor
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Understanding HIV, vaccines and monoclonal antibodies

To understand how HIV causes infection, students should have an appreciation for its basic virus structure and how it infects humans. Following infection, how does it cause disease and eventually AIDS? Why a...
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Answered by Subi S. • Biology tutor
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How does the process of transcription work?

Transcription is the first part of gene expression - making DNA into functional proteins. It occurs in the nucleus of cells. During transcription, information from DNA is transcribed into messenger RNA (mRNA...
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Answered by Anja D. • Biology tutor
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How does osmosis work?

Thinking of osmosis represented by two water towers attatched with a pipe at the bottom helped me to understand. If one tower has a higher level of water than the other, water will flow into the other to eve...
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Answered by Helena B. • Biology tutor
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