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Describe how antibiotic resistance occurs.

Firstly, antibiotic resistance has to be gained by a bacterium through the mutation of a gene. This can occur due to, for example, the overuse of antibiotics or failure to complete a full course of antibioti...
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Answered by Anita H. • Biology tutor
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What is osmosis and why does it occur?

Osmosis is the movement of water molecules from an area of high water concentration to an area of low water concentration through a partially/selectively permeable membrane (PPM) . It occurs because of conce...
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Answered by Anita H. • Biology tutor
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What are the differences between facilitated diffusion and active transport?

Facilitated diffusion doesn't require ATP whereas active transport does. This is because active transport involves the movement of particles against its concentration gradient, whereas facilitated diffusion ...
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Answered by Upasana T. • Biology tutor
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What is the process of maintaining a constant internal enviornment, and why does it matter?

The process by which our bodies maintain a constant internal environment is homeostasis. This includes things such as body temperature, blood glucose levels and pH levels. This is important because there a v...
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Answered by Eleanor M. • Biology tutor
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How would you explain oxidative phosphorylation and chemiosmosis?

Reduced coenzymes produced in the Krebs cycle; glycolysis and Link Reaction (Reduced NAD and FAD) carry Hydrogen ions and electrons to the inner mitochondrial membrane , within the membrane are a number of p...
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Answered by Joseph B. • Biology tutor
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