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Biology
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Describe the process of DNA translation

Defining 'translation' as the process of protein synthesis where an mRNA sequence produced in DNA transcription is translated into an amino acid sequence (polypeptide)
Translation can be subdivided ...

GM
Answered by George M. Biology tutor
2180 Views

Explain the effect of inhibitors on the activity of enzymes.

Enzyme inhibitors are substances that alter the catalytic action of an enzyme. There are two types of inhibitors: competitive and non-competitive. Competitive inhibitors bind at the active site of an enzy...

VV
Answered by Vasiliki V. Biology tutor
5146 Views

Describe the role of calcium ions and ATP during muscle contraction

Calcium ions diffuse from the sarcoplasmic reticulum and bind to troponin. This binding to troponin causes tropomyosin- which at rest blocks the actin-myosin binding sites- moves to expose these binding s...

JH
Answered by Johanna H. Biology tutor
19546 Views

Respiration transfers energy from glucose for muscle contraction. Describe how glucose from the small intestine is moved to a muscle cell.

Glucose is absorbed by diffusion into the bloodstream./ Then blood delivers glucose to muscles in capilleries.

LS
Answered by LUKE S. Biology tutor
16086 Views

Microorganisms cause diseases. The human body has many ways of defending itself against microorganisms. Describe two ways the body prevents the entry of microorganisms.

Any two from:acid in the stomach kills pathogens in food/ skin forms a barrier or produces antimicrobial secretions/ hairs in the nose trap pathogens/ trachea or bronchi has mucus which traps pathogens

LS
Answered by LUKE S. Biology tutor
2758 Views

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