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How might you estimate the population size for a species of bird?

As birds are a motile organism, we would use the mark-release-recapture method. First, capture a sample of individuals (possibly through mist netting), mark them (e.g. a wing tag or leg ring) and release. Th...
KL
Answered by Kieran L. • Biology tutor
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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 into 4 st...
GM
Answered by George M. • Biology tutor
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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 enzyme ...
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Answered by Vasiliki V. • Biology tutor
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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 site...
JH
Answered by Johanna H. • Biology tutor
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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
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