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Biology
A Level

Which body organ has both an exocrine and endocrine function?

Exocrine glands release their product to the external environment, while endocrine glands release their product directly into bodily fluids. The pancreas does both: it releases digestive enzymes into the ...

Answered by Oana S. Biology tutor
2435 Views

Cholera causes an influx of Chloride ions into the lumen of the bowel. How would this cause diarrhoea?

The influx of chloride ions into the lumen of the small bowel causes the water potential to decrease (become more negative). This causes an increased water potential difference between the lumen and the c...

Answered by Joseph T. Biology tutor
7347 Views

What is the difference between a competitive and a non competitive inhibitor?

Competitive inhibitors have a molecular shape similar to the substrate therefore compete with the substrate for the active site on the enzyme. If the concentration of substrate increases, the effect of th...

Answered by Dominique N. Biology tutor
2032 Views

Describe how glucose is taken up by cells?

Glucose is absorbed into the bloodstream from the small intestine. In the bloodstream, glucose stimulates insulin release by pancreatic beta cells.Insulin binds to the insulin rece...

Answered by Ahmad M. Biology tutor
3233 Views

outline the steps of DNA transcription


RNA polymerase is the enzyme used to bind the DNA section of interest and recruit the free bases needed to form a new mRNA strand. DNA is transcribed on to an mRNA strand because it is too large to ...

Answered by Adaeze A. Biology tutor
2390 Views

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