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Biology
A Level

Describe the benedicts test for non reducing sugars

  1. heat with HCl 2) neutralise with NAHCO3 3) add benedicts soln and gently heat in a water bath 4) if the soln changes colour from blue to a brick red precipitate, then non reducing sugars were involv...
SS
Answered by Sagar S. Biology tutor
9161 Views

During the redox reaction in glycolysis, which molecule acts as the oxidising agent?

The oxidation of glyceraldehyde 3-phosphate (G3P), a three-carbon sugar, yields energy. In this oxidation, electrons and H+ are transferred to NAD+, forming NADH, and a phosphate group is attached to the ...

DA
Answered by Daniel A. Biology tutor
7797 Views

Why is internal temperature regulation an important homeostasis?

Internal temperature of your body must be tighly controlled. The key processes of your body are driven by enzymatic activity and there is an optimal temperature at which these operate. If body temperature...

AI
Answered by Archie I. Biology tutor
3843 Views

How do Beta Cells secrete insulin to decrease blood glucose concentration?

Blood glucose enters the beta cells by facilitated diffusion. The increased concentration of glucose in the beta cell causes the rate of respiration to increase therefore produces more ATP. The rise of AT...

LB
Answered by Lauryn B. Biology tutor
2727 Views

A biologist has a small pond containing goldfish in her garden. On a sunny day, more pondweed is at the surface of the water but on a cloudy day, less pondweed is at the surface. Suggest an explanation for this observation

The intensity of light is greater on a sunny day, therefore the rate of photosynthesis in the pondweed is greater during these days. Hence, more oxygen is produced which thereby increases the bouyancy (ma...

JS
Answered by Jay S. Biology tutor
6964 Views

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