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Biology
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How do negative and positive feedback loops occur and how are they different?

Think of them as a flow chart.

Stimulus (a change)
    |
Sensor (detects the change)
    |
Control (sends a signal about t...

EC
Answered by Emma C. Biology tutor
7767 Views

Describe the process of protein synthesis.

A copy of the gene to be coded in DNA is made from messenger RNA (mRNA). mRNA travels out of the nucleus and attaches to a ribosome. The ribosome joins amino acids together in the order determined by mRNA...

AT
Answered by Arjun T. Biology tutor
7579 Views

How to write an essay on: The importance of proteins in the control of processes and responses in organisms.

Explain the use of proteins as enzymatic catalyats - including examples.

Enyzmes control metabolic pathways - such as in the Krebs cycle.

Proteins/enzymes in photosynthesis - with examples.<...

EB
Answered by Eva B. Biology tutor
36466 Views

Describe the process of extracellular digestion

Extracellular digestion is a process in which an organism feeds by secreting enzymes through its cell membrane and on to the food. These enzymes then catalyse the breakdown and the digestion of the food. ...

SN
Answered by Stuart N. Biology tutor
8858 Views

how does aveoli allow for a more efficient gas exchange in mammals?

avoli are small chambers that branvh off from the bronchioles in the lungs, and is where gas exchange directly occurs. these have quite an ireegular shape and contain many fold in its structure, this allo...

CS
Answered by Cristina S. Biology tutor
3845 Views

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