Top answers

What is the difference between covalent compounds and ionic compounds?

Covalent compounds contain atoms that share electrons - for example, hydrogen chloride (HCl) share electrons (one from each atom), in order to achieve a full set of 8 electrons in their outer shell. Covalent...
BS
Answered by Beth S. • Chemistry tutor
9324 Views

What are the products of digestion of a) proteins, b) fats and c) carbohydrates?

a) Proteins, which are highly-folded poplypeptides, are broken down into shorter polypeptides, and then into amino acids, by protease enzymes. b) Fats, or lipids, are broken down by enzymes such as lipase in...
BS
Answered by Beth S. • Biology tutor
32692 Views

What is the function of enzymes and give an example of one.

Enzymes are biological catalysts - they 'speed up' biological reactions - essentially increasing the rate at which they occur. Pepsin is an enzyme that catalyses the digestion of proteins in the stomach into...
BS
Answered by Beth S. • Biology tutor
8100 Views

Describe the structure and function of a chemical synapse.

A synapse acts as a junction between cells - either between neurons, or between a neuron and a muscle or gland cell. Although neurons transmit information via electrical signals, synapses transmit informatio...
BS
Answered by Beth S. • Biology tutor
26366 Views

What different forms of RNA are found in a cell and what are their functions?

Messenger RNA, or mRNA , is used to carry or contain the information that DNA contains. DNA is too large to be carried out of the nucleus, so mRNA is used to transport the necessary information to the riboso...
BS
Answered by Beth S. • Biology tutor
4072 Views