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Explain how hydrogen bonding occurs between molecules of water.

Hydrogen Bonding occurs between 2 adjacent molecules of H₂O.

The polar covalent bond between oxygen and hydrogen creates negative and positive partial charges respectively.

There ...

Answered by Tom H. • Biology tutor

16512 Views

Give 3 differences between DNA and RNA

RNA is single stranded whereas DNA is double stranded

RNA has uracil whereas DNA has thymine

RNA contain the pentose sugar ribose whereas DNA has deoxyribose

Answered by Oliver H. • Biology tutor

5542 Views

How does glycolysis produce ATP?

Glycolysis produces energy through the form of ATP. ATP is created directly from glycolysis through the process of substrate-level phosphorylation (SLP) and indirectly by oxidative phosporylation (OP). Th...

Answered by Charlie H. • Biology tutor

31304 Views

Why do different blood vessels have different lumen sizes (relative to their overall size)?

Lumen sizes in blood vessels differ due to the differing functions of the vessels themselves.

Arteries have to carry oxygenated blood away from the heart to the tissues at high pressure. Small lume...

Answered by Jessica S. • Biology tutor

72705 Views

How is a nerve impulse transmitted along a synapse?

The nerve impulse arrives at the synapse. This triggers vesicles to release chemical messengers (neurotransmitters) into the synapse. These chemicals diffuse across the synapse and bind with membrane rece...

Answered by Alex H. • Biology tutor

2960 Views