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State the advantage for a plant of having many different accessory pigments in the photosystem:

This allows for the absorption of a range of different wavelengths of light.

RJ
Answered by Rishitha J. Biology tutor
12779 Views

Outline the role of the Golgi Apparatus:

The Golgi Apparatus modifies proteins by adding molecules onto them for example; glucose to make glycoproteins. These proteins are then re-packaged into Golgi vesicles for transport to other organelles...

RJ
Answered by Rishitha J. Biology tutor
9081 Views

How does the structure of DNA make it an effective carrier of genetic information?

DNA is a very long molecule (one cell contains about 2 metres of DNA!), meaning its coiled structure around proteins called histones allows it to fit into the small space of the nucleus. It also ...

CC
Answered by Charlotte C. Biology tutor
4251 Views

How does acetylcholine transmit the nervous impulse across a synapse?

An action potential from the axon arrives at the presynaptic neuron, stimulating voltage-gated calcium (Ca2+) ion channels to open. This allows calcium ions to diffuse into the synaptic knob, c...

CC
Answered by Charlotte C. Biology tutor
4384 Views

Which molecule has the highest boiling point: methane, ammonia, water or hydrogen fluoride? Explain why.

Answer: water, followed by hydrogen fluroide, ammonia and lowest is methane.

Explanation: First it helps to write the molecular formulae of these molecules and know their shape:

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PW
Answered by Peter W. Chemistry tutor
74725 Views

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