A2 Psychology - Biological Rhythms - answering questions

When answering question on biological rhythms such as the role of endogenous pacemakers/ exogenous zeitbers do you need to refer to examples such as the control of circadian rhythms and could you be asked to refer it to infradian or ultradian rhythms for this type of question? Vice versa, when answering a question on circadian/ ultradian/ infradian rhythms do you also need to refer to the role of endogenous pacemakers/ exogenous zeitgbers in the answer?

Hope you understand what i'm saying, i know my question is a bit all over the place, but i really struggle when it comes to answering question like these on biological rhythms.

I would really appreciate any help pretty please!