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Explain the cardiac cycle

  • basic anatomy of the heart: chambers, valves, structural difference between right and left side of the heart
  • pulmonary vs. systemic circulation
  • blood flow through the h...
UT
Answered by Umamah T. Biology tutor
2767 Views

Use your knowledge of natural selection to suggest how the peacock's tail has evolved.

Mutation Competition Females are attracted to the tail Reproduce with males with an extravagant tail Offspring pass on the characteristic of an extravagant ...

NF
Answered by Nathan F. Biology tutor
7598 Views

Describe the differences between mitosis and meiosis and when would these occur in mammalian cells?

Both mitosis and meiosis use cytokinesis for the division of genetic informaton between cells, however mitosis creates identical copies known as daughter cells after just one round of cell division, where...

AD
Answered by Aimee D. Biology tutor
2885 Views

How should I tackle an unseen poem during the exam?

First, it is always a good idea to read through the poem twice so you have an idea of what the poem is about. Once you've completed this, pick out at least one theme you think runs really strongly through...

MK
4085 Views

How can I draw a 30 degree angle without a protractor?

In the exam you will have a ruler and a pair of compasses, which you can use to construct a 60 degree angle by drawing two arcs. You can then draw two more arcs to bisect that 60 degree angle and make a 3...

ZC
Answered by Zoe C. Maths tutor
22086 Views

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