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Biology
IB

What evidence is there for evolution?

For IB Biology, there are three types of evidence for evolution you need to know: fossils, selective breeding and homologous structures.

Fossils are preserved remains or traces of organisms from th...

Answered by Emma F. Biology tutor
9396 Views

How can different phenotypes be generated without changes to the genotype?

Different phenotypes can be generated without changes to the genotype through a process called Epigenetics. Epigenetics, meaning “above genes”, is the study of changes to the phenotype caused by changes i...

Answered by Ana D. Biology tutor
11871 Views

What is the difference between mitosis and meiosis?

Mitosis contains 1 division cycle, meiosis - 2. Independent assortment, synapsis and crossing over occur only in meiosis. The outcome of mitosis is 2 diploid cells, meiosis - 4 haploid cells. Mitosis prod...

Answered by Neringa K. Biology tutor
2284 Views

Muscle contraction is a chemical process involving proteins. Explain how skeletal muscle contracts.

The best way to approach these type of questions (worth 8 marks) is to explain everything step by step. This will make it much easier for you to explain under stressful exam situations as well as for the ...

Answered by Hilary L. Biology tutor
6703 Views

Which protein structure is broken down due to denaturalization: primary, secondary, tertiary or quaternary?

Denaturalization breaks down all the structures but the primary one. Remember that the primary one is made up of the aminoacids. If we break the peptide bond between aminoacids we're changing the protein,...

Answered by Blanca G. Biology tutor
2262 Views

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