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Can you name and describe the four levels of protein structure?

Primary structure - This is the sequence of the amino acids on the polypeptide chain. The amino acids are held together with covalent bonds. When mutations occur, they effect the prima...

Answered by Francine L. • Biology tutor

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What is the difference between Mitosis and Meiosis?

Both meiosis and mitosis are types of nuclear division. The main difference between the two is the number of nuclear divisions that take place:

Answered by Sarah B. • Biology tutor

4844 Views

What is the function of mitochondria?

Mitochondria are the 'powerhouses' of the eukaryotic cell. These organelles are the sites of cellular respiration, the metabolic process that generates energy from carbohydrates in the cell. The energy...

Answered by Sarah B. • Biology tutor

5931 Views

What is evolution and why does it happen?

Evolution is a constant process that allows life forms to adapt to a changing environment.

How does the environment change, though?

Well, there are several sources...

Answered by Mathilda B. • Biology tutor

2898 Views

How is DNA transcribed into mRNA?

The gene to be transcribed s unwound and unzipped using the enzyme DNA helicase which breaks the hydrogen bonds between complementary bases. Activated RNA nucleotides then bind to the exposed complemen...

Answered by Shivali J. • Biology tutor

6166 Views