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Name the first stage of mitosis, and describe what happens at this stage

The first stage of mitosis is ProphaseAt prophase...The already duplicated DNA within the nucleus condenses (coils up) to form sister chromatids, connected by a centromereThe nucleolus and nuclear envelop...

Answered by Lara Q. • Biology tutor

2107 Views

What are the similarities and differences between competitive and non-competitive inhibition within enzymes?

Competitive inhibition occurs when the substrate and inhibitor molecule are similar in shape and size and therefor compete to bind in the enzymes active site, non-competitive inhibition however is when th...

Answered by Stella W. • Biology tutor

6483 Views

Explain the process of evolution?

Evolution occurs via a process called natural selection,Natural selection (termed survival of the fittest by Darwin) is where organisms that are better adapted to an environment survive and reproduce. The...

Answered by Stella W. • Biology tutor

2474 Views

Maltose is hydrolysed by the enzyme maltase. Explain why maltase catalyses only this reaction (3 marks)

The question is three marks, so should have three points.1) Active site of the enzyme has a specific shape/ tertiary structure/ complementary to maltose2) Only maltose can bind...

Answered by Amy W. • Biology tutor

2514 Views

Explain the similarities and differences between plant and animal cells structure and shape (may include use of a diagram and bullet points are accepted).

The similarities are:Cell cytoplasmNucleusCell membraneMitochondriaRibosomesStructures unique to plant cells (with a few exceptions):ChloroplastsCell wallsLarge permanent vacuoleAnimal cells tend to be va...

Answered by Jessica L. • Biology tutor

3621 Views