Top answers

Biology
A Level

How to do a genetic cross to work out the offspring phenotype probabilites?

Construct a punnet square, putting the gametes of one parent in the first vertical column and the other parent in the first horizontal column. Next carry out the cross by combining the gametes in the squa...

GR
Answered by Georgia R. Biology tutor
4941 Views

How does DNA replication take place?

DNA replication takes place in a semi-conservative manner, where each of the DNA strands serves as a template for the formation of a new strand. This ensures genetic continuity between generations, as gen...

DN
Answered by Dominika N. Biology tutor
11524 Views

What's the difference between a eukaryotic cell and a prokaryotic cell?

Eukaryotes have a plasma membrane, nucleus, nuclear membrane, nucleolus, smooth endoplasmic reticulum, rough endoplasmic reticulum, ribosomes, mitochondria, lysosomes, peroxisomes.

Prokaryotes do n...

ED
Answered by Elena D. Biology tutor
4673 Views

How does the heart pump blood around the body?

The easiest way to think of the human heart is as 2 separate pumps in one loop. The first pump is the right side of the heart, which receives deoxygenated blood from the systemic circulation (the body). T...

AS
Answered by Alice S. Biology tutor
10351 Views

Why does Maltase only catalyse Maltose?

Enzymes are proteins with specific tertiary structures. Part of this structure forms an active site. Only the substrate of an enzyme, in this case Maltose, fits/ binds to the active site. This forms an en...

GS
Answered by Georgia S. Biology tutor
19211 Views

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