Top answers


Sexual Reproduction: How does a sperm and egg form a baby?

Once a month, following ripening, a single egg is released from a woman's ovaries during the menstrual cycle, with the hope of fertilisation. During the act of sexual reproduction, the father's sperm is depo...
PV
Answered by Phoebe V. Biology tutor
17014 Views

What is the difference between the humoral and cell-mediated immune repsonses?

The humoral repsonse removes the pathogenic microorganisms which don't enter the cells and requires antibodies produced by B lymphocyctes. Different B lymphocyte cells produce different antibodies, each of w...
LC
Answered by Lily C. Biology tutor
39941 Views

How is benzene nitrated?

The nitration of benzene is an example of an electrophilic substitution reaction - where one of the hydrogens (or other group attached to the benzene ring) is removed and replaced by another group. There are...
LC
Answered by Lily C. Chemistry tutor
7130 Views

Is sociology a science? Key perspectives

There are two key perspectives within the 'Is sociology a science?' debate. The first is the top down approach of Positivism which would say yes to the above question. Positivism believes that it is possible...
AD
Answered by Alice D. Sociology tutor
9681 Views

What is meant by the 'symmetrical family' and what are the reasons for its rise?

There has been a growing trend that moves away from the separated conjugal roles of the within the family towards the symmetrical family, which basically means more similar roles exist. These include women n...
AD
Answered by Alice D. Sociology tutor
52393 Views