Biology Notes for IGCSE 2014 & 2024

 (0654) Coordinated Sciences 2023/2024 Subheadings and key concepts covered anatomy of the male reproductive system: prostrate glands, sp...

Reproduction is the biological process by which new " offspring " individual organisms are produced from their " parents...

Gonorrhoea bacteria, Credit: Science photo library Gonorrhoea   is caused by bacteria that can be   passed   from one person t...

AIDS (Acquired Immune Deficiency Syndrome) is a disease caused by the HIV.   HIV can not live outside the human body. It is an e...

This has been a tough question for many years: Which is better -  breast milk  or  fomula milk?  While breast milk is nutritious, it has ...

An artificial insemination procedure uses a thin, flexible tube (catheter) to put sperm into the woman's reproductive tract (...

There are 4 main groups of birth control methods: natural , chemical , mechanical and   surgical.  

Credit: revision world Sex hormones  (testosterone in boys and oestrogen in girls) are responsible for the development of   secondary...

Birth begins when the strong muscles in the wall of the uterus start to contract . This first stage of birth (called  labour ) is trigg...

Ante-natal (before birth) care is a routine care for the healthy pregnant woman.

Credit: thomasreynoldsblog The blastula develops into an embryo and some of the cells form a placenta , linking the embryo with the...

After sexual intercourse, sperms swim through the cervix and the uterus into the oviducts, where they meet an egg. One sperm may fe...

The menstrual cycle in women is a recurring process in which the lining of the uterus is prepared for pregnancy, and if pregnancy does...

Reproduction in humans is when the male gamete ( sperm ) fuses together with the female gamete ( ovum/egg ). At first, it is just on...