– Human female reproductive system – Human male reproductive system – Structure of DNA – Neuron – Human heart – Nephron – PCR setup – Plasmid vector – Flower structure – Ecosystem diagram – Food chain and food web – Transcription/Translation diagram
It is defined as a hollow, muscular organ having four chambers. It is derived from mesodermal tissue. The size of the human heart is about the size of a clenched fist. The heart is one of the most powerful and labour-intensive muscles in the human body that continues to beat throughout a person's lifetime.
Plasmids are small, circular DNA molecules present outside the main chromosome. They are called extra-chromosomal because they exist separately from the organism’s genome. Despite not being essential for survival, they often provide helpful traits to the host. Plasmids are transferred between bacteria through various modes of horizontal transfer. This makes them important in sharing traits like antibiotic resistance.