Elbow - hinge joint is the <span>pairs shows the correct combination of bones and types of joints present in them.
</span>In primates, including humans, the elbow joint is the synovialhinge joint<span> between
the humerus in the upper arm and the radius and ulna in the forearm
which allows the hand to be moved towards and away from the body.</span>
Animal cell because animal cells have no walls
<h2>
Nucleus - control center</h2>
The nucleus is called the control center of the cell because:
- The genetic material which is the essence of life is hosted in the nucleus – the DNA-which presents the code of life or information or instructions regarding:
- The structure and function of each cell and the organ it is present,
- Numerous activities of life like reproduction, metabolism, growth, development, etc.
- The nucleus replicates the genetic information and passes to the new daughter cells, generation after generation to continue the life processes.
- The nucleus DNA transcribes the code or information for protein synthesis to the RNA to synthesize proteins in the body which carry out many essential functions in the form of structural proteins, antibodies, hormones, pigments, etc.
- The nucleus DNA synthesizes enzymes which carry out functions like metabolism.
Some guy from the 20th century
