Cell, Skin and Specialized Tissue - DNA

HideShow resource information

DNA (deoxyribonucleic acid), the genetic material from which the chromosomes in a cell's nucleus are formed, governs protein synthesis and inheritance. DNA instructs chemical compounds to synthesize the proteins that control specific cell functions. Protein synthesis starts when the coils of DNA temporarily unwind at specific points. 

Chromosomes - The nucleus of a human cell contains 46 chromosomes; each is a long, coiled, molecule of DNA, and together they contain about 100,000 genes. Every gene is a tiny segment of DNA that controls a particular cell function by governing the synthesis (manufacture) of a specific protein.

Double helix - when the thread-like chromosome is unravelled, DNA structure is seen to be two intertwined strands: a double helix. Each strand is composed of four types…


No comments have yet been made

Similar Biology resources:

See all Biology resources »