In short, because the UV rays damage skin cells, which increases the risk of a mutation possibly leading to skin cancer.
Hope this helps.
Its release when it has a phosphate group removed
Answer:
Restriction enzymes
Explanation:
Restriction enzymes are also called 'molecular scissors' as they cleave DNA at or near specific recognition sequences known as restriction sites. These enzymes make one incision on each of the two strands of DNA and are also called restriction endonucleases.
Explanation:
cells must be attached to a substrate or extracellular matrix of a tissue.
<span>Mucous membranes provide a mechanical barrier at body openings. They also line the respiratory, GI, urinary, and reproductive tracts. Mucous membranes secrete mucus, a slimy substance that traps pathogens. The membranes also have hair-like cilia.</span>