Q1. Spontaneous depurination of DNA occurs at the rate of about 3 X 10-9 depurinations per purine per minute, most of which are repaired. The genome size of a diploid human cell is approximately 6 X 109 base pairs. Around how many spontaneous depurinations must be repaired per day in […]

We did a lab experiment where we compared the amount of protein in apoptotic and normal cells. Im trying to write my discussion but don’t know if we would expect to find more protein in the apoptotic cells or the normal cells. I have asked this question to my professor […]

The condition “xeroderma pigmentosum” is characterized by high rates of skin cancers like malignant melanoma. It is caused by mutations in any of several genes that encode enzymes that participate in:     scanning DNA for aberrant structures such as bulges resulting from thymine dimers.     strand-invasion during homologous […]

Most biological energy here on Earth can be traced back to one single source: the sun. Plants and blue-green algae use photosynthesis to trap the electromagnetic wave energy generated by the sun, transforming it into chemical energy in the form of food for themselves and for other creatures that eat […]