Melanin protects against the harmful effects of sunlight, and people with red hair are usually fair skinned and particularly susceptible to skin cancer.

TLS Online TPP Program

#Id: 8829

#Unit 6. System Physiology – Plant

When PSII receives more light than PSI, plastoquinone becomes predominantly reduced, resulting in activation of the LHCII kinase. The kinase phosphorylates LHCII, resulting in migration of LHCII away from the granal region where it can associate with PSI, thereby adjusting the relative excitation of PSII and PSI.

TLS Online TPP Program

#Id: 9587

#Unit 11. Evolution and Behavior

Neogene- Increasingly cool, dry climate; grasslands spread; modern families of mammals and birds; first apes

TLS Online TPP Program

#Id: 3040

#Unit 3. Fundamental Processes

DNA ligase makes the bond that connects the 3 ' end of one Okazaki fragment to the 5 ' beginning of the next fragment.

TLS Online TPP Program

#Id: 10003

#Unit 4. Cell Communication and Cell Signaling

Mice homozygous for a null allele of dhh exhibit defective spermatogenesis

TLS Online TPP Program

#Id: 9304

#Unit 4. Cell Communication and Cell Signaling

In the absence of light,  bound 11-cis-retinal locks the rhodopsin into its inactive (R) conformation