MCAT Style Quiz Question 8.3

Phenylketonuria (1) / Albinism (2) is characterized by white skin due to a defect in the enzyme tyrosinase, which leads to a block in the pathway needed to synthesize adrenaline (3) / melanin (4).  Animals with this condition have an increased risk of skin cancer (5) / mental illness (6). The genetic disease albinism (7)Continue reading “MCAT Style Quiz Question 8.3”

MCAT Style Quiz Question 9.2

Biological membranes partition aqueous environments to permit life processes to maintain regions of low entropy within the high entropy state of the surrounding environment. What key chemical characteristic do the major biomolecules in membranes have that allows for the formation of hydrophobic barriers separating aqueous environments?