Which of the following statement is true? a. The active site is only a small part of the total enzyme volume.
b. The active site of an enzyme is the region of an enzyme where substrate molecules bind and undergo a chemical reaction.
c. According to Kosland's induced fit theory, the active site is inflexible and cannot change shape during the catalytic process.
d. An active site can catalyze a reaction repeatedly as the amino acid residues involved in the catalytic process are not altered at the end of the enzymatic reaction.
e. When an enzyme's substrate binds the active site, water usually exists the site for catalysis to occur.

The tasmanian devil, a marsupial carnivore, is facing extinction due to devil facial tumor disease (dftd) which causes bulging cancerous lumps and lesions to erupt around the face and neck — often causing enough deformation to make seeing or eating difficult. dftd has evolved into a contagious cancer, a trait that is unique among cancers. devil mating behavior involves biting around the head and neck, allowing cells from one individual — especially cells from the crumbly dftd tumors — to be transferred to the wounds or face of a new individual. this marsupial was once found across australia, but sea levels rose, isolating the tasmanian population, while the australian population went extinct. what would be an outcome of genetic isolation that is likely to have impacted the spread of dftd? a) reduced territory puts diseased individuals in greater contact with non-diseased ones. b) inbreeding results in less variation in facial features so the cancer is generally fatal. c) genetic isolation has made it difficult for scientists to develop a vaccine against dftd. d) the lack of genetic variation in the immune system of tasmanian devils minimizes resistance to the disease.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Building glycogen from glucose molecules is an example of what