An organism that a parasite lives in or on is a A. prey
B. host
C. consumer
D. prey

Can someone me with questions 12 and 13 plz.

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3

Correct relationship between molecular formula and empirical formula