Koch's postulates are the established rules for determining that a specific pathogen causes a specific disease.
a. true
b. false

Discuss the functions of epithelial connective nerviud and muscular tissues

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.

What are the three groups of atoms that make up amino acids called