Lactase is an enzyme that is produced in the lining of the intestines. this enzyme the body speed up the breakdown of carbohydrates that are found in dairy products, such as milk, yogurt, and cheese. which general function does lactase perform?
a) fighting disease
b) creating movement
c) regulating cell processes
d) sending chemical messages

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.