Receptors are typically specialized to react to specific stimulation by initiating a chemical or biochemical (in the case of biochemistry) change. In the field of pharmacology or biochemistry, receptors are usually a protein molecules and the change it undergoes are usually specific to the type of stimuli or signal it is responding to.
Answer;
-Variety
Ethan is not achieving the variety principle
Explanation;
-Eating a variety of foods and choosing the appropriate number of servings from the food guide pyramid is something that many people do not do.
-No two food items provide the exact same nutrients and this is why it is important to eat an assortment of foods. This means that some food items are better sources for nutrients than other items and vise versa.
-Balance and moderation are also important aspects of daily intake of food. Balance compares with variety because of the importance of eating a balanced diet from the Food Pyramid. Also balance is associated with caloric intake/expenditure.When equality is found between food intake (calories taken in to the body) and physical exercise (caloric expenditure) a maintaining of body weight occurs.
Moderation involves controlling or regulation of food intake.
A) nucleus
Stores genetic information
B) cytoskeleton
Provides support
C) cytoplasm
Regulates transport
D) Golgi apparatus
Processes proteins
E) lysosome
Breakdown and recycle
F) flagellum
Movement
G) mitochondria
Energy harvest
Protest can be found during the early 1900s, like Picasso's Guernica .