Ques: Answer the following question given this paragraph: Even though they are very strong, bones can fracture , or break. Fractures can happen at different places on a bone. They are usually caused by excess bending stress on the bone. Bending stress is what causes a pencil to break if you bend it too far. Q: What usually causes fractures on a bone? Choices: - compressive stress - shear stress - extra weight - excessive bending stress A:
Ans: excessive bending stress

Ques: Answer the following question given this paragraph: The amount of material left over after a certain number of half-lives can be easily calculated. Q: What term is used to describe a chemical released by an animal that affects the behavior or physiology of animals of the same species? Choices: - enzyme - isolate - amino - pheromone A:
Ans: pheromone

Ques: Answer the following question given this paragraph: Connections of Proteins to Glucose Metabolism Proteins are broken down by a variety of enzymes in cells. Most of the time, amino acids are recycled into new proteins. If there are excess amino acids, however, or if the body is in a state of famine, some amino acids will be shunted into pathways of glucose catabolism. Each amino acid must have its amino group removed prior to entry into these pathways. The amino group is converted into ammonia. In mammals, the liver synthesizes urea from two ammonia molecules and a carbon dioxide molecule. Thus, urea is the principal waste product in mammals from the nitrogen originating in amino acids, and it leaves the body in urine. Q: Amino acids broken down by metabolic process are mostly recycled into new what? Choices: - lipids - hormones - enzymes - proteins A:
Ans: proteins

Ques: Answer the following question given this paragraph: Nonmetals are elements that do not conduct electricity. They are the second largest class of elements. Nonmetals are also poor conductors of heat. The majority of nonmetals are gases. Solid nonmetals are dull and brittle. Q: Elements that do not need to conduct electricity are known as what? Choices: - alloys - carbonates - silicates - nonmetals A:
Ans:
nonmetals