BIO 100 EXAM 3 QUESTIONS WITH VERIFIED ANSWERS

BIO 100 EXAM 3 QUESTIONS WITH VERIFIED ANSWERS **Homeostasis refers to an organism's ability to** maintain a stable internal environment. **Lizards regulate their body temperature** by basking in the sun for warmth, rather than relying on internal heat. This demonstrates ectothermy. **In response to a sudden drop in environmental temperature, an endothermic animal will likely** constrict blood vessels to preserve heat within its core. **Which of the following is most likely to regulate lowering your blood sugar levels after they exceed normal?** A homeostatic mechanism based on negative feedback. **Identify the type of tissue that is not included in the following options:** Embryonic **To which category of tissue does adipose tissue belong?** Connective **Which type of tissue is characterized by excitability and the transmission of electrochemical signals within the body?** Nervous **Striated, cylindrical cells with multiple nuclei are features of which type of tissue?** skeletal muscle only **The nerve impulse travels along which structure away from the cell body?** axon **Which of these processes specifically occurs in the mouth?** All of the above (Ingestion, Mechanical digestion, Chemical digestion) **Which organ is not considered part of the accessory digestive structures?** Mouth **Which organ has the greatest surface area for nutrient absorption?** Small intestine **A person lacking an epiglottis would likely have difficulty** swallowing food without risking choking. **Compared to human cells, how many bacterial and archaeal cells typically inhabit our bodies?** 10-100 times as many Which of the following statements is not true? Essential nutrients can be synthesized by the body. In the genetic disorder phenylketonuria (PKU), a single reaction is blocked in a normal metabolic pathway sequence, and the amino acid phenylalanine cannot be converted to the next chemical step. Phenylalanine, an essential amino acid, builds up in the body and high levels affect the nervous system that lead to mental retardation. What would be a logical treatment for this disorder? Eat less foods high in phenylalanine. Which of the following characteristics is typical of individuals with Types 1 Diabetes? Are unable to produce insulin. What are the ideal average percent body fat ranges for males and females? Females, 19-26 and males, 13- 18 percent body fat The respiratory system _______. provides body tissues with oxygen