Which is an example of the body maintaining homeostasis using a positive feedback loop?
a. glucose rises > glucagon is released > insulin is released > blood glucose lowers
b. blood glucose lowers > insulin is released > glucagon is released > glucose rises
c. glucose rises > glucagon is released > blood glucose lowers > insulin is released
d. blood glucose lowers > glucagon is released > glucose rises > insulin is release

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above

Lifestyle diseases are caused by a combination of

Explain why methicillin resistant staphlococcus aureus (mrsa) is more prevalent now than it was only 30 years ago. a. antibiotics cause mutations in staphlococcus aureus that lead to an increase in the number of methicillin-resistant strains. b. methicillin resistance causes an infection to spread more rapidly.c. frequent and inappropriate use of methicillin-type antibiotics has provided selective pressure that has resulted in an increase in the proportion of methicillin-resistant strains of staphlococcus aureus.d. diseases like aids have made people more vulnerable to infections from staphlococcus aureus.