Organophosphate insecticides such as malathion are widely used to control the mosquito population. Malathion is a cholinesterase inhibitor, and it attaches to the active site on cholinesterase. This results in continuous stimulation of the insects' muscles, leading to death and effectively eradicating the pest population. In the diagram above, acetylcholine and malathion are numbered, respectively, Select one: a. 3 and 7 b. 4 and 7 c. 7 and 3 d. 7 and 4

Phosphodiesterase is an enzyme responsible for activating CAMP True False

QUESTION 46 Use the Information below to answer the question. Compound A B C Binds to receptor Yes Yes No Elicits a response Yes No No Compound X is the natural ligand that binds to a receptor and stimulates a signal transduction pathway associated with the receptor. Based on the information given in the table, what are the roles of compounds A, B, and C? O a. A is an antagonist, B is an agonist, and C is a ligand. O b. A is an agonist, B is an antagonist, and C has no role. O c. A is a ligand, B has no role, and C is an antagonist. O d. A is an agonist, B is an antagonist, and C is an agonist. Oe. A has no role, B is an agonist, and C is an antagonist.

Long-term methamphetamine use leads to changes in the brain. Think about how methamphetamine changed where dopamine was found in the cell. What are some changes that you might expect based on this simulation?

In response to epinephrine for the "fight or flight" response, there is INCREASED activity of PEP carboxykinase in the liver. What is the function of PEP carboxykinase? Enter your answer here Why is it beneficial to increase the activity of PEP carboxykinase in the liver in response to epinephrine for the "fight or flight" response? Enter your answer here

An athlete tested positive for Methylhexaneamine in urine with a level of 0.90 µg/mL. At her appeal in the Court of Arbitration, she quotes a highly respected scientific publication that states that at levels of 1.0 µg/mL there is no performance enhancement. If the athlete’s levels are indeed below this threshold, the athlete can face a year’s suspension instead of a ban for life. Use the Estimate of Uncertainty to determine if the Athlete should be given a 1 year suspension or banned for life.

Insulin is a hormone that regulates the concentration of glucose in the circulatory system by activating signal transduction pathways that increase the intake of blood into cells. Individuals with type 1 diabetes are unable to produce insulin, and are therefore unable to effectively regulate their blood-glucose concentration. Which of the following best explains how a medication that triggers the addition of insulin receptors on cells will affect the intake of the insulin signaling pathway in individuals with type 1 diabetes? A B с D The medication will effectively activate the signaling pathway because insulin levels will return to normal. The medication will effectively activate the signaling pathway because the addition of in- sulin receptors will increase insulin synthesis. The medication will have no effect on the signaling pathway because the receptors will not be activated in the absence of insulin. The medication will have little or no effect on the signaling pathway because…