25m which of the following best summarizes how hormone levels are controlled? hormones are controlled by a feedback loop; information about a system is sent back to the controller of the system to improve its function. hormones are controlled by oxygen levels; the internal environment maintains all systems, including endocrine functions. hormones are controlled by muscles; hormones are released when muscles contract and stopped when muscles relax. hormones are controlled by the nervous system; the spinal cord sends messages about hormone levels to the brain.

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience.b. report the adverse drug experience to the irb only if there are several other occurrences.c. report the adverse drug experience as part of the continuing review report.d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)