There is a valve at the meeting point between each ureter and the bladder prevents the back flow of urine from the urinary bladder to the kidney
The answer is A. When a potent drug is discovered, it has to undergo animal and human trials to test it ADMET (Absorption, Distribution Metabolism, Excretion, and Toxicity) properties. Using tissue cultures to test drugs, such as cancer drugs, prevents the incidence of subjecting humans to the unknown adverse effects of the drugs before the drugs are determined to be safe for use.
Answer: difficult
Explanation:
The options to the question are:
difficult.
dispositional.
emotional.
elementary.
Following the information in the question regarding the difficulty in the biology lab that Warner wants to compete, if he doesn't complete, then he'll likely conform to others in this setting because the task seems difficult.
