Question

A researcher did an experiment in which he had one group of people drink a liter of coffee in an hour and a control group of people drink a liter of water within the same amount of time. He then measured their urine output over the course of the next two hours. Both groups produced an average of 250 ml of urine per hour over that time period. He concluded that the coffee itself had no effect on urine output. Given his results, what else should he measure to identify the effects of coffee drinking?

Answer 1

@thomaster @dan815 @aaronq @Ashleyisakitty @iGreen @Callisto @Loser66 @coolman500

Answer 2

He should also measure the concentration of caffeine in the coffee that the test subjects drink to find a correlation between urine output and caffeine.
He should also measure the size of the kidneys to see if any water not excreted as urine by his test subjects is being stored by the kidneys.
He should also measure the amount of water vapor exhaled by the test subjects to capture any water lost through the lungs.
He should also measure the amount of sweat and water in bowel movements produced by the test subjects to see if coffee contributes to water loss through other excretory channels.

Answer 3

@sleepyhead314 @k_lynn @sleepyjess @Jamierox4ev3r @pooja195

Answer 4

i will medal and fan just pleaseee helppp @sleepyhead314 @k_lynn @sleepyjess @Jamierox4ev3r @pooja195 @thomaster @dan815 @aaronq @Ashleyisakitty @iGreen @Callisto @Loser66 @coolman500

Answer 5

he should measure the ratio of ammonia to water in the urine because it may not affect the urine output but it will affect the amount of water and ammonia in the urine. coffee dehydrates you and causes your body to store more water so you loose less water and get rid of more solutes (ammonia). therefore the group that drank water were actually getting more water than the ones who drank coffee so they didn't need to store as much or get rid of as much solute (ammonia) :)

Answer 6

i dont get it :/

Answer 7

coffee has more solutes in it and less water so the body needs to make room to store more water so it dispels ammonia to make room. drinking water doesn't require the body to get rid of as much solutes the make room for the water because there are no solutes entering the body. the less solutes that enter the body the less it gets rid of. and when drinking strait water your body does not need all of it so it gets rid of some, causing their to be a higher water to ammonia ratio

Answer 8

so the answers C

Answer 9

what does c say

Answer 10

He should also measure the amount of water vapor exhaled by the test subjects to capture any water lost through the lungs.

Answer 11

it is a

Answer 12

are u sure

Answer 13

no it is b
this time i am sure

Answer 14

1000%

Answer 15

do you mind helping on 2 more please

Answer 16

i have to change classes. srry

Answer 17

oh okay ..

Answer 18

thanks tho