A scientist was interested in knowing how the amount of sleep a student gets the night before an exam affects the score that a student gets on the exam. He divided his subjects (students) into 3 groups. Group A took the exam after sleeping 6 hours. Group B took the test after sleeping 8 hours (normal amount). Group C took the test after sleeping 10 hours. He then looked at the test scores to see if there was any difference between the 3 groups. What is the independent variable in this experiment?

Explain light independent reactions

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

What goes in and out of a cell respiration?