Answer:
taking the pretest
Explanation:
A one-group pretest–posttest design is a type of research design generally used in behavioral research aimed at estimating the treatment effects on the sample. In this experimental design, the target group of participants is first pre-tested on the dependent variable and, subsequently, post-tested after the administration of a treatment. In consequence, the participants of the target group receive the same treatment and assessment. The problem of testing effects indicates that testing may become a problem when the pretest may change participant's behavior. When there are statistically significant differences between the pretest and posttest data, it is possible to support the working hypothesis.
Answer:
The correct answer will be-hypothalamus
Explanation:
A tumor is the group of abnormal cells formed due to uncontrolled division of the cells. When it is present in the brain is known as a brain tumor.
When tumor is formed in the brain, it presses the part of the brain physically and thus disrupts the functioning of that part of the brain.
In the given question, since the patient experiences the disturbing hunger and thirst which is controlled by the hypothalamus of the brain therefore the tumor would have formed in the hypothalamus.
Thus, -hypothalamus is the correct answer.
In a controlled experiment, the control group is compared with an experimental group.
Explanation:
A set of variables or data is considered as the control group that remains fixed or constant in its normal usual state; while all the other variables or data are identical with this control group, except one independent variable at a time. This is to observe the changes when that one variable is allowed for variations at a time.
This independent variable which undergoes changes is in the experiment group while the remaining constant group is the control group. The dependent variable changes with changes in the independent variable.
By comparing the control group against the experimental group, uncertainty in results are avoided.
Answer:
Free running rhythms
Explanation:
Free running or Circadian rhythms are independent rhythms
that strive when the organism environment is unprovided with necesaary time cues such as constant light by switching on or off the genes that influence the molecular structure of biological clocks.
The macromolecule must be starch.
Explanation:
Starch is a polymer of Glucose joined by glycosydic bond.
Starch is the main energy storage substance in green plants.
Starches react with iodine and give a bluish black or black color and thus iodine test is considered as a confirmatory test for starches.
In this experiment ,the solution turns very dark black on addition of iodine so we can be sure that the solution contained starch.
