Question

20. Which of the following statements about hypothesis testing is FALSE?

Select one:
a. A valid hypothesis should be testable and falsifiable.
b. Experiments should be designed to test whether an hypothesis can be rejected.
c. Experiments rely on variables and controls to test hypotheses.
d. Each variable being tested should have at least one control.
e. A control group should have as many distinct features as possible compared to the test group.
f. If an hypothesis is inconsistent with experimental data, it should be rejected.

13. Where are nonpolar amino acids of a protein more likely to be found? Check all that apply.

Answer options:

Select one or more:
a. on the surface of soluble proteins
b. in the interior of soluble proteins
c. on the surface of cell membrane
d. embedded in cell membrane

The following skeletal formula represent D-leucine (top) and L-leucine (bottom). Which type of isomers are these two molecules?

Select one:
a. structural isomers
b. they are not isomers
c. enantiomers
d. geometric isomers

Answer 1

False statement about hypothesis testing is that the control group should have as many distinct features as possible compared to the test group. Because control group is identical to the test groups but differ only in one variable

The non-polar amino acids are found in the interior of the surface proteins, most probably in the centr of that protein.

The following skeletal formula represent D-leucine (top) and L-leucine (bottom).

Both of them are the sterioisomers or most commonly the enantiomers. They differ only in the spatial arrangement of the molecules.