Question 1

Which of the following terms describes as a frozen mass of gas and dust with a definite orbit through the

solar system?

Options :

A : A moon

B : A comet

C : An asteroid

D : A meteorite

E : A nebula

Answer: B

Question 2

If an electron jumps from higher energy shell of energy E2 to lower energy shell E1, what will be the

wavelength of the photon emitted during the process?

Options :

A :

h (c/E1 − E2)

B : h (c/E1 × E2)

C : h (c/E1+ E2)

D : h (c/E2)

E : h (c/E2 − E1)

Answer: A

Question 3

If you are dealt 5 cards in a game of draw poker, and 3 of them are 5's what is the probability you will get

another 5 if you draw 2 cards?

Options :

A : 2/47

B : 2/49

C : 1/6

D : 2/13

Answer: A

Question 4

In an aquatic environment, oxygen concentration depends on chemical and physical factors and is greatly

affected by many biological processes. These is much less dissolved oxygen (DO) in aquatic environments

than in dry air. In most aquatic environments, there are only 5 to 10 mL of dissolved oxygen in a liter of

water. Chemical and physical factors, such as salinity, pH, and especially temperature, can affect the DO

concentration and distribution. An experiment was done to study the effect of different salinity levels on DO

in water of varying temperatures. The results are below. Salinity is expressed in parts per thousand (ppt)

and is the content of dissolved salt in water.

CLEP-Science-and-Mathematics-page205-image13

The results of the experiment suggest that at salinities of greater than 30 ppt, it is likely that

Options :

A : dissolved oxygen levels would increase

B : water temperature would increase

C :

aquatic organisms would begin to die

D : there would be no change in dissolved oxygen

E :

the amount of dissolved oxygen would decrease

Answer: A

Question 5

Two subunits built from proteins and rRNA.

Options :

A : Chloroplast

B : Mitochondria

C : Nucleus

D : Ribosome

E : Endoplasmic reticulum

Answer: D