TEAS Science Practice Test #4

Question 1

Which of the following describes the flow of oxygenated blood from the heart to the body?

Accepted Answer

systemic circulation

Answer

ventricular circulation

Answer

cellular circulation

Answer

pulmonary circulation

Question 2

In the digestive system of a mammal, nutrient absorption is most likely to happen in which of the following structures?

Accepted Answer

duodenum

Answer

stomach

Answer

cecum

Answer

epiglottis

Question 3

A neuron's action potential travels through its axon in a process known as which of the following?

Accepted Answer

saltatory conduction

Answer

chemical conduction

Answer

repolarization

Answer

electrical conduction

Question 4

When it comes to the human respiratory system, which of the following best describes the process of inhalation?

Accepted Answer

the diaphragm contracts and lowers, making the air pressure in the lungs decrease.

Answer

the diaphragm relaxes and lifts, making the air pressure in the lungs increase.

Answer

the diaphragm relaxes and lowers, making the air pressure in the lungs decrease.

Answer

the diaphragm contracts and lifts, making the air pressure in the lungs decrease.

Question 5

Which is the correct order of things that happen during an inflammatory response?

I. Phagocytes are attracted to the damaged area.

II. Blood vessels become permeable.

III. Damaged cells release histamine.

IV. The formation of pus occurs.

Accepted Answer

III, II, I, IV

Answer

I, III, II, IV

Answer

II, I, III, IV

Answer

IV, I, III, II

Question 6

The decline in newborn mortality rates in developed countries is attributed to which of the following?

Accepted Answer

the education opportunities provided to woman.

Answer

the decrease in domestic violence toward pregnant women.

Answer

the increase in health care costs.

Answer

the marital status of the mother.

Question 7

Choose the scenario that most effectively exemplifies carrying capacity.

Accepted Answer

A population of deer increases exponentially, but then decreases due to starvation, then increases slightly again.

Answer

A population of mosquito decreases because of a lack of water available following a drought-stricken summer.

Answer

A population of rabbits increases from 4 rabbits to 25 rabbits to 100 rabbits in three months.

Answer

A population of roaches decreases due to exposure to an insecticide resulting in the extermination of roaches in an area.

Question 8

Which is more likely to happen after a population near an open body of water experiences both immigration and emigration?

Accepted Answer

the population will increase if the rate of immigration is greater than the rate of emigration.

Answer

the population will increase if the rate of immigration is less than the rate of emigration.

Answer

the population will decrease if the rate of immigration is greater than the rate of emigration.

Answer

the population will remain the same if the rate of immigration is equal to the birth rate.

Question 9

Which of the following is most likely taking place in populations that are supposedly in a zero-growth phase?

Accepted Answer

the death and emigration rates equal the birth and immigration rates.

Answer

the death rate equals the emigration rate.

Answer

the infant mortality rate equals the emigration rate.

Answer

the birth rate equals the immigration rate.

Question 10

What will happen if the aorta isn't working properly?

Accepted Answer

oxygenated blood would not be transported to the body’s cells.

Answer

oxygenated blood would not be transported to the heart’s atria.

Answer

deoxygenated blood would not be transported to the heart.

Answer

deoxygenated blood would not be transported to the lungs.