TEAS Science Practice Test 2

Question 1

Which of the following best describes the function of the mitochondria in a cell?

Accepted Answer

Cellular energy production through ATP generation

Answer

Mitochondria are the powerhouses of the cell, responsible for producing ATP through cellular respiration (oxidative phosphorylation).

Question 2

A patient's blood test shows a pH of 7.30. Which of the following conditions does this indicate?

Accepted Answer

Acidosis

Answer

Normal blood pH is 7.35-7.45. A pH of 7.30 falls below this range, indicating acidosis (excess acid in the blood).

Question 3

During inhalation, what happens to the diaphragm and thoracic cavity?

Accepted Answer

The diaphragm contracts and flattens while the thoracic cavity expands

Answer

During inhalation, the diaphragm contracts and flattens, increasing the volume of the thoracic cavity and creating negative pressure that draws air into the lungs.

Question 4

Which type of chemical bond involves the sharing of electron pairs between atoms?

Accepted Answer

Covalent bond

Answer

Covalent bonds form when atoms share one or more pairs of electrons, as opposed to ionic bonds where electrons are transferred from one atom to another.

Question 5

The sympathetic nervous system is activated during a 'fight or flight' response. Which of the following is a physiological effect of sympathetic activation?

Accepted Answer

Dilation of pupils and increased heart rate

Answer

Sympathetic activation prepares the body for action by dilating pupils (to improve vision), increasing heart rate (to deliver more blood to muscles), and redirecting blood flow away from digestion.

TEAS Practice Test

TEAS Practice Test

TEAS Science Practice Test 2