Science Practice Test Flashcards
6 cards from real TEAS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Science Practice Test flashcards as text
Which of the following best describes the function of the mitochondria in a cell?
Answer: Cellular energy production through ATP generation
Mitochondria are the powerhouses of the cell, responsible for producing ATP through cellular respiration (oxidative phosphorylation).
A patient's blood test shows a pH of 7.30. Which of the following conditions does this indicate?
Answer: Acidosis
Normal blood pH is 7.35-7.45. A pH of 7.30 falls below this range, indicating acidosis (excess acid in the blood).
During inhalation, what happens to the diaphragm and thoracic cavity?
Answer: The diaphragm contracts and flattens while the thoracic cavity expands
During inhalation, the diaphragm contracts and flattens, increasing the volume of the thoracic cavity and creating negative pressure that draws air into the lungs.
Which type of chemical bond involves the sharing of electron pairs between atoms?
Answer: Covalent bond
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.
The sympathetic nervous system is activated during a 'fight or flight' response. Which of the following is a physiological effect of sympathetic activation?
Answer: Dilation of pupils and increased heart rate
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.
In an experiment, a scientist tests whether a new fertilizer increases tomato plant growth. The plants given fertilizer are the experimental group. What is the control group?
Answer: Plants grown under identical conditions but without the fertilizer
The control group must be identical to the experimental group in every way except for the independent variable (fertilizer), so it consists of plants grown under the same conditions without fertilizer.