TEAS Science Practice Test #2 2

Question 1

What is the primary function of red blood cells (erythrocytes)?

Accepted Answer

Transport oxygen and carbon dioxide

Answer

Red blood cells contain hemoglobin, which binds to oxygen in the lungs and transports it to tissues throughout the body. They also carry carbon dioxide back to the lungs for exhalation.

Question 2

Which part of the neuron transmits electrical impulses away from the cell body?

Accepted Answer

Axon

Answer

The axon is the long projection of a neuron that carries electrical impulses (action potentials) away from the cell body toward other neurons, muscles, or glands. Dendrites receive signals toward the cell body.

Question 3

In chemistry, what is a "solution"?

Accepted Answer

A homogeneous mixture in which a solute is dissolved in a solvent

Answer

A solution is a homogeneous mixture where a solute (the dissolved substance) is uniformly distributed in a solvent (the dissolving medium). Saline solution (salt dissolved in water) is a common medical example.

Question 4

Which organ system is primarily responsible for regulating body temperature, water balance, and waste elimination through sweat?

Accepted Answer

Integumentary system

Answer

The integumentary system (skin, hair, nails, sweat glands, and sebaceous glands) regulates body temperature through sweat production and evaporation, and eliminates small amounts of waste through perspiration.

Question 5

What happens during the process of cellular respiration?

Accepted Answer

Glucose is broken down to produce ATP (energy)

Answer

Cellular respiration is the process by which cells break down glucose (and other fuel molecules) in the presence of oxygen to produce ATP (adenosine triphosphate), the primary energy currency of the cell. CO₂ and water are byproducts.

TEAS Practice Test

TEAS Practice Test

TEAS Science Practice Test #2 2