TEAS Science Practice Test #3 3

Question 1

What is the primary function of the large intestine?

Accepted Answer

To absorb water and electrolytes, forming solid waste

Answer

The large intestine (colon) primarily absorbs water and electrolytes from indigestible food matter, transforming liquid waste into solid feces for elimination. Most nutrient absorption occurs in the small intestine.

Question 2

Which of the following describes a dominant allele?

Accepted Answer

An allele that is always expressed when present, even with only one copy

Answer

A dominant allele is one that is expressed in the phenotype whenever it is present — whether in one copy (heterozygous) or two copies (homozygous dominant). A recessive allele is only expressed when two copies are present.

Question 3

Which of the following correctly describes the role of enzymes?

Accepted Answer

Enzymes are biological catalysts that speed up chemical reactions without being consumed

Answer

Enzymes are proteins that act as biological catalysts — they lower the activation energy needed for a chemical reaction to occur and are not consumed in the process, so they can be used repeatedly.

Question 4

What is the function of the trachea?

Accepted Answer

To conduct air from the larynx to the bronchi

Answer

The trachea (windpipe) is a cartilaginous tube that conducts inhaled air from the larynx (voice box) downward to the bronchi, which then branch into the lungs. It is lined with cilia and mucus to help filter debris.

Question 5

Which of the following is an example of a chemical property?

Accepted Answer

Flammability

Answer

A chemical property describes a substance's ability to undergo a chemical change or reaction. Flammability (tendency to burn) is a chemical property. Density, melting point, and color are physical properties that can be observed without changing the chemical composition.

TEAS Practice Test

TEAS Practice Test

TEAS Science Practice Test #3 3