HiSET Science: Life Science Practice Test 3

Question 1

During which phase of mitosis do chromosomes line up along the cell's equator?

Accepted Answer

Metaphase

Answer

During metaphase, chromosomes align at the metaphase plate (cell equator), allowing spindle fibers to attach and separate them equally.

Question 2

A patient has a blocked lymphatic vessel. Which body function would most likely be impaired?

Accepted Answer

Removal of excess fluid from tissues

Answer

The lymphatic system drains excess interstitial fluid from tissues; a blockage causes fluid buildup called lymphedema.

Question 3

Which of the following is an example of a mutualistic relationship?

Accepted Answer

Clownfish living among sea anemone tentacles for mutual benefit

Answer

Clownfish and sea anemones benefit each other — the fish is protected by the anemone, and it keeps the anemone clean.

Question 4

In which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Answer

DNA replication occurs during the S (synthesis) phase of interphase, before the cell begins mitosis.

Question 5

What adaptation allows desert cacti to minimize water loss?

Accepted Answer

Thick waxy cuticle and modified leaves (spines)

Answer

Cacti have a thick waxy cuticle and spines instead of leaves to dramatically reduce water loss through transpiration.

HiSET - High School Equivalency Test Practice Test