GED Science Life Science 4

Question 1

A child inherits one allele for brown eyes (dominant) and one allele for blue eyes (recessive). The child's eye color will most likely be:

Accepted Answer

Brown

Answer

Because brown eye color is dominant, having even one dominant allele results in brown eyes being expressed.

Question 2

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

Accepted Answer

Clownfish living among sea anemone tentacles for protection while cleaning the anemone

Answer

Clownfish and sea anemones both benefit — the fish gets shelter and the anemone gets cleaned — making this mutualism.

Question 3

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

Accepted Answer

Metaphase

Answer

During metaphase, chromosomes align at the cell's midline (metaphase plate) before being pulled apart.

Question 4

Which of the following correctly describes the flow of energy in a food chain?

Accepted Answer

Sun → Producers → Consumers → Decomposers

Answer

Energy flows from the sun to producers via photosynthesis, then to primary consumers, secondary consumers, and finally to decomposers.

Question 5

A red blood cell is placed in a very salty (hypertonic) solution. What will happen to the cell?

Accepted Answer

It will shrink as water leaves by osmosis

Answer

In a hypertonic solution, water moves out of the cell by osmosis toward the higher solute concentration outside, causing the cell to shrink.

GED Practice Test