Free Bachelor of Science: Intro to Life Sciences Questions and Answers

Question 1

What components of the following central nervous system are they?

Accepted Answer

Brain and spinal cord

Answer

Brain and kidneys

Answer

Spinal cord and kidneys

Answer

Spinal cord and muscles

Question 2

The ____ system consists of the liver and kidneys.

Accepted Answer

Excretory

Answer

Muscular

Answer

Vascular

Answer

Skeletal

Question 3

The digestive system includes the small intestines. The location of ____ is here.

Accepted Answer

Nutrient absorption

Answer

Production of toxins

Answer

Toxin exchange

Answer

Oxygen exchange

Question 4

The tissue that ____ is the placenta.

Accepted Answer

supplies nutrients to a developing embryo

Answer

fertilizes the egg

Answer

produces female gametes

Answer

produces male gametes

Question 5

Describe the zygote.

Accepted Answer

A fertilized ovum

Answer

An immature sperm cell

Answer

An immature ovum

Answer

The place where female gametes are produced

Question 6

Which of the following methods of natural selection makes use of the claim that newborns with medium weights often fare better than those who are especially little or large?

Accepted Answer

Stabilizing selection.

Answer

Median selection.

Answer

Disruptive selection.

Answer

Typical selection.

Question 7

Which of the following examples of natural selection is NOT one?

Accepted Answer

Heterozygote selection

Answer

Disruptive selection.

Answer

Directional selection.

Answer

Stabilizing selection