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

The central nervous system (CNS) is the main control center of the body, responsible for processing information and coordinating responses. It is primarily composed of two major components: the brain and the spinal cord. These two structures work together to integrate sensory information, generate motor commands, and regulate various bodily functions.

Question 2

The ____ system consists of the liver and kidneys.

Accepted Answer

Excretory

Answer

The excretory system is responsible for filtering waste products from the blood and expelling them from the body. Key organs involved in this vital process include the kidneys, which filter blood to produce urine, and the liver, which processes toxins and produces bile to aid in waste removal. Together, these organs ensure the body's internal environment remains clean and balanced.

Question 3

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

Accepted Answer

Nutrient absorption

Answer

The small intestine is a crucial organ in the digestive system, primarily responsible for the absorption of nutrients from digested food. Its inner surface is highly specialized with villi and microvilli, which significantly increase the surface area available for efficient uptake of carbohydrates, fats, proteins, vitamins, and minerals into the bloodstream. While digestion begins earlier, the vast majority of nutrient absorption occurs here.

Question 4

The tissue that ____ is the placenta.

Accepted Answer

supplies nutrients to a developing embryo

Answer

The placenta is a temporary organ that develops in the uterus during pregnancy, forming a vital connection between the mother and the developing fetus. Its primary function is to facilitate the exchange of essential nutrients, oxygen, and waste products between the maternal and fetal bloodstreams. This ensures the embryo receives everything it needs for healthy growth and development.

Question 5

Describe the zygote.

Accepted Answer

A fertilized ovum

Answer

A zygote is the initial diploid cell formed when two haploid gamete cells, typically an egg (ovum) and a sperm, fuse during the process of fertilization. This single cell contains the complete genetic material from both parents and represents the very first stage of embryonic development. The zygote then undergoes rapid cell division to form an embryo.

BS - Bachelor of Science Practice Test

BS - Bachelor of Science Practice Test

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