HESI A2
HESI A2 Version 1 Biology Questions
Question 1 of 5
Which disease is caused by a bacterium?
Correct Answer: B
Rationale: Strep throat is caused by the bacterium Streptococcus pyogenes. Unlike mumps, which is a viral infection, AIDS caused by the HIV virus, and the common cold usually caused by rhinoviruses, strep throat is specifically a bacterial infection that can be treated with antibiotics.
Question 2 of 5
Which is an example of the correct organizational hierarchy for a wolf?
Correct Answer: B
Rationale: The correct organizational hierarchy in biology follows a specific order from smallest to largest. It starts with DNA (genetic material), followed by blood cells (basic units of life), then muscle tissue (a collection of cells), followed by the heart (an organ), then the circulatory system (a system of organs), and finally the whole organism, the wolf. Therefore, the correct sequence for the organizational hierarchy for a wolf is DNA, blood cell, muscle tissue, heart, circulatory system, and wolf.
Question 3 of 5
What is the purpose of cellular respiration?
Correct Answer: D
Rationale: The correct answer is D. The primary purpose of cellular respiration is to obtain energy in the form of ATP. During cellular respiration, glucose and other organic molecules are broken down to release energy in the form of ATP, which is crucial for various cellular functions and activities. This energy is used by cells to carry out processes such as growth, repair, movement, and maintaining homeostasis.
Question 4 of 5
Which cellular appendage enables cells to move through their environments?
Correct Answer: A
Rationale: "Flagellum" is a whip-like appendage that allows certain cells to move through their environment.
Question 5 of 5
Human cells need oxygen for respiration. What system of the body is responsible for transporting an oxygen molecule to different locations throughout the body?
Correct Answer: C
Rationale: The circulatory system is responsible for transporting oxygen throughout the body. It consists of the heart, blood vessels, and blood, which work together to deliver oxygen from the lungs to cells and tissues, facilitating cellular respiration. The skeletal system provides structural support and protection for the body but is not involved in oxygen transport. The lymphatic system helps maintain fluid balance and immune function, not oxygen transport. The respiratory system is responsible for gas exchange in the lungs but relies on the circulatory system to transport oxygen to cells and tissues.