HESI A2
HESI A2 Version 1 Biology Questions
Question 1 of 5
If the zygomatic arch is broken, where is the fracture located?
Correct Answer: A
Rationale: The zygomatic arch, also known as the cheekbone, is a bony structure on the side of the face. A fracture in this area is classified as a facial fracture, making the correct location for the fracture in the face.
Question 2 of 5
The cellular membrane consists of a bilayer of which substances?
Correct Answer: B
Rationale: The cellular membrane is primarily composed of a phospholipid bilayer, forming the structure that regulates entry and exit.
Question 3 of 5
Which term means a group of similar cells combined to perform a common function?
Correct Answer: A
Rationale: The correct answer is 'Tissue.' Tissue is a group of similar cells that work collectively to carry out a specific function. These specialized cells combine to form tissues, which further combine to create organs. Organs then collaborate within systems in the body to maintain balance (homeostasis) and perform various functions such as digestion, circulation, and respiration.
Question 4 of 5
In the presence of which molecule does aerobic respiration occur?
Correct Answer: A
Rationale: Aerobic respiration is a process that requires oxygen to efficiently convert glucose into carbon dioxide, water, and ATP. Oxygen plays a critical role in this metabolic pathway by acting as the final electron acceptor in the electron transport chain, allowing the production of ATP through oxidative phosphorylation. Therefore, oxygen is the essential molecule for aerobic respiration to take place.
Question 5 of 5
Where is the slide placed on a light microscope?
Correct Answer: A
Rationale: In a light microscope, the slide is placed on the stage, which is a flat platform designed to hold the specimen being observed. The stage provides stability for the slide and allows for adjustments to focus the lens on the specimen. The arm, lens, and base have specific functions in the operation of the microscope but are not where the slide is placed.