Question 1

Which of the following best describes the difference between ionic and covalent bonds in biological molecules?

Accepted Answer

Ionic bonds involve the transfer of electrons from one atom to another, resulting in charged ions, while covalent bonds involve the sharing of electrons between atoms.

Question 2

A patient presents with abnormally high blood glucose levels. Which hormone is most likely deficient, and what is its primary function?

Accepted Answer

Insulin; it lowers blood glucose by facilitating cellular uptake of glucose.

Question 3

Which of the following best explains why the parathyroid gland is essential for bone health?

Accepted Answer

It secretes parathyroid hormone (PTH), which increases blood calcium by stimulating bone resorption.

Question 4

Which of the following is a property of slow twitch muscle fibers?

Accepted Answer

They contain more mitochondria and are adapted for endurance activities.

Question 5

A person touches a hot stove and immediately withdraws their hand. Which part of the nervous system is primarily responsible for this rapid response?

Accepted Answer

Somatic nervous system

Question 6

Which of the following best describes the function of the hypothalamic-hypophyseal portal system?

Accepted Answer

It allows hormones from the hypothalamus to reach the anterior pituitary directly, regulating pituitary hormone secretion.

Question 7

Which of the following is a characteristic of specialized connective tissues?

Accepted Answer

They include bone, cartilage, and blood, each with unique extracellular matrices.

Question 8

Which equation correctly represents the relationship between charge, sub-atomic particles, and atomic number?

Accepted Answer

$$Q = p - e$$

Question 9

A patient has a deficiency in protein keratin. Which of the following symptoms would most likely be observed?

Accepted Answer

Fragile skin and hair due to loss of structural integrity.

Question 10

Which of the following best describes the role of the medulla oblongata in the nervous system?

Accepted Answer

It regulates vital autonomic functions such as heart rate and respiration.

Question 11

Which of the following is true regarding the process of ossification?

Accepted Answer

It is the process by which cartilage is converted into bone.

Question 12

Which of the following best explains the function of troponin in muscle contraction?

Accepted Answer

Troponin binds to calcium ions, allowing actin and myosin interaction for contraction.

Question 13

Which of the following is a function of the posterior or dorsal region of the spinal cord?

Accepted Answer

Reception and transmission of sensory information.

Question 14

Which of the following best describes the role of fibrocartilage in the body?

Accepted Answer

It resists compression and provides support in intervertebral discs.

Question 15

Which of the following is a correct description of homeostasis?

Accepted Answer

The process by which the body maintains a stable internal environment despite external changes.

Question 16

Which of the following organ systems is primarily responsible for transporting nutrients, gases, and wastes throughout the body?

Accepted Answer

Circulatory system

Question 17

Which of the following best explains the function of perichondrium?

Accepted Answer

It is a layer of connective tissue that surrounds cartilage, providing nutrients and support for growth and repair.

Question 18

Which of the following is a function of protein elements in the integumentary system?

Accepted Answer

They provide structural strength and waterproofing to skin and hair.

Question 19

Which of the following best describes the action of antagonistic muscles such as gastrocnemius and soleus?

Accepted Answer

They produce opposite movements at a joint, allowing for controlled motion.

Question 20

Which of the following best describes the cellular organelle used to recycle materials within a cell?

Accepted Answer

Lysosome

BIO 207 Anatomy & Physiology Final Exam Study Guide

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