$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{energy}$$

$$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\mathrm{O}_2 \rightarrow 6\mathrm{CO}_2 + 6\mathrm{H}_2\mathrm{O} + \text{energy}$$

Question 1

Which of the following best describes the principle of negative feedback in homeostasis?

Accepted Answer

A process in which a change in a variable triggers mechanisms that reverse the change and restore the variable to its set point.

Question 2

Which of the following is NOT a function of the plasma membrane?

Accepted Answer

Synthesizing proteins for the cell.

Question 3

A patient is experiencing muscle weakness due to low sodium levels. Which cellular transport mechanism is most likely affected?

Accepted Answer

Active transport

Question 4

Which equation correctly represents the breakdown of ATP during muscle contraction?

Accepted Answer

$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{energy}$$

Question 5

Which tissue type is characterized by cells that are tightly packed together and function in protection, secretion, and absorption?

Accepted Answer

Epithelial tissue

Question 6

A person suffers a burn that damages both the epidermis and the dermis. Which skin function is most likely compromised?

Accepted Answer

Regulation of body temperature

Question 7

Which of the following best describes the pathway of sound waves from the auricle to the organ of Corti?

Accepted Answer

Auricle → external auditory canal → tympanic membrane → ossicles → oval window → cochlear duct → organ of Corti

Question 8

Which of the following is a function of the sympathetic division of the autonomic nervous system?

Accepted Answer

Dilating pupils

Question 9

Which joint movement occurs when you move your arm away from the midline of your body?

Accepted Answer

Abduction

Question 10

A patient has a deficiency in parathyroid hormone. Which effect would most likely be observed?

Accepted Answer

Decreased blood calcium levels

Question 11

Which of the following best describes the function of the Golgi apparatus?

Accepted Answer

Modifies, sorts, and packages proteins for secretion

Question 12

Which equation represents the process of cellular respiration?

Accepted Answer

$$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\mathrm{O}_2 ightarrow 6\mathrm{CO}_2 + 6\mathrm{H}_2\mathrm{O} + 	ext{energy}$$

Question 13

Which of the following is a characteristic of connective tissue?

Accepted Answer

Contains abundant extracellular matrix.

Question 14

Which of the following best explains why oxygen diffuses from alveoli into pulmonary capillaries?

Accepted Answer

Oxygen concentration is higher in the alveoli than in the capillaries.

Question 15

Which of the following is the correct sequence for the reflex arc?

Accepted Answer

Receptor → sensory neuron → interneuron → motor neuron → effector

Question 16

A patient is unable to flex their forearm at the elbow. Which muscle is most likely impaired?

Accepted Answer

Biceps brachii

Question 17

Which of the following best describes the function of myelin in the nervous system?

Accepted Answer

It insulates axons and increases the speed of nerve impulse conduction.

Question 18

Which of the following is a function of the skeletal system?

Accepted Answer

Storage of minerals such as calcium and phosphorus

Question 19

Which of the following best describes the process of synaptic transmission?

Accepted Answer

Neurotransmitters are released from the presynaptic neuron and bind to receptors on the postsynaptic neuron.

Anatomy & Physiology: Unit Behavioral Objectives Study Guide

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