Q: Which of the following equations correctly represents the process of cellular respiration?

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

Question 1

Which of the following best describes the principle of complementarity of structure and function in human anatomy?

Accepted Answer

The structure of a body part is directly related to its function, and changes in structure can affect how it works.

Question 2

A patient is experiencing dehydration. Which chemical reaction is primarily responsible for breaking down glycogen into glucose to provide energy?

Accepted Answer

Hydrolysis

Question 3

Which of the following best explains why red blood cells placed in a hypotonic solution swell and may burst?

Accepted Answer

Osmosis causes water to move into the cell where solute concentration is higher.

Question 4

Which of the following is a correct comparison between DNA and RNA?

Accepted Answer

DNA is double-stranded and stores genetic information; RNA is single-stranded and involved in protein synthesis.

Question 5

A patient has a burn that affects both the epidermis and the entire dermis, resulting in loss of sensation and a leathery appearance. What degree of burn is this?

Accepted Answer

Third-degree burn

Question 6

Which of the following equations correctly represents the process of cellular respiration?

Accepted Answer

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

Question 7

Which of the following best describes the role of calcium ions ($$\mathrm{Ca}^{2+}) in $$muscle contraction?

Accepted Answer

They bind to troponin, causing tropomyosin to move and expose binding sites on actin.

Question 8

A patient has a spinal cord injury that results in loss of motor function on the right side of the body and loss of pain and temperature sensation on the left side. Which neural pathway is most likely affected?

Accepted Answer

Contralateral spinothalamic tract

Question 9

Which of the following best explains the difference between graded potentials and action potentials in neurons?

Accepted Answer

Graded potentials decrease in strength as they spread, while action potentials maintain their strength over distance.

Question 10

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

Accepted Answer

Stimulates digestion and conserves energy

Question 11

Which of the following best describes the process of bone growth in length at the epiphyseal plate?

Accepted Answer

Endochondral ossification, where cartilage is replaced by bone at the growth plate

Question 12

A patient is unable to distinguish between salty and sweet tastes. Which cranial nerve is most likely affected?

Accepted Answer

Facial nerve (VII)

Question 13

Which of the following best describes the function of the sodium-potassium pump ($$\mathrm{Na}^+/\mathrm{K}^+$$ ATPase) in maintaining the resting membrane potential?

Accepted Answer

It actively transports 3 sodium ions out of the cell and 2 potassium ions into the cell, using ATP.

Question 14

Which of the following is a correct sequence of events in the sliding filament model of muscle contraction?

Accepted Answer

ATP binds to myosin, myosin detaches from actin, myosin hydrolyzes ATP, myosin binds to actin, power stroke occurs.

Question 15

Which of the following best explains why the cornea is transparent and allows light to pass through?

Accepted Answer

Its collagen fibers are precisely arranged and it lacks blood vessels.

Question 16

A patient presents with difficulty in voluntary muscle movement and loss of fine motor control. Which area of the brain is most likely affected?

Accepted Answer

Cerebellum

Question 17

Which of the following best describes the function of the sarcoplasmic reticulum in skeletal muscle cells?

Accepted Answer

It stores and releases calcium ions necessary for muscle contraction.

Question 18

Which of the following is a correct description of the function of astrocytes in the central nervous system?

Accepted Answer

They maintain the blood-brain barrier and regulate the extracellular environment.

Question 19

Which of the following best describes the process of auditory transduction in the cochlea?

Accepted Answer

Vibrations of the basilar membrane cause hair cells to bend, generating electrical signals.

Question 20

Which of the following best explains the difference between EPSPs and IPSPs in neuronal communication?

Accepted Answer

EPSPs depolarize the postsynaptic membrane, increasing the likelihood of an action potential; IPSPs hyperpolarize the membrane, decreasing the likelihood.

Anatomy & Physiology I: Comprehensive Study Guide (Chapters 1–15)

Study Guide - Practice Questions

Study Guide - Flashcards