Question 1

Which of the following best describes the function of the organelle labeled 'A' in the first image (cell diagram)?

Accepted Answer

It is responsible for producing ATP through cellular respiration.

Question 2

In the second image (skin diagram), which structure is primarily responsible for thermoregulation through sweat production?

Accepted Answer

Structure 8

Question 3

Which part of the neuron in the third image is responsible for receiving incoming signals from other neurons?

Accepted Answer

The dendrites

Question 4

In the fourth image (brain diagram), which structure is responsible for coordinating voluntary muscle movements and maintaining posture and balance?

Accepted Answer

The cerebellum

Question 5

Referencing the fifth image (spinal nerves), damage to which region would most likely result in loss of leg muscle function?

Accepted Answer

Lumbar nerves

Question 6

Which cranial nerve, as shown in the sixth image, is responsible for transmitting visual information from the retina to the brain?

Accepted Answer

Optic nerve (II)

Question 7

Which of the following best describes the movement of water across a semipermeable membrane from an area of low solute concentration to high solute concentration?

Accepted Answer

Osmosis

Question 8

Which of the following is the correct complementary DNA sequence for the strand: $$5'	ext{-ATGCCGTA-}3'$$?

Accepted Answer

$$3'	ext{-TACGGCAT-}5'$$

Question 9

A patient has a mutation in the gene coding for the sodium-potassium pump. Which of the following would most likely be affected?

Accepted Answer

Maintenance of the resting membrane potential

Question 10

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

Accepted Answer

They bind to troponin, causing a conformational change that exposes binding sites on actin.

Question 11

Which of the following is a function of the Golgi apparatus (labeled 'D' in the first image)?

Accepted Answer

Modifying, sorting, and packaging proteins for secretion

Question 12

Which of the following best describes the anatomical position?

Accepted Answer

Standing upright, facing forward, arms at the sides with palms facing forward

Question 13

Which of the following best describes the function of the structure labeled '6' in the second image (skin diagram)?

Accepted Answer

It is a hair follicle responsible for producing hair.

Question 14

Which of the following best describes the function of the myelin sheath (yellow structures in the third image)?

Accepted Answer

It increases the speed of action potential conduction along the axon.

Question 15

Which of the following is a property of water that makes it essential for life?

Accepted Answer

It has a high heat capacity, allowing it to buffer temperature changes.

Question 16

Which of the following best describes the function of osteons in bone tissue?

Accepted Answer

They provide structural support and house blood vessels and nerves.

Question 17

Which of the following best describes the movement at a hinge joint?

Accepted Answer

Flexion and extension

Question 18

Which of the following is a cation?

Accepted Answer

$$\mathrm{Na^+}$$

Question 19

During which phase of mitosis do the chromosomes align along the center of the cell?

Accepted Answer

Metaphase

Question 20

Which of the following best describes the function of the plasma membrane?

Accepted Answer

It regulates the movement of substances into and out of the cell.

BIO163 Exam 1 Study Guide: Human Anatomy & Physiology Chapters 1-7

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