Q: Which chemical reaction is most likely to occur during the breakdown of glucose for energy in human cells?

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

Question 1

Which of the following best describes the concept of homeostasis in human physiology?

Accepted Answer

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

Question 2

A patient presents with a dangerously low blood calcium level. Which organ system is primarily responsible for restoring calcium homeostasis?

Accepted Answer

Endocrine system

Question 3

Which of the following is a negative feedback mechanism?

Accepted Answer

Sweating to cool the body when overheated

Question 4

Which chemical reaction is most likely to occur during the breakdown of glucose for energy in human cells?

Accepted Answer

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

Question 5

Which of the following best explains the difference between water-soluble and lipid-soluble hormones?

Accepted Answer

Water-soluble hormones bind to receptors on the cell membrane, while lipid-soluble hormones pass through the membrane and bind to intracellular receptors.

Question 6

A nerve impulse travels from the brain to a muscle, causing contraction. Which type of cell is responsible for transmitting this impulse?

Accepted Answer

Neuron

Question 7

Which tissue type is primarily responsible for lining body cavities and forming glands?

Accepted Answer

Epithelial tissue

Question 8

A patient suffers a spinal cord injury that impairs voluntary movement but leaves sensation intact. Which part of the nervous system is most likely damaged?

Accepted Answer

Somatic motor neurons

Question 9

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

Accepted Answer

Osteoblasts build new bone matrix by secreting collagen and minerals.

Question 10

Which equation correctly represents the relationship between pH and hydrogen ion concentration $[H^+]$?

Accepted Answer

$pH = -\log_{10}[H^+]$

Question 11

Which of the following is NOT a function of the integumentary system?

Accepted Answer

Production of red blood cells

Question 12

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

Accepted Answer

Nervous system

Question 13

Which of the following best describes the sliding filament model of muscle contraction?

Accepted Answer

Actin and myosin filaments slide past each other, shortening the sarcomere.

Question 14

Which of the following structures is part of the appendicular skeleton?

Accepted Answer

Femur

Question 15

Which of the following best explains the function of synapses in the nervous system?

Accepted Answer

Synapses allow communication between neurons by transmitting chemical or electrical signals.

Question 16

A patient has a deficiency in acetylcholine production. Which physiological process is most likely impaired?

Accepted Answer

Muscle contraction

Question 17

Which of the following is a correct statement about neural integration?

Accepted Answer

Neural integration involves processing and interpreting sensory input to produce appropriate motor output.

Question 18

Which of the following best describes the function of the endocrine system?

Accepted Answer

Regulates body activities by releasing hormones into the bloodstream.

Question 19

Which of the following is a correct comparison between the nervous and endocrine systems?

Accepted Answer

The nervous system acts quickly and locally, while the endocrine system acts slowly and systemically.

Question 20

A patient is unable to maintain balance and coordination. Which special sense organ is most likely affected?

Accepted Answer

Inner ear (vestibular apparatus)

BIOH 201 NL - Human Anatomy and Physiology I: Syllabus and Study Guide

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