Question 1

Which of the following correctly matches a basic function of sensory pathways with its description?

Accepted Answer

Transmission: The process by which action potentials are sent to the central nervous system.

Question 2

Which type of sensory receptor is primarily responsible for detecting changes in temperature?

Accepted Answer

Thermoreceptors

Question 3

In invertebrates such as insects, how is 'hearing' typically accomplished?

Accepted Answer

By using tympanic membranes that vibrate in response to sound waves.

Question 4

Which of the following best describes the function of the lateral line system in fish?

Accepted Answer

Sensing water movement and vibrations in the surrounding environment.

Question 5

Which sequence correctly describes the path of sound through the human ear?

Accepted Answer

Tympanic membrane → ossicles → cochlea → auditory nerve

Question 6

During the process of hearing, how is the frequency of a sound encoded in the nervous system?

Accepted Answer

By the frequency of action potentials generated in the auditory nerve.

Question 7

Which statement best explains how compound eyes in insects detect movement?

Accepted Answer

Each ommatidium detects a small part of the visual field, allowing rapid detection of movement.

Question 8

Which of the following best describes sensory transduction in the human eye?

Accepted Answer

Light energy is converted into electrical signals by photoreceptors in the retina.

Question 9

A person is unable to distinguish between sweet and bitter tastes. Which sensory receptor type is most likely malfunctioning?

Accepted Answer

Chemoreceptors

Question 10

Which of the following best explains the mechanism of muscle contraction according to the sliding filament model?

Accepted Answer

Actin filaments slide past myosin filaments, shortening the sarcomere.

Question 11

Which equation best represents the relationship between the frequency of action potentials ($$f$$), the intensity of a stimulus ($$I$$), and a proportionality constant ($$k) in $$sensory neurons?

Accepted Answer

$$f = kI$$

Question 12

A patient has damage to the hair cells in the cochlea. Which process is most directly affected?

Accepted Answer

Conversion of mechanical energy into electrical signals.

Question 13

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

Accepted Answer

Calcium release → ATP binding to myosin → Myosin binds to actin → Power stroke

Question 14

Which of the following best describes how olfactory receptors detect odors?

Accepted Answer

By binding specific molecules, triggering action potentials sent to the brain.

Question 15

A fish is able to detect the direction of water flow in a stream. Which sensory system is primarily responsible for this ability?

Accepted Answer

Lateral line system

Question 16

Which of the following is NOT a function of mechanoreceptors?

Accepted Answer

Detecting light intensity

Question 17

Which process is shared by both taste and smell sensory systems?

Accepted Answer

Detection of chemical molecules by chemoreceptors

Question 18

Which of the following best explains why humans can distinguish a wide variety of odors?

Accepted Answer

Each odor molecule activates a unique combination of olfactory receptors.

Question 19

A person is exposed to a loud sound for an extended period. Which of the following is the most likely physiological consequence?

Accepted Answer

Damage to hair cells, leading to reduced ability to generate action potentials.

Question 20

Which of the following best describes the role of ATP in muscle contraction?

Accepted Answer

ATP provides energy for the myosin head to detach from actin and reset for another power stroke.

Study Guide: Sensory Systems and Muscle Contraction in Biology

Study Guide - Practice Questions

Study Guide - Flashcards