Question 1

What type of stimulus is necessary for hearing and touch?

Accepted Answer

Hearing and touch are both stimulated by mechanical forces. Hearing involves the mechanical vibrations of sound waves on the eardrums, while touch involves physical contact or pressure on the skin.

Question 2

Specific odors are detected and transmitted to the olfactory bulb by ____________________.

Accepted Answer

individual neurons

Question 3

Which ions signal a sour taste as they pass through ion channels?

Accepted Answer

Hydrogen ions (H+) are responsible for the sour taste sensation. When acidic substances dissolve in water, they release hydrogen ions, which then pass through specific ion channels in taste bud cells, signaling the brain to perceive the taste as sour.

Question 4

Mutant mice lacking the VR1 receptor are less responsive to the taste of capsaicin and can endure noxious levels of _______________.

Accepted Answer

The answer of Mutant mice lacking the VR1 receptor are...

Question 5

The sense of vision is due to the absorption of light by _________________cells in the eye.

Accepted Answer

The answer of The sense of vision is due to...

Question 6

Odor and some taste sensations are dependent on the stimulus of specific 7TM receptors causing triggering of _________________ stimulation.

Accepted Answer

The answer of Odor and some taste sensations are dependent...

Question 7

What ion stimulates guanylate cyclase?

Accepted Answer

Calcium ions stimulate guanylate cyclase, which is an enzyme involved in the synthesis of cyclic guanosine monophosphate (cGMP) from guanosine triphosphate (GTP).

Question 8

Salty tastes are detected through _________________.

Accepted Answer

The answer of Salty tastes are detected through _________________....

Question 9

_________________ are structural motifs found in many proteins, and they consist of a hairpin loop followed by a helix-turn-helix.

Accepted Answer

The answer of _________________ are structural motifs found in many...

Question 10

In terms of sequence structure, OR family proteins are 20% identical to the ________________.

Accepted Answer

The answer of In terms of sequence structure, OR family...

Question 11

Capsaicin is a chemical found in _______________.

Accepted Answer

The answer of Capsaicin is a chemical found in _______________....

Question 12

Rhodopsin, the photoreceptor molecule in rods, consists of the protein ______________ linked to 11-cis retinal.

Accepted Answer

The answer of Rhodopsin, the photoreceptor molecule in rods, consists...

Question 13

What type of receptor detects pain?

Accepted Answer

Nociceptors are specialized sensory receptors responsible for detecting pain or potentially harmful stimuli, signaling the central nervous system to the presence of damage or threat in the body's environment.

Question 14

What visual pigment is found in rods?

Accepted Answer

Rhodopsin is the visual pigment found in the rod cells of the retina, which are responsible for vision in low light conditions.

Question 15

Which of the following is a tastant category?

Accepted Answer

Umami is recognized as one of the five basic taste categories, alongside sweet, sour, bitter, and salty. It is often described as a savory or meaty taste and is a key component in many foods, particularly those containing glutamate.

Question 16

The daily rhythms of activity and restfulness are known as _____ rhythms.

Accepted Answer

Circadian rhythms are the natural, internal processes that regulate the sleep-wake cycle and repeat roughly every 24 hours, governing the daily rhythms of activity and restfulness.

Question 17

The _________________ family of receptors is involved in odor and some taste sensations.

Accepted Answer

The answer of The _________________ family of receptors is involved...

Question 18

What condition is characterized by the inability to smell certain compounds?

Accepted Answer

Specific anosmia refers to the inability to perceive the smell of one or a few specific compounds, while still retaining the ability to smell other odors.

Question 19

Which G-protein subunit is expressed in taste buds?

Accepted Answer

Gustducin is a G-protein subunit specifically expressed in taste buds and is involved in the transduction of taste signals.

Question 20

Which of the following animals has the most highly developed color perception?

Accepted Answer

The answer of Which of the following animals has the...

Quiz 33: Sensory Systems