Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 34, Problem 9TY
Which is true?
- A loss of taste buds would reduce a person’s sense of smell.
- Olfactory sensory receptors have a limited lifetime and can’t be replaced.
- Chemoreception only occurs in terrestrial animals.
- The relative size of the olfactory bulbs is a good predictor of a mammal’s ability to sense odors.
- There are a very small number of types of odor receptor proteins in animals.
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Fill in the blank:
A chemical would be considered _______________________ if a person lacks a particular receptor site on the cilia of the olfactory neurons.
what statement is true about Olfactory epithelium and bulb
a. Olfactory neurons in the olfactory epithelium are bipolar neurons. Their distal ends are enlarged as olfactory vesicles, which have long cilia.
b. The cilia have receptors that respond to dissolved substances. There are approximately 1000 different odorant receptors.
c. The receptors activate a G protein complex, which opens ion channels.
d. At least 7 (perhaps 50) primary odors exist. The olfactory neurons have a very low threshold and accommodate rapidly.
Which is true?
The oval and round windows are parts of the ear lobe
The hair cells are in the middle ear
The outer ear directs sound and amplifies it at some frequencies.
The neuro-feedback mechanism in the middle air protects hearing to some extent from loud sound
Chapter 34 Solutions
Principles of Biology
Ch. 34.1 - Prob. 1BCCh. 34.1 - Prob. 1TYKCh. 34.2 - Prob. 1BCCh. 34.2 - Prob. 2BCCh. 34.2 - Prob. 1CCCh. 34.2 - Prob. 1TYKCh. 34.2 - Prob. 2TYKCh. 34.3 - Prob. 1CCCh. 34.3 - Prob. 1TYKCh. 34.4 - Prob. 1CC
Ch. 34.4 - Prob. 2CCCh. 34.4 - Prob. 1TYKCh. 34.4 - Prob. 2TYKCh. 34.5 - Prob. 1CCCh. 34.5 - Prob. 1TYKCh. 34.5 - Prob. 2TYKCh. 34.6 - Prob. 1TYKCh. 34.6 - Prob. 2TYKCh. 34 - Prob. 1TYCh. 34 - Prob. 2TYCh. 34 - The sensory receptors for audition (hearing) are...Ch. 34 - In an experiment to test the function of...Ch. 34 - Prob. 5TYCh. 34 - Prob. 6TYCh. 34 - Prob. 7TYCh. 34 - Prob. 8TYCh. 34 - Which is true? A loss of taste buds would reduce a...Ch. 34 - Prob. 10TYCh. 34 - Prob. 1CCQCh. 34 - Prob. 2CCQCh. 34 - Prob. 3CCQCh. 34 - Prob. 1CBQCh. 34 - Prob. 2CBQ
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- what statement is false about Olfactory epithelium and bulb a. Olfactory neurons in the olfactory epithelium are bipolar neurons. Their distal ends are enlarged as olfactory vesicles, which have long cilia. b. The cilia have receptors that respond to dissolved substances. There are approximately 1000 different odorant receptors. c. The receptors activate a G protein complex, which opens ion channels. d. At least 7 (perhaps 50) primary odors exist. The olfactory neurons have a very low threshold and accommodate rapidly.arrow_forwardIn humans, the five principal kinds of taste sensations are_______,_______ , _______ ,______, and_____ . Molecules that leave the food and enter the air inside the mouth are detected by the sense of______ , which plays a major role in the brain’s perception of taste.arrow_forwardFill in the blank: The axons of olfactory receptors pass through small openings in the _______________________ of the ethmoidbone.arrow_forward
- When transitioning from a pitch black room, to a sunny room where there is a lot of light, what happens to the cells in the retina? 1. Ganglion cells will release more glutamate 2. Rod cells will release less glutamate 3. Ganglion cells will release less glutamate 4. Rod cells will release more glutamatearrow_forwardFill in the blank: The receptor cells of these organs are found in the wall of the membranous labyrinth in a structure called the_______________________.arrow_forwardCompare the mechanisms of the receptor molecules for salty and sour taste; the taste-receptor molecules for sweetness, bitterness, and umami; and odor-receptor molecules (Indicate if a given sense uses a GPCR, an ion channel etc and how the downstream signal might be different). Drawing is good for this type of question.arrow_forward
- (Human physiology) Hearing B is characterized by conductive hearing loss caused by an ear infection or blockage that interferes with the transmission of sound to the inner ear.Why does this patient hear bone conduction sound with lower intensity than other patients? (Should this disease reduce the sensitivity of sound perception?) Between A, C and D, which patients had neurological hearing damage causing overall reduction in hearing acuity and which patients had damage caused by an air horn? Why? (sorry for my bad english)arrow_forwardExplain why individuals are often so insensitive to their own body and breath odor. How does sensory adaptation contribute to this insensitivity? How have advertisers tried to capitalize on this situation?arrow_forwardFill in the blank: The sensory impulses pass from the olfactory bulbs through the _______________________ tracts to theinterpreting centers of the brain.arrow_forward
- What is not true about fragrance reception? a) Odor receptor cells have G-protein coupled receptor mechanisms with high amplification b) We have about 400 varieties of fragrance receptors c) All scent impulses are perceived consciously d) Odor receptor cells are metabolized in a few monthsarrow_forwardRegarding the sensation of various species, which of the following statements is false? A. The eyes of honeybees transduce parts of the electromagnetic spectrum that are invisible to humans B. Bats ears transduce sound waves that humans cannot hear C. Research has shown that the human eye transducers all of the electromagnetic spectrum to the brain, but the brain is unable to perceive it. D. Sharks have special organs that can sense the bioelectric fields of other living thingsarrow_forwardIn humans, what happens to visual information from the left visual field?A. It reaches the right half of each retina, which sends messages to the left hemisphere.B. It reaches the right half of each retina, which sends messages to the right hemisphere.C. It reaches the left half of each retina, which sends messages to the left hemisphere.D. It reaches the left half of each retina, which sends messages to the right hemisphere.arrow_forward
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