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- Our sense of smell is closely linked to our feelings and emotions. Bad odors usually evoke negative feelings, whereas pleasant odors give us a general sense of well-being or may be associated with good memories (perfume makers know this). The house of a pet owner can have an odor that a guest finds objectionable but the owner may not even be aware of. With a long enough visit even the guest may not notice the pet odors. Why is this?Describe the sense of touch including its components and the biochemical basis for their detectionList down the substances in which both specific and optical rotation are needed to be measured. And which isomer of those substances has pharmacological activity.
- Catalase is an enzyme that catalyzes hydrogen peroxide to become oxygen and water. Which type of specificity is being depicted by this enzyme? O stereochemical specificity group specificity linkage specificity absolute specificity..... All Purp Correction Name Date Mouse and Maze Graph A group of scientists conducted an experiment to determine if a chemical affected the ability of mice to learn a maze. The scientists had a group of 200 mice. Time for Mice to Complete a Maze Group A Group B Average Tine (sec.) 75 Day 1. Day Average Tinme (sec.) 81 2. 77 74 The mice were divided into two equal groups. Each group 3. 72 3. 72 65 75 contained 50 males and females. The scientists called one group 45 5. 68 6 29 65 "A" and the other group "B." Each day they would inject some 25 7. 62 of the chemical into the mice in 25 8. 55 9 20 52 group A. Group B also received an injection of the same volume, but they were injected with water. After ten minutes, the scientists 10 16 10 48 11 13 11 42 12 14 12 37 ran cach mouse through the same 13 12 13 35 14 n/a 14 complex maze. Average values for these tests are shown in the n/a 15 13 15 30 data table below. Construct a line graph on graph paper that displays the data for the two…Scent-free zones are important recommendations because some people are very sensitive to odorants. What is one reason that someone might be over-sensitive to odorants? higher threshold to activate the Golf cascade greater hyperpolarized resting potential in olfactory neurons reduced sensitivity of the Golf response lower threshold to activate the Golf cascade
- What property makes phosphatidylcholine a good emulsifying agent whereas triglycerides are not? Boiling point Degree of saturation Melting point PolarityWhich of these statements about taste is true? All bitter-tasting compounds have a similar chemical structure Sourness is detected when hydrogen ions bind to membrane receptors Sodium ions from foods can directly depolarize certain taste cells Sweetness is a measure of the concentration of hydrogen ions in foodThe recycling of rhodopsin: involves quanylate cyclase but not arrestin all of the answers are correct takes place exclusively in the outer segment limits the enormous signal amplification of phototransduction The fovea centralis, the center of the fovea, is responsible for: Glaucoma Accommodation Blindness acute vision O OO
- Occupational Hearing Loss Frequent exposure to loud noise of a particular pitch can cause loss of hair cells in the part of the cochlea that responds to that pitch. People who work with or around noisy machinery are at risk for such frequency-specific hearing loss. Taking precautions such as using ear plugs to reduce sound exposure is important. Noise-induced hearing loss can be prevented, but once it occurs it is irreversible because dead or damaged hair cells are not replaced. FIGURE 33.24 shows the threshold decibel levels at which sounds of different frequencies can be detected by an average 25-year-old carpenter, a 50-year-old carpenter, and a 50-year-old who has not been exposed to on-the-job noise. Sound frequencies are given in hertz (cycles per second). The more cycles per second, the higher the pitch. FIGURE 33.24 Effects of age aria occupational noise exposure. The graph shows the threshold hearing capacities fin decibels) for sounds of different frequencies (given in hertz) in a 25-year-okj carpenter (blue), a 50-year-old carpenter (red), and a 50-year-otd who did not have any on-the-job noise exposure (brown). 2. How loud did a 1,000-hertz sound have to be for the 50-year-old carpenter to detect it?Occupational Hearing Loss Frequent exposure to loud noise of a particular pitch can cause loss of hair cells in the part of the cochlea that responds to that pitch. People who work with or around noisy machinery are at risk for such frequency-specific hearing loss. Taking precautions such as using ear plugs to reduce sound exposure is important. Noise-induced hearing loss can be prevented, but once it occurs it is irreversible because dead or damaged hair cells are not replaced. FIGURE 33.24 shows the threshold decibel levels at which sounds of different frequencies can be detected by an average 25-year-old carpenter, a 50-year-old carpenter, and a 50-year-old who has not been exposed to on-the-job noise. Sound frequencies are given in hertz (cycles per second). The more cycles per second, the higher the pitch. FIGURE 33.24 Effects of age aria occupational noise exposure. The graph shows the threshold hearing capacities fin decibels) for sounds of different frequencies (given in hertz) in a 25-year-okj carpenter (blue), a 50-year-old carpenter (red), and a 50-year-otd who did not have any on-the-job noise exposure (brown). 4. Based on these data, would you conclude that the hearing decline in the 50-year-old carpenter was caused by age or by job-related noise exposure?Occupational Hearing Loss Frequent exposure to loud noise of a particular pitch can cause loss of hair cells in the part of the cochlea that responds to that pitch. People who work with or around noisy machinery are at risk for such frequency-specific hearing loss. Taking precautions such as using ear plugs to reduce sound exposure is important. Noise-induced hearing loss can be prevented, but once it occurs it is irreversible because dead or damaged hair cells are not replaced. FIGURE 33.24 shows the threshold decibel levels at which sounds of different frequencies can be detected by an average 25-year-old carpenter, a 50-year-old carpenter, and a 50-year-old who has not been exposed to on-the-job noise. Sound frequencies are given in hertz (cycles per second). The more cycles per second, the higher the pitch. FIGURE 33.24 Effects of age aria occupational noise exposure. The graph shows the threshold hearing capacities fin decibels) for sounds of different frequencies (given in hertz) in a 25-year-okj carpenter (blue), a 50-year-old carpenter (red), and a 50-year-otd who did not have any on-the-job noise exposure (brown). 3. Which of the three people had the best hearing in the range of 4,000 to 6,000 hertz? Which had the worst?