Some modern ethnic groups (white Europeans and Asians) have apparently inherited genes from Neanderthals that may influence resistance to cold temperatures. What type of genes might this be? Don’t over think this question – think about what physical things help with keeping humans warm
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- Some modern ethnic groups (white Europeans and Asians) have apparently inherited genes from Neanderthals that may influence resistance to cold temperatures. What type of genes might this be? Don’t over think this question – think about what physical things help with keeping humans warm
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- The range of regulated body temperatures in mammals is about 36 to 40°C , while in birds it is slightly higher, 38 to 42°C, close to the limit compatible with life. Why do you imagine birds maintain higher body temperatures thanmammals? Do you think eagles and hummingbirds maintain the same body temperatures? Explain.Botox is a toxin produced by the bacterium Clostridium botulinum. When ingested with tainted food, Botox can kill by paralyzing muscles needed for breathing and heartbeat. Physicians inject small quantities of diluted Botox into facial muscles to paralyze them and reduce the appearance of wrinkles. Some people have expressed concern about a trend in which people come together for “Botox parties” at hair salons and other nonmedical settings. What are the risks of getting injections in such a setting?A high metabolic rate warms the animal from within, and insulation (such as fur and body fat) slows heat loss. Birds for example are warm-blooded animals that have high metabolism. During the winter, how do birds keep their body warm? The answers are found in their parts, their feathers, legs and feet, and their behavior like fluffing, shivering and roosting. How do their feathers, legs and feet help them regulate their body temperature? How do fluffing, shivering and roosting regulate bird's body temperature?
- What is the primary advantage of maintaining a constant high body temperature? a. It saves us the energy from having to look for a comfortable temperature. b. It enables us to survive in warmer climates. c. It keeps the muscles ready for rapid, prolonged activity even in cold weather. d. Other things being equal, animals with a higher body temperature live longer than those with a lower temperature.Chapter 3 discussed the importance of increasing your walking pace to achieve optimal health benefits. The chapter even discussed how walking at such increased speeds could help you burn calories like a runner. Was this information surprising to you? That is, were you surprised to learn that by just increasing your pace, you could burn the same amount of calories as someone running as their physical activity?After a long, hot run together, your friend tells you that you should dunk your head into a cooler of water to lower your body temperature more rapidly, rather than sitting and waiting to cool down. What do you think? Form a hypothesis, about how the ice-cold water might affect the rate at which your body temperature returns to normal. How could you test your hypothesis? Explain your answer.
- Compared to animals that are smaller, animals that are larger become cold more easily because they have a greater volume of tissue to keep warm have an easier time retaining heat produced by their metabolism are better adapted to and more likely to rely on cutaneous respiration because they have more skinAccording to the video “The Biology of Skin Color”, why do humans need calcium? A. To build strong and large brains. B. To build strong bones and have a healthy immune system. C. To help us digest dairy. D. Humans don't need calcium.for aquatic animals such as sharks, how do the animals maintain their body temperature when they are in warmer or colder waters? do they have a method where they can decrease or increase their body temperatures slightly such as torpor in birds?
- The Mojave Desert of the western United States is characterized by a hot, dry climate. Scientists predict that temperatures in this region will increase by an average of 4.7° F over the next 30 years. Birds found here (like ground-dwelling roadrunners) are endotherms and have many adaptations to reduce the amount of heat absorbed into the body while active in the daytime. If temperatures increase in this area as predicted, how might the plumage (the feathers covering the body) of these roadrunners change under the influence of natural selection? 1:The plumage will likely become longer and increase heat absorption into the body. 2:The plumage will likely become darker and increase heat absorbed from the environment. 3:The plumaqe will likely become lighter and increase heat reflected away from the body. 4:The plumage will likely become thicker and increase the amount of heat trapped by the body.Unique traits that allow living things to survive easier are called whatWhen reptiles after their behavior in order to help control their body temperature, what characteristic of living organisms is being shown?