According 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.
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According 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.
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- According to the video “The Biology of Skin Color”, why is UVB critical for humans? A. It helps our bodies break down Vitamin D, which can be toxic to our bodies. B. It helps our bodies synthesize Vitamin C, which we need in order to absorb calcium in our diet. C. UVB is not critical or useful for us. D. It helps our bodies synthesize Vitamin D, which we need in order to absorb calcium in our diet.According to the video “The Biology of Skin Color”, why are UV rays dangerous to our bodies? What can they do? A. UV rays can mutate the DNA in our skin cells B. UV rays can cause skin cancer C. UV rays can destroy folate D. All of the aboveHow does skin color throughout the world match up with UV exposure? A. Darker skin is usually found in high UV areas while lighter skin is usually found in low UV areas B. UV rays are the same throughout the world, so there is no pattern or correlation with skin color C. Skin color throughout the world does not match up with UV exposure D. Lighter skin is usually found in high UV areas while darker skin is usually found in low UV areas
- PLEASE NOTE THIS IS A GROUPING OF ONE TOTAL QUESTION NOT INDIVIDUAL QUESTIONS AS A PREVIOUS TUTOR WOULD ONLY ANSWER ONE AND NOT THE GROUPING. B) What is one important function of melanin? A. Resets the diurnal biological clock B. Increases the amount of blood vessels C. Causes the skin to become cooler D. Absorbs harmful radiation E. Strengthens the skin or eyes C) Most of the cells of the epidermis are ________________. A. fibroblasts B. keratinocytes C. macrophages D. Langerhans cells D) The epidermis is nourished by diffusion from capillaries in the ___________. A. papillary layer of the dermis B. hypodermis C. epidermis D. reticular layer of the dermis E) Cell division occurs in which layer of the epidermis? A. Stratum lucidum B. Stratum corneum C. Stratum basale D. Stratum granulosum F) Which of the following is NOT a component of the epidermis thin skin? A.…Which of the following molecules would you add to skin cells to reduce the chance of skin cancer? Select one: a. Oxygen b. Carotene c. Vitamin D3 d. Carbon dioxide e. MelaninAccording to the video “The Biology of Skin Color”, how does UV exposure vary throughout the world? A. The UV rays are the same at the equator and the earth's poles B. There are higher UV rays near the equator and lower UV rays towards the north and south poles C. UV rays don't vary across the globe D. There are lower UV rays near the equator and higher UV rays towards the north and south poles
- What is the only statement that correctly identifies the ability of different wavelengths of UV light to penetrate the human skin? Note: UVA is the longest wavelength (least energy), and UVC is the shortest wavelength (most energy). If you've studied the electromagnetic spectrum you may remember that wavelength and energy have an inverse relationship. We'll talk more about this later in the course. Group of answer choices A- UVA light penetrates only as deep as the epidermis, which is where it has its effect B-UVB light penetrates only as deep as the epidermis, which is where it has its effect C-UVC light penetrates only as deep as the epidermis, which is where it has its effectBotox 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?Flamingos are not born pink, but through their diet absorb pigments that get deposited into their feathers which turns them from white to pink. Similarly, our own diet can effect the color of our skin if we were to eat high concentrations of food with absorbable pigments. For instance, if we ate a large amount of carrots and summer squash that contain beta-carotene, what color would you expect the skin to take on?' Yellow-green orange-green Yellow-orange Red
- Which of the following are examples of maintaining homeostasis (more than one answer may be correct)? a. You develop diarrhea in response to contracting norovirus b. Sweating due to eating spicy food c. Kidneys removing excess fluid through urine d. Insulin is released in response to high blood sugar, causing cells to use more sugarWhat is one important function of melanin? A. Causes the skin to become cooler B. Absorbs harmful radiation C. Strengthens the skin or eyes D. Resets the diurnal biological clock E. Increases the amount of blood vesselsPart II - Eye Coloration Puzzled, Alexia and Evan used the internet to research what gives the eye its color. "Eye color" refers to the color of the iris of the eye. Melanin is a dark pigment produced by cells in the iris that gives the eye its color. What determines the color of the eye is a combination of the amount, location, and qualities (e.g., different types) of the melanin present in the iris (Sturm & Larsson, 2009). The iris has a front layer and a back layer. The space in between them, called the stroma, is filled with various proteins, including white collagen fibers. For almost all eye colors, there is a lot of melanin on the back layer of the iris (Sturm & Larsson, 2009). Where people differ is in the melanin in the front layer of the iris. A lot of melanin in the front of the iris makes the eye look brown because, as light hits the front of the iris, the pigments absorb the light. Blue irises have less melanin in the front layer, so light can go through it. As light…
