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 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.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter28: Animal Tissues And Organ Systems

Section: Chapter Questions

Problem 10SA

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Similar questions

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 above
How 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
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.
In addition to protection (physical and chemical barrier), the skin serves other functions. Which of the following is another vital function of the skin? a.It absorbs vitamin C so that the skin will not be subject to diseases. b.The cells of the epidermis store glucose as glycogen for energy. c.It aids in the transport of materials throughout the body. d.It converts modified epidermal cholesterol to a vitamin D precursor important to calcium metabolism.
According to the video “The Biology of Skin Color”, what is the pigment in our skin that reflects or absorbs light? A. Magnesium B. Melatonin C. Melanin D. Chlorophyll
According 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 effect
The following is true for people with light skin: a. A and B b. A - they should spend about 5-10 minutes several times a week in midday sun to ultimately produce vitamin D c. C - they should never use sun screen when outside if they want to make Vit D d. B - their skin cannot tolerate as much sun as people with darker skin before being damaged e. A, B, C, and D f. A, B, and C g. D - they can tolerate more UV rays than people with darker skin
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. Melanin
How do melanocytes and keratinocytes work together to protect the skin from UV damage? a. Keratinocytes maintain the proper pH for melanocytes to synthesize melanin granules. b. Keratinocytes provide the melanocyte with nutrients critical for melanin synthesis. c. Keratinocytes maintain the appropriate temperature so the melanin will not denature. d. Keratinocytes accumulate melanin granules to shield the keratinocyte’s DNA.
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
As individuals age, the number of collagen fibers that are found in the dermis of the skin decreases. What are the results of decreased collagen fibers in the dermis? Select all that apply. A The skin loses firmness and becomes wrinkled B The skin develops necrosis and slowly begins to die. C The inflammation levels in the skin increase drastically. The wound healing process in the skin is slower.