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Do people who have xeroderma pigmentosum go to school?
Xeroderma pigmentosum (XP) is heterogenic disease.XP variant need a minimum of photoprotection it can be considered as normal people.XPA has a neurologic abnormalities, some are severe and can't be succeful in the school. Mild form can study and learn some technique home work.XPC are intelligent but need a high photoprotection
Describe each pigment separated on a thin layer plate used for further study?
Chlorophyll: A green pigment found in plants responsible for photosynthesis, which absorbs light energy to produce sugars. Carotene: An orange pigment that helps with light absorption in plants and acts as an antioxidant. Xanthophyll: A yellow pigment found in leaves responsible for light harvesting and photoprotection in chloroplasts.
What is the role of carotenoids in a photosytem?
Carotenoids are colored pigments found in plant cells such as in brown algae, in carrots and more. They are accessory pigments which do not do photosynthesis. They transmit energetic to chlorophyll for the process of photosynthesis.
What other pigments exist in green leaves and what is their functions?
Carotenoids can be found in green leaves which are hydrocarbons that are multiple shades of yellow and orange. Some carotenoids function as photoprotection, they absorb and dissipate excessive light energy that would otherwise harm the chlorophyll.
Why do plants contain other pigments besides chlorophyll?
Plants contain other pigments besides chlorophyll to enhance their ability to absorb light and protect against damage from excess sunlight. Carotenoids, for example, capture light in different wavelengths and contribute to photosynthesis, while also providing photoprotection. Additionally, pigments like anthocyanins can deter herbivores and attract pollinators, playing a crucial role in plant reproduction and survival. This diversity in pigments allows plants to adapt to various environmental conditions and optimize their energy conversion.
Why is it important to have two types of pigments in plants?
Having two types of pigments in plants is crucial for maximizing photosynthesis. Chlorophyll primarily absorbs light in the blue and red wavelengths, while accessory pigments, such as carotenoids, capture additional light energy from other wavelengths and help protect the plant from damage caused by excess light. This combination allows plants to efficiently utilize a broader spectrum of sunlight, optimizing energy production for growth and survival. Additionally, accessory pigments can help with photoprotection and attract pollinators or seed dispersers, enhancing reproductive success.
How do melanin carotene and blood affect skin color?
Melanin darkens skin. It is also responsible for photoprotection, ie resistance to ultraviolet light-induced skin damage. This is achieved by rapidly converting incoming ultraviolet light into heat, which is much less likely to cause problems like free radicals. Thus, sunlight exposure tends to stimulate melanin production.
What are the accessory pigments and what are their functions?
red, yellow, orange, or brown
How do carotene and xanthophyll function differently from chlorophyll?
carotene and xanthophyll absorb blue green light while chlorophyll absorbs all other colors of light in the spectrum. Once carotene and xanthophyll have absorbed light, they transfer the light energy to chlorophyll.
What function do photosynthetic pigments other than chlorophyll serve?
Photosynthetic pigments other than chlorophyll mostly participate in the energy-transfer processes just as chlorophyll. They can also function to protect the photosynthetic reaction center from auto-oxidation. In non-photosynthesizing organisms they have been linked to oxidation-preventing mechanisms.They can also serve as free radical scavengers.
Why is the colour plant leaves different?
well this might not really be the answer, but every different textures reflect different colours, like a banana absorbs every colour except for yellow, and grass absorbs every colour except for green.... or the other way around...
What is the difference of melanocytes and keratinocytes?
Answer taken from the article:Costin & Hearing (2007). Human skin pigmentation: Melanocytes modulate skin color in response to stress. The Faseb Journal, 21(4), 976-994."Melanin biosynthesis is a complex pathway that appears in highly specialized cells, called melanocytes, within membrane-bound organelles referred to as melanosomes. Melanosomes are transferred via dendrites to surrounding keratinocytes, where they play a critical role in photoprotection. The anatomical relationship between keratinocytes and melanocytes is known as 'the epidermal melanin unit' and it has been estimated that each melanocyte is in contact with ∼40 keratinocytes in the basal and suprabasal layers."Translated: Melanocytes produce melanin in nice little packages called, melanosomes. These melanosomes are then transferred to neighboring keratinocytes (i.e., the hair follicle) through dendrites. This is how the hair follicle gets its color, even though the actual hair follicle doesn't produce melanin itself.
