The Influence of Hair Color on the Concentration Zinc and Copper in Boys’ Hair1 JOSÉ DOREA2 ANDSUELI ESSADO PEREIRA G. Nutrition Laboratory‚ Faculdade de Ciencias da Saude‚ Universidade de Brasilia‚ 70910 Brasilia DP‚ Brazil of ABSTRACT Head hair of 150 normal boys from Brazil ranging in age from 1 to 12 years was studied for the influence of color on concentrations of zinc and copper. Hair color was classified visually and also quantified by melanin concentra tion. Visual classification
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OCR gateway Core C1 revision notes Anything written in purple is for higher tier Exam tips are in red Fossil Fuels 3 types Coal (made from dead plants that lived millions of years ago) Crude oil (made from dead sea creatures that lived millions of years ago) Natural gas (made from dead sea creatures that lived millions of years ago) Key words to learn Non-renewable- fossil fuels are said to be this as we are using them up faster than they can be made Finite- these will run out if we
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Paulo César Stringheta‚ and Milton Cano Chauca Anthocyanin in spinach vine (Basella rubra) fruits Experimental t-test In conclusion‚ the pigment extracted from the fruits of spinach vine (B. rubra) was more stable at pH 5 and pH 6. Increases in temperature and the presence of light affected the stability of this pigment. Results demonstrate that this pigment exhibits good stability and could be applied to foods as a natural food color. The study is limited to the stability of anthocyanin in spinach
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Variagated Leaves Total absence of plastid pigments causes a sector of a leaf or stem to have white patches. This condition is termed variegation (Metrosideros). Variegation is produced when there is a cell mutation (cytological chimera)‚ and all cells produced from that mutant mother cell lack the pigments‚ either because plastids are not present or the plastid cannot complete the manufacture of the pigment apparatus. White‚ therefore‚ is where color is missing. The zones where chloroplasts are
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The Effect of Temperature on Beet Cell Membranes Introduction In this lab‚ we are going to learn how the stress of temperature affects fresh beets. We have come to learn that cell membranes organize the chemical activities of cells. All cells are made of plasma membranes‚ often called fluid mosaics. It is sometimes described as a mosaic because it is made of protein molecules that are embedded into phospholipids. Phospholipids are the main structural support of the membrane and the proteins
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occur on the granal membranes. Pigments are required to absorb and transduce the light energy. Membrane proteins act as electron carriers. 2. The light independent reactions that occur in the stroma of the chloroplast. Chlorophyll and other pigments are grouped together to form a photosystem. There are two photosystems‚ photosystem II(P700) and photosystemI(P680) Each photosystem acts as a light harvesting system; light energy is passed from the accessory pigments to the chlorophyll in the reaction
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micro pigments are injected in your scalp. With these pigments‚ small hair follicles get developed which further facilitates in growth of thicker hair‚ to restore your full hair appearance. Tiny needles are used for this purpose. There are a lot of myths about the effectiveness and success of scalp pigmentation. Mostly‚ it is considered as a fake treatment‚ leaving small dots on your scalp that fade away after a while. No doubt‚ this treatment is much like a tattooing procedure and pigments do fade
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• 1. The organic molecule produced directly by photosynthesis is sugar: a) lipids; b) sugar; c) amino acids; d) DNA • 2. The photosynthetic process removes carbon dioxide from the environment. a) water; b) sugar; c) oxygen; d) chlorophyll; e) carbon dioxide • 3. The process of splitting water to release hydrogens and electrons occurs during the light dependent process. a) light dependent; b) light independent; c) carbon fixation; d) carbon photophosphorylation; e) glycolysis • 4. The process
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tapetum lucidum bounces it back at the retina‚ giving the animal a second chance to see it. It’s this ricocheting light that gives off the vaguely eerie glow we have come to associate with scary tales. You see‚ not all light is absorbed by visual pigments in the retina; some of it passes through. By increasing or rather‚ by bouncing the light that comes into their eyes‚ these animals effectively increase the amount of light available for their eyes to see with‚ and increase their ability to see in
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see in this picture- its just a carbon ring with 3 methyl groups and an oxygen (ketone) 4. Pigments are chemicals that add color. a. There are a large variety of chemicals that are used as pigments in nail polish. b. For example‚ Iron Oxides are used to produce the color red. Many of the pigments used in nail polish are the same as those in paint. c. Most colors require a mixture of several different pigments 5. Pearls-are not in all nail polishes. When they are present‚ these pearlescent minerals
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