Chemistry Of Paint Pigments

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FAQ

Explain why plants need a variety of pigments to carry out photosynthesis?

Each pigment in the leaf absorbs only a very narrow range of wavelength. In order to make use of more light than one specific wavelength, then plants have several different pigments. Chlorophyll A and Chlorophyll B intercept wavelengths from roughly 400-500 nm and then again from 650-700 nm. There are several different carotenoid pigments, each intercepting a pretty specific wavelength. I think these are within 450 - 510 nm. You have a high rate of photosynthesis in the blue range and then again in the red range. (I wasn't able to find a very good image that explains this clearly, but the sources listed below do a decent enough job.) Green light and most of the yellows will be reflected and not used by the plant. Keep in mind that while phytochrome is a pigment, it is not involved in photosynthesis.

Please help me answer these Genetics problems. These are the problems that was assigned in the previous exams, but the professor doesn't provide the answer keys or a review session to go over these.Pigment in the mouse is produced only when the C allele is present. Individuals of the cc genotype have no color. if color is present, it may be determined by the A, a alleles. AA or Aa results in the agouti color, while aa results in the black color. In 3 crosses between agouti females whose genotypes are unknowns and males of the aacc genotype, the following phenotypic ratios were obtained. Female 1: 8 agouti 8 colorlessFemale 2: 4 agouti 5 black 10 colorless

interior the 1st bypass AACC x aacc, discern a million will produce all AC gametes and discern 2 ac. Your F1 will all be AaCc. As all have the C allele they are going to be pigmented and as they're Aa they're going to all be agouti. Your F1 bypass is AaCc x AaCc. each and each discern can produce 4 gametes AC, Ac, aC, ac. To get all the genotypes you would be able to desire to entice a 4 x 4 Punnett sq.. each and each column and each and each row has between the 4 gametes in it and the cells comprise the blended genotypes. in case you count type up your genotypes you will discover 9 comprise the two A and C, those are agouti, 4 comprise cc, and all of those would be white regardless of the genotype at A, 3 comprise aa and C, those will all be black. So your phenotypic ratio would be 9:4:3 agouti: white: black the subsequent 3 crosses are all attempt crosses - you employ a recessive discern to artwork out the genotype of the different discern. a million. As lots of the offspring are colourless, you be attentive to that the two mothers and dads carry the c allele, as you pick cc for colourless mice. As there are no black mice, there is not any a allele interior the mum, as no aa offspring are produced. The bypass is AACc x aacc. woman gametes are AC or Ac and male gametes are all ac, offspring are the two AaCc or Aacc. 2. Is the opposite of bypass a million. There are black offspring so mom would desire to hold an a allele to furnish black mice, as there are no colourless ones, there is not any c allele interior the mum. you could write down the bypass and the F2 effect now. 3. This time all hues are produced, so the mum would desire to hold the two a and c alleles. Her genotype is AaCc, she would be able to offer 4 gametes as interior the 1st bypass and you will artwork out the resultant genotypes and phenotypes interior the F2.

Can someone describe the role of accessory pigments in photosynthesis?

Accessory pigments help the plant absorb energy from different wavelengths of light other than those that are absorbed by the main pigment chlorophyl.

Many of the microorganisms found on environmental surfaces are pigmented. Of what possible advantage is the pigment?

So they can absorb different light frequencies to use for energy (from photosynthesis). Light travels in water according to the frequency (wavelength). So different pigmented organisms are able to exist in different environments, possibly reducing competition with other forms.

what are the accessory pigments in plant photosynthesis?

This Site Might Help You. RE: what are the accessory pigments in plant photosynthesis?

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photosynthetic pigment or antenna pigment is a pigment that is present in chloroplasts or photosynthetic bacteria and captures the light energy necessary for photosynthesis. Green plants have five closely-related photosynthetic pigments (in order of increasing polarity): Carotene - an orange pigment Xanthophyll - a yellow pigment Chlorophyll a - a blue-green pigment Chlorophyll b - a yellow-green pigment Phaeophytin a[1] - a gray-brown pigment Phaeophytin b[1] - a yellow-brown pigment Chlorophyll a is the most common of the six, present in every plant that performs photosynthesis. The reason that there are so many pigments is that each absorbs light more efficiently in a different part of the spectrum. Chlorophyll a absorbs well at a wavelength of about 400-450 nm and at 650-700 nm; chlorophyll b at 450-500 nm and at 600-650 nm. Xanthophyll absorbs well at 400-530 nm. However, none of the pigments absorbs well in the green-yellow region, which is responsible for the abundant green we see in nature.

a question on my photosynthesis test review...=_=

it is in maximum cases the nitrogen. All fertilizers have a N-P-ok quantity ( like 10-10-10) the place each quantity corresponds to the according to cent of each nutrient: nitrogen (N), phosphorous (P), and potassium (ok). The nitrogen in Miracle advance is in maximum cases urea compounds, like safeguard pronounced.

What is the difference between dyes and pigments? Could you give some examples of each one please.

Dye is used to change the color of things, like cloth. A pigment is like the color and texture of your skin. Or the color in paint.