1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zubka84 [21]
3 years ago
12

Plant Pigments and Photosynthesis

Chemistry
1 answer:
Nostrana [21]3 years ago
3 0

Answer:

1. Chlorophyll A has a yellow-green pigment and absorbs at a wavelength of 430-662 nm.  Chlorophyll B has a blue-green pigment and absorbs at a wavelength of 453-642 nm. Carotene has an orange pigment and absorbs at a wavelength of 460-550 nm. Xanthophyll has a yellow pigment and absorbs at a wavelength of 700 nm. Anthocyanin has a purple pigment and absorbs at a wavelength of 660 nm.

2. Plant and planktons that survive by photosynthesis do so with the help of pigments. These pigments help them trap light ( e.g sunlight). When this happens a reflection occurs which gives rise to the pigment colour observed which is usually not absorbed. A typical example is seen in chlorophyll which is green pigmented hence it absorbs all other wavelengths of light the except green.

3. The various ways in which the rate of photosynthesis can be measured include: Measuring the amount of carbon(IV)oxide uptake as well as measuring the amount of oxygen produced.

The reason for the colour change in deciduous trees in the fall is because the chlorophyll in the leaves of the plants is broken down leading to the loss of the green colouration. Also, the presence of anthocyanin can also be responsible for the yellow pigmentation.

5. Due to the evolution of species, and the fact that life originated from microbes, microbes have evolved from the single membrane to more complex systems with specialized organs like the mitochondria and chloroplasts. Early microbes were photosynthetic in nature e.g phytoplanktons which have evolved specialized systems controlled by the DNA to ensure their survival.

 

Explanation:

1. Chlorophyll A has a yellow-green pigment and absorbs at a wavelength of 430-662 nm.  Chlorophyll B has a blue-green pigment and absorbs at a wavelength of 453-642 nm. Carotene has an orange pigment and absorbs at a wavelength of 460-550 nm. Xanthophyll has a yellow pigment and absorbs at a wavelength of 700 nm. Anthocyanin has a purple pigment and absorbs at a wavelength of 660 nm.

2. Plant and planktons that survive by photosynthesis do so with the help of pigments. These pigments help them trap light ( e.g sunlight). When this happens a reflection occurs which gives rise to the pigment colour observed which is usually not absorbed. A typical example is seen in chlorophyll which is green pigmented hence it absorbs all other wavelengths of light the except green.

3. The various ways in which the rate of photosynthesis can be measured include: Measuring the amount of carbon(IV)oxide uptake as well as measuring the amount of oxygen produced.

The reason for the colour change in deciduous trees in the fall is because the chlorophyll in the leaves of the plants is broken down leading to the loss of the green colouration. Also, the presence of anthocyanin can also be responsible for the yellow pigmentation.

5. Due to the evolution of species, and the fact that life originated from microbes, microbes have evolved from the single membrane to more complex systems with specialized organs like the mitochondria and chloroplasts. Early microbes were photosynthetic in nature e.g phytoplanktons which have evolved specialized systems controlled by the DNA to ensure their survival.

You might be interested in
there are 1540 megawatts of wind-generated electricity produced globally every year. This amount is equivalent to how many kilow
Reptile [31]

1.54 x 10⁶kW

Explanation:

The problem here is converting from megawatts into kilowatts.

  Given 1540megawatts.

The mega- and kilo- watts are prefixes that denotes multiples of units.

  1 megawatt = 10⁶watts

  1 kilowatt = 10³watts

Now given 1540megawatts power to Kilowatt power;

   We see that :

   1000kW = 1mW

 1540mW x \frac{1000kW}{1mW} = 1.54 x 10⁶kW

learn more:

energy units brainly.com/question/4791744

#learnwithBrainly

4 0
3 years ago
A reaction is second order respect to the reactant A. If the reaction is 85% complete in 12 minutes, how long would it take for
AnnZ [28]

Answer:

e. 22s

Explanation:

Initial Concentration = 100

Final concentration = 15 ( Since the reaction is 85% complete)

Time = 12 minutes = 720 seconds

The integrated rate law for second order reactions is given as;

1 / [A] = (1 / [A]o) + kt

Making k subject of interest, we have;

kt = (1 / [A] ) - (1 / [A]o )

k = (1 / [A] ) - (1 / [A]o ) / t

k = [(1/ 15) - (1 / 100) ] / 720

k = (0.0667 - 0.01 ) / 720

k = 0.0567 / 720

k = 7.875e^-5

How long would it take for the reaction to be 15% complete?

Final concentration = 85 (Since the reaction would be 15% complete)

The integrated rate law for second order reactions is given as;

1 / [A] = (1 / [A]o) + kt

Making t subject of interest, we have;

kt = (1 / [A] ) - (1 / [A]o )

t = (1 / [A] ) - (1 / [A]o ) / k

t = [(1 / 85 ) - (1 / 100) ] / 7.875e^-5

t = (0.0117 - 0.01 ) / 7.875e^-5

t = 0.001765 / 7.875e^-5

t = 22.41 seconds

Corect option = E.

3 0
3 years ago
How many electrons are in a ion that has 16 protons and 59 neutrons if it has negative 2 charge? ​
GalinKa [24]
Hi there I believe it’s 18 please let me know if I’m wrong :)
6 0
1 year ago
Someone tell me the definitions of these words
zzz [600]

Answer: conductive means to take charge or be in charge

metals ar like gold iron and stuff like that

and the last but not least would be Filling something up

Explanation:

8 0
2 years ago
Please help!
Misha Larkins [42]
Your answer is D, OH-! correct me if I’m wrong.
4 0
2 years ago
Other questions:
  • Tell why small droplets of water on an oily surface are almost spherical.
    14·1 answer
  • A student has a rectangular block. It is 2 cm wide. 3 cm tall and 25cm long. It has a mass of 600 g. First, calculate the volume
    14·1 answer
  • If electrons were used in the two slit experiment instead of light, what change would need to be made to the slit spacing in ord
    5·1 answer
  • What is the overall charge of an ion that has 12 protons, 10 electrons, and 14 neutrons?
    14·1 answer
  • After taking a shower, you notice that small droplets of water cover the mirror. Explain how this happens. Be sure to describe w
    5·1 answer
  • HELP!!! PLEASE!!!
    6·1 answer
  • What is the number of electrons shared in the multiple carbon-carbon bond in one molecule of 1-pentyne?
    12·1 answer
  • Consider two gases, A and B, are in a container at room temperature. What effect will the following changes have on the rate of
    14·2 answers
  • How much heat is transferred in the process of completely melting a 1.6kg block of ice starting at -15 degrees Celsius? Is this
    7·1 answer
  • uranium-232 has a half-life of 68.8 years. after 344.0 years how much uranium-232 will remain from a 125.0g sample
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!