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Alinara [238K]
3 years ago
7

What is the purpose of climate strike movement ?

Biology
1 answer:
Neko [114]3 years ago
6 0

Answer:

The school strike for the climate also known variously as Fridays for Future (FFF), Youth for Climate, Climate Strike or Youth Strike for Climate, is an international movement of school students who take time off from class to participate in demonstrations to demand action to prevent further global warming and climate change.

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In the lab, you isolate a chlorella mutant that is unable to switch xanthophyll pigments into the inactive, non-heat-dissipating
balandron [24]

Answer:

Option B, no, because the xanthophylls prevent the production of reactive oxygen species.

Explanation:

Complete question

In the lab, you isolate a chlorella mutant that is unable to switch xanthophyll pigments into the inactive, non-heat-dissipating form. if you released that mutant into a small pond shaded by trees, would the mutation spread, and why?

a) yes, because the xanthophylls prevent the production of reactive oxygen species.

b) no, because the xanthophylls prevent the production of reactive oxygen species.

c) no, because xanthophyll dissipates absorbed light as heat, and in low light environments, such dissipation would decrease photosynthesis and therefore growth.

d) yes, because the heat released by the xanthophylls would warm up the cells and enhance photosynthesis.

e) no, because mutations never spread in nature

Solution

Xanthophylls are oxygenated carotenoids which are very essential for photosynthesis of plant. They play a major role in harvesting light and in photoprotection. The structure of xanthophyll consists of conjugated double bonds and they are good at facing  reactive oxygen species (such as cholera vector) thereby damaging their DNA, restricting the cellular pathways by damaging the oxidation pathway. Hence, in presence of reactive oxygen species the light received by xanthophylls is not used to in photosynthesis but in quenching the reactive oxygen species .

Hence, option B is correct

 

6 0
3 years ago
A true-breeding red rose is repeatedly mated with a true-breeding white rose, and all of their offspring are red. if two of thes
tamaranim1 [39]
100% would be red because if you take your chart, you would put Rw and Rw on the columns. which would lead to all 4 boxes being, Rw, Rw, Rw, Rw.  
5 0
3 years ago
How do different processes of the
dlinn [17]

Answer:

Igneous rocks are formed from cooled magma, magma is formed from melted metamorphic rock, metamorphic rock is formed from either heated igneous rock or heated and pressurized sedimentary rock, sedimentary rock is formed from sediments throught compaction and cemenetaion and sediments are formed from weathered and eroded igneous or metarmorphic rocks

Explanation:

For more info look up rock cycles and hit images for a simple format

4 0
2 years ago
Read 2 more answers
Describe the social implications of the increased availability of the female contraceptive<br> pill?
saw5 [17]
Availability of the pill had an impact on various aspects of social life, including women's health, fertility trends, laws and policies, religion, interpersonal relationships and family roles, feminist issues, and gender relations, as well as sexual practices among both adults and adolescents.
8 0
2 years ago
What can a person do to limit exposure to X-rays
8_murik_8 [283]

Answer:

How can I reduce my exposure to radiation from X-rays?

  • Tell the X-ray technologist in advance if you are, or might be, pregnant.
  • Ask if a protective shield can be used. ...
  • Ask your dentist if he/she uses the faster (E or F) speed film for X-rays. ...
  • Know your X-ray history.
3 0
2 years ago
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