If each subunit of a hemoglobin protein molecule carries a heme group and a hemoglobin protein molecule is made of four subunits, two α and two β, we can simply multiply four (number of heme groups that can be found in one hemoglobin protein molecule) by three (number of hemoglobin protein molecules considered). 4×3=12
There are twelve heme groups in three hemoglobin protein molecules.
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Answer:
During light reaction of Photosynthesis ATP and NADPH are formed.
Explanation:
Reactions driven by solar energy
H2O=H+ + OH-
4OH- - 4e- =4OH
4OH=2H2O+O2
Second reaction
NADH+e- +H+=NADPH
Carbon dioxide fixation occurs during Calvin cycle.Carbon dioxide is being fixed into glucose molecule.
The name of the enzyme is Ribulosebisphosphate Carboxylase(RUBISCO)
The normal substrate for this enzyme is Ribulose bisphosphate(RUBP)
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We feel hotter in summer than in winter because the temperature is generally higher than in winter.
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What are seasons?</h3>
There are three seasons on earth namely winter, summer, and rainy season. In the winter season, the temperature is cold and during summer the temperature is higher.
Timing and characteristic of season depend upon the location of the earth. The time of a year region experience season depends on it is northern hemisphere or southern hemisphere.
The southern hemispheres experiences winter while northern hemisphere experiences summer. The cycle of seasons is caused by earth's tilted towards the earth. The planet rotates around an axis.
Therefore, We feel hotter in summer than in winter because the temperature is generally higher than in winter.
To learn more about seasons, refer to the link:
brainly.com/question/19009677
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