please and thank you so much! I have selected responses, but am questioning if t

Question

please and thank you so much! I have selected responses, but am questioning if they are correct

Question 12 2 pts Photosynthesis, the process and most of the enzymes needed, evolved in a time when the atmosphere had no oxygen. What problem has appeared now that oxygen makes up more than a fifth of the atmosphere? O Rubisco can bind to oxygen instead of CO2 and as result release CO2 Rubisco can release oxygen, increasing the concentration of oxygen in the atmosphere Rubisco can fix oxygen into sugars, producing greater amounts of carbohydrates Rubisco can use oxygen in order to produce energy such as ATP O

Explanation / Answer

Q12.
Option A is correct.
The problem with increased oxygen content in the atmosphere is that now RUBISCO can bind to oxygen leading to photorespiration. This leads to decreased photosynthetic efficiency.
In photorespiration, RUBISCO binds to Oxygen and releases CO2.

Q9.
Options A, B and C are correct.
Adaptive radiation involves groups of related organisms inhabiting new areas with low competition leading to speciation.
It increases the diversity of a community. The adaptive radiation of one group has nothing to do with the adaptive radiation of another group as both of them inhabit different places.

Q10.
Option C is correct.
Archea and bacteria are prokaryotes. They lack a nucleus.

Q17.
Options B and D are correct.
Transformation: Taking up DNA from the surroundings.
Conjugation: Replication and exchange of plasmid.

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