3 is a
7 is b hope I helped
Answer:
The correct option is C.
Explanation
Option A
Amines are the organic compounds which contain amino functional groups (-NH2), i.e 1-Propamine (CH3-CH2-CH2-NH2). so this is incorrect option.
Option B
Phosphate group is present in group of organic compounds known as organic phosphates. they are involved in energy transfer reaction. the best example is ATP. This option is also incorrect.
Option C
option C is correct because Acetic acid belongs to a group of organic compounds known as carboxylic acids. Carboxylic acid is characterized by the presence of carboxyl functional group (-COOH).
Conclusion
it is concluded that acetic acid contains carboxyl group.
The dorsal horn of the spinal cord contains cell bodies of somatic motor neurons. there are two kinds of horns found in the spinal cord: <span>dorsal horns are described as mainly sensory, while on the other hand, those in the ventral horns are are motor in majority. Answer is C.</span>
Answer: the development of the enzyme Rubisco and evolution of oxygenic photosynthesis.
Explanation: One can pick many key steps in early evolution: the development of the first cells, oxygenic photosynthesis, endosymbiosis leading to eukaryote organisms.
One important step was the mutation to the enzyme ribulose bisphospate carboxylase oxygenase (Rubisco) which enabled oxygenic photosynthesis.
The cyanobacteria that had Rubisco changed the planet’s atmosphere by producing oxygen as a by-product of photosynthesis. They were the most successful organisms of the time and have continued as a successful and ubiquitous group of organisms for billions of years.
The production of oxygen changed the direction of evolution profoundly. Later endosymbiosis led to the evolution of plants, with cyanobacteria the ancestors of chloroplasts, making Rubisco one of the most common enzymes on the planet.
Potassium and a herb known as musa
