Is cellular respiration and photosynthesis are not involved in the carbon cycle
That statement is not accurate. Both cellular respiration and photosynthesis are important processes involved in the carbon cycle.
Photosynthesis is the process by which plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen, using sunlight as an energy source. During this process, carbon dioxide from the atmosphere is taken in by plants, and carbon is incorporated into organic compounds.
On the other hand, cellular respiration is the process by which living organisms, including plants, animals, and even bacteria, release energy from glucose molecules and convert it into usable cellular energy (ATP). During cellular respiration, oxygen is used and carbon dioxide is produced as a waste product.
These two processes are closely linked in the carbon cycle. During photosynthesis, carbon is taken up from the atmosphere and incorporated into organic matter. The organic matter is then used as a source of energy through cellular respiration, releasing carbon dioxide back into the atmosphere. This continuous transfer of carbon between the atmosphere, plants, and animals is an essential part of the carbon cycle.