Your answer would definitely be D - Mitochondria. Mitochondria is the organelle that supplies all the energy for a cell. Hope I was helpful, have a good day! 8)
Octopus and squid have little suction cups on their tentacles. It helps with sticking onto food (so it doesn't get away) and also helps with sticking into things. If it wanted to camouflage into some rocks, it can use its tentacles to cling to to the rock.
Tentacles can also grab and carry things. Scientists have made tests where they would put a clam in a jar with the lid screwed on. The octopus would grab onto the jar and use its tentacles to twist the lid off.
Without tentacles, octopuses and squids would be pretty helpless and probably couldn't survive in the deep ocean.
Centrosomes, also called microtubule organizing systems, release the microtubules that arrange the chromosomes along the metaphase plate.
Near the Golgi, there are 9,0 microtubule multiplets that produce microtubules. In order to sustain a dynamic movement process and for the centralized organization of chromosomes along the meiosis,plate, these microtubules bind to the kinetochores of chromosomes utilizing dyneins and kinesins.
During metaphase, chromosomes are organized over the metaphase plate with the help of microtubules released from complexes on various cell surfaces. Microtubules are continuously destroyed and rebuilt in a dynamic process until chromosomes are centrally organized.
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