1. There are about types of cells in human bodies. Question options: A.50 B.100 C.150 D.200
2.What is one key difference between mitosis and meiosis during the prophase 1 stage?
Question options: A. crossing over B. nuclear envelope breaks apart
C. spindle fibers start to form D. DNA coils

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Explanation:

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue