When internal and external conditions are inappropriate to initiate a division cycle, the cells accumulate at the G1 restriction point. In animals, what protein is responsible for keeping cells at this restriction point?

Acell goes through cellular respiration and produces atp which it then uses to move a molecule across the cell membrane. how does the energy in the original glucose molecule change during this process? (2 points)

Explain the significance of meiosis in sexual reproduction

What is one reason why transpiration is important in plants? question 19 options: it produces food from the sugar in the plant cells. it enables the flow of water out of the plant. it produces carbon dioxide in the leaves of the plant.