Throughout the cell cycle, there are numerous checkpoints, or proofreading stops. These checkpoints are extremely beneficial for making sure the intricate steps of growth, repair, and replication are being performed correctly. Why do you think the cell would need these checkpoints? What do you think would happen if the cell did not get checked at certain phases?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?