Learning Objectives By the end of this section, you will be able to: Cancer is a collective name for many different diseases caused by a common mechanism: uncontrolled cell division. Despite the redundancy and overlapping levels of cell-cycle control, errors…
Learning Objectives By the end of this section, you will be able to: The cell cycle is an ordered series of events involving cell growth and cell division that produces two new daughter cells. Cells on the path to cell division proceed…
Learning Objectives By the end of this section, you will be able to: The continuity of life from one cell to another has its foundation in the reproduction of cells by way of the cell cycle. The cell cycle is…
Figure 6.1 A sea urchin begins life as a single cell that (a) divides to form two cells, visible by scanning electron microscopy. After four rounds of cell division, (b) there are 16 cells, as seen in this SEM image. After many…
Overview of Photosynthesis The process of photosynthesis transformed life on earth. By harnessing energy from the sun, photosynthesis allowed living things to access enormous amounts of energy. Because of photosynthesis, living things gained access to sufficient energy, allowing them to…
Learning Objectives By the end of this section, you will be able to: After the energy from the sun is converted and packaged into ATP and NADPH, the cell has the fuel needed to build food in the form of…
Learning Objectives By the end of this section, you will be able to: How can light be used to make food? It is easy to think of light as something that exists and allows living organisms, such as humans, to…
Learning Objectives By the end of this section, you will be able to: All living organisms on earth consist of one or more cells. Each cell runs on the chemical energy found mainly in carbohydrate molecules (food), and the majority…
Figure 5.1 This mockingbird’s diet, like that of almost all organisms, depends on photosynthesis. (credit: modification of work by Dave Menke, U.S. Fish and Wildlife Service) Chapter Outline 5.1 Overview of Photosynthesis 5.2 The Light-Dependent Reactions of Photosynthesis 5.3 The Calvin Cycle No matter how…