Biology Now, 2e

86 ■ CHAPTER 05 How Cells Work CELLS A proton pump moves hydrogen ions (H+) across the membrane using energy from the electrons. ...

Rock Eaters ■ 87 an orientation that favors the making or breaking of chemical bonds (Figure 5.8). Each enzyme binds only to a s ...

88 ■ CHAPTER 05 How Cells Work CELLS and each carbon atom is released into the envi- ronment in a molecule of CO 2 , with water ...

Rock Eaters ■ 89 e– e– e– e– e– Glucose Pyruvate To Krebs cycle To oxidative phosphorylation NADH NAD+ NADH NAD+ ADP+ ATP ATP AT ...

90 ■ CHAPTER 05 How Cells Work CELLS supply, at which point your cells switch to glycol- ysis, as mentioned already. But how do ...

Rock Eaters ■ 91 Strains of yeasts, a type of single-celled fungi, are used in the brewing of alcoholic beverages such as beer. ...

Microbes that “eat” electricity may someday provide an efficient way to store renewable energy. That’s good, because we need suc ...

Rock Eaters ■ 93 “If you could convert electrical energy, through microbial processes, to a liquid fuel, that could be a really ...

94 ■ CHAPTER 05 How Cells Work (^7) In the diagram of photosynthesis shown here, fill in each blank with the appropriate term: ( ...

Rock Eaters ■ 95 travel into any organelle. The sensor relays information stating that it has lodged itself in a compartment of ...

To x i c P l a s t i c Two ruined experiments expose the health risks of chemicals in everyday products. ◆ (^) Label a figure of ...

97 CELLS 06 CHAPTER CELL DIVISION ...

98 ■ CHAPTER 06 Cell Division CELLS I t began as a run-of-the-mill experiment. In 1989, biologists Ana Soto and Carlos Sonnen- s ...

Toxic Plastic ■ 99 Figure 6.2 The cell cycle The eukaryotic cell cycle consists of two major stages: interphase and cell divisio ...

100 ■ CHAPTER 06 Cell Division CELLS cell simply copies the circular chromosome and each daughter cell receives one copy of the ...

Toxic Plastic ■ 101 division is more complicated than binary fission. Eukaryotic DNA forms multiple, distinct linear chromosomes ...

102 ■ CHAPTER 06 Cell Division CELLS necessary because every DNA molecule is enor- mously long, even in the simplest eukaryotic ...

Toxic Plastic ■ 103 Good Cells Gone Bad Cell division is not always a good thing. Runaway cell division can create a tumor (see ...

104 ■ CHAPTER 06 Cell Division CELLS Each chromosome is replicated before mitosis begins. As mitosis begins, the chromatin packs ...

Toxic Plastic ■ 105 the plastic mouse cages: the water bottles were leaking and the plastic cage walls were hazy. She asked arou ...