CK12 Life Science
Figure 3.10: In eukaryotic cells, the DNA is kept in a nucleus. The nucleus is surrounded by a double plasma membrane called the ...
Figure 3.11: Diagram of chloroplast (a) and electron microscope image of two mitochon- dria (b). Chloroplasts and mitochondria p ...
Figure 3.13: In this photo of plant cells taken with a light microscope, you can see a cell wall (purple) around each cell and g ...
Vocabulary cell The smallest unit of an organism that is still considered living; the basic unit that make up every type of orga ...
mitochondria The organelle in all eukaryotic cells that makes adenosine triphosphate (ATP), the “energy currency” of cells. nucl ...
Points to Consider Think about what molecules would need to be transported into cells. Discuss why it would be important for so ...
Chapter 4 Cell Functions 4.1 Lesson 4.1: Transport Lesson Objectives Describe several methods of transporting molecules and ion ...
membrane will be the focus of this lesson. What is Transport? The selectively permeable nature of the plasma membrane is due in ...
Passive Transport Small molecules can pass through the plasma membrane through a process called diffusion. Diffusionis the movem ...
equal amount enters and leaves the cell. In the medical setting, red blood cells can be kept intact in a solution that is isoton ...
Active Transport During active transport, molecules move against the concentration gradient, toward the area of higher concentra ...
of endocytosis include phagocytosis and pinocytosis.Phagocytosismoves large substances, even another cell, into the cell. Phagoc ...
Active transport methods move molecules in the direction of the higher concentration and require energy and a carrier protein. ...
exocytosis Movement of substances out of the cell by a vesicle fusing with the plasma membrane. facilitated diffusion Diffusion ...
Points to Consider The next lesson discusses photosynthesis. It is often said that plants make their own food. What do you thin ...
also known as blue-green bacteria, or blue-green algae) can also photosynthesize. Algae and cyanobacteria are important in aquat ...
Figure 4.8: The chloroplast is the photosynthesis factory of the plant. ( 7 ) Oxygen: An Essential Byproduct Oxygen is a byprodu ...
Figure 4.9: This overview of photosynthesis shows that light is captured during the light reactions, resulting in the production ...
Stage 1: Capturing Light Energy In the first step of the light reactions, solar energy is absorbed by the chlorophyll (and acces ...
NADPH produced earlier in photosynthesis. The ”food” made by photosynthesis is formed from the 3-carbon carbohydrate. Two 3-carb ...
«
1
2
3
4
5
6
7
8
9
10
»
Free download pdf