Biology (Holt)
The Cytoskeleton The cytoskeleton provides the inte- rior framework of an animal cell, much as your skeleton provides the interi ...
The Cell Membrane The cytoplasm of a cell is contained by its membrane. Cell mem- branes are not rigid like an eggshell. Rather, ...
Carbohydrate portion Cell-surface marker: Identifies cell type Phospholipid heads Protein portion Phospholipid tails Receptor ...
Nuclear pores Nuclear envelope Nucleolus Section 3 Cell Organelles 62 CHAPTER 3Cell Structure The Nucleus Most functions of a eu ...
Ribosomes and the Endoplasmic Reticulum Unlike prokaryotic cells, eukaryotic cells have a system of internal membranes that play ...
Packaging and Distribution of Proteins Vesicles that contain newly made proteins move through the cytoplasm from the ER to an or ...
Mitochondria Nearly all eukaryotic cells contain many (miet uh KAHN dree uh), like the one shown in Figure 16.A mitochondrion is ...
Structures of Plant Cells The organelles described in this section are found in both animal cells and plant cells. However, plan ...
CHAPTER 3 Highlights 67 Key Concepts Study CHAPTER HIGHLIGHTS ZONE Key Terms Section 1 light microscope (51) electron microscope ...
Using Key Terms 1.Cell-membrane proteins do notinclude a.enzymes. c.markers. b.transporters. d.lipids 2.The _____________ houses ...
The diagram below shows an animale cell. Use the diagram and your knowledge of science to answer questions 1–3. 1.Which structur ...
Before You Begin You can see many cell parts with a .In animal cells, the , ,, ,and can be seen. In plant cells, the and can als ...
PARTB:Plant Cells Using forceps, carefully remove a small leaf from near the top of an Elodeasprig. Place the whole leaf in a d ...
Show jumperShow jumper Nerve cells (2220Nerve cells (2220)) ...
CHAPTER 4Cells and Their Environment 73 Quick Review Looking Ahead Answer the following without referring to earlier sections of ...
Section 1 Passive Transport 74 CHAPTER 4Cells and Their Environment Diffusion You constantly interact with your environment, whe ...
Movement of Substances Like these imaginary rubber balls, particles of a substance in a solu- tion also move around randomly. If ...
Osmosis Water molecules are small and can diffuse through the cell membrane, as shown in Figure 2.The diffusion of water through ...
The direction of water movement across the cell membrane depends on the relative concentrations of free water molecules in the c ...
Crossing the Cell Membrane Recall that ions and most polar molecules cannot diffuse across the cell membrane because they cannot ...
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