1. Chapter 2: Cells and Tissues
Lesson 2.2
Cells

2. Cells anatomy and physiology of a cell DNA, RNA, and proteins
life cycle of a cell

3. Anatomy and Physiology of Cells
plasma membrane (phospholipid bilayer)
regulates in and out movement
cytoplasm
liquid and organelles inside cell
nucleus
control center of cell

4. Plasma Membrane Components
phospholipid bilayer
cholesterol
channel proteins
aquaporins
glycoproteins

5. Membrane Transport passive active no energy required diffusion
requires energy
sodium-potassium pump

6. Cytoskeleton strengthens and shapes the cell fiber types
microfilaments
intermediate filaments
microtubules

7. Organelles in the Cytoskeleton
microvilli
increase surface area
cilia
move mucus
centrioles
assist in cell division

8. Review and Assessment
Match these words with 1–4 below: nucleus, cytoskeleton, cilia, passive.
1. no energy required
2. control center of cell
3. strengthens and shapes cell
4. moves mucus

9. Mitochondria and Energy
powerhouses of cell
energy transformation
glycolysis
citric acid cycle
make ATP

10. Golgi Apparatus makes vesicles makes lysosomes
move materials out of cell
makes lysosomes
contain digestive enzymes

11. Ribosomes and Endoplasmic Reticulum
make polypeptides
endoplasmic reticulum
network of membranes
smooth
rough

12. The Nucleus enclosed by nuclear envelope contains DNA nucleolus
wrapped around histones
nucleolus
makes ribosomal RNA

13. DNA, RNA, and Proteins
DNA makes RNA
RNA makes proteins

14. Life Cycle of a Cell interphase the mitotic phase mitosis cytokinesis
prophase
metaphase
anaphase
telophase
cytokinesis

15. Mitosis prophase metaphase anaphase telophase
chromatin condenses into chromosomes, cell membrane breaks down
metaphase
chromosomes line up in the center of the cell
anaphase
centromeres are cut in half, sister chromatids pull toward centrioles
telophase
chromosomes “decondense,” new nuclear membrane forms

16. Mitosis

17. Cytokinesis
the cytoplasm divides into two parts, the final step of cell division

18. Cancer cancer cell grows too much grows where it does not belong
does not die when it should

19. Review and Assessment
Fill in the blanks below with: mitochondria, metaphase, or ribosome. 1.The _______________ is the powerhouse of the cell. 2.The _______________ makes polypeptides. 3. _______________ is a stage of mitosis. 4. DNA is wrapped around _______________.