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Biology
Chapter 4 Questions
| Question | Answer |
|---|---|
| The cell theory includes different tenets to explain the organization of life. What principles comprise the cell theory? | 1. All organisms are composed of one/ more cells &the life processes of metabolism & heredity occur within these cells. 2. Cells are the smallest living things, the basic units of organization of all organisms. |
| Continuation answer of above question | 3. Cells arise only by division by a previously existing cell. |
| Basic structures in all cells All cells exhibit basic structural similiarities. The general plan of cellular organization varies between different organisms but despite these modifications all cells resemble one another in certain fundamental ways. | SEE BELOW FOR MATCH |
| 1. NUCLEUS 2. NUCLEOID 3. PLASMA MEMBRANE 4. CYTOPLASM | 1. CONTAINS EUKARYOTIC DNA 2. CONTAINS PROKARYOTIC DNA 3. SEPARATES CONTENS OF CELL FROM SURROUNDINGS AND IS MADE UP OF PHOSPHOLIPID BILAYER 4. SEMIFLUID MATRIX AND CONTAINS SUGARS, SALTS AND AMINO ACIDS |
| Eukaryotic and prokaryotic cells: Match each cellular compoent with the correct cell type, prokaryote,eukaryote, or both | 1. Prokaryote-1. has a nucleoid 2. Eukaryote- 1. has a nucleus 2. as organelles 3. Both Prokaryotes and eukaryotes-1. has a cytoplasm 2. has a cell membrane 3. contains ribosomes |
| Endomembrane system. Match structure in diagram. | Page 71 figure 4.12 Study this figure. |
| Functions of the endomembrane system: 1. Nucleus 2. Endoplasmic reticulum | 1. Contains instructions for protein synthesis & cell reproduction, contains genetic information 2. intracellular compartment forms transport vesicles, participates in lipids synthesis and synthesis of membranes or secreted proteins. |
| 3. Goigi appartus 4. Lysosomes | 3. Packages proteins for export from cells and forms secretory vesicle 4. Digests worn-out organelles and cell debris, digest material taken up by endocytosis |
| 5. Vacuole 6. Peroxisone | 5. Carries out a variety of functions including regulating water level in plant cells. 6. Involved in the breakdown of fats and contain enzyme catalase. |
| Protein processing pathway. Figure 4.12 Page 71 Look at 1,2,3 | Figure 4.12 Page 71 |
| Comparison of mitochondria and chloroplasts: Match 1. Mitochonidria 2. Chloroplasts 3. Both organelles | 1.metabolize molecules to generate ATP and site of oxidative metabolism 2.Use light to generate ATP and site of photosynthesis 3. contains two membranes and DNA, arose by endosymbiosis |
| How did mitochondria and chloroplasts most likely arise? | |
| Cytoskeleton Fibers: Match each function with the correct cytoskeletal struture. 1. Microtubulues 2.Actin 3. Intermediate Filaments | 1. used to move vesicles with cells & made of dimers of alpha-& beta-tubulins. 2.used to move cells and also called microfilaments. 3. a strong structual protein within cells, no polymerization once formed, prevent excessive streching of cells. |
| Type of cell movement: Match each structual element or cell with the correct type of cell movement. 1.Crawl 2. Swim | 1. Actin, White Blood Cells, Myosin 2. Flagella, Cilia, Flagellated Bacteria |
Created by:
458Jenna