Exercise 4-1 Organelles and Cell Structures name of the model and the structures
ID: 3508826 • Letter: E
Question
Exercise 4-1 Organelles and Cell Structures name of the model and the structures that you were able to identify on the model inventory in Table 4.2. When you have completed this activity, answer Unit Quiz questions 1 Plasma membrane 6 Rough endoplasmic MATERIALS reticulum Cell models and diagrams Five colors of modeling clay Fetal pigs or other preserved small mammal Methylene blue dye Glass slide (blank) Distilled water Coverslip Light microscope a Phospholipid bilayer b Integral proteins c Peripheral proteins8 Lysosomes d Carbohydrates 7 Golgi apparatus 9Peroxisomes 10 Mitochondria 11 Centrioles 12 Microtubules and O Cell slides (with 2 Nucleus red blood cells, skeletal muscle, and sperm cells) a Nuclear membrane O Wooden applicator b Nuclear pores c Chromatin and sticks O Colored pencils microfilaments 13 Vesicle 14 Microvilli 15 Cilia chromosomes d Nucleolus Most cells in the body are composed of three basic parts- the plasma membrane, cytoplasm, and nucleus oplasm 1. Plasma membrane. The plasma membrane is the outer 4 Ribosomes boundary of the cell. It is composed of a phospholipid bilayer (FOSS-foh-lip-id) with multiple components interspersed throughout. It is a dynamic, fluid structure that acts as a selectively permeable barrier. 5 Smooth endoplasmic reticulum 2. Cytoplasm. The cytoplasm (SY-toh-plazm) is the mate- TABLE 4-2 Cellular Structures Model Inventory Structures Identified rial inside the cell. It consists of three parts: cytosol, the cytoskeleton, and organelles. Cytosol (SY-toh-sahl) is the fluid portion of the cytoplasm and contains water, sol utes, enzymes, and other proteins. The cytoskeleton is a collection of protein filaments including microtubules, actin filaments, and intermediate filaments. Organelles (ohr-gan-ELLZ) are specialized cellular compartments that carry out a variety of functions. Model/Diagram 3. Nucleus. The third component in nearly all cells, the large nucleus (NOO-klee-us), is the cell's biosynthetic center. Within the nucleus we find chromatin (KROH mah-tin; Figure 2.22 in your atlas), a ball-like mass of tightly coiled DNA and proteins, RNA, and a dark staining region called the nucleolus (noo-klee-OH-luss) PROCEDURE 1 Model Inventory Identify the following structures of the cell on models and diagrams, using your textbook and Figures 2.1-2.12 in your lab atlas for reference. As you examine the anatomical models and diagrams, record theExplanation / Answer
We need to complete table 4.2
Fig 3.2 the fluid mosaic model arrangement in plasma membrane.
Structures identified - phospholipids,peripheral proteins,integral proteins,carbohydrates
The question below diagram what is glycocalyx - it is a glycoprotein,glycolipid layer covering that surrounds the cell membrane of certain cells.
Fig 3.1 Typical structures found in body cells
Structures identified - flagella,cilia,ribosomes,peroxisome,centriole,cytoplasm,lysosome,ribosome,smooth endoplasmic reticulum, rough endoplasmic reticulum, mitochondria, microtubules, microfilament, nuclear pore, nuclear envelope, chromatin,nucleolus and golgi apparatus.
What are the three principal parts of cell ? They are plasma membrane , cytoplasm and nucleus.
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