Concept explainers
To review:
The abundance of various organelles in the following cells:
The adrenal gland cells that make steroid hormone, the white blood cells, the liver cells, the muscle cells, the mucous cells, the epithelial cells in the skin, and the kidney tubule cells.
Introduction:
The cellular organelles perform various functions that are necessary to sustain life. The abundance of organelles in cells vary from cell to cell depending upon their requirements. The function of some organelles is regulated in a chain form such as the nucleus, the endoplasmic reticulum, the Golgi apparatus, and the vesicles perform in a series. The other organelles perform functions independently in the cytoplasm.
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Chapter 2 Solutions
Human Anatomy Laboratory Manual With Cat Dissections (9th Edition)
- Describe fats and oils, and what makes triglycerides solid (fats) or liquid (oils). List examples of lipids except fats and oils (triglycerides). What is the main material of the plasma membrane? (draw a schematic figure) Describe micelles and liposomes (if needed, draw a figure). The plasma membrane is ___________permeable. Describe how an active transport works (with an example _________ channel). In the Na+/K+ channel, how many ions move across the membrane?arrow_forwardTumors associated with breast cancer usually arise from either epithelial cells or fibroblasts. Because optimal treatment differs depending on the cellular origin of the tumor, it’s important for doctors to determine which cell type is present in a tumor. Unfortunately, the distinctive morphology of epithelial cells is lost when they become cancerous, so this determination cannot be made based on cell shape alone. How might determination of the class(es) of intermediate filaments present in tumor cells aid a doctor in figuring out which cell type is involved in the tumor?arrow_forward"Tight junctions perform two distinct functions: they seal the space between cells to restrict paracellular flow and they fence off plasma membrane domains to prevent the mixing of apical and basolateral membrane proteins" is true or false.arrow_forward
- Write a short description for each of the cells listed below that would help a student recognize that cell type from a picture or a microscope view. For each description, use five words or less. (Note that you will need to think about the most distinguishing and important features of the cells to describe them in so few words.) 1. squamous epithelial cells 2. red blood cells 3. white blood cells 4. skeletal muscle cells 5. cartilage cells 6. nerve cellsarrow_forwardMatch the following cell structures with their descriptions. 1. Fibers of the cytoskeleton that attach to chromosomes and move them during mitosis 2. Cell junctions that seal cells so tightly together that materials cannot pass between the cells Cilia Intermediate filaments 3. Cell surface appendages that contain microtubules and beat to move substances across the surface Tight junctions of a cell 4. The network of many types of protein fibers that gives shape to the cell and anchors the organelles Microtubules Desmosomes 5. Cell junctions that link the cytoskeleton of adjacent cells in order to prevent the cells from being pulled apart Microfilaments/actin filaments 6. Fibers of the cytoskeleton that allow cells such as amoebae to crawl aroundarrow_forwardEukaryotic cells contain many compartmentalized organelles. Label the organelles in this eukaryotic cell.arrow_forward
- Identify the cell organelles labeled in these artist's renderings of TEM's. List them on the lines provided.arrow_forwardFibroblasts are motile cells that “creep” about in the connective tissue of the body where they play a number of roles, including secretion of the extracellular matrix and initiating certain wound healing events. These cells do not usually have microvilli nor do they express the actin-binding protein villin; both of these properties are characteristic of certain epithelial cells, such as those lining the intestine and kidneys. Remarkably enough, however, if one artificially engineers fibroblast cells to produce the villin protein, microvilli form on the fibroblasts. Given what you know about the function of villin, why might this striking change in cell morphology occur?arrow_forwardList the three types of filaments associated with the cytoskeleton. Identify the structures in cells that are composed of microtubules.arrow_forward
- Intermediate filaments (IFs) function to provide mechanical strength to the cell and for internal organization of the cells. The intermediate filament _______________ plays a key role in connecting epithelial cells to the extracellular matrix. The IF binding protein________ plays key role in connecting the IFs in the nucleus with the cytoskeleton in the cytoplasm to help position the nucleus. keratin, SUN-domain protein SUN-domain proteins, lamin lamin, keratin SUN-domain proteins, keratin lamin, SUN-domain protein keratin, laminarrow_forwardIs tricellular junction important in cell junction specification? https://en.wikipedia.org/wiki/Cell_junction#:~:text=Cell%20junctions%20(or%20intercellular%20bridges,the%20extracellular%20matrix%20in%20animals.arrow_forwardChoose TWO of the cell structures from the list provided. Explain the general appearance of each briefly and the specific function in the cell. Choose from: Nucleus, Rough Endoplasmic Reticulum, Smooth Endoplasmic Reticulum, Lysosomes, Golgi apparatus, mitochondriaarrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
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