CSP15 Question 1: Multiple-choice questions 1.1. The cell membrane is important for all the following reasons except 1. it determines what substances enter and exit the cell. 2. it separates the cell's internal fluid and the surrounding extracellular fluid 3. it acts as a site for cell-to-cell interaction and recognition. 4. it is an essential site for DNA transcription.

CSP15 Question 1: Multiple-choice questions 1.1. The cell membrane is important for all the following reasons except 1. it determines what substances enter and exit the cell. 2. it separates the cell's internal fluid and the surrounding extracellular fluid 3. it acts as a site for cell-to-cell interaction and recognition. 4. it is an essential site for DNA transcription.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter5: Structure And Function Of Plasma Membranes

Section: Chapter Questions

Problem 17RQ: In what important way does receptor-mediated endocytosis differ from phagocytosis? It transports...

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Identification: 1. A hard material in the cellulose matrix of the cell wall important for support and protection from microorganisms. 2. The cementing substance of the middle lamella that functions to “glues” cells together to form tissues. 3. The cell wall component present in mature cells primarily functioning for support. 4. These are gaps in the cell wall where cytoplasm of one cell extends to neighbouring cells. 5. The membrane lipid component that gives fluidity to the plasma membrane. 6. The membrane protein component that serves as channels and ion pumps within the cell membrane. 7. A group of protein compounds that serves as chemical catalyst within the cytoplasm. 8. It refers to the single membrane enclosing the vacuole. 9. Communication between the cytoplasm and the nucleoplasm is provided for by this part of the nucleus? 10. Which kind of endoplasmic reticulum is most abundant in epidermal cells producing waxes/cutin. 11. It refers to the vesicle…
In what important way does receptor-mediated endocytosis differ from phagocytosis? It transports only small amounts of fluid It does not involve the pinching off of membrane It brings in only a specifically targeted substance It brings substances into the cell, while phagocytosis removes substances.
Which of the following imaging techniques would be best to use to study the uptake of nutrients by rapidly multiplying cancer cells? CT MRI PET ultrasonography
Which type of stem cell gives rise to red and white blood cells? endothelial epithelial hematopoietic mesenchymal
i. Why are carbon, nitrogen, oxygen, and hydrogen the most abundant elements in living matter and, therefore, considered macronutrients? ii. Explain the Fluid Mosaic membrane model of plasma membrane structure. iii. What is the difference between simple diffusion, facilitated diffusion, and active transport? :=
2) Explain how the following cell transport systems work moving materials around inside the cell and other functions. Focus on structure and function, and Include how energy is used to accomplish these movements. A)Tubulin/Kinesin B)Actin/Myosin
4 IIII I 5 IIIII 6 Which statement is accurate concerning simple diffusion and facilitated diffusion? In facilitated diffusion, molecules only move with the aid of a protein in the membrane. In simple diffusion, molecules move down the concentration gradient but in facilitated diffusion molecules move up the concentration gradient. Simple diffusion is passive but facilitated diffusion is an active process that uses energy. Simple diffusion requires molecules to move through special doorways in the cell membrane. étv A O Aa
Determine whether the statement is true or false. 1. Membrane proteins may act as transporter, channel, receptors and cell identity markers. 2. Nucleolus contain digestive enzyme that aid cell renewal. 3. The vacuoles in animals are more common and bigger than with plants and bacteria. 4. Chlorophyll is the solar energy-capturing organelle derived from photosynthetic bacteria. 5. Proteins embedded on the plasma membrane may also transport some molecules to and outside the cell. 6. Nuclear envelope is a double membrane with pores that separates the nucleus from the rest of the cell. 7. Eukaryotic cells are considered the first cell type on Earth and are the cell type of bacteria and archaea. 8. Cell wall surrounds plasma membrane which is common among plants, fungi and many protists. 9. Ribosomes direct the synthesis of RNA. 10. The cytoskeleton is a network of interconnected membranes that helps move substances within the cell.
Match 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 around
35: Which of the following statements makes it necessary for animal cells, although they have no cell walls, to have intercellular junctions? Cell-to-cell communication requires physical attachment of one cell to another. Maintenance of connective tissue shape requires cells to adhere to one another. Cell membranes do not distinguish the types of ions and molecules passing through them. Large molecules, especially proteins, do not readily get through one, much less two adjacent cell membranes. 21: Living things are made up of cells. Cells are organized at different levels to form very complex living organisms like your body. Each level has a specific role or job to perform. Which of the following correctly describes the order of organization from the simplest to the most complex? tissues, cells, organs, organisms, organ systems cells, tissues, organs, organ systems, organisms organs, organ systems, organisms, cells, tissues organisms,…