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Answers for these questions can be found here1. List 2 functions of the cell membrane: Questions 2 - 6 Match the following organelles with their function: 2. Mitochondria 3. Vacuoles 4. Cilia 5. Smooth ER 6. Golgi Apparatus A. Movement of the cell B. Lipid synthesis and transport C. "Powerhouse" of the cell, makes ATP D. Storage areas, mainly found in plant cells E. Packages and distributes cellular products 7. The diffusion of H2O across a semi permeable or selectively permeable membrane is termed A. Active transport B. Diffusion C. Osmosis D. Endocytosis 8. Oxygen enters a cell via? a. Diffusion b. Filtration c. Osmosis d. Active transport 9. The term used to describe, "cell eating" is? a. Exocytosis b. Phagocytosis c. Pinocytosis d. Diffusion 10. Which of the following requires energy? a. Diffusion b. Osmosis c. Active transport d. Facilitated diffusion 11. Protein synthesis occurs at the a. Mitochondria b. Lysosomes c. Within the nucleus d. Ribosomes 12. Which of the following is not found in the cell membrane? a. Cholesterol b. Phospholipids c. Proteins d. Galactose e. Nucleic acids 13. What is a cell? a. The largest living units within our bodies. b. Enzymes that "eat" bacteria c. Microscopic fundamental units of all living things. d. All of the above. [edit]Glossary Active Transport: the movement of solutes against a gradient and requires the expenditure of energy Adenosine Triphosphate (ATP): a cell’s source of energy Bulk Flow: the collective movement of substances in the same direction in response to a force Cells: the microscopic fundamental unit that makes up all living things Cell Membrane: boundary of the cell, sometimes called the plasma membrane Cytoplasm: a water-like substance that fills cells. The cytoplasm consists of cytosol and the cellular organelles, except the cell nucleus. The cytosol is made up of water, salts, organic molecules and many enzymes that catalyze reactions. The cytoplasm holds all of the cellular organelles outside of the nucleus, maintains the shape and consistency of the cell, and serves as a storage place for chemical substances. Cytoskeleton: made of threadlike proteins, helps cells maintain their shape and allows cells and their contents to move Dialysis: the diffusion of solutes across a selectively permeable membrane. Most commonly heard of when a patient has had renal failure. In medicine, dialysis is a type of renal replacement therapy which is used to provide an artificial replacement for lost kidney function due to renal failure. It is a life support treatment and does not treat any kidney diseases. Endocrine cells: similar to exocrine cells, but secrete their products directly into the bloodstream instead of through a duct Endocytosis: the capture of a substance outside the cell when the plasma membrane merges to engulf it Endoplasmic Reticulum: organelle that play an important role in making proteins and shuttling cellular products; also involved in metabolisms of fats, and the production of various materials Epithelial Cells: cells that aid in secretion, absorption, protection, trans-cellular transport, sensation detection, and selective permeability Exocrine Cells: cells that secrete products through ducts, such as mucus, sweat, or digestive enzymes Exocytosis: the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell Facilitated Diffusion: the diffusion of solutes through channel proteins in the plasma membrane Golgi Apparatus: "packages" cellular products in sacs called vesicles so that the products can cross the cell membrane and exit the cell Glycolysis: process in which sugars (glucose) are converted to acid Lysosomes: sac-like compartments that contain a number of powerful degradative enzymes Microfilaments: provide mechanical support for the cell, determine the cell shape, and in some cases enable cell movements Microtubules: function as the framework along which organelles and vesicles move within a cell Mitochondria: the organelles that function as the cell "powerhouse", generating ATP Nucleus: controls the cell; houses the genetic material Organelles: bodies embedded in the cytoplasm that serve to physically separate the various metabolic activities that occur within cells Osmosis: the diffusion of water molecules across a selectively permeable membrane from an area of high solute concentration to an area of low solute concentration. Passive Transport: the movement of substances down a concentration gradient and does not require energy use Peroxisomes: organelles in which oxygen is used to oxidize substances, breaking down lipids and detoxifying certain chemicals Phagocytosis: a form of endocytosis wherein large particles are enveloped by the cell membrane of a (usually larger) cell and internalized to form a phagosome, or "food vacuole." In animals, phagocytosis is performed by specialized cells called phagocytes, which serve to remove foreign bodies and thus fight infection. In vertebrates, these include larger macrophages and smaller granulocytes, types of blood cells. Bacteria, dead tissue cells, and small mineral particles are all examples of objects that may be phagocytosed. Pinocytosis: also called cellular drinking, is a form of endocytosis, a process in which small particles are taken in by a cell by splitting into smaller particles. The particles then form small vesicles which subsequently fuse with lysosomes to hydrolyze, or to break down, the particles. This process requires adenosine triphosphate (ATP). Receptor-mediated Endocytosis: occurs when specific molecules in the fluid surrounding the cell bind to specialized receptors in the plasma membrane Red Blood Cells (erythrocytes): cells that collect oxygen in the lungs and deliver it through the blood to the body tissues Ribosomes: play an active role in the complex process of protein synthesis, where they serve as the structures that facilitate the joining of amino acids Simple Diffusion: the net movement of substances from an area of higher concentration to an area of lower concentration Vacuoles: spaces in the cytoplasm that sometimes serve to carry materials to the cell membrane for discharge to the outside of the cell White Blood Cells (leukocytes): produced in the bone marrow and help the body to fight infectious disease and foreign objects in the immune system
12. Which of the following is not found in the cell membrane? a. Cholesterol b. Phospholipids c. Proteins d. Galactose e. Nucleic acids 13. What is a cell? a. The largest living units within our bodies. b. Enzymes that "eat" bacteria c. Microscopic fundamental units of all living things. d. All of the above. [edit]Glossary Active Transport: the movement of solutes against a gradient and requires the expenditure of energy Adenosine Triphosphate (ATP): a cell’s source of energy Bulk Flow: the collective movement of substances in the same direction in response to a force Cells: the microscopic fundamental unit that makes up all living things Cell Membrane: boundary of the cell, sometimes called the plasma membrane Cytoplasm: a water-like substance that fills cells. The cytoplasm consists of cytosol and the cellular organelles, except the cell nucleus. The cytosol is made up of water, salts, organic molecules and many enzymes that catalyze reactions. The cytoplasm holds all of the cellular organelles outside of the nucleus, maintains the shape and consistency of the cell, and serves as a storage place for chemical substances. Cytoskeleton: made of threadlike proteins, helps cells maintain their shape and allows cells and their contents to move Dialysis: the diffusion of solutes across a selectively permeable membrane. Most commonly heard of when a patient has had renal failure. In medicine, dialysis is a type of renal replacement therapy which is used to provide an artificial replacement for lost kidney function due to renal failure. It is a life support treatment and does not treat any kidney diseases. Endocrine cells: similar to exocrine cells, but secrete their products directly into the bloodstream instead of through a duct Endocytosis: the capture of a substance outside the cell when the plasma membrane merges to engulf it Endoplasmic Reticulum: organelle that play an important role in making proteins and shuttling cellular products; also involved in metabolisms of fats, and the production of various materials Epithelial Cells: cells that aid in secretion, absorption, protection, trans-cellular transport, sensation detection, and selective permeability Exocrine Cells: cells that secrete products through ducts, such as mucus, sweat, or digestive enzymes Exocytosis: the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell Facilitated Diffusion: the diffusion of solutes through channel proteins in the plasma membrane Golgi Apparatus: "packages" cellular products in sacs called vesicles so that the products can cross the cell membrane and exit the cell Glycolysis: process in which sugars (glucose) are converted to acid Lysosomes: sac-like compartments that contain a number of powerful degradative enzymes Microfilaments: provide mechanical support for the cell, determine the cell shape, and in some cases enable cell movements Microtubules: function as the framework along which organelles and vesicles move within a cell Mitochondria: the organelles that function as the cell "powerhouse", generating ATP Nucleus: controls the cell; houses the genetic material Organelles: bodies embedded in the cytoplasm that serve to physically separate the various metabolic activities that occur within cells Osmosis: the diffusion of water molecules across a selectively permeable membrane from an area of high solute concentration to an area of low solute concentration. Passive Transport: the movement of substances down a concentration gradient and does not require energy use Peroxisomes: organelles in which oxygen is used to oxidize substances, breaking down lipids and detoxifying certain chemicals Phagocytosis: a form of endocytosis wherein large particles are enveloped by the cell membrane of a (usually larger) cell and internalized to form a phagosome, or "food vacuole." In animals, phagocytosis is performed by specialized cells called phagocytes, which serve to remove foreign bodies and thus fight infection. In vertebrates, these include larger macrophages and smaller granulocytes, types of blood cells. Bacteria, dead tissue cells, and small mineral particles are all examples of objects that may be phagocytosed. Pinocytosis: also called cellular drinking, is a form of endocytosis, a process in which small particles are taken in by a cell by splitting into smaller particles. The particles then form small vesicles which subsequently fuse with lysosomes to hydrolyze, or to break down, the particles. This process requires adenosine triphosphate (ATP). Receptor-mediated Endocytosis: occurs when specific molecules in the fluid surrounding the cell bind to specialized receptors in the plasma membrane Red Blood Cells (erythrocytes): cells that collect oxygen in the lungs and deliver it through the blood to the body tissues Ribosomes: play an active role in the complex process of protein synthesis, where they serve as the structures that facilitate the joining of amino acids Simple Diffusion: the net movement of substances from an area of higher concentration to an area of lower concentration Vacuoles: spaces in the cytoplasm that sometimes serve to carry materials to the cell membrane for discharge to the outside of the cell White Blood Cells (leukocytes): produced in the bone marrow and help the body to fight infectious disease and foreign objects in the immune system
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