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53 Cards in this Set
- Front
- Back
What is a pure substance composed of only one type of atom?
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An Element
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What is a combination of two or more atoms held together by chemical bonds?
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A Molecule
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The smallest living entity.
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The Cell
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Draw the Living Matter Totem Pole.
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Cell→Tissues→Organs→Organ Systems→Organism
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What are the 4 Basic Types of Tissues?
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Epithelial Tissue, Connective Tissue, Muscle Tissue, and Nervous Tissue
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Two or more types of tissue organized to perform one or more particular functions aimed primarily towards maintaining homeostasis.
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Organs
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What is the main function of the skeletal system?
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To support and protect
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What does the Muscular System consist of?
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Smooth, Skeleton, and Cardiac Muscle
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Approximately 50% of our body is what kind of muscle tissue?
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Skeletal Muscle Tissue
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What is the integumentary system?
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The skin
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What does the nervous system consist of?
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The brain and spinal cord, the central control centers, and bundles of long, wire-like cells called nerves.
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The cardiovascular system consists of what?
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The heart, blood vessels, lymphatics, and blood.
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What makes up the respiratory system?
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A series of tubes that lead from the mouth and nose into a highly branched network of increasingly smaller tubes that form small dead end air sacs in the substance of the lungs.
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What makes up the digestive system?
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The mouth, esophagus, stomach, small intestine, large intestine, and anus.
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What are the organs of the Urinary System?
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Kidneys, Ureters, Bladder, and Urethra.
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The glands and the hypothalamus that create hormonal stability are found in what organ system?
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The Endocrine System
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The thalamus and the lymphatics that enhance immunity are found in what organ system?
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The Lymphatic System
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How many different types of atoms are there?
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109
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How many atoms are found in the human body?
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26
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All Organic Molecules contain what element?
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Carbon
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Carbon, Hydrogen, and Oxygen, make...
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Carbohydrates
NTK...make up only 1 to 3% of the body but cells depend on them for energy |
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Carbon, Hydrogen, and small amounts of Oxygen make...
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Lipids (fats)
NTK... these are insoluble in water |
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Carbon, Hydrogen, Oxygen, and Nitrogen make...
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Proteins
NTK... most abundant and diverse |
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Molecules that do NOT contain Carbon are...
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Inorganic Molecules
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The processes in which chemical bonds are broken, formed, or rearranged.
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Chemical Reactions
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Decomposition Reactions are...
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Chemical bonds within a larger reactant are broken down to produce two or more smaller substances. (Big→Small)
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Synthesis Reations are...
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new chemical bonds are created to join together two or more atoms or small molecules into a single larger molecule. (Reverse of Decomposition)
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Exchange Reactions are...
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Bonds are both broken and made as parts of the reactants are shuffled areound to form nesw products (Switch)
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Oxidation-Reduction Reactions...
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may involve decomposition, synthesis, or exchange reactions, and result in the change in the energy content of the reacting molecules. ( donating and accepting)
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What 3 structural features do all cells have in common?
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A cell or plasma membrane, a nucleaus that serves as the control or command center of the cell, and the cytoplasm which is the fluid of the cell.
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What are the four general functions of the Cell Membrane?
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Mechanical Barrier, Selective Gate Keeper, Chemical Receptor Sites,and Identify self from non self for immune function
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Characteristics of DNA...
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Contains the instructions for assembling all structural and functional proteins of the cell,duplicates before cell division.
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The fluid that contains the organelles of the cell...
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The cytoplasm
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The gel-like mass containing enzymes, ribosomes, transport vesicles, and various filaments and microtubules is the what?
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Cytosol
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Define the Endoplasmic Reticulum.
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fluid-filled membranous system distributed extensively throughout the cytosol that functions primarily as a protein manufacturer.
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Smooth E.R.=
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a meshwork of tiny interconnected tubules
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Rough E.R=
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projects outward from the smooth ER as stacks of relatively flattened sacs
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Function of Enzymes
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help make chemical reactions happen faster
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Where do you find most of the peroxisomes? and what do they do?
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The kidneys and liver. house several powerful oxidative enzymes and contain most of the cell's catalase
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Golgi Complex=
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The post office.... modify, package, and distribute proteins.
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Lysosomes=
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Recycling center...break down old, damaged, opr dead cell parts or extracellular matierials that have been engulfed by the cell
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Mitochondria=
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Power plants..extract energy from the nutrients in food and transform it into a usable form to energize cellular activities.
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Small, hairlike structures on the cell that moves the material on the cell surface forward.
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Cilia
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Single, long, whiplike appendage used to move the cell through it's environment...
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Flagella
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Microtubules=
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help the cell maintain it's shape...also (1) transports secretory vesicles from one region of the cell to another (2) movement of specicialized cell projections, such as cilia and flagella; and (3) distribution of chromosomes during cell division through formation a mitotic spindle
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Molecular Movement=
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all molecules or ions are in continuous random motion as a result of heat (thermal) energy
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Passive Movements=
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diffusion along concentration gradients (high to low concentration)
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Osmosis=
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movement of water molecules from an area of high concentration of water molecules to an area of low concentration of WATER molecules
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Active movements=
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movements of molecules across cell membranes that require the cells to expend energy
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Carrier Mediated Transport=
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Valves carry things into the cell.. (require special carrier proteins int he membrane to transport small water soluble molecules into or out of the cell
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Vesicular Transport=
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Endocytosis ( vesicles carry into the cell) Exocytosis (vesicles carry out of the cell)
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Main points of glycolysis=
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The set of reactions that convert glucose molecules into pyruvate molecules.
☼ Occurs within the cytosol of the cell ☼Can occur without the presence of oxygen-anaerobic energy production ☼Produces 2 ATP molecules per glucose molecule ☼The glycolytic pathway has a dual role. It degrades glucose to produce ATP and it provides building blocks for the cell. ☼1 ATP moves one muscle fiber ☼There are anywhere from 100,000 to a million muscle fibers in the bicep alone |
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Energy production cycle in the mitochondria (Tricarboxylic acid cycle or Kreb's cycle or Citric Acid Cycle)
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☼This process takes place in the mitochondria of the cell
☼Requires oxygen to proceed-aerobic energy production ☼More efficient-produces 36 ATP molecules per glucose molecule ☼IT also serves as a source of building blocks for biosynthesis |