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66 Cards in this Set
- Front
- Back
What five characteristics classify organisms as "Living"?
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Organized, Acquire Materials and Energy, Respond to their environment, Reproduce and Develop, Adapt.
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What is the basic organizational structure for life?
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Cell, Tissue, Organs, Organ Systems, and The Body.
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Describe in order the complete organizatinal structure for both animals and plants.
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Small Molecules, Large Molecules, Cells, Tissues, Organs, Oxygen System, Complex Organism.
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What is an adaptation?
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Genetic or behavior modifications that make an organism better suitedfor its environment.
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Ecology continues the organization beyond the body. What are the levels of Ecology?
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Individual, Population, Community, Ecosystem, Biosphere.
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Life is both uniform and diverse. Explain what this means.
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Uniformity reflects a common ancestor, and diversity has arisen through evolution as species become more and more adapted to their environments.
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What are the three domains of Taxonomy?
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Archaea, Bacteria, and Eukarya.
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What is a similar characteristic between Archaea and Bacteria?
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They are both comprised of prokaryotes (meaning before nucleus)
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Eukarya consists of eukaryotes (with nucleus). What are the four groups?
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Fungi, Plantae, Animalia, and Protista.
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What are the steps for the scientific method?
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Obervation/Question, Hypothesis, Prediction, Experiment, Analysis, and Conclusion.
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Atoms are composed of what three particles?
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Protons(positive), Neutrons(neutral), and Electrons(negative)
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Protons and Neutrons are located where in an atom?
Where are electrons located? |
Protons and neutrons are in the Nucleus. Found in the orbitals surrounding the nucleus.
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What is the difference between Atomic Number and Atomic Mass?
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Atomic number is the number of protons in the nucleus. Atomic Mass is the overall weight of the protons and neutrons.
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What is an Isotope?
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Atoms of the same element that have different atomic mass numbers. (For example Carbon 12, 13, and 14.)
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What is an Ion? What is the difference between an Cation and an Anion?
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An Ion is a charged particle. A Cation is a positively charged ion because it has more protons than electrons. An Anion is a negatively charged ion because it has more electrons than protons.
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What is a compound? Give an example.
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A compound is a combination of two or more elements. An example is table salt. Which is comprised of Sodium a soft grey metal and Chloride a gas. Mixed is Sodium Chloride.
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How many electrons can be held if the first three outer shells of an atom?
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Inner shell is two. Second shell is 8. Third shell is 8.
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Atoms are most "happy" when?
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When their outer shell is full.
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What are the three types of Bonds?
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In order from strongest to weakest: Covalent (share electrons), Ionic (steal an electron) and Hydrogen (a hydrogen atom that is covalently bonded to a electronegative atom is attracted to another electronegative atom).
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What is the difference between Reduction Reaction and Oxidation Reaction? What is a Redox Reaction?
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Reducton Reaction is the addition of electrons. The Oxidation Reaction is the removal of electrons. A Redox Reaction is when one compound is oxidated and the other one reduced is charge not electrons.
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What four elements make up 96% of living matter?
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Hydrogen, Oxygen, Nitrogen, and Carbon. (HONC)
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Why is water ideal of life? List 6 reason.
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Its polar, has hydrogen bonds between molecules, has a high specific heat (takes a lot of energy to change temp.), has a high heat of vaporization, less dense as solid (very important especially with the ocean), and is a good solvent.
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As a result of Hydrogen bonding water molecules can do what two things? Also, Define Capillary Action.
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Hold on to each other (cohesion), and holds on to other surfaces (adhesion). Capillary Action is when water will move up a tube on its own. Very important for blood flow and how a plant receives its nutrition.
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Define Hydrophillic and Hydrophobic.
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Hydrophillic is a compound that "likes" water and will dissolve it it for example salt or sugar. Hydrophobic is a compound that is is "afraid" of water and won't dissolve like fats and oils.
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Most elements are found in an ionic state. Describe what an acid and a base will release when exposed o water.
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An acid will release protons in water. A base will release hydroxide ions.
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What is the function of a buffer?
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A buffer accepts or releases protons as necessary to keep pH constant. Most biological buffers are a combination of a weak acid and a weak base.
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The pH scale ranges from 0 to 14. What is 0, 7, and 14?
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0 is the strongest acid (example battery acid), 7 is neutral (example pure water), 14 is the strongest base (example drain cleaner)
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Cells requies a pH of 6-8. How is this regulated in a human body?
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Breathing. CO2 regulates the pH level of blood.
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What is a Macromolecule?
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A macromolecule is a Polymer made up of many small Monomers. (Macro=Large, Poly=Many, and Mono=One)
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A compound is considered Organic if it contains carbon. What are the four main Organic Molecules?
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Carbohydrates, Lipids, Proteins, Nucleic Acid.
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Carbohydrates are made up of sugars. What is the main monomer?
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Glucose which is a six sided sugar.
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Carbohydrates polymers are made from sugar monomers. What are the three main biological carbohydrate polymers made from glucose?
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Starch (plant), Cellulose (plant), and Glycogen (animal)
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Starch is a food storage molecule that can be broken down for what?
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Energy.
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Cellulose is a polymer that is used as structural support of a cell wall. Humans cannot digest cellulose give an example of one kind.
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Fiber.
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Glycogen is a stored energy source that is found where in the human body?
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The liver and muscles.
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What are the organic compound Lipids also known as?
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Fats, which are hydrophobic.
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What are the three forms of Lipids?
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Fatty Acids (long chains of Carbon and hydrogen) can be saturated and unsaturated, Triglycerides (1 glycerol and 3 fatty acids) used to store energy, and Phospholipids (1 glycerol, 2 fatty acids, and phosphate) main component of membranes.
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What is unique about Phospholipids, so that they can be used to form cell membranes?
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They have a hydrophobic bottom and a hydrophillic top, which creates a barrier.
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The Organic compound Protein are polymers constructed of monomers called what?
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Amino Acid.
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What is denaturation of a protein?
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It is the change in the shapeof a protein usually caused by the loss of function caused by changes in environment. Such as pH, temp., and salt concentration.
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Nucleic Acids are made up from Polymers of what?
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Nucleotides.
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List two examples of Nucleic Acids.
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DNA, RNA
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What are the five Nucleotides in DNA and RNA?
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Adenine (A), Guanine (G), Thymine (T), Cytosine (C), and Uracil (U).
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What is the difference in nucleotide make up between DNA and RNA?
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DNA consists of (AGTC) ALWAYS in that order. RNA consists of (ACUC). A & T, or A & U always bond. and G & C always bond.
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DNA and RNA provide the instructions for a _____ to perform its job in the cell.
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Protein.
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What are the three aspects to the cell theory?
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All organisms are composed of cells, cells are the smallest living things, and cells arise only from pre-existing cells.
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What are the two instruments used to see cells?
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Light Microscope, and Electron Microscope.
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What is the difference between Prokaryotic and Eukaryotic cells? Give an example of each.
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Prokaryotic cells have one compartment (Bacteria), and Eukaryotic cells have many (Animal or Plant Cell).
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What is the purpose of the cell membrane?
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To separate the different compartments.
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What are the three things that plant cells have that animal cell don't?
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A cell wall, Vacoule, and Chloroplast (used for photosynthesis)
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What is the function of the Nucleus?
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It is the Brain. Stores most of the DNA and has a double membrane.
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What is the Endoplasmic Reticulum?
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There are two types the Smooth and the Rough ER. The Smooth ER makes Lipids. The Rough ER makes Proteins, and is covered with Ribosomes.
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What is the function of a Ribosome?
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It produces Proteins using RNA. Can be found on the Rough ER or floating through the cytosol.
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Found only in plants what is the purpse of Chloroplasts?
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Contains some DNA and where photosynthesis occurs.
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What does the Mitochondria do?
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It is the power plant and breaks down sugar into chemical energy.
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What is the purpose of the Golgi Apparatus?
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It is the Packaging and Shipping area for proteins to either get modified or just put a shipping label on it and send it to its destination.
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Found only in animal cells what do Lysosomes do?
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It is the stomach. Digests food, pathogens, and old organelles as needed.
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Found only in plant cell what is the purpose of the Vacuole?
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Contains 90% of the cells water and also where waste is stored. If a plant goes unwatered, the Vacuole will sag and cause the plant to droop.
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What is the function of the cell membrane?
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It is the skin. Keeps everything in the cell together and also everything must cross it in order to get inside the cell.
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What is Cytoplasm?
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It is everything from the cell membrane to the nuclear membrane. The liquid and the organelles.
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What is the Cytoskeleton?
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Network of Protein fibers throughout the cell. For support and movement.
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What are the three types of Cytoskelteon?
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Microtubules (main support), Microfilaments (movement), and Intermediate Filaments (Glue, holds everything together)
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Found only in plant cells what is the function of the cell wall?
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Support of the plant along with the vacuole, a barrier.
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Describe Extra Cellular Matrix.
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Animal version of a cell wall. Can be used for signaling between cells. A Blood Cell is an example of weak matrix. A Nerve Cell is an example of a strong matrix.
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Found only in plants what is thePlasmodesmata.
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It allow for communication betweens cells to occur. It links all cells together, and is a source of vulernerability.
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What are the three different points of contact for an animal cell?
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Tight Junctions, Desmosomes, and Gap Junctions. (Tight Junctions make no fluid transport possilbe, and Desmosomes make fluid transport possible, Gap Junctions (Molecular Transport possible).
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