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66 Cards in this Set

  • Front
  • Back
What five characteristics classify organisms as "Living"?
Organized, Acquire Materials and Energy, Respond to their environment, Reproduce and Develop, Adapt.
What is the basic organizational structure for life?
Cell, Tissue, Organs, Organ Systems, and The Body.
Describe in order the complete organizatinal structure for both animals and plants.
Small Molecules, Large Molecules, Cells, Tissues, Organs, Oxygen System, Complex Organism.
What is an adaptation?
Genetic or behavior modifications that make an organism better suitedfor its environment.
Ecology continues the organization beyond the body. What are the levels of Ecology?
Individual, Population, Community, Ecosystem, Biosphere.
Life is both uniform and diverse. Explain what this means.
Uniformity reflects a common ancestor, and diversity has arisen through evolution as species become more and more adapted to their environments.
What are the three domains of Taxonomy?
Archaea, Bacteria, and Eukarya.
What is a similar characteristic between Archaea and Bacteria?
They are both comprised of prokaryotes (meaning before nucleus)
Eukarya consists of eukaryotes (with nucleus). What are the four groups?
Fungi, Plantae, Animalia, and Protista.
What are the steps for the scientific method?
Obervation/Question, Hypothesis, Prediction, Experiment, Analysis, and Conclusion.
Atoms are composed of what three particles?
Protons(positive), Neutrons(neutral), and Electrons(negative)
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.
What is the difference between Atomic Number and Atomic Mass?
Atomic number is the number of protons in the nucleus. Atomic Mass is the overall weight of the protons and neutrons.
What is an Isotope?
Atoms of the same element that have different atomic mass numbers. (For example Carbon 12, 13, and 14.)
What is an Ion? What is the difference between an Cation and an Anion?
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.
What is a compound? Give an example.
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.
How many electrons can be held if the first three outer shells of an atom?
Inner shell is two. Second shell is 8. Third shell is 8.
Atoms are most "happy" when?
When their outer shell is full.
What are the three types of Bonds?
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).
What is the difference between Reduction Reaction and Oxidation Reaction? What is a Redox Reaction?
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.
What four elements make up 96% of living matter?
Hydrogen, Oxygen, Nitrogen, and Carbon. (HONC)
Why is water ideal of life? List 6 reason.
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.
As a result of Hydrogen bonding water molecules can do what two things? Also, Define Capillary Action.
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.
Define Hydrophillic and Hydrophobic.
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.
Most elements are found in an ionic state. Describe what an acid and a base will release when exposed o water.
An acid will release protons in water. A base will release hydroxide ions.
What is the function of a buffer?
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.
The pH scale ranges from 0 to 14. What is 0, 7, and 14?
0 is the strongest acid (example battery acid), 7 is neutral (example pure water), 14 is the strongest base (example drain cleaner)
Cells requies a pH of 6-8. How is this regulated in a human body?
Breathing. CO2 regulates the pH level of blood.
What is a Macromolecule?
A macromolecule is a Polymer made up of many small Monomers. (Macro=Large, Poly=Many, and Mono=One)
A compound is considered Organic if it contains carbon. What are the four main Organic Molecules?
Carbohydrates, Lipids, Proteins, Nucleic Acid.
Carbohydrates are made up of sugars. What is the main monomer?
Glucose which is a six sided sugar.
Carbohydrates polymers are made from sugar monomers. What are the three main biological carbohydrate polymers made from glucose?
Starch (plant), Cellulose (plant), and Glycogen (animal)
Starch is a food storage molecule that can be broken down for what?
Energy.
Cellulose is a polymer that is used as structural support of a cell wall. Humans cannot digest cellulose give an example of one kind.
Fiber.
Glycogen is a stored energy source that is found where in the human body?
The liver and muscles.
What are the organic compound Lipids also known as?
Fats, which are hydrophobic.
What are the three forms of Lipids?
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.
What is unique about Phospholipids, so that they can be used to form cell membranes?
They have a hydrophobic bottom and a hydrophillic top, which creates a barrier.
The Organic compound Protein are polymers constructed of monomers called what?
Amino Acid.
What is denaturation of a protein?
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.
Nucleic Acids are made up from Polymers of what?
Nucleotides.
List two examples of Nucleic Acids.
DNA, RNA
What are the five Nucleotides in DNA and RNA?
Adenine (A), Guanine (G), Thymine (T), Cytosine (C), and Uracil (U).
What is the difference in nucleotide make up between DNA and RNA?
DNA consists of (AGTC) ALWAYS in that order. RNA consists of (ACUC). A & T, or A & U always bond. and G & C always bond.
DNA and RNA provide the instructions for a _____ to perform its job in the cell.
Protein.
What are the three aspects to the cell theory?
All organisms are composed of cells, cells are the smallest living things, and cells arise only from pre-existing cells.
What are the two instruments used to see cells?
Light Microscope, and Electron Microscope.
What is the difference between Prokaryotic and Eukaryotic cells? Give an example of each.
Prokaryotic cells have one compartment (Bacteria), and Eukaryotic cells have many (Animal or Plant Cell).
What is the purpose of the cell membrane?
To separate the different compartments.
What are the three things that plant cells have that animal cell don't?
A cell wall, Vacoule, and Chloroplast (used for photosynthesis)
What is the function of the Nucleus?
It is the Brain. Stores most of the DNA and has a double membrane.
What is the Endoplasmic Reticulum?
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.
What is the function of a Ribosome?
It produces Proteins using RNA. Can be found on the Rough ER or floating through the cytosol.
Found only in plants what is the purpse of Chloroplasts?
Contains some DNA and where photosynthesis occurs.
What does the Mitochondria do?
It is the power plant and breaks down sugar into chemical energy.
What is the purpose of the Golgi Apparatus?
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.
Found only in animal cells what do Lysosomes do?
It is the stomach. Digests food, pathogens, and old organelles as needed.
Found only in plant cell what is the purpose of the Vacuole?
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.
What is the function of the cell membrane?
It is the skin. Keeps everything in the cell together and also everything must cross it in order to get inside the cell.
What is Cytoplasm?
It is everything from the cell membrane to the nuclear membrane. The liquid and the organelles.
What is the Cytoskeleton?
Network of Protein fibers throughout the cell. For support and movement.
What are the three types of Cytoskelteon?
Microtubules (main support), Microfilaments (movement), and Intermediate Filaments (Glue, holds everything together)
Found only in plant cells what is the function of the cell wall?
Support of the plant along with the vacuole, a barrier.
Describe Extra Cellular Matrix.
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.
Found only in plants what is thePlasmodesmata.
It allow for communication betweens cells to occur. It links all cells together, and is a source of vulernerability.
What are the three different points of contact for an animal cell?
Tight Junctions, Desmosomes, and Gap Junctions. (Tight Junctions make no fluid transport possilbe, and Desmosomes make fluid transport possible, Gap Junctions (Molecular Transport possible).