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49 Cards in this Set
- Front
- Back
Define what a cell is technically. |
small membrane enclosed units filled with componets and can reproduce thereselves. |
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What are the rules of the Cell Theory |
All living things are made up of cells. All cells come from cells |
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What is Cell Biology |
Study of cells structure, function, and behavior |
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How big is an typical bacterial and neural cell |
A typical bacterial cell is about 2-5 micrometers. A typical neural cell is about 700 micrometers accross. |
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Proteins Name all 5 functions |
Chemical Catalysts, Structural Support, Molecular Motors, Defense, Storage. |
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How do proteins act in Defense |
Immunoglobulin proteins produce Antibodies in response to foreign cells. By binding to target molecule inactivating it or marking it for destruction |
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How do proteins act as chemical catalyts |
Enzymes are a protein that speed up chemical reactions |
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How do proteins give structural support. |
As in the proteins in the connective tissue like collagen and elastin |
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How do proteins act as molecular motors |
Motor proteins carry membrane enclosed organelles and cause cytoskeleton filaments to slide. |
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How do proteins function in storage |
Storage proteins store metal ions and amino acids used by the organism, |
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What are the protein building blocks |
Amino Acids |
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Describe Genome |
Provides instructions for all cellular activities and behaviors. It is all of the DNA in a cell. Genetic Content or DNA controls proteins. |
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What was the first microscope and when was it invented |
Light Microscope visible light is used to illuminate the specimen to view. Invented in the 1600s. |
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Describe the Electron Microscope and when was it invented |
Beams of electrons was used to illuminate the specimen. Allowing to see more detail. Invented in the 1930s |
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Fundamental tools of Cell Biology |
Electron and Light Microscope |
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Light Microscopy allows you to visualize? |
Cell shape some structural componets and activities, and extracellular matrix |
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Name all of the types of Light Microscopes |
Bright-ield, Phase-Contrast, Interference-Contrast, Fluorescence, Confocal. |
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Describe the Bright-field Microscope. |
Light shined directly on the specimen, Dyes often required |
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Describe the Phase-Contrast Microscope |
The bending of light as it passes through the specimen has an advantage. No dye required. Viewing of living cells easily achieved. |
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Describe the Interference-Contrast Microscope? |
Similar to phase-Contrast Microscope |
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Describe Fluorescence Microscopy |
Fluorescent dyes or tags are added to cell and illuminated with specific wavelengths of light. |
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Describe Confocal Microscopy |
More defined resolotion than Fluorescence Microscopy. Lasers illuminate single planes of a specimen at a time to generate a final image. |
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Types of Electron Microscope |
Transmission and Scanning |
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Describe the Transmission Electron Microscope |
Good for viewing the inside of the cell. Specimen must be fixed in plastic, sliced, and stained with heavy metals. |
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Describe the Scanning Electron Microscope |
Great for making 3-D images of the outside of the specimen. Outside of the specimen is coated with heavy metals and the electrons are bounced off specimen and focused by magnets. |
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Bacteria Vs Archaea |
Similar in physical/outward appearance but chemicallly and genetically quite distinct, |
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In an Animal or plant cell what is the nucleus surrounded by? |
double membrane known as the nuclear envelope. |
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Mitochondria membrane and DNA |
Double membrane with inner membrane making folds into the interior of the organelle. Makes and houses its own DNA. |
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Carbon can form chains or rings. Has the ability to form how many covalent bonds. |
Both and 4. |
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Chemical groups are |
Added to organic compounds and are responsible for much of the reactions that organic molecules are involved in. |
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What are the 4 building blocks in cells. |
Monosaccharides for polysaccharides. Fatty acids for lipds. Amino acids for proteins. Nucleotides for Nucleic Acids. |
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How are monomers joined and removed from Polymers. |
Joined by condensation and removed by hydrolysis reactions. |
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Functions of sugar |
Energy storage : Glucose in animals and Starch in plants. Structural support in plants as cellulose and chitin in fungi. |
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Fatty acid tails that are straight and bent |
Straight= saturated Bent= Unsaturated |
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How many amino acids can be linked together |
20 |
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Monomers of Dna and RnA |
ATP |
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How are monomers added together |
Enzymes and repetitive reactions |
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Macromolecules and Non covalent bonds |
Non covalent bonds give macromolecules or specifies its shape. And binds to other molecules |
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Enzymes can harvest energy to build order from |
disorder |
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Define Entropy |
Measure of disorder example is heat |
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First law of Thermodynamics |
Energy is niether created or destroyed |
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Cells accomplish order through what metabolic reactions, |
Photosynthesis and Cellular Respiration |
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How do energy enter living systems |
Photosynthesis |
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How do cells get the energy from Photosynthesis |
By oxidiziding the organic molecules from photosynthesis |
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define free energy |
Energy required to do work or drive chemical reaction |
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Chemical reactions only occur in the direction that results in |
Release of free energy and increase of entropy |
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Define Activation Energy |
Energetically favorable/spontaneous reactions that require an input of energy to proceed, |
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Reactants need energy boosts in order to |
Be converted into products |
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Why do enzymes and protein catalysts lower activation energy barriers |
To facilitate reactions |