Cell Biology 1-3
Hypothesis | A tentative explanation that can be tested and is falsifiable |
Cell theory |
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Transmission electron microscope (TEM) | Microscope that passes an electron beam through very thin sections stained with metal atoms and primarily used to study the internal structure of cells. (sliced cross section) |
Scanning electron microscope (SEM) | A microscope that uses an electron beam to scan the surface of a sample, coated with metal atoms to study topography. (3D image) |
Polymers | A long chain molecule consisting of repeating monomers connected by covalent bonds. |
Protein | A long chain polymer that has been folded into a specific shape for a certain function. (biologically functional molecule consisting of one or more polypeptides folded into a 3D structure) |
Polypeptide | A linear long chain molecule made up of amino acids with no specific function |
Protein vs polypeptide | Protein = folded structure into specific shape so functional and contains polypeptides Polypeptide = unfolded and no specific function |
Polysaccharides | A polymer of many monosaccharides, formed by dehydration reactions - Complex carbohydrates |
Eukaryotic cells size | Eukaryotic cells (animals) 10-100µm ( 1µm = 10 ^-6 m) ( Bigger |
Prokaryotic cells size | Prokaryotic (bacterial cells) 1-100µm (0.001mm) Smaller |
Controlled experiment | One that tests experimental and controlled groups in parallel |
Dehydration reaction | The removal of water so that two monomers may join |
Micro (µ) | 10^-6 |
How do scientific theories and scientific hypotheses differ from each other ? | Theories tend to be supported by a much greater body of evidence than a hypothesis |
Nano (n) | 10^-9 |
What is the basic unit of a carbohydrate? | A monosaccharide |
What is tested directly during an experiment ? | A prediction |