Ursinus College- Bio 102 Exam 1
- types of microscopes – [ANSWER] light, fluorescence, electron
- types of light microscope – [ANSWER] bright field, phase contrast, differential interference
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contrast Which microscopes can view living or fixed slides? – [ANSWER] light and fluorescence Which microscopes only view fixed slides? – [ANSWER] electron Which microscope has the highest magnification? – [ANSWER] electron What microscope can view GFP? – [ANSWER] fluorescence What are the two types of electron microscope? – [ANSWER] scanning and transmission What are bacteria and archaea? – [ANSWER] prokaryotes What is the main difference between prokaryotes and eukaryotes? – [ANSWER] no nucleus vs.nucleus Is a prokaryote or eukaryote larger? – [ANSWER] Eukaryote What is the shape of DNA in prokaryotes and eukaryotes? – [ANSWER] Prokaryotes = circular, Eukaryote = linear What do prokaryotes and eukaryotes have in common? – [ANSWER] membranes, DNA, ribosomes, cytoplasm Is a prokaryote or eukaryote more diverse? – [ANSWER] Prokaryote When did the endosymbiotic theory occur? – [ANSWER] 1.5 billion years ago What is evidence of the endosymbiotic theory? – [ANSWER] mitochondria evolved from prokaryotes What is the endosymbiotic theory? – [ANSWER] Primitive eukaryotic-like cell that engulfs bacteria cell and establishes endosymbiotic relationship What organelle does Leigh's disease affect? – [ANSWER] mitochondria What organelle does Tay-Sachs affect? – [ANSWER] lysosomes What organelle does tomato stunt virus affect? – [ANSWER] chloroplast What organelle does Hutchinson-Gilford progeria affect? – [ANSWER] nucleus What are the 3 parts of cytoskeleton? – [ANSWER] actin, intermediate filament, microtubules What does hydrophobic mean? – [ANSWER] Water fearing What does hydrophilic mean? – [ANSWER] Water loving What is water made of? – [ANSWER] 2 hydrogen and 1 oxygen What bond is formed between H and O in water? – [ANSWER] strong covalent bond What makes a water molecule polar? – [ANSWER] negative oxygen, positive hydrogen What bond is formed between water molecules? – [ANSWER] noncovalent hydrogen bond What bond is formed when an electron is "stolen" from a neighbor? – [ANSWER] ionic bond What bond is formed when positive attracts negative bond? – [ANSWER] hydrogen bond