Microscopes Study guides, Class notes & Summaries

Microscopy - Microscopes

Bright Field Microscope CORRECT ANSWER Most widely used Dark object, bright background Examine stained and unstained specimens Made by putting light through specimen Dark field microscope CORRECT ANSWER Image is lighter than illuminated background Uses a condenser on the light microscope Phase contrast microscope CORRECT ANSWER Used with live specimen Produces image with specimen against gray background Can see internal cells Scanning electron microscope CORRECT ANSWER Detailed 3D...

BIOD171 ESSENTIALS IN MICROBIOLOGY LAB MODULE 2 MICROSCOPES FINAL EXAM REVIEWBIOD171 ESSENTIALS IN MICROBIOLOGY LAB MODULE 2 MICROSCOPES FINAL EXAM REVIEWBIOD171 ESSENTIALS IN MICROBIOLOGY LAB MODULE 2 MICROSCOPES FINAL EXAM REVIEW

VBIOD171 ESSENTIALS IN MICROBIOLOGY LAB MODULE 2 MICROSCOPES FINAL EXAM REVIEWBIOD171 ESSENTIALS IN MICROBIOLOGY LAB MODULE 2 MICROSCOPES FINAL EXAM REVIEWBIOD171 ESSENTIALS IN MICROBIOLOGY LAB MODULE 2 MICROSCOPES FINAL EXAM REVIEW

What are properties of all cells? - Growth Metabolism Evolution LUCA - Last universal common ancestor How do we decide how the phylogenetic tree is drawn? - Use ribosomes. All organisms have it and it has been the same for billions of years What are the domains? - Bacteria Archaea Eukarya What defines the domains of cells? - Their rRNA sequencing What domains are most closely related? - Archaea and eukarya What emerged from Archaea? - Eukarya How do we know kw when oxygen appeare...

Last Universal Common Ancestor (LUCA) CORRECT ANSWER Was a microbe of unknown type that lived about 4 billion years ago; the origin of all organisms. What is 16s small unit rRNA used for? CORRECT ANSWER It's used to study construct phylogenetic trees of organisms because it's highly conserved and hasn't changed much over time. Antonie von Leeuwenhoek CORRECT ANSWER Father of microscopy in 1620 Increased surface area like folded membranes CORRECT ANSWER How do larger cells maximize di...

Homeostasis When organisms maintain a stable internal environment even when external conditions change Metabolism Combination of chemical reactions taking place within an organism Stimulus A signal to which an organism responds Biosphere Means "living planet" Robert Hooke Scientist who looked at cork through a microscope and gave the name to cells Light Microscope A type of microscope Can magnify 1000x Not as strong as other microscopes Uses light Scanning Electron Microscope A typ...

Describe Koch's postulates and the significance of his experiment - Koch's postulates: with the use of anthrax provided a basis for Germ Theory. the experiment: extract blood from diseased individual grow culture put culture into healthy individual, develop disease extract this blood, culture it to show same results Describe the importance of Louis Pasteur and the significance of his swan-neck flask experiment - Disproved spontaneous generation (miasma) the swan-neck made contamination...

This pack of notes contains detailed information about scanning, transmission and light microscopes, mitosis and the cell cycle, cancer and animal and plant organelles. These notes helped me achieve an A* in my term exams and an A in my A level exams.

Why is it important to study microbiology? A. Microorganisms are part of the natural environment and important to nutrient cycling. B. Microorganisms are vital to producing essential products. C. Microorganisms are excellent subjects on which to conduct scientific research. D. Microorganisms are linked to many human diseases. E. All of these. correct answers E Which of these groups are single-celled and possess a nucleus? A. Fungi B. Bacteria C. Viruses D. Protozoa ...