Phase contrast microscopy Study guides, Class notes & Summaries

A student in a cellular biology laboratory is faced with the task of detecting protein X in muscle cells taken from a rat. The tissue is required to be live while under analysis. Which type of microscopy should be employed? a) Phase contrast light microscopy b) Transmission electron microscopy c) Scanning electron microscopy d) Fluorescence microscopy e) None of the above - CORRECT ANSWER-d) Fluorescence microscopy Which of the following about the Cell Theory is FALSE? a) All c...

BMSC 210 Midterm 1 Study Guide | 100% Correct Answers | Verified | Latest 2024 Version 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?...

micrometer one millionth of a meter, 10^ -6 2. nanometer one billionth of a meter, 10^-9 3. Resolution the distance between two objects at which the objects still can be seen as separate 4. What happens if the resolution is poor? Poor or low resolution means two (or more) objects may appear as one. 5. Contrast the difference in light absorbance between two objects. 6. What happens if there is poor contrast? gives a high background and makes the visualization of multiple objects diff...

Does phase contrast microscopy require staining? correct answers No Simple staining is used mostly for... correct answers A quick observance Simple staining uses __________ dye. correct answers Positively charged Acid fast stain is used for... correct answers bacteria resistant to traditional staining; mostly for mycobacterium tuberculosis Resolution correct answers distance between two objects at which the objects can still be seen as separate Contrast correct answers difference ...

microbe living single-celled organism that requires a microscope and has the capacity to reproduce some microbes can be seen without a microscope naming system used:________; 1st word: _________________; always ____________; 2nd word: _______________; full name is always: ____________ binomial; genus --> capitalized; specific epithet; italicized or underlined Who built the compound microscope and coined the term "cell"? Robert Hooke Who first observe...

Model organisms are often used to study fundamental biological processes that can be applied to other organisms, such as humans. The bacteria E. coli is a popular model organism because it divides rapidly and can be genetically manipulated, among other reasons. Given what you know about the differences between prokaryotic cells and eukaryotic cells, which of the following biological processes is the most suitable for study using E. coli as the model organism. DNA replication DNA replication is...

Bio 181 ASU Exam 1 Questions & Answers 2024 Primitive prokaryote cell evolved into_________ - ANSWER-pro-eukaryotic cell Eukaryote - ANSWER-single celled organism Paramecium - ANSWER-distant ancestor of our cells, limited by # of biomolecular machines within itself What does a paramecium use cilia for? - ANSWER-to move What was the precursor to our kidneys? - ANSWER-contractile vacuole SEM(Scanning Electron Microscopy) - ANSWER-cannot view living cells What can parameciums...

MIBO 3500 Exam 1 Latest Update Graded A+ millimeter (mm) 10^-3 micrometer (um) 10^-6 nanometer 10^-9 Microbes Organisms and acellular agents too small to be seen by the unaided eye Robert Hooke made first compound microscope, coined the term "cell" Antoine van Leeuwenhoek built single-lens magnifier, first to observe single-felled microbes Francesco Redi meat and maggots research, disproved theory that microbes spontaneously generated Lazzaro Spallanzani also disproved the spontaneous g...

MIBO 3500 UGA Latest 2023 Already Graded A Hooke -coined term cells -made first microscope Spontaneous generation Living organisms appear from non-living matter Needham -for spontaneous generation -boiled uncovered broth and it became cloudy Spallanzani -against spontaneous generation -did one broth uncovered and one covered and boiled each Pasteur -against spontaneous generation -swan neck flask -pasteurization -silk worm Koch (not postulates) -link between microbe and disease -bacillus an...

The simplicity and clarity of Caenorhabditis elegans allowed researchers to - ANSWER-Identify the genes in differentiation of each cell type The diffraction limited resolving power of a standard light microscope is approximately - ANSWER-0.2 Om Chloroplasts are thought to have originated from endosymbiosis of ___ by large host cell. - ANSWER-Photosynthetic eubacteria such as cyanobacteria The eukaryotic nucleus contains ___ DNA molecule (s). - ANSWER-Multiple linear The source of the atm...