What is a parfocal - Study guides, Class notes & Summaries

Microbiology Lab Midterm (Lab Notebook Questions) with Complete Solutions What is located in the headpiece that bends light rays toward the ocular lenses? - Answer-prism Name the only type of paper and three fluids that may be used to clean objective and ocular lenses? -Answer--lens paper -acetone -xylene -ethyl alcohol What is the most important aspect in caring for the microscope? -Answer-keeping it clean and using it properly Which way does the stage move when you rotate the coarse...

The limit of resolution of the unaided human eye is ______. - 0.2 mm For the typical light microscope, the limit of resolution is ______. - 0.2 micrometers When carrying a microscope, one hand should be under the _____ of the microscope to support its weight, and one hand should be on the _____ for balance. - base arm As the power of the objective lens increases, the working distance ______. - decreases Condenser adjustments increase _______ without affecting the bulb life. - illumination ...

What is a theory? A unifying explanation that has withstood many attempts to falsify it through scientific investigation over a prolonged period of time What are the 4 unifying theories in biology? - The Cell Theory - The Gene Theory - The Theory of Heredity - The Theory of Evolution Explain cell theory All organisms are made of cells that store hereditary information in DNA Explain gene theory DNA sequences may be altered by mutation or by crossing over and segrega...

Bio safety levels (BSL) measure what? correct answer: an organisms controllability, infectivity, virulence, pathogenicity, antibiotic resistance, vaccine, treatment, mortality. BSL 1 correct answer: does not normally cause disease in people BSL 2 correct answer: Associated with disease BSL 3 correct answer: indigenous/exotic agents that may have serious or lethal consequences and with potential for aerosol transmission BSL 4 correct answer: dangerous/exotic agents of a life-thre...

1 BIO 210 LAB EXAM 1 | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ ____________are substances (solid, liquid, or gas) dissolved by solvents in a solution (lesser amount). Correct Answer: solutes ________are the substances that dissolve solutes (greater amount). Correct Answer: solvents ___________contain a solvent and the solute. Correct Answer: solutions. Example: Salt dissolved in water. Which is the solute and which is the solvent? Correct Answer: salt is solute...

Microbiology LAB Exam 100% VERIFIED SOLUTIONS 2023/2024 Microscope- The Condenser - ANSWER focuses the light ging into the objective lens Microscope- The Iris Diaphragm - ANSWER adjusts the amount of light going into the objective lens Microscope- Nosepiece - ANSWER holds the objective lenses and rotates to change from one objective to another Microscope- Coarse Objective Knob - ANSWER moves the stage larger distances to help get the object in focus Microscope- Fine Adjustment Knob...

Parasagittal - ANS A plane of section that runs parallel to the long axis of the body and divides it into unequal right and left halves is called a ___________ section. Cranial Cavity - ANS What is the body cavity in which the brain is located (by itself)? Pleural - ANS What is the body cavity in which a single lung is located? Parietal Pleura - ANS What is the name of the membrane lining the walls of the pleural cavity? Distal - ANS The e...

Which discovery coincided with the invention microscopes? - ANSWER-cells What does the term compound mean? - ANSWER-2 sets of lenses compound What is used to improve contrast when viewing clear portions of cells? - ANSWER-stains/dyes What is the name for the lenses located near the eye? - ANSWER-Ocular lens/ eye peice Which term describes the minimum distance between two objects required to distinguish them as two separate objects?" - ANSWER-resolution objects?" If the total mag...

LSUE MICRO LAB EXAM 1 Exam Questions With Complete Solutions. The limit of resolution of the unaided human eye is ______. 0.2 mm For the typical light microscope, the limit of resolution is ______. 0.2 micrometers When carrying a microscope, one hand should be under the _____ of the microscope to support its weight, and one hand should be on the _____ for balance. base arm As the power of the objective lens increases, the working distance ______. decreases Condenser adjustments inc...

Microorganism Organisms and acellular entities too small to be seen clearly by an unaided eye; =<1mm in diameter often unicellular Cellular Fungi (yeasts + molds) protists (algae, protozoa, slime molds) bacteria (E. coli) Archaea (methanogens) Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Acellular Viruses (protein + nucleic acids) Viroids (RNA) Satellites (Nucleic Acid + RNA) Prions (inf...