Bio 222 - Study guides, Class notes & Summaries

Antonie van Leeuwenhoek Correct Answer--Invented the microscope -Dutch linen merchant, and microbiologist -Discovered the microbial world, coined the term animacules -Constructed over 250 small, powerful microscopes that could magnify up to 300 times -Known as the father of bacteriology and protozoology Resolving Power Correct Answer-Ability of a microscope to differentiate two closely spaced objects as being distinct from one another The light microscope can distinguish two points that ...

Requirements for Hardy-Weinberg equilibrium - ️️1. No mutations 2. Large population so random chance does not cause allele frequency changes 3. No migration in or out of the population 4. Random mating happens 5. No phenotypic advantage is present Analogous structures - ️️Parts that have the same function, but developed from different lineages Genetic bottleneck - ️️Losing genetic or phenotypic diversity due to genetic drift Gene flow - ️️Movement of new alleles from one ...

true motility Correct Answer-directed motion of bacteria (energy expenditure by the cell) brownian movement Correct Answer-random back-and-forth jiggling motion due to collisions of water molecules with the cells (cells don't go anywhere)... results from kinetic energy of molecules around the cell flagella Correct Answer-long, whip-like structures that extend beyond the surface of the cell and glycocalyx and propel the cell through its environment. Composed of flagellin serovars Correc...

MMBIO 222 Quizzes 1-5 Questions with Complete Solutions

MMBIO 222 Quiz 1 with Complete Solutions

MMBIO 222 Quiz 1 Questions with Complete Solutions

Antonie Van Leeuwenhoek Correct Answer-Dutch merchant, microbiologist. Discovered the microbial world. Called microbes, "animacules". Constructed over 250 microscopes that could magnify up to 300 times. Condenser Correct Answer-Focuses light through specimen. Iris diaphragm Correct Answer-Controls the amount of light entering the condenser. Resolving Power Correct Answer--Ability of a microscope to differentiate two closely spaced objects as being distinct from one another. -Can dist...

Simple stain Correct Answer-Staining bacteria with a single dye. Does not differentiate. Shows morphology and arrangement. Two results of heat fixation Correct Answer-1. Kills the bacteria 2. Attaches it to the slide What is a dye? Correct Answer-A salt of a chromophore group and an oppositely charged ion. Most often it is a basic dye. Examples of dyes Correct Answer-Crystal violet, safranin, methylene blue, and carbolfuchsin What is a capsule? Correct Answer-A gelatinous covering a...

MMBIO 222 quiz #3 Questions with Complete Solutions

MMBIO 222 -- Quiz 1 questions with Complete Solutions