Microbiology Test 1

FALSE

micoorganisms pla an important role in air pollution.

pathogens

disease-causing microorganisms

random mutations in bacterial genomes

the factors that contribute to the rising incidence of antibiotic resistance includes what?

the formal system for classifying and naming organisms was developed by who?

carolus linnaeus

bacillus

the bacterial shape of the cells in the scanning electron micrograph shown would best be described as

have differ from bacteria in that archaea

have cell walls composed of pseudomurein

if you were setting up an experiemtn to disprove spontaneous generation theory in a liquid medium, which of the following would be essential to the experiemtn?

using sterile liquid and preventing and preventing exposure to micoorganisms

what finding is essential for Edward Jenner’s vaccination process?

exposure to a pathogen may induce immunity

false

normal microbiota cannot cause diseases

False

pasteurization is the process of removing most food spoilage causing pathogens by utilizing high temperature to kill all micoorganisms present

^false

¹²₆C has 12 neutrons in its nucleus

calculate the molecular weight of ethanol, C₂H₅OH

46

identify the salt compound

MgCl₂

hydrolysis reaction

the chemical reaction in which Lactose + H₂O → Glucose + Galatose is a

No it does

does Triglycerides contain the functional group of phosphate?

false

Teritary structures are formed only from covalent bond

glucose

starch, dextran, glycogen, and cellulose are polymers of

blood usually around the neutral (pH 7) range, not the alkaline range, healthy human beings and blood contains buffers that prevent the pH from changing too drastically, so trying to forcibly alter blood pH wouldn’t work efficiently

it is impossible to increase the alkalinity of the blood in human beings because

specimen

what structure does light pass through after leaving the condenser in a compound light

basic dye- negative

which of the following following is mismatched?

crystal violet, iodine, alcohol-acetone, safranin

which of the following places the steps of the Gram stain in the correct order?

phase-constrast microscope

what can be used to view the internal structures of cells in its nativeb state?

electron micrscope

which microscope achieves the highest magnification and greatest resolution?

0.1 um

A virus measures 100 nm in length. What is its length in um?

condenser

7 is what on the microscope image shown?