May be important (Exam 1)

Question 1

3 domain system based on a comparison of ribosomal RNA genes, divides microorganism into:

Answer 1

Bacteria, Archaea, and Eukarya

Question 2

in the domain ___, it is a protist which is generally larger than bacteria and archaea

Answer 2

eukarya

Question 3

how many life cycle stages does slime molds have

Answer 3

two

Question 4

Under Fungi, yeast is __ and mold is __

Answer 4

unicellular, multicellular

Question 5

smallest of all microbes

Answer 5

viruses

Question 6

requires host cells to replicate

Answer 6

viruses

Question 7

Viroids and Virusids are infectious agents composed of ___

Answer 7

RNA

Question 8

infectious proteins

Answer 8

prions

Question 9

Viruses contains protein coat surrounding ___ ___

Answer 9

nucleic acid

Question 10

viruses must have __ ___ to replicate

Answer 10

host machinery

Question 11

definition of life ( 7 things )

Answer 11

cells & organization
response to environmental changes 
growth & developmental 
regulation and homeostasis 
reproduction 
energy use and metabolism 
biological evolution

Question 12

what is the central dogma?

Answer 12

dna -> rna -> protein

also can be : RNA -> DNA-> RNA-> Protein

Question 13

earliest molecules

Answer 13

RNA

Question 14

RNA molecules that form peptide bonds and performs cellular work and replication

Answer 14

ribozymes

Question 15

earliest cells may have been RNA surrounded by

Answer 15

liposomes

Question 16

cellular pool of RNA in modern day cell is associated with the ribosomes:

Answer 16

rRNA, tRNA,mRNA

Question 17

can generate gene expression

Answer 17

RNA

Question 18

most important tool to study microorganism

Answer 18

microscope

Question 19

true or false: disease was immediately obvious

Answer 19

false

Question 20

list three limitations of Koch’s postulates:

Answer 20

some organisms cannot be grown in pure culture, using humans in completely the postulates is unethical, molecular/ genetic evidence may replace and overcome these limits

Question 21

Koch’s work led to discovery or development of:

Answer 21

agar, petri dishes, nutrient broth & nutrient agar, and methods for isolating microorganisms

Question 22

essential tool in microbiology

Answer 22

fluorescence microscope

Question 23

particular useful for staining members of the genus myobacterium

Answer 23

acid- fast staining

Question 24

causes TB

Answer 24

Myobacterium tubercubolis

Question 25

analogous to procedures used for light microscopy

Answer 25

specimen prep

Question 26

allows for 3D observation of shapes of intracellular structure

Answer 26

freeze-etching

Question 27

some nutrients enter by __ diffusion

Answer 27

passive