Microbiology Chapter 7

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Microbiology
Chapter 7
Grade levels:
College: First year, College: Second year, College: Third year, College: Fourth year
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1

heredity

transmission of info from parents to you

2

chromosome

threadlike DNA. circular in prokaryotes and linear in eukaryotes

3

gene

sequence of DNA that codes for a specific trait

4

locus

location

5

alleles

the same gene with slightly different information at the location

6

mutation

change in DNA that's perminant

7

DNA replication

DNA produces more DNA

8

semiconservative replication

one strand of DNA is half old and half new

9

DNA polymerase

governs strand assembly and proofreads

10

trascription

RNA is produced using DNA as a template

11

ribosomal RNA

forms ribosomes

12

messenger RNA

carries instructions to build proteins to the ribosomes

13

transfer RNA

transfers needed amino acids form cytoplasm to ribsomes

14

translation

ribosomes "read" messenger RNA and link the coded for amino acids together into proteins

15

lyophilization

freeze dry

16

Microbe of the Week: Cat Scratch Fever

Bartonella Henselae or Alpipia felis
bacillus shape, motile
gram negative: pinkish
fastidious: grows on picky conditions
bite from a kitten and not long lasting

17

mutations

changes in DNA

18

Point mutation

one base is substituted for another base

19

frameshift mutation

one or more bases have been inserted or deleted

20

Causes of mutations

spontaneous
mutagens

21

Ames test

whether substances induce mutations in strains of Salmonella that cannot produce histidine. If it makes this, it is a mutagen