m2 sm pre

Question 1

spherical or oval cells

Answer 1

Cocci

Question 2

rod shaped cells

Answer 2

Bacilli

Question 3

comma shaped curved rods; derive their name from their characteristics vibratory motality

Answer 3

Vibrios

Question 4

rigid spiral forms

Answer 4

Spirilla

Question 5

flexous spiral forms

Answer 5

Spirochetes

Question 6

branching filamentous bacteria

Answer 6

Actinomycetes

Question 7

• bacteria that lack cell wall
  
  • hence, do not possess a stable morphology
• occur as round or oval bodies & as interlacing filaments

Answer 7

Mycoplasma

Question 8

in pairs of two

Answer 8

diplo

Question 9

in groups of 4

Answer 9

Tetrad

Question 10

in chains

Answer 10

strepto

Question 11

in clusters

Answer 11

staphylo

Question 12

in groups of 8

Answer 12

sarcina

Question 13

genetic composition of organism, its entire complement of DNA

Answer 13

genotype

Question 14

expression of genes
proteins of cell, properties they confer on organism

Answer 14

phenotype

Question 15

controls synthesis of 1 or many repressible enzymes

Answer 15

Repression

Question 16

cells synthesize more enzymes in the presence of certain chemicals

Answer 16

Induction

Question 17

a form of genetic recombination in which a DNA fragment from a dead, degraded bacterium enters a competent recipient bacterium and is exchanged for a piece of DNA of the recipient

Answer 17

Transformation

Question 18

DNA is passed from 1 bacterium to another in a bacteriophage then incorporated into recipient’s DNA

Answer 18

Transduction

Question 19

self-replicating circular molecules of DNA carrying genes that aren’t essential for cell’s survival

Answer 19

plasmid

Question 20

these are small DNA segments that can move from 1 region to another of the same chromosome or different chromosome or plasmid

Answer 20

transposons