Unit 5: Bacteria

Question 1

What are archaebacteria called that live in environments with no oxygen?

Answer 1

methanogens

Question 2

What are disease causing bacteria referred as?

Answer 2

parasitic or pathogenic

Question 3

Where is the DNA in a bacterium found?

Answer 3

within the cytoplasm

Question 4

Which type of genetic recombination is this?

Answer 4

conjugation

Question 5

What shape bacteria are these?

Answer 5

cocci

Question 6

What are archaebacteria called that live in extremely salty environments?

Answer 6

extreme halophiles

Question 7

What connects two bacteria together during conjugation?

Answer 7

sex pilus

Question 8

Eubacterians have unique cell walls in that they contain a layer of….

Answer 8

peptidoglycan

Question 9

Prior to binary fission what must occur within the bacterium?

Answer 9

DNA replication

Question 10

What bacterial appendage allows it to stick to door handles?

Answer 10

pili

Question 11

During transformation, what is the DNA fragment called?

Answer 11

Plasmid

Question 12

How many DNA molecules do bacteria have?

Answer 12

1

circular

Question 13

What are the two prokaryotic kingdoms?

Answer 13

archaebacteria and eubacteria

Question 14

What is the niche of eubacteria within our biosphere?

Answer 14

Decompose organic matter and return the nutrients to the environment.

Question 15

Where does the foreign DNA come from during the following type of genetic recombination

Answer 15

bacteriophage

(this is transduction)

Question 16

How are the cell membranes different between the two bacterial kingdoms?

Answer 16

eubacteria- may have two cell membranes

arachaebacteria have special lipids that withstand the harsh conditions of their environment.

Question 17

What is the only organelle that bacteria contain?

Answer 17

Ribosomes

rRNA

Question 18

What is the asexual reproductive process called that bacteria go through to make identical daughter cells?

Answer 18

Binary Fission

Question 19

During transformation, what transport process provides the means for how the DNA will enter the bacterium?

Answer 19

phagocytosis

Question 20

When bacteria go through repetitive binary fission and grow in clumps, those clumps are known as

Answer 20

colonies

Question 21

What is the niche of archaebacteria?

Answer 21

play a role in the creation of natural gas either in the Earth’s crust or within the digestive tracts of animals.

Question 22

What shape bacteria are these?

Answer 22

bacilli

Question 23

What are archaebacteria called that live in environments that are extremely hot and acidic?

Answer 23

thermoacidophiles

Question 24

What can be taken to kill or treat a bacterial infection?

Answer 24

antibiotics