1st bio quiz

Question 1

three domains of life

Answer 1

Archaea, Bacteria, Eukarya

Question 2

the three domains consist of single celled what?

Answer 2

Prokaryotes

Question 3

bacteria and archaea are unicellular organisms that lack what?

Answer 3

membrane bound organelles including a nucleus.

Question 4

A pathogen is ?

Answer 4

any organism that causes a disease

Question 5

pathogenic bacteria is?

Answer 5

disease causing bacteria

Question 6

bacteria are what? what domain are they in?

Answer 6

they are prokaryotes and they are in domain “bacteria”

Question 7

what 3 characteristics are used to identify bacteria

Answer 7

shape, growth habit, and staining

Question 8

bacteria and (fungi) are essential in ecosystems because?

Answer 8

they are decomposers that break down dead organic remains and thereby return inorganic nutrients to plants and other soil borne organisms

Question 9

pathogenic bacteria are?

Answer 9

infectious agents that cause disease

Question 10

infectious bacteria are?

Answer 10

able to invade and multiply within a host

Question 11

infectious bacteria produce what?

Answer 11

toxins, chemical agents that can be deadly to a host.

Question 12

antibiotic therapy is?

Answer 12

effective treatment against a bacterial infection, but there is growing concern among medical professionals about strains of bacteria that have become resistant to common antibiotic therapies- creating super bugs!

Question 13

three common ways to classify bacteria are?

Answer 13

shape, arrangement, and gram stain

Question 14

the three shapes of bacteria are?

Answer 14

round (coccus (s) cocci (p), Rod (bacillus (s) bacilli (p), Spiral (spirillum (s) spirilla (p)

Question 15

some intermediate forms of bacteria are called?

Answer 15

coccobacilli

Question 16

some bacteria exists as what?

Answer 16

chains, packets, or clusters of cells

Question 17

diplococcus means?

Answer 17

that a coccus forms a chain consisting of only two bacteria

Question 18

streptococcus is?

Answer 18

a coccus that forms a longer chain

Question 19

a tetrad is?

Answer 19

packet of four cells

Question 20

more common bacteria form what?

Answer 20

clusters

Question 21

when the cluster is made of cocci, the organisms is a?

Answer 21

staphylococcus

Question 22

MRSA is a?

Answer 22

methycillin resistant staphylococcus aureus

Question 23

Au is?

Answer 23

gold

Question 24

they now treat MRSA with what?

Answer 24

vancomycin

Question 25

nosocomial means what?

Answer 25

acquired in the hospital

Question 26

bacteria with a thick layer of peptidoglycan in their call wall are?

Answer 26

gram positive and will stain purple

Question 27

bacteria with a thin layer of peptidoglycan in their cell wall are?

Answer 27

gram negative and will stain pink

Question 28

what type of semisolid medium is used to grow bacteria?

Answer 28

Agar

Question 29

what is the scientific name for spherical bacteria?

Answer 29

coccus

Question 30

gram positive bacteria have a thick layer of what substance in their cell wall?

Answer 30

peptidoglycan
pep·tuh·dow·glai·kn

Question 31

what color are gram negative bacteria following gram staining?

Answer 31

Pink

Question 32

name the three morphological shapes associated with bacterial cells

Answer 32

round, Rod, spiral

Question 33

what is a super bug?

Answer 33

a microorganism, such as a bacterium or fungus, that has become resistant to multiple antibiotics or antifungal drugs

Question 34

difference of peptidoglycan

Answer 34

thicker peptidoglycan cell walls are positive (Purple), Thinner peptidoglycan cell walls are negative (Pink)