Chapter 5: Microbial Diversity

Question 1

photosynthetic, eukaryotic organisms

- can be arranged in colonies or strands

Answer 1

algae

Question 2

(T OR F) all algal cells consist of: 
cytoplasm
cell wall
cell membrane
nucleus
plastids
ribosomes 
mitochondria
Golgi bodies

Answer 2

true

Question 3

most algal cell walls contain ______

Answer 3

cellulose

Question 4

agar is from algae t or f

Answer 4

true

Question 5

very rare cause of human infections (ex. protothecosis)

Answer 5

prototheca

Question 6

most common medically infectious algae

Answer 6

phycotoxins

Question 7

the phycotoxins produced by the dinoflagellates that cause “red tides” can lead to a disease called _______

Answer 7

paralytic shellfish poisoning

Question 8

non-photosynthetic, eukaryotic organisms

- cannot make their own food by photosynthesis (some of them are parasites)

Answer 8

protozoa

Question 9

Protozoa do not have cell walls, but some possess a thickened cell membrane called ______ for protection

Answer 9

pellicle

Question 10

two stages of protozoan life

Answer 10

trophozoite

cyst

Question 11

stage of protozoa that is the motile, feeding, dividing stage
- feeding stage and need nila kumain for them to divide ; di pa sila infective stage but if wala silang cyst, infective stage na nila

Answer 11

trophozoite

Question 12

considered as the infective stage

- nonmotile, dormant, survival stage

Answer 12

cyst

Question 13

move by means of pseudopodia (“false feet”) ex. Entamoeba histolytica

Answer 13

amebae

Question 14

cause of amebic dysentery

Answer 14

Entamoeba histolytica

Question 15

move by means of hair-like cilia ex. Balantidium coli

Answer 15

ciliates

Question 16

cause of balantidiasis

Answer 16

Balantidium coli

Question 17

Move by means of whip-like flagella ex. Giardia lamblia

Answer 17

flagellates

Question 18

cause of giardiasis

Answer 18

Giardia lamblia

Question 19

has no visible means of locomotion

ex. Plasmodium spp.

Answer 19

Sporozoa

Question 20

cause of malaria

Answer 20

Plasmodium

Question 21

false foot ; cytoplasmic extension for them to move

Answer 21

pseudopodia

Question 22

study of fungi

Answer 22

mycology

Question 23

fungal infection

Answer 23

mycoses

Question 24

garbage disposers of nature ; not photosynthetic

Answer 24

fungi

Question 25

fungal cell walls contain a polysaccharide called _______

Answer 25

chitin

Question 26

some fungi are unicellular; some are filaments called ____

Answer 26

hyphae

Question 27

bunch of hyphae

Answer 27

mycelium

Question 28

hyphae are divided into cells by septa

Answer 28

septate hyphae

Question 29

does not contain septa therefore, it is not divided by septa

Answer 29

aseptate hyphae

Question 30

two general categories of spores

Answer 30

sexual spores (for sexual reproduction) and
asexual spores