Exam 1: Lab Quiz 1

Question 1

cyanobacteria are a morphophyletic lineage of photosynthetic ___

Answer 1

prokaryotes

Question 2

cyanos are the only bacteria with ____ and ____ and ___

Answer 2

chlorophyll a, photosystem 1 and 2

Question 3

what do cyanos use as an electron donor

Answer 3

water

Question 4

what is a byproduct of cyanos photosysthensis

Answer 4

O2

Question 5

what do most other bacteria use as an electron donor and produce as a by product?

Answer 5

H2S, Sulfer

Question 6

range of cyanobacteria presence arriving to earth

Answer 6

3.5-3.9 billion years ago

Question 7

prokaryotes means what

Answer 7

not eukaryotes

Question 8

cyanobacteria store carbohydrates in what form

Answer 8

glycogen

Question 9

internal paired membranes associated with photosynthesis is called what

Answer 9

thyloakid

Question 10

thylakoids contain

Answer 10

chlorophyll

Question 11

___ contain accessory pigments and are associated with thyloakoids

Answer 11

phycobilisomes

Question 12

do all cyanobacterias have a cell wall

Answer 12

yes

Question 13

what is the name of the structure that surrounds cyanobacteria on top of their cell wall

Answer 13

mucilaginous sheath

Question 14

many cyanobacteria are able to move through ___

Answer 14

gliding

Question 15

what is the term that means “defining features”

Answer 15

synapomorphic

Question 16

synapomorphic features of cyanobacteria are (4)

Answer 16

chlorophyll a, phycobilins, photosystems 1 and 2, use water as electron donor in light reactions of phorosysthesis.

Question 17

homoplasy means

Answer 17

acquisition of a biological feature by different monophyletic groups

Question 18

there are over ___ known species of cyanobacteria

Answer 18

8000

Question 19

cyanobacteria may be __, ___, or ___

Answer 19

unicellular, colonial, or filamentous

Question 20

Cyanobacteria species have a ___ relationship with eukaryotes

Answer 20

symbiotic

Question 21

heterocyst have ___ walled cells, what is their function?

Answer 21

heterocyst, enable fixation of inorganic nitrogen that can be used in biochemical pathways

Question 22

___ are resistant cells, designed to permit bacterium to survive in adverse conditions

Answer 22

akinetes

Question 23

cell type with storage products

Answer 23

akinetes

Question 24

cell type that can germinate and form new filaments

Answer 24

akinetes