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The Microbial World

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Marine microbes that photosynthesize and provide energy to the food web are called:

a)

photospores

b)

primary producers

c)

endospores

d)

bateriophages

2.

Prokaryotes do not have

a)

DNA

b)

cell walls

c)

membrane bound organelles

d)

ribosomes

3.

Decay bacteria

a)

photosynthesize sugars

b)

chemosynthesize sugars

c)

use pigments to capture sunlight

d)

break down organic matter and release nutrients

4.

Autotrophic prokaryotes produce sugars by

a)

photosynthesis

b)

chemosynthesis

c)

photosynthesis or chemosynthesis

d)

decaying organic matter

5.

Archaea are known as "extremophiles" because

a)

they can live in very deep water

b)

they can live in really hot water

c)

they can live in really salty water

d)

all answers are correct

6.

Where does photosynthesis take place in photosynthetic bacteria?

a)

chloroplasts

b)

cytoplasm

c)

cell membrane

d)

golgi apparatus

7.

Unicellular algae carry out photosynthesize in their

a)

cell membrane

b)

chloroplasts

c)

cell wall

d)

nucleus

8.

Diatoms have a two part cell wall (frustule) made of

a)

cellulose

b)

silica

c)

lipids

d)

glucose

9.

Diatoms appear golden-brown from this extra photosynthetic pigment

a)

chlorophyll

b)

phycocyanin

c)

phycoerythrin

d)

carotenoid

10.

These are the most important temperate and polar open-water primary producers

a)

diatoms

b)

dinoflagellates

c)

cyanobacteria

d)

kelp

11.

Dinoflagellates have a cell wall made of plates composed of

a)

cellulose

b)

silica

c)

lipids

d)

protein

12.

Dinoflagellates are important open-water primary producers in

a)

temperate/cool water

b)

tropical/warm water

c)

polar/cold water

d)

deep/salty water

13.

Protozoans obtain energy from

a)

photosynthesis

b)

ingesting food particles

c)

photosynthesis and ingesting food particles

d)

chemosynthesis

14.

Red tides can be toxic because of a toxin released by these unicellular protists

a)

diatoms

b)

dinoflagellates

c)

protozoans

d)

all answers are correct

15.

Forams and radiolarians have feet-like extensions to capture food called

a)

tentacles

b)

nematocysts

c)

pseudopodia

d)

spindles