Science 9A

Question 0

2. List three ways that archaebacteria are different from eubacteria.

Answer 0

Archaebacteria’s cell walls lack a certain compound found in the cell walls of eubacteria.

Archaebacteria’s DNA are more similar to eukaryotes than to other bacteria.

Archaebacteria live in extreme environments— places like boiling springs, salty lakes, sewage, and the intestines of some animals.

Question 1

1. How are the two bacterial kingdoms different from the four other kingdoms?

Answer 1

they contain the only prokaryotic organisms.

do not have a true nucleus with a membrane, organelles not surrounded by a membrane

Question 2

3. What are the three shapes bacteria can have?

Answer 2

spherical
rod shaped
spiral

Question 3

4. (True or False) All bacteria have a cell membrane.

Answer 3

False

Question 4

5. Bacteria reproduce by
   a. binary fission
   b. mitosis
   c. bacterial fusion
   d. meiosis

Answer 4

Asexually - binary fission. (NO meiosis)

Reproduce every 20mins

Question 5

6. List three things bacteria need for growth.

Answer 5

a lot of food.

need oxygen to grow rapidly.

bacteria need to get rid of waste products.

Need certain temperature and pH

Question 6

7. List three human foods that bacteria help produce.

Answer 6

1. Yogurt
2. Cheese
3. Pickles and sauerkraut

Question 7

8. What is decomposition? Why is it important?

Answer 7

Decayed dead animal. Returns materials to be used again. Important part of the ecosystem.

Question 8

9. What is a virus made of? Are they a “alive”?

Answer 8

a nucleic acid core with a protein coat.

no cell membrane, cytoplasm, or organelles. They are not cells and cannot reproduce on their own. Thus, they are not living organisms.

Question 9

10. Why are viruses not classified into a kingdom?

Answer 9

Because they aren’t alive

Question 10

11. Describe two things that protect the body against viruses.

Answer 10

vaccination

interferons (chemicals produced by your cells when a virus attacks. They interfere with the reproduction of viruses)

Question 11

These are living things that are so small they can’t be seen without the aid of a microscope.

Answer 11

Microorganisms

Question 12

The study of microorganisms is called ______?

Answer 12

Microbiology

Question 13

How many of the six Kingdoms do Microorganisms belong to?

Answer 13

FOUR

1. Archaebacteria
2. Eubacteria
3. Protista
4. Fungi

Question 14

_______ are microscopic, unicellular, prokaryotic organisms.

Answer 14

Bacteria

Question 15

Which kingdom of bacteria is responsible for decomposing most organic matter?

Answer 15

Kingdom Eubacteria

Question 16

Eubacteria include the _______, which were once called blue-green algae, and perform photosynthesis.

Answer 16

Cyanobacteria

Question 17

______ bacteria: arranged in a cluster.

_______ bacteria: arranged end-to-end in long chains.

Answer 17

Staph

Strep

Question 18

Which bacteria is the “ancient bacteria”, and which is the “true bacteria”?

Answer 18

“ancient” bacteria = archaebacteria

“true” bacteria = eubacteria

Question 19

A large group of bacteria is called a _____?

Answer 19

Colony

Question 20

Give an example of an Antibiotic resistant bacteria:

Answer 20

Staphylococcus (MRSA)

Question 21

What is smaller, a virus or bacteria?

Answer 21

Virus (x100,000)

Bacteria (x1000)

Question 22

How does a virus “reproduce”?

Answer 22

It doesnt because its not alive

The host cell reproduces the virus

Question 23

A virus that doesnt attack its host right away is called a ______ virus.

Answer 23

Latent virus (ie chicken pox)