Semester 2 Quiz 2

Question 1

How many chromosomes do bacteria contain

Answer 1

One closed loop chromosome

Question 2

What are the oldest living organisms that are about three.5 billion years old?

Answer 2

Bacteria

Question 3

What does the flagellum do

Answer 3

Excuse the bacteria the ability to move independently using the long rotating structure

Question 4

What is pili

Answer 4

Hair like structures also known as fimbriae

Question 5

Binary fission

Answer 5

The division of a single bacterium into two parts

Question 6

Bacillus

Answer 6

A rod shaped bacterium

Question 7

Coccus

Answer 7

Spherical or roughly spherical bacteria

Question 8

Conjugation

Answer 8

Transfer of genetic info between bacterial cells by direct cell to cell contact

Question 9

Facultative anaerobes

Answer 9

An organism that can live and grow with or without oxygen

Question 10

Endospore

Answer 10

A resistant asexual sport that develops inside some bacteria cells

Question 11

Spirillium

Answer 11

Bacteria with the rigid spiral structure

Question 12

Photoheterotroph

Answer 12

Organisms that use light for energy but can’t use carbon dioxide as there sole carbon source

Question 13

Nitrogen fixation

Answer 13

The chemical process by which atmospheric nitrogen is assimilated into organic compounds

Question 14

Chemoheterotroph

Answer 14

Not capable of fixing carbon to form their own compounds; obtain energy by ingesting organic molecules

Question 15

Obligate anaerobes

Answer 15

Micro organisms killed by normal atmospheric concentrations of oxygen

Question 16

Chemo autotroph’s

Answer 16

Autotrophs that use chemical energy to produce carbohydrates

Question 17

Prokaryote

Answer 17

A Microscopic single celled organism with no nucleus or specialize organelles

Question 18

Obligate aerobes

Answer 18

Organisms that require oxygen to live and grow

Question 19

How do you bacteria fit into food production disposal?

Answer 19

They decompose and break down food for example in digestion

Question 20

What is bacteria made up of

Answer 20

Has an intricate cell wall
No nuclear membrane
Flagellum
Has a cytoplasm, cell membrane and wall
Had pili
Contains plasmid
Had ribosomes
Has a plasma membrane

Question 21

3 tiles bacteria play in an ecosystem

Answer 21

Decomposers: fertilize soil

Nitrogen fixation: manufacture vitamins, primary producers(chemoautotroph)

Question 22

What is spore formation

Answer 22

Genetic info stored in endospores

Question 23

What is a plasmid

Answer 23

Small closed loops of DNA that are key in genetic engineering

Question 24

Capsules

Answer 24

Provide protection to the bacteria by shooting them against sound like chemicals and other harsh environmental factors

Question 25

Ensospres can survive through

Answer 25

Even when the bacteria isn’t alive and when the cell goes through trauma