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WorksheetsBacteria Structure & Function
Total questions: 40
Worksheet time: 24mins
How long do scientists belie bacteria have been in existence?
4.6 Billion years
3.5 Billion Years
3.5 Million Years
We have no evidence available to determine this.
Initially, ALL bacteria were classified together in a single Prokaryotic Kingdom called:
Kingdom Prokaryota
Kingdom Monera
Kingdom Archae
Kingdom Bacteria
Today, scientists divide bacteria into TWO Prokaryotic Kingdoms:
Monera and Eubacteria
Bacteria and Prokaryota
Archaebacteria & Eubacteria
Archaebacteria & Monera
Which of the following best describes the difference used to separate bacteria into the two different kingdoms?
Eubacteria have Peptidoglycan in their cell walls whereas Archaebacteria do not.
Archaebacteria have Peptidoglycan in their cell walls whereas Eubacteria do not.
Archaebacteria lack a nucleus whereas the Eubacteria have a nucleus.
Archaebacteria live in harsh environments whereas Eubacteria live in every habitat on earth.
Where would you find "thermoacidophiles" living?
in the oxygen-free mud at the bottom of swamps & bogs
in extremely salty bodies of water like the dead sea and great salt lake
in hot, acidic springs and geyser pools.
in your lower intestine
Where would you find a "halophile" bacteria living?
In the oxygen-free mud at the bottom of swamps & bogs
in extremely salty bodies of water like the Dead Sea and the Great Salt Lake.
In hot, acidic springs and geyser pools
in your lower intestines
Where could you find Eubacteria living?
in the air we breath
in rivers, lakes, and oceans
in the soil
on our skin and in our digestive system
Eubacteria can live in ALL of these places
What units are bacteria measured in?
Nanometers (nm)
Kilometers (Km)
Milimeters (mm)
Micrometers (um)
This spherical shaped bacteria is called:
baccilli
cocci
spirilli
none of the above
This bacteria shape is called:
spirilli
bacilli
cocci
bacteriophage
This bacterial shape is referred to as:
cocci
spirilli
enveloped
bacilli
Since this bacteria forms clusters of spherical cells, it is called:
streptococcus
staphlococcus
staphlobacilli
diplospirilli
Since this bacteria forms single-file strands of rod-shaped bacteria, it is called:
staphobacilli
streptococcus
streptobacilli
diplococcus
Structure B is called a ________ and functions to ________.
Pili / Transfer DNA from one cell to another
Flagella / Move the cell through an aqueous environment
Capsule / Protect the bacteria from antibiotics
DNA / Serve as directions for all the cell's proteins
Structure A is called a ________ and functions to ________.
Pili / Transfer DNA from one cell to another
Flagella / Move the cell through an aqueous environment
Capsule / Protect the bacteria from antibiotics
DNA / Serve as directions for all the cell's proteins
Structure D is called a ________ and functions to ________.
Pili / Transfer DNA from one cell to another
Flagella / Move the cell through an aqueous environment
Capsule / Protect the bacteria from antibiotics
DNA / Serve as directions for all the cell's proteins
Which of the following is NOT found in ALL bacteria cells?
DNA
Plasma Membrane
pili
Ribosomes
Cell Wall
Bacteria that feed upon dead organisms are called:
Saprophytes or decomposers
Autotrophs
Photoautotrophs
Chemoautotrophs
Bacteria that can live in total darkness at the bottom of the sea by using the chemicals spewing out of volcanic vents are called:
Saprophytes
Heterotrophs
Chemoautotrophs
Photoautotrophs
Some bacteria have chlorophyll in their plasma membranes. These bacteria get their nutrition by:
Making their own food from energy obtained from nutrients from deep-sea volcanic vents
digest dead and decaying organisms
Perform photosynthesis to make their own glucose.
none of the above
Bacteria that require oxygen in order to survive are called:
obligate anaerobes
obligate aerobes
facultative anaerobes
Bacteria that require an oxygen-free environment in order to survive are called:
obligate anaerobes
obligate aerobes
facultative anaerobes
Bacteria that can live either with or without oxygen in their environment are called:
obligate anaerobes
obligate aerobes
facultative anaerobes
This diagram is illustrating a method of bacterial reproduction called:
Conjugation
Transformation
Transduction
Binary fission
Which of the following is NOT true about this process?
The daughter cells will be genetically identical
it is a form of asexual reproduction
The parent cell replicates its DNA
it results in genetically different daughter cells
This diagram is illustrating a method of bacterial reproduction called:
Conjugation
Transformation
Transduction
Binary fission
Which of the following is NOT true of this process?
This process requires a pilus
This cell requires a flagella
The two cells are exchanging DNA
This process creates genetically varied cells
This diagram is illustrating a method of bacterial reproduction called:
Conjugation
Transformation
Transduction
Binary fission
Which of the following best describes what occurs during this process?
A donor cell creates a pilus in order to exchange peices of DNA with another bacterial cell.
A virus acts as a vector transferring DNA from one host cell to another, generating genetic variation.
A living bacterial cell picks up DNA fragments from the environment and incorporates it into its own chromosome, thus changing it's characteristics.
A single bacterial cell replicates its DNA and divides, generating two, identical daughter cells.
This web of carbohydrates is produced and used by bacteria to stick to surfaces like teeth, and doorknobs.
pilus
glycocalyx
flagella
cillia
capsule
Bacteria that feed on dead and decaying organisms are:
Saprophytes
Heterotrophs
Decomposers
All of these are true
The picture shows a 3-D model of a virus called a bacteriophage. Bacteriophages can infect bacteria such as E.coli. In what way are the bacteriophage and E.coli alike?
The both contain antibodies
They both reproduce by binary fission
They have identical genetic material
They both lack membrane-bound organelles.
A students researching bacteria concluded a report with the following claim: "ALL bacteria disrupt the health of organisms they inhabit, including humans."
Which statement correctly addresses the validity of the claim?
The claim is valid because many studies have shown that bacteria disrupt homeostasis.
The claim is invalid because there are many types of bacteria that help organisms maintain homeostasis.
The claim is invalid because only microorganism such as viruses disrupt the health of organisms.
The claim is valid because bacteria cause disease.
Which of these BEST demonstrates mutualism (both organisms benefit) between bacteria and humans?
Intestinal bacteria obtain nutrients from food in our digestive tract and produce vitamin K used by humans.
Bacteria become resistant to antibacterial medication that humans use for treatment.
Invasive bacteria at an area of injury produce toxins that damage healthy tissues.
Bacteria in improperly prepared food is consumed by humans, causing food poisoning.
Many soil bacteria act as decomposers feeding on dead organisms. Which statement best explains how these bacteria are beneficial and and necessary?
Decomposers perform gas exchange that assists the cellular activities of autotrophs.
Decomposers extract minerals from living tissue to recycle them back into the soil.
Decomposers transport nutrients through the vessels of plants.
Decomposers return organic material to the soil for use by autotrophs like plants.
A type of toxin produced by bacterial cells and found within their cell walls.
Vaccine
Endotoxin
antigen
Exotoxin.
A tough protective envelope formed by some bacteria when conditions are poor which enables them to lie dormant for years until conditions improve.
Capsid
Capsule
Endospore
Envelope
If you become sickened by a bacterial infection, your doctor should treat you by:
Prescribing antibiotics
Giving you a vaccine
Prescribing antibodies
There is no treatment that will help you get better.
Observe the test results shown.
Which antibiotic would be most effective at treating an illness caused by the bacteria growing in this petri dish?
A
B
C
D
_______ discovered the first antibiotic called ______ .
Schleiden / Amoxacillin
Gregor Mendel / Tretracycline
Alexander Fleming / Penicilin
None of the above
