Pre-lab Quiz: Examining the Morphology of Bacteria

What is a shape that bacteria exist in?

round, rod, spiral

Latin words that describe the 3 shapes of bacteria?

bacillus, coccus, spirillum

The prefix _____________ indicates bacteria that exist in clusters.

staphylo

The prefix __________ refers to bacteria arranged in chains.

strepto

All bacteria have a ____________ strand found in a __________________ region.

 

DNA, nucleoid

Three structures that only some bacteria have are a ______________, ____________ and _________.

 

capsule, flagellum, pili

Bacteria are found everywhere.  True or false.

true

All bacteria are harmful.  True or False

false

There are many more times the number of bacteria living on and in humans than there are cells that make up the human.

true

A common bacteria that live in the human gut and aid in digestion is ______________________ ______________.

 

Bifidobacteria bifidum

___________________________ are bacteria that live in the human gut and break down lactose.

lactobacillus

The harmful bacteria __________________________ __________________ enters our bodies through open wounds and causes __________.

 

clostridium tetani, tetanus

Bacteria reproduce through the process of ______________ _____________.

 

binary fission

As a single bacterial cell reproduces and divides a __________________ forms, which can be identified by a unique set of characteristics.

colony

The undesired growth of bacteria can be slowed or stopped by using ______________________.

 

antibiotics

Any type of antibiotic will inhibit the growth of every bacteria.

false

A clear area surrounding an antibiotic disc where bacteria can't grow is called a _______________________________.

 

zone of inhibition

The larger the zone of inhibition around an antibiotic, the more effective that antibiotic is against that particular bacterial growth.

true

The letters AM stand for _____________________.

ampicillin

The letter "P" stands for _________________________

penicillin

Which characteristic listed below is NOT one of the characteristics that can be used to identify a bacterial colony

size

What will be used to grow bacteria the lab?

petri dish

Where is the wax pencil used to show the agar divided into 4 sections?

 

on the outside of the bottom of the petri disch

Once a bacterial sample has been collected by wiping some surface with a moistened Q-tip, how is the bacterial sample transferred to the agar?

 

gently wipe the Q-tip on the surface of the agar

After the bacteria plate (petri dish) has been innoculated, how long is it put aside for the bacteria to grow?

 

1 week, until your next lab period