They are not cells. They do not use energy to grow or to respond to their surroundings.
100
There are more bacteria in your _____________ than there are people living on Earth.
mouth
100
Some bacteria are hard to kill. They survive harsh conditions by forming _______________ to protect their genetic material.
endospores
100
Name a food created with the use of bacteria.
cheese, sourdough bread, yogurt, sauerkraut
100
Why didn't our bacteria cultures grow in the classroom?
too cold
200
A ___________ is a living thing that provides a source of energy for a virus or an organism.
host
200
T/F: The majority of bacteria in the world will make you sick if you swallow them.
false
200
Disease spreads because bacteria multiply so quickly. Compare/contrast binary fission and conjugation.
Binary fission (asexual reproduction) -- one bacterium divides into two identical cells
Conjugation (sexual reproduction) -- one bacterium shares genetic material with another through a threadlike tube
200
Where is a location in your body that is full of good bacteria?
intestine
200
Why was it important to use sterilized agar and a sterile cotton swab when we tested our bacteria samples?
Otherwise, we wouldn't know where the bacteria we grew came from.
300
Viruses are often compared to ______________ because they destroy the cells in which they multiply.
parasites
300
Bacteria are _______________, which means that the genetic material in their cells is not contained in a nucleus.
prokaryotes
300
What is the cure for rhinovirus?
There is no cure for the common cold! We can only treat its symptoms.
300
What is one example of bacteria helping our environment?
decomposing (returning chemicals to the soil), cleaning up after an oil spill
300
In yogurt-making, the bacteria converted the sugar in milk (lactose) into ________________, producing a sour taste.
lactic acid
400
A _________________ is a virus that infects bacteria.
bacteriophage
400
What are the three common shapes of bacteria?
spherical, rod-like, spiral
400
What is a common treatment for bacterial illnesses?
antibiotics
400
How is bacteria useful in the medical field?
production of medicine
400
What did our graphing exercise show us about the rate at which bacteria multiply?
The rate is steady for awhile but quickly jumps as the number keeps doubling (through binary fission).
500
All viruses have two basic parts: an outer coat made of __________ and an inner core made of _______________.
protein, genetic material
500
What are the two kingdoms of bacteria and what is one characteristic of each?
The archaebacteria that live in the thick mud at the bottom of lakes and swamps produce a gas called ____________, which is a major component in about 20% of the Earth's natural gas.
methane
500
Yesenia Pestis is _______________________.
the bacteria that caused Bubonic Plague (or Black Death).