I know these!
Viruses are widely considered to be
nonliving
A virus must have this in order to multiply
host
bacteriophage
2 ways bacteria are helpful
foods, repair damaged tissue, aid in digestion, environmental cleanup
Organelle in the cytoplasm of bacteria that produce protein
ribosomes
the region inside the cell membrane of a bacteria cell
cytoplasm
2 ways bacteria are harmful
resist antibiotics, cause illness, produce toxins
How viruses are named
where they are discovered
the disease it causes
organisms it infects
An organism that provides a source of energy for a virus or other organism
host
Name 2 foods that contain good bacteria.
cheese, pickles, yogurt, sour cream, buttermilk
Why can viruses not reproduce?
They are not living organisms
The process where one bacterium divides to form 2 identical cells
binary fission or asexual reproduction
The process where 1 parent cell transfers genetic material to another parent cell through a threadlike bridge
conjugation or sexual reproduction
The 2 basic structures of a virus
inner core of genetic material
What is the process of pasteurization?
When food is heated to a high temperature to kill most harmful bacteria without changing the taste of the food.
a small, thick-walled resting cell that forms inside a bacteria cell when conditions for growth are unfavorable
endospore
Explain how the shape of surface proteins allows for a virus to only attach and enter certain cells
lock and key
a long, whiplike structure that extends from the cell membrane of a bacteria cell that helps it to move
flagellum
What is inside an endospore?
genetic material and cytoplasm
Explain the cellular structure and number of bacteria.
prokaryote (meaning no nucleus) and unicellular
How do bacterial cells without flagellum move?
people, wind, water, pets
Explain cellular respiration.
the process of breaking down food to release energy
Compare the sizes of viruses and bacteria.
Viruses are significantly smaller than bacteria cells.
The role bacteria plays when breaking down large chemicals in dead organisms into smaller chemicals
decomposer or nature's recycler
How is nitrogen-fixing bacteria helpful to plants survival?
These bacteria live in the roots of plants and change nitrogen gas to products that plants need to grow.