Advertisement Upgrade to remove ads

what word on the milk carton tells you that the dairy eliminated pathogens when processing the milk?

pasteurization

what process harmful bacteria? describe the process.

heating up food to a temp that kils bacteria

what bacteria changes the outside completely and how does this change help other organisms in the envioroment?

saprophyte, it decomposes and releases nutrience in to the soil for other living things to use

ehat kind of bacteria are helpful to farmers?

nitrogen-fixing bacteria

what are disease causing organisms called?

pathogens

what kind of drug can kill bacteria?

antibiotics

what are the poisens that pathogens produce called?

toxins

what are the thick walled cells of botulism bacteria callled?

endospores

explain how botulism occurs?

canned food poisening, the bacteria is enclosed in endospores which releases heat, once inside they can change reproduction system. they are anarobics

classification

arranging things into groups according to ways they are alike and not

taxonomy

the study of how living things are classified

binomial nomenclature

linnaeus naming system, each organism has two names

genus

the first part of an organisms name,it is a classification group that contains similar, closely related organsims

spieces

a group of similar organisms that can mate and produce fertile offspring in nature

taxonomic key

a series of paired statements that describe physical characteristics off different organisms

whydo scientists classify?

to organize living things into groups so organisms are easier to study

tell me when and how aristoles classified organisms?

4th century BC, he divided animals into three groups: fly, swim, run, walk, craw classified by behavior, apperence, and movement

when and what did lenaus use to classify? give an example.

1750s based on obsevable features. he used binomial nomenclature. a 2 part scientific name for each organisms. except:felis concolor= mountain lion or puma and felis domestius=house cat

how is the scientific name written?

it is italic or underlined. the genus name is capitalized and the spiece name begins with a small leter

why is the binomial nomenclature used?

it always uses the same name for the same organism. it identifies only on spieces or organism

what do viruses and bacteria have in common?

classified by shape, microscopic, and make vaccines

why are viruses not considered living things?

do not have cells, do not grow, do not use food or energy

how are they like organisms?

they produce

how is a virus measued

nanometers

whats bacteriophage?

a virus that infects bacteria

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set