SCB 201 - General Biology I with verified answers
already passed
1. Experimental controls are ensure that results are due to differences in only the
de- signed primarily to variable being tested
2. Which statement best New cell growth in the straight-neck flask but not the
summa- rizes the swan-neck flask demonstrated that exposure to
evidence from Pas- teur's airborne (pre-existing) cells was a necessary condition
experiment that put to for new cell growth.
rest the hypothesis of
sponta- neous
generation?
3. Pasteur's Experiment Published results of his experiment. Placed sterilized
broth
in a sterilized flask. He clearly showed that bacteria
couldn't arise spontaneously. Only when open to air,
the bacteria could emerge.
4. Pasteur's Germ Theory After proving that fermentation and decay were the
work of
living microscopic organisms, Louis Pasteur discovered
that many diseases are cause by living pathogenic
bacteria that he called germs.
5. Suppose you wanted to Conduct the experiment in a greenhouse or growth
de- termine whether chamber that allows careful control of all
increased at- mospheric environmental variables and the selection of treatment
CO2 will affect the CO2 levels.
growth of an invasive
grass in your area. How - Use of a controlled environment is the only setup
would you set up the that allows you to test various CO2 levels.
experiment to ensure
your results are useful?
1/
3
already passed
1. Experimental controls are ensure that results are due to differences in only the
de- signed primarily to variable being tested
2. Which statement best New cell growth in the straight-neck flask but not the
summa- rizes the swan-neck flask demonstrated that exposure to
evidence from Pas- teur's airborne (pre-existing) cells was a necessary condition
experiment that put to for new cell growth.
rest the hypothesis of
sponta- neous
generation?
3. Pasteur's Experiment Published results of his experiment. Placed sterilized
broth
in a sterilized flask. He clearly showed that bacteria
couldn't arise spontaneously. Only when open to air,
the bacteria could emerge.
4. Pasteur's Germ Theory After proving that fermentation and decay were the
work of
living microscopic organisms, Louis Pasteur discovered
that many diseases are cause by living pathogenic
bacteria that he called germs.
5. Suppose you wanted to Conduct the experiment in a greenhouse or growth
de- termine whether chamber that allows careful control of all
increased at- mospheric environmental variables and the selection of treatment
CO2 will affect the CO2 levels.
growth of an invasive
grass in your area. How - Use of a controlled environment is the only setup
would you set up the that allows you to test various CO2 levels.
experiment to ensure
your results are useful?
1/
3
