Microbes and Society: Chapter 14 Practice Quiz

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor. (Kris.. do you want me to turn on this option?)

1: Nitrogen fixation refers to the direct conversion of atmospheric nitrogen gas into:
	A: ammonia
	B: glucose
	C: ATP
	D: nitrate

2: An example of a symbiotic nitrogen fixer is:
	A: Azotobacter
	B: Beijerinckia
	C: Clostridium
	D: Rhizobium

3: Ruminants rely on microbes to digest:
	A: starch
	B: cellulose
	C: glucose
	D: protein

4: A mixed fermentation is one which produces:
	A: both alcohol and carbon dioxide
	B: both acid and carbon dioxide
	C: both acid and alcohol
	D: several different kinds of acid

5: An example of a hard ripened cheese is:
	A: cheddar
	B: limburger
	C: camembert
	D: Roquefort

6: Cottage cheese is an example of a:
	A: sweet curd
	B: soft ripened cheese
	C: semi-soft ripened cheese
	D: unripened cheese

7: Fragments of DNA are frequently delivered into plants cells by the use of:
	A: a callus
	B: the Ti plasmid
	C: baculovirus
	D: veggie vaccines

8: The bacterium Bacillus thuringiensis has industrial importance because it produces a protein that:
	A: is deadly to agricultural pests such as tomato hornworms and corn borers
	B: prevents reproduction in medflies, a fruit and coffee crop pest
	C: prevents frost development on fruit and nut trees
	D: prevents herbicide resistance from developing in weeds

9: The synthetic bacteria-derived hormone known as bovine growth hormone is used for increasing:
	A: overall size of cows going to market
	B: crop yield for animal feeds
	C: milk production
	D: nutritional value of meat and milk

10: An example of a genetically modified food that’s currently available is the:
	A: salt-tolerant tomato
	B: bruise-resistant banana
	C: browning-resistant avocado
	D: wilt-resistant lettuce

Optional: Enter your name and your instructor's E-mail address to have your results E-mailed to him or her.
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