Week 2, Quiz 2

Match the microbes with these descriptions (a microbe may be used more than once or not at all!)

ALGAE: obtain their energy through photosynthesis and produce most of our oxygen

ARCHAEA: are typically found in extreme environments like volcanoes, glaciers, and hot springs

BACTERIA: those that live in our gut protect us from pathogens

BACTERIA: produce vitamins for our body

FUNGI: used to make bread and beer

You have a pond water sample containing a "mystery microbe". You observe it and notice that it has a nucleus and other organelles and it is VERY motile.  Which organisms can you ELIMINATE****? (Select all that apply)

fungi

bacteria

Which of these is NOT a characteristic of viruses?

they contain ribosomes

Which of these are characteristics of PROTOZOA?

single-celled organisms

highly motile

found in soil and water

DNA enclosed in nucleus

What was the purpose of the "swan neck" S- shaped bend in the flask that Pasteur used in his experiment?

It trapped microbes from the air in the bent part of the flask so they couldn't get into the broth