microbio 101 - what is micro?

Prokaryotic cells that do not have cells walls made of peptidoglycan, or that lack cell walls completely belong to which Domain of Life? Archaea Monera Bacteria Eukarya

Archaea

Which are the three currently accepted domains? Archaea, Bacteria, and Eukarya Bacteria, Prokaryota, and Eukarya Bacteria, Fungi, and Protista Archaea, Prokaryota, and Eukaryota

Archaea, Bacteria, and Eukarya

Which of the following Domains contain Prokaryotes? Bacteria only Eukarya only Bacteria and Archaea Archaea only

Bacteria and Archaea

Which of the following accurately describes how bacteria and viruses typically compare in size? Bacteria are indistinguishable from viruses Bacteria are much smaller than viruses. Bacteria are similar in size to viruses Bacteria are much larger than viruses

Bacteria are much larger than viruses

Cells that have a nucleus are found only in the Domain ____. Archaea Eukaryote Bacteria Eukarya Prokaryote

Eukarya

Which Domain of Life includes some unicellular species and multicellular species? Archaea Bacteria Eukarya

Eukarya

Which Domain of Life is the only one that contains multicellular organisms (some of which are still microscopic despite being multicellular!)? Bacteria Eukarya Prokaryota Archaea

Eukarya

Pair each group to the short description that matches them best. Have cell walls made of peptidoglycan. Cell walls lack peptidoglycan, and often live in extreme environments. Are not made of cells, but still have DNA and proteins as their basis of structure. All organisms in this group have cells that contain a nucleus. choices: bacteria. Archaea, viruses, eukarya

Have cell walls made of peptidoglycan: Bacteria Cell walls lack peptidoglycan, and often live in extreme environments: Archaea Are not made of cells, but still have DNA and proteins as their basis of structure: Viruses All organisms in this group have cells that contain a nucleus: Eukarya

Which of the following is true of the microbial world? Humans could survive without microbes All microbes are harmful Many microbes are helpful Most microbes are pathogenic

Many microbes are helpful

Viruses not included in phylogenetic trees (Tree of Life) for which of the following reasons? It is too difficult to observe their characteristics They lack a nucleus They are acellular and nonliving They do not have any genes, which prevents genetic analysis

They are acellular and nonliving

Which of the following is not true of archaeans? Some species live on the human body They are genetically distinct from bacteria They have substantial metabolic differences from bacteria They are only found in extreme environments

They are only found in extreme environments

Which of the following is not a correct difference between living organisms and viruses? Viruses can't replicate without a host, while living organisms can reproduce asexually or sexually. All living organisms are made of cells, but viruses are cells protected with cell walls. Both viruses and living organisms evolve. Living organisms possess both DNA and RNA, viruses only carry one or the other.

all living organisms are made of cells, but viruses are cells protected with cell walls

microbes can be found: in the deepest parts of the ocean. on our hands. all of these places! around volcanoes.

all of these places!

Cell Walls made of peptidoglycan are a unique feature of which Domain of Life? Bacteria Eukarya Archaea Monera

bacteria

Which of the following is (are) structures that ALL cells have in common? (select all that apply) cytosol nucleus mitochondria ribosomes chromosomes made of DNA plasma membrane

cytosol ribosomes chromosomes made of DNA plasma membrane

Chitin cell walls are characteristic of which taxonomic group? fungi bacteria algae archaea

fungi

Where can the most dangerous microbes be commonly found? in water hospitals in the air on your hands

hospitals

________ are microbes that are harmful (cause illness or disease).

pathogens / germs

The term _______, means that bacteria can be found everywhere.

ubiquitous

Provide an example of an infectious agent that is non-living, but is studied in Microbiology:____________________________

virus / prion