Groups of cells derived from a single parent cell by successive cell divisions are known as microbial ________ and which live in environments known as microbial ________.
A) communities / habitats
B) communities / ecosystems
C) populations / habitats
D) populations / ecosystems
Major classes of macromolecules present in all living microorganisms include
A) amino acids, carbohydrates, lipids, and nucleic acids.
B) cell wall, cytoplasmic membrane, nucleoid, and ribosomes.
C) genes, proteins, and vitamins.
D) inorganic and organic compounds.
Microbial biochemistry involves the discovery of microbial ________ and the ________ they perform.
A) biomolecules / functions
B) enzymes / catalyses
C) metabolic pathways / reactions
D) biomolecules, enzymes, and metabolic pathways / functions
Microbial cells first evolved on Earth approximately ________ billion years ago.
A) 1.6 to 1.8
B) 3.8 to 3.9
C) 5.4 to 5.6
D) 7.0 to 7.2
Robert Koch received the 1905 Nobel Prize in Physiology or Medicine for
A) developing a smallpox vaccination.
B) identifying Mycobacterium tuberculosis as the causative agent of tuberculosis.
C) making an effective rabies vaccine.
D) developing a smallpox vaccination, identifying Mycobacterium tuberculosis as the causative agent of tuberculosis, and making an effective rabies vaccine.
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