Exam 10: Classification of Microorganisms

Into which group would you place a multicellular organism that has a mouth and lives inside the human liver?

All of the following statements are reasons why fluorescent in situ hybridization (FISH) has become a valuable tool for environmental microbiologists EXCEPT

Which of the following is NOT based on nucleic-acid hybridization?

Figure 10.1 -In Figure 10.1, species ʺc.ʺ is most closely related to which of the following?

Table 10.2 I. Gram-positive A. Catalase $+$ $\quad$ 1. Acid from glucose. $\quad$ Staphylococcus $\quad$ 2. Glucose $\quad$$\quad$$\quad$$\quad$$\quad$ Micrococcus B. Catalase- $\quad$ 1. Coccus. $\quad$$\quad$$\quad$$\quad$ Streptococcus $\quad$ 2. Rod $\quad$$\quad$$\quad$$\quad$$\quad$ Lactobacillus II. Gram-negative A. Oxidase- 1. Acid from lactose $\quad$ a. Uses citric acid. $\quad$$\quad$$\quad$$\quad$ Citrobacter $\quad$ b. Citric acid $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$ Escherichia 2. Lactose- a. $\mathrm { H } _ { 2 } \mathrm {~S}$ produced $\quad$ (1) Urease positive. $\quad$$\quad$$\quad$$\quad$ Proteus $\quad$ (2) Urease negative $\quad$$\quad$$\quad$$\quad$ Salmonella B. Oxidase $+$ $\quad$ 1. Rod. $\quad$$\quad$$\quad$$\quad$$\quad$ Pseudomonas $\quad$ 2. Coccus. $\quad$$\quad$$\quad$$\quad$ Neisseria -Use the dichotomous key in Table 10.2 to identify a gram -negative cell that ferments lactose and uses citric acid as its sole carbon source.

Which of the following best defines a strain in microbiological terms?

Into which group would you place a photosynthetic cell that lacks a nucleus?

Which of the following statements about the members of the Kingdom Animalia is FALSE?

At this point in time, scientists believe the vast majority of the domain Bacteria have been discovered.

A bacterial species differs from a species of eukaryotic organisms in that a bacterial species

Into which group would you place a multicellular heterotroph with chitin cell walls?

Into which group would you place a photosynthetic organism that lacks a nucleus and has a thin peptidoglycan wall surrounded by an outer membrane?

The cell membranes of all three domains are composed of straight carbon chains attached to glycerol by ester linkage.

When building a cladogram, the length of the horizontal branch is based on the calculated percent similarity between organisms.

Nucleic acid hybridization is based on the fact that

Protists are a diverse group of organisms that are similar in

Once a culture is purified, the next logical step in the process of identifying bacteria is biochemical testing.

The arrangement of organisms into taxa