Microbiology Exam 1 Questions To Study

What is the function of the alveoli found in organisms of the alveolata protist group? A. Cellular respiration B. Cellular movement C. Membrane transportation D. DNA synthesis

C. Membrane Transportation

What organelle do amoebas use in the place of mitochondria? A. Ribosomes B. Hydrogenosomes C. Mitosomes D. Vacuoles

C. Mitosomes

Gram-positive bacteria encompass which two phylogenetic groups? A. Actinobacteria and Spirochetes B. Proteobacteria and Bacterioides C. Firmicutes and Actinobacteria D. Cyanobacteria and Proteobacteria

C. Firmicutes and Actinobacteria

True or False: Archaea are able to survive in extreme environments due to the production of highly resistant spores.

False; archaea are non-spore forming

Thermoplasms, including Thermoplasma and Picrophilus, are characterized by growth in what type of environments?

Low pH

Amoeba are known for moving through their environment in a unique way using their _________?

Psuedopodia

During the synthesis of peptidoglycan, bactoprenol is important for which step(s)? 1. Adding the peptide stem to NAM 2. Carrying the NAG-NAM pentapeptide across the plasma membrane 3. Recycling the carrier UDP 4. Catalyzing the trans peptidation reaction to cross-link peptidoglycan strands

2. Carrying the NAG-NAM pentapeptide across the plasma membrane

Archaea differ from Bacteria in a number of ways, select all those that apply: 1. The presence of plasmids 2. Linkages between sugars in the cell wall 3. Histones associated with DNA 4. 70S ribosome for protein translation

2. Linkages between sugars in the cell wall 3. Histones associated with the DNA

The peptide stem of mature peptidoglycan consists of four amino acids. Arrange the following amino acids in the order in which they are added to NAM during synthesis. A. L-Alanine B. D- Glutamic Acid C. meso-Diaminopimelic acid D. D-Alanine

A,B,C,D

The low G+C gram positive bacteria contains two classes of bacteria that are characterized by what feature? A. Endospores B. Filamentous hyphae C. Exospores D. Periplasmic flagella

A. Endospores

How are Rhizaria distinguished? A. Filopodia B. Environment C. Color D. Gram Stain

A. Filopodia

Some organisms within the phylum Euryarchaeota utilize carbon dioxide and hydrogen to produce: A. Methane B. Sugars C. Amino acids D. Nucleic acids

A. Methane

The bacterial homologue of actin, MreB, is not found in: A. Staphylococcus B. Gram - positive bacteria C. Gram - negative bacteria D. Bacillus

A. Staphylococcus

What is the correct order for viral replication and reproduction?

Adsorption, Entry, Synthesis, Assembly, Release

When nutrietnt levels are low, Streptomyces forms an aerial mycelium where it produces?

Antibiotics

What is the function of the viral protein spike within a lipid envelope?

Attachment to host cells

What allows bacterium to digest its own peptidoglycan to grow?

Autolysins

Isoprene units form the acyl chains in the membranes of? A. Gram + bacteria B. Archaea C. Fungi D. Gram - bacteria

B. Archaea

What structure collects small food particles in most Excavata organisms? A. Lysosome B. Cytosome C. Mitochondira D. Vacuole

B. Cytosome

Which species of amoeba is known to cause explosive diarrhea? A. A. proteus B. E. histolytica C. M balamuthi D. B. subtilis

B. E. histolytica

What kind of relationship is there between Golmeromycota and the plants? A. Parasitism B. Mutualism C. Commensalism D. None of the above

B. Mutualism

Where does the name Zygomycota come from? A. From the shape B. From the sexual reproduction from their zygospores C. From the asexual reproduction from their zygosporangium D. From the surface structure

B. Name from the sexual reproduction from their zygospores

What human disease is caused by microsporidia? A. AIDS B. Pneumonia C. Meningitis D. Common Cold

B. Pneumonia

What structure on microsporidia organisms is essential for host invasion? A. Flagellum B. Polar tube C. Lysosome D. Endospore

B. Polar tube

How does the Ostreococcus tauri reproduce? A. Sexually B. Asexually C. Both D. Neither

C. Both

What fungi is an overlooked human and animal pathogen? A. Microsporidia B. Ustilago maydis C. Cryptococcus neoformans D. Polyporus squambosus

C. Cyrptococcus neofromans

Excavata fall under which domain of life? A. Archaea B. Bacteria C. Eukaryotes D. RIP HARAMBE

C. Eukaryotes

Traditionally, truffle hunters use which animal to find the ascomycota in the wild? A. Dogs B. Fox C. Pig D. Goat

C. Pig

The large sac-like structure found in Ascomycota fungi is used for? A. Movement B. Defense C. Reproduction D. Cellular Respiration

C. Reproduction

Microorganisms are currently classified into three Domains of life, the Archaea, Bacteria and Eukarya. What was the basis for this classification scheme? A. The presence of internal membranes B. G+C content of the genome C. Metabolic requirements D. 16S rRNA sequencing

D. 16S rRNA sequencing

The most abundant protein in the outer membrane of Gram-negative bacteria is the: A. LPS B. Porin C. Autolysin D. Braun's lipoprotein

D. Braun's lipprotein

The predatory bacterium Bdellovibrio that parasitizes other gram - bacteria belongs to which group? A. Alpha-PB B. Bets- PB C. Gamma - PB D. Delta - PB E. Epsilon - PB

D. Delta-proteobacteria

What is a possible outcome when a bacterium becomes infected with a temperate or lysogenic phage? A. The bacterium changes phenotype B. The bacterium gains virulence traits C. The prophage is inherited by all progeny bacteria D. The bacterium is unable to be reinfected E. All of the above

E. all of the above

True of False: The three clades of Rhizaria are radiolarians, forams, and diatoms?

False

True or False: Spirochaetes stain positive in the Gram-staining procedure.

False

True or False: Teichoic acids are attached to the plasma membrane in Gram + bacteria?

False; attached to peptidoglycan

How do Glomeromycota influence agriculture?

Increased plant growth, increase nutrient intake, and increased disease resistance in plants.

What are the two types of nuclei in ciliates?

Micro and macro nuclei

Louis Pasteur utilized what apparatus to disprove the concept of Spontaneous Generation?

Swan neck flasks

Ustilago maydis produces diploid spores called _______?

Teliospores

What role do archaeplastida play in the environment?

They consume carbon dioxide and produce oxygen.

What role do diatoms play in the environment?

They produce organic carbon in the oceans.

How do diatoms reproduce?

They reproduce asexually.