midterm

Bacteria differ from viruses in that bacteria

all of the above

Which of the following is NOT a domain in the three domain system

A. Bacteria

B. Animalia

C. Archaea

D. Eukarya

B. Animalia

Regarding the experiments that "proved" spontaneous generation, which of the following statements is probably true?

A. Too much heat was applied

B. Air was lacking

C. Excess carbon dioxide was present

D. Microorganisms were already present

E. The food source could not support life

D. Microorganisms were already present

Regarding Pasteur's experiments with the S-neck flask, which of the following statements is true?

A. There was air invloved

B. All microorganisms were killed before beggining

C. Any possibility of contamination was removed

D. There was a food source involved

E. All of the above

E. All of the above

In the name Escherichia coli, coli is the

A. Genus

B. Discoverer

C. Domain

D. Kingdom

E. Specific epithet

E. Specific Epithet

Which of the following statements about biofilms is false

A. Biofilms in pipes block the flow of water

B. Biofilms on medical implants cause infections

C. Biofilms on rocks provide food for animals

D. Compared to free living bacteria, biofilms are more sensitive to antibiotics

E. Biofilms in your body protect mucous membranes from harmful bacteria

D. Compared to free living bacteria, biofilms are more sensitive to antibiotics

Which of the following is NOT an example of biotechnology

A. Bacterial production of vinegar

B. Bacterial production of yogurt

C. Bacterial production of human insulin

D. Bacterial production of French bread

E. Bacterial degradation of a dead animal

E. Bacterial degradation of a dead animal

Fungi differ from bacteria in that fungi

Have a nucleus

Which of the following pairs is mismatched

A. Vaccine - a preparation of microorganisms

B. Normal microbiota - harmful

C. Pathogen - disease causing

D. Penicillin - antibiotic

E. Chemotherapy - treatment of disease

B. Normal microbiota - harmful

Which of the following statements about fungi is true

All require organic material for growth

Which of the following requirements was NOT necessary for Pasteur to disprove spontaneous generation

Identifying bacteria

Which of the following pairs is mismatched

A. Pasteur - fermentation

B. Hooke - cell theory

C. Lister - aseptic theory

D. Van Leeuwenhoek - germ theory

E. Jenner - vaccines

Van Leeuwenhoek - germ theory

Which microscope is used to observe a specimen that emits light when illuminated with an ultraviolet light?

Fluorescence microscope

Which of the following pairs is mismatched

A. Confocal microscope - produces a three dimensional image

B. Scanning tunneling microscope - produces a three dimensional image

C. Fluorescence microscope - uses a fluorescent light

D. Scanning electron microscope - produces a three dimensional image

E. Darkfield - uses visible light

C. Fluorescence microscope - uses a fluorescent light

Which microscope is used to see internal structures of cells in a natural state

Phase contrasts microscope

In figure 3.1 line "a" points to the microscopes

Ocular lens

The appearance of gram negative bacteria after addition of the decolorizing agent in the gram stain

colorless

The purpose of mordant in the gram stain is

to prevent the crystal violet from leaving the cells

Which microscope achieves the highest magnification and greatest resolution?

Electron microscope

In which microscope does the image look like a negative stain

Darkfield microscope

Cells are differential after which step in the gram stain

Alcohol - acetone

Which of the following is NOT correct

1nm=10^-6um

The appearance of gram negative bacteria after completing the gram stain

red

Which microscope is most useful for visualizing a biofilm

Scanning acoustic microscope

Bacterial smears are fixed before staining to...

A. Kill bacteria

B. Affix the cells to the slide

C. Make their walls permeable

D. Both A and B

D. Both A and B

Which of the following statements best describes what happens when a bacterial cell is placed in a solution containing 5% NaCl

Water will move out of the cell

Which of the following statements is true

Endospores allow a cell to survive environmental changes

Which of the following are NOT energy reserves

A. Sulfur Granules

B. Lipid inclusions

C. Polysaccharide granules

D. Metachromatic granules

E. Carboxysomes

E. Carboxysomes

Which of the following have a cell wall

A. L forms

B. Protoplasts

C. Animal cells

D. Fungi

E. mycomplasms

D. Fungi

Which of the following is NOT a characteristic of the plasma membrane

A. Is selectivity permeable

B. Maintains cell shape

C. Is the site of cell wall formation

B. Maintains cell shape

Which of the following statements about a gram positive cell wall is false

A. It is sensitive to lysozyme

B. It maintains the shape of the cell

C. It protects the cell in a hypertonic environment

C. It protects the cell in a hypertonic envrionment

Figure 4.4 shows movement across a plasma membrane. Which figure best represents simple diffusion?

b

Figure 4.3, which diagram of a cell wall is a toxic cell wall

b

Which drawing in figure 4.1, is bacillus

c

You have isolated a motile, gram-positive cell with no visible nucleus. You can safely assume that the cell

Has a cell wall

In Figure 4.3, which diagram of a cell wall contains teichoic acids?

a