Kingdom Monera

How do cyanobacteria differ from green unicellular algae?

• A. Cyanobacteria reduce sulfur compounds.

• B. cyanobacteria lack cell wall.

• C. Cyanobacteria have no nuclei.

• D. green algae contain cell membranes.

The diagram/graph below shows four phases of growth in bacteria. Which of the above alphabet area shows LOG phase of bacterial growth?

• A

• B

• C

• D

James, jellies, preserves, honey, and others food with high sugar content hardly ever become contaminated by bacteria, even when the food containers are left open at room temperature. This is because bacteria that encounter such an environment

• A. undergo death as a result of water loss from the cell.

• B. are unable to metabolize the glucose or fructose, and thus starve to death

• C. are obligate anaerobes

• D. are unable to swim through these thick and viscous materials

Which of the following is LEAST associated with the others?

• A. Conjugation

• B. Transformation

• C. Transduction

• D. Binary fission

Recently, a microbe that can digest cellulose was discovered in a hot spring with an average temperature of 95°C. Predict the group to which this microbe most likely belongs.

• A. Archaea

• B. Proteobacteria

• C. Cyanobacteria

• D. Fungi

If all prokaryotes on Earth suddenly vanished, which of the following would be the most likely and most direct result?

• A. Human populations would thrive in the absence of disease.

• B. Bacteriophage numbers would dramatically increase.

• C. The recycling of nutrients would be greatly reduced, at least initially.

• D. There would be no more pathogens on Earth.

Genetic variation in bacterial populations cannot result from

• A. transduction.

• B. conjugation.

• C. mutation.

• D. meiosis.

Photoautotrophs use

• A. light as an energy source and CO2 as a carbon source.

• B. light as an energy source and methane as a carbon source.

• C. N2 as an energy source and CO2 as a carbon source.

• D. CO2 as both an energy source and a carbon source.

Which of the following labeled parts (A, B, C and D) is thought to be the site of DNA replication in bacteria?

• A

• B

• C

• D

Which of the given shapes of bacteria is obtained when the division of cell takes place in three planes?

• A

• B

• C

• D