Bacterial Physiology & Metabolism Quiz

What does the term 'metabolism' refer to in bacterial cells?

• The structure of the bacterial cell wall

• All chemical reactions occurring within the cell

• Only the breakdown of glucose

• The ability of bacteria to move

What is catabolism?

• Building large molecules from small ones

• Movement of bacterial cells

• Breaking down complex molecules to release energy

• Reproduction of bacteria

Anabolism is best described as:

• The destruction of harmful substances

• Breakdown of large molecules

• Synthesis of complex molecules from simpler ones

• Energy release through respiration

Which of the following is NOT a product of bacterial metabolism?

• Biomolecules

• Waste

• Enzymes

• Oxygen gas

What is the role of enzymes in bacterial metabolism?

• Transport of nutrients

• Speeding up chemical reactions

• Killing other bacteria

• Storing genetic material

Exoenzymes are defined as enzymes that:

• Work only on carbohydrates

• Function inside the bacterial cell

• Are secreted outside the cell

• Are used only by Gram-positive bacteria

Endoenzymes:

• Work on the bacterial surface

• Are secreted into the environment

• Work within the bacterial cell

• Are inactive enzymes

In aerobic respiration, what serves as the final electron acceptor?

• Nitrate

• Carbon dioxide

• Sulfate

• Oxygen

What is fermentation?

• A type of aerobic respiration

• A form of anaerobic metabolism that produces ATP without using oxygen

• Protein synthesis

• A method of DNA replication

What is the main difference between aerobes and anaerobes?

• Ability to move

• Nutrient requirement

• Use of oxygen for energy production

• Cell wall structure