Bacterial Growth and Nutrition Quiz (Chapter 6)

What are the essential nutrients required by a bacterial cell?

• Proteins, lipids, carbohydrates, and nucleic acids

• Carbon, nitrogen, sulfur, phosphorus, and trace elements

• Vitamins, minerals, and water

• Oxygen, hydrogen, and helium

Which of the following is a source of carbon for bacteria?

• Water

• Carbon dioxide

• Oxygen

• Nitrogen gas

Tags

NGSS.HS-LS2-3

What term describes an organism that uses light as its energy source and carbon dioxide as its carbon source?

• Chemoautotroph

• Photoautotroph

• Chemoheterotroph

• Photoheterotroph

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What effect does a hypertonic solution have on a bacterial cell?

• The cell swells and bursts

• The cell remains unchanged

• The cell shrinks and may undergo plasmolysis

• The cell becomes turgid

Which term describes microbes that grow best at moderate temperatures?

• Psychrophiles

• Mesophiles

• Thermophiles

• Hyperthermophiles

How do obligate anaerobes function in the presence of oxygen?

• They thrive and grow rapidly

• They are unaffected by oxygen

• They are inhibited or killed by oxygen

• They require oxygen for growth

Tags

NGSS.HS-LS2-3

Which group of microbes prefers acidic environments?

• Neutrophiles

• Acidophiles

• Alkaliphiles

• Halophiles

What type of symbiotic relationship benefits both organisms involved?

• Parasitism

• Commensalism

• Mutualism

• Amensalism

What is the first step in bacterial cell division?

• Cytokinesis

• DNA replication

• Cell wall synthesis

• Chromosome segregation

What is the definition of doubling time in bacterial growth?

• The time it takes for a bacterial population to decrease by half

• The time it takes for a bacterial population to double in size

• The time it takes for a single bacterium to divide

• The time it takes for a bacterial population to reach its maximum size