Unit 2 Humans vs Bacteria

What is botulism?

• A type of food poisoning caused by bacteria

• A type of food preservation method

• A type of bacteria found in soil

• A type of bacteria that produces oxygen

Under what conditions do Clostridium botulinum endospores germinate?

• In aerobic conditions

• In the presence of heat

• In anaerobic conditions

• In the presence of oxygen

Tags

NGSS.HS-LS2-3

How can bacterial endospores be killed in food?

• By heating under high pressure at temperatures above the boiling point of water

• By exposing them to sunlight

• By freezing the food

• By adding preservatives

Which diseases can be caused by bacteria?

• Strep throat, ear infection, and tooth cavity

• Common cold, flu, and allergies

• Asthma, diabetes, and cancer

• Heart disease, stroke, and obesity

What is the role of bacteria in nutrient cycles?

• They break down organic materials and release elements into the environment

• They produce oxygen through photosynthesis

• They convert atmospheric nitrogen into a usable form

• They alter the composition of the atmosphere

Tags

NGSS.MS-LS2-3

What is the significance of cyanobacteria in Earth's history?

• They were the first organisms to carry out photosynthesis

• They are major producers of oxygen

• They can convert atmospheric nitrogen into a usable form

• They can live under extreme conditions

Tags

NGSS.HS-ESS2-7

What makes archaeon enzymes unique?

• They can withstand extreme conditions of heat, cold, acidity, and salinity

• They are used in DNA analysis and diagnosing diseases

• They are destroyed by high temperatures

• They are slow and expensive to use

What is the primary function of bacterial flagella?

• They help bacteria move towards or away from stimuli

• They help bacteria reproduce

• They help bacteria photosynthesize

• They help bacteria digest food

What is the significance of bacterial conjugation?

• It is a process by which bacteria exchange genetic material

• It is a process by which bacteria produce energy

• It is a process by which bacteria move

• It is a process by which bacteria die

What role do bacteria play in the nitrogen cycle?

• They convert nitrogen gas into a form that plants can use

• They convert nitrogen gas into a form that animals can use

• They convert nitrogen gas into a form that humans can use

• They convert nitrogen gas into a form that fungi can use

Tags

NGSS.MS-LS2-3