Infectious Agents Review 7th Grade Quiz

What are the characteristics of bacteria?

• Multi-celled organisms with simple structures

• No specific shape or structure

• Always harmful to humans

• Single-celled microorganisms with various shapes and structures

How do bacteria cause disease?

• By enhancing the body's ability to fight off infections

• By providing essential nutrients to the body

• By promoting healthy immune system

• By producing toxins and triggering an immune response

What are the characteristics of viruses?

• Non-living, require a host cell to replicate, smaller than bacteria

• Can only infect animals, cannot infect humans, always cause severe illness

• Require oxygen to survive, can be killed by antibiotics, have a nucleus

• Living, can replicate on their own, larger than bacteria

How do viruses replicate inside the host?

• By asking for permission from the host

• By creating their own cellular machinery

• By sending a polite request to the host's immune system

• By hijacking the host's cellular machinery

What are the characteristics of fungi?

• Prokaryotic, cell walls made of cellulose, reproduce through seeds

• Eukaryotic, cell walls made of chitin, reproduce through spores

• Multicellular, cell walls made of peptidoglycan, reproduce through binary fission

• Unicellular, cell walls made of silica, reproduce through budding

How do fungi spread and cause infections?

• Through spores

• By inhaling infected air

• Through direct contact with infected person

• By consuming contaminated food

What are the characteristics of parasites?

• Organisms that help the host to thrive

• Organisms that have no effect on the host

• Organisms that live on or inside another organism and benefit at the host's expense.

• Organisms that only live outside the host

How do parasites infect their hosts?

• Through various methods such as ingestion, injection, or direct contact

• By asking for permission politely

• By sending a friendly invitation

• Through singing and dancing

What are infectious agents?

• Plants and animals that are not harmful

• Non-living substances that cannot cause disease

• Inanimate objects that cannot spread infections

• Organisms such as bacteria, viruses, fungi, or parasites that can cause disease

How do infectious agents spread and cause diseases?

• Through telepathy and mind control

• Through alien abduction

• By dancing in the moonlight

• Through direct contact, airborne transmission, ingestion, and vector-borne transmission.