Helpful and Harmful Microorganisms

Which statement is NOT an argument that supports the claim that some microorganisms are harmful?

• The algae in the water can develop a foul order.

• The algae in the water can block photosynthesis.

• The algae can increase fish populations by providing food.

• The algae can cause health problems for animals that drink the water.

Which best supports the claim that penicillin is beneficial to humans?

• There are only a small amount of people allergic to the medicine.

• It is made out of living microorganisms.

• It can be taken in a variety of ways.

• It treats infections by fighting harmful bacteria.

Which statement is TRUE?

• The beneficial microorganisms can help us digest food, create medicine, and make our food taste better.

• While there is many microorganisms that can make humans sick, most serve no purpose

• Very few microorganisms can make you sick. There are none that can help humans

• Using hand sanitizer and antibacterial soap will kill all of the microorganisms making human healthier.

Which statement is a claim that some microorganisms are helpful?

• Algae that live in rivers, lakes and streams can produce harmful poisons.

• Salmonella, can be found in undercooked chicken and cause people to get food poisoning.

• Lactobacillus can be used to make common food that people eat such as cheese.

• Many diseases that cause people to get sick are caused by viruses.

Which statement supports the claim that bacteria is beneficial?

• E-Coli can cause illness when contaminated water is consumed.

• Probiotics can help with digestion in a person's gut if eaten.

• Salmonella lives in raw eggs and undercooked meat that will cause someone to get sick if they eat it.

• Bacteria can decay food and cause people to get sick.

Which statement supports the claim that bacteria is harmful?

• Yeast, is an ingredient used to make yogurt and cheese

• Probiotics can help with digestion in a person's gut if eaten.

• Salmonella lives in raw eggs and undercooked meat that will cause someone to get sick if they eat it.

• Microorganisms eat the wastes and remains of old plants, which causes the plants to decay making the soil more fertile

Which is the BEST evidence to support that microorganisms are harmful?

• Lactobacillus, a type of bacteria is used to make soy sauce, cheese, and yogurt.

• Vaccines are made from viruses that are given to people to fight against the chickenpox.

• Bacteria in raw or undercooked meat can cause illness in humans.

• Fungi and bacteria are decomposers that break down dead organisms.

True or False

All microorganisms are harmful.

• False

• True