Unit 3 Microorganisms Study Guide

Name

Lactobacillus is a microorganism better known as Probiotics. Probiotics are a microorganism that can help the body absorb nutrients and keep a healthy balance of beneficial bacteria. Conditions like lactose intolerance and irritable bowel syndrome can be treated using probiotics. You can find lactobacillus in certain foods or take a pill. Lactobacillus may also cause arthritis, bloating, heart inflammation, stomach cramping, stomach lining inflammation, and stomach rumbling. Which of the following is an example of how Lactobacillus can be used as a beneficial microorganism?

• Neferty took probiotics after every meal to prevent her heart from inflaming.
• Renata ate a container of Greek yogurt for breakfast every morning to treat arthritis.
• Brandyn took probiotics after eating ice cream to aid the digestion of lactose, a sugar found in dairy products.
• Wilson ate Greek yogurt every afternoon to keep his stomach from rumbling.

Which BEST supports the idea that microorganisms can be beneficial?

• ALL microorganisms are decomposers that break down waste.
• Some microorganisms can give you allergies.
• Some microorganisms are used in poison.
• Some microorganisms break down food in our digestive system.

Tags

NGSS.MS-LS2-3

Davante and Marcus were going over their notes for Mrs. Torma's science test. Davante had written that all microorganisms are harmful. Marcus had written that only some microorganisms are harmful. They argued about who was right. Based on their claims, who is correct and why?

• Davante, he said all bacteria exposure results in death.
• Marcus, he said bacteria helps digest our food to get nutrients
• Davante, he said all mold and fungi will give us infections.
• Marcus, he said microorganisms include bacteria, fungi, and mites.

Selena tripped on the stairs and had to go to the emergency room because she broke her arm. While she was there, she noticed that the doctors and nurses washed their hands every time they saw a new patient. Which of these is the BEST explanation about why the doctors and nurses washed their hands each time they came into a room?

• The doctors and nurses did not want to make the patients sick by spreading harmful germs from one patient to another.
• The doctors and nurses are germaphobes and don't like touching people.
• The doctors and nurses eat snack in between each patient and need to wash their hands.
• The doctors and nurses want to be good role models and practice good hygiene for all the patients.

Mateo was born in and lives in Georgia. He is going to visit his grandparents who live in Colombia over spring break. During the plane ride to Colombia, his mother warns him not to drink the water that comes from the faucets in his grandparents’ house even though his grandparents do. Which is the MOST LIKLEY reason why Mateo’s mother does not want him to drink the water in Colombia?

• Microorganisms that his digestive system is not used to are in the water and might make him ill.
• Colombia does not remove the harmful microorganisms from their water so nobody is allowed to drink it.
• Mateo's mom believes that people should only drink from water bottles so they don't get sick.

Mrs. Ortiz's class was learning about microorganisms. After completing some research about bacteria, she asked the class to visit her blog to discuss what they had learned. Which student’s post is true?

• John - All bacteria is bad.
• June - All bacteria is good.
• Jennifer - Bacteria can be good because it helps us digest food.
• Jack - Microorganisms are only harmful if we do not wash our hands.

Algae causes seawater to discolor and lowers its oxygen levels. It also can prevent sunlight from reaching plants beneath the surface.

• True
• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Probiotics is a medicine made to fight bacterial microorganisms.

• True
• False

Bacteria is helpful to the rainforest because it prevents the leaves from falling.

• True
• False