Simulation 2 (Grade 7D)

Name two properties that metals can do better than Non-Metals!

• a. Dull and malleable
• b. Brittle and shiny
• c. Magnetic and sonorous
• d. Bendy and high density

Single-celled microorganisms with cells like animal cells are called

• a. Fungi
• b. Bacteria
• c. Algae
• d. Protozoa

What is the process of microorganism decay?

• a. they release oxygen
• b. they absorb light from the sun
• c. they break down organic matter
• d. they speed up nphotosynthesis

What is a decomposer?

• a. a plant that produces oxygen
• b. an animal that eats on other organisms
• c. a microorganism that breaks down dead organisms
• d. a type of fungus that causes diseases

You and your classmates are conducting an experiment for a science project to understand the factors affecting the rate of decay. You want to see how temperature influences the decay of bread. What variable should you change in this investigation??

• a. Temperature
• b. Type of organic matter
• c. Amount of microorganisms added
• d. Time

In a tropical rainforest ecosystem, you are examining the relationships between various organisms. Which role do the bacteria play in the food web?

• a. Predators
• b. Producers
• c. Primary consumers
• d. Decomposers

What is the role of microorganisms in food chains and food webs?

• a. they are the primary source of energy.
• b.they break down organic matter and recycle nutrients.
• c. they are at the apex predator of the food chain.
• d. they are the main predators in aquatic environments.

The following groups that do not belong to the group of microorganisms are......

• a. Bacteria
• b. Fungi
• c. Virus
• d. Protozoa

In a water, universal indicator is......

• a. Red
• b. Orange
• c. Green
• d. Blue

Choose two colorimetric indicators that can be used to determine whether the solution is acid or alkali!

• a. Red cabbage juice and universal indicators
• b. Hydrochloric acid and litmus
• c. Litmus and sodium hydroxide
• d. Hydrochloric acid and sodium hydroxide