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

• a. Dull and malleable
• b. Brittle and shiny
• c. Magnetic and lustre
• d. Conduct heat and electricity

Single-celled microorganisms with cells like animal cells are called

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

How do microorganisms contribute to the process of decay?

• a. they release oxygen
• b. they absorb sunlight
• c. they break down organic matter
• d. they accelerate photosynthesis

What is a decomposer in an ecosystem?

• a. A plant that produces oxygen
• b. An animal that preys on other organisms
• c. A microorganism that breaks down dead plants and animals
• 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're curious to see how temperature influences the decay of bread. What variable should you focus on changing to investigate the impact of temperature on decay?

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

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

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

Why are microorganisms important in food chains and food webs?

• a. They are the primary source of energy in ecosystems.
• b.They break down dead organisms and recycle nutrients.
• c. They are at the top of the food chain and control the ecosystem.
• 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