Practice Quiz

According to the diagram, what is the approximate size of a bacteria?
*

• 1 µm

• 10 µm

• 1 nm

• 100 nm

What is the microbiome?
*

• The microbiome is a term used to describe the study of microscopic organisms.

• The microbiome is a type of microscope used to study microorganisms

• The microbiome is the collection of microorganisms that live in and on the human body.

What is the main function of the microbiome in the gut?

• Filter waste products, control blood pressure, and support bone health.

• Break down toxins and harmful substances, regulate body temperature, and store excess nutrients.

• Produce hormones, regulate blood sugar levels, and maintain healthy weight.

Molecules are typically measured in nanometers, which are 1000 times smaller than micrometers.

• True

• False

Which of the following is NOT part of cell theory?
*

• The cell is the basic unit of life.

• All organisms are composed of one or more cells.

• Mutation can result from errors in DNA replication during cell division.

• All cells are from pre-existing cells.

1 meter is equal to

• 1 million nanometer

• 1 billion nanometer

• 1 thousand nanometer

• 1 trillion nanometer

Which ones are microscopic?

• apple

• sugar

• cells

• frog egg