Life Science

In order for pea plants to be short, two factors must be present.  What types of factors are these?

• genes
• chromosomes
• dominant
• recessive

Scientists discovered three things when they observed cells through a microscope.  Which of the following did they NOT observe?

• All living things are made of cells
• All cells share some characteristics
• Different kinds of cells do different jobs
• Plant cells and animal cells have the same structure

What kind of microorganism turns milk into yogurt?

• yeast
• algae
• bacteria
• phytoplankton

Which of the following is found in plant cells but not in animal cells?

• chromosomes
• mitochondria
• vacuoles
• chloroplasts

The organelle that directs all of the cell's activities is the 

• cytoplasm
• mitochondria
• nucleus
• vacuole

How are an amoeba and a human being alike?

• Both are made from many cells
• Both are single cells
• Both are made of a cell or cells with a nucleus
• Both are made of a cell or cells with a chloroplast

What kind of microorganism makes penicillin?

• bacteria
• protist
• mold
• algae

Which statement is NOT true?

• Microorganisms help dead things decay.
• Microorganisms have only one cell.
• Microorganisms cause disease.
• Microorganisms are used to make cheese.

Which is the correct arrangement of structures from the simplest to the most complex?

• cell, organ, organ system, tissue
• cell, tissue, organ, organ system
• organ system, tissue, organ, cell
• cell, tissue, organ system, organ 

Which type of microorganism rots wood, spoils food, and causes skin diseases such as ringworm and athletes foot?

• bacteria
• protists
• protozoans
• fungi