Cell Structure and Function

In many cells, the structure that controls the cell's activities is the _____.

• nucleus
• organelle
• nucleolus
• nucleus cell membrane

Cells can be very different in size, shape, and the types of organelles they have.  However, at some point all cells have DNA and ______.

• cell wall
• mitochondria
• nucleus
• cell membrane

What statements does NOT make up the cell theory?

• new cells come from existing cells.
• everything is made up of cells.
• cells are the basic units of life. 
• all living things have cells.

how did the invention of the microscope help scientists come up with the cell theory?

• Microscopes helped scientists see people's germs.
• Microscopes helped scientists see cells and cell structures.
• microscopes helped
• microscopes

In eukaryotic cells, the cell's genetic information is found in the ______.

• nucleus
• ribosomes
• cell membranes
• lysosomes

the organelles that break down lipids, sugars, and proteins into small molecules that can be used by the cell are called ____.

• vacuoles
• ribosomes
• microfilaments
• lysosomes

cell membranes are made up of _____.

• carbohydrates
• lipid bilayers
• mitochondria
• ribosomes

What is the function of a ribosome?

• make proteins
• synthesize proteins
• eat proteins