Prokaryotic and Eukaryotic Cells

Examine the cell diagrams shown. Which of the following choices identifies the eukaryotic cell for the correct reason?

• Cell A, because it is a single cell
• Cell A, because a nuclear membrane contains the cell’s DNA
• Cell B, because it is much smaller
• 
  Cell B, because it contains genetic material

Which statement is true about living objects?

• They have prokaryotic cells.
• They have eukaryotic cells.
• 
  They have a mixture of prokaryotic and eukaryotic cells.
• They are made of cells.

What is the structure of prokaryotic cells?

• 
  The DNA is wrapped in a protective membrane.
• The DNA is many separate strands.
• 
  The DNA is one endless loop.
• There is no DNA in prokaryotic cells.

Based on the context, in paragraphs 2 and 5 membrane refers to _____.

• cells of different sizes
• 
  organisms that consist of only one cell
• a thin, soft, pliable sheet or layer
• large, efficient cells

“Karyose” comes from a Greek word that means “kernel” and “pro” means “before.” Based on this information, prokaryotic means ______.

• having several nuclei
• 
  possessing a true nucleus
• before a nucleus
• one membrane