Ch 7:Cell Structure and Function

The nucleus includes all of the following structures except

• cytoplasm
• a nuclear envelope
• DNA
• a nucleolous

Animal cells have all of the following EXCEPT

• mitochondria
• chloroplast
• a nucleus
• a cell membrane

Which of the following is true of ALL single-celled organisms?

• They are all prokaryotes
• They are all bacteria
• They are reproduce
• They all have a nucleus

The movement of water molecules across a membrane that does not let all materials pass through it is known as

• exocytosis
• pumping
• endocytosis
• osmosis

Cell membranes are made up of

• lipid bilayers
• mitochondria
• carbohydrates
• ribosomes

The organelles that break down lipids, sugars, and proteins into smaller molecules that can be used by the cell are called

• lysosomes
• vacuoles
• ribosomes
• microfilaments

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

• ribosomes
• lysosomes
• cell membrane
• nucleus

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

• a cell wall
• a cell membrane
• mitochondria
• a nucleus

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

• cell membrane
• organelle
• nucleus
• nucleolus