Chapter 6 Power Point

What is the function of peroxisomes?

• Cellular respiration

• Photosynthesis

• Oxidative reactions

• Protein synthesis

What is the primary function of chloroplasts in plant cells?

• Cellular respiration

• Photosynthesis

• Protein synthesis

• Lipid synthesis

How many triplets of microtubules are arranged in a ring in each centriole?

• Nine

• Six

• Twelve

• Three

What is the function of microtubules in shaping the cell?

• Providing structural support

• Producing energy

• Synthesizing proteins

• Replicating DNA

What is the common structure shared by cilia and flagella?

• A core of microtubules sheathed by the plasma membrane

• A core of actin filaments sheathed by the plasma membrane

• A core of intermediate filaments sheathed by the plasma membrane

• A core of collagen fibers sheathed by the plasma membrane

What is the structural role of microfilaments?

• To bear tension, resisting pulling forces within the cell

• To provide compressive strength

• To transport organelles

• To store nutrients

What forms a 3-D network called the cortex just inside the plasma membrane?

• Microfilaments

• Microtubules

• Intermediate filaments

• Collagen fibers

What is the main component of the core of microvilli in intestinal cells?

• Microfilaments

• Microtubules

• Intermediate filaments

• Collagen fibers

What is the role of dynein in the movement of flagella and cilia?

• To drive the bending movements

• To form the core of microvilli

• To resist pulling forces within the cell

• To anchor the cilium or flagellum

In muscle cells, how are thousands of actin filaments arranged?

• Perpendicular to one another

• Parallel to one another

• Randomly

• In a circular pattern