CHƯƠNG 5: Cell structure

1.Which of the following is a common feature of all eukaryotic cells?

• • A. Lack of nucleus

• • B. Presence of peptidoglycan in cell wall

• • C. Presence of membrane-bound organelles

• • D. Use of binary fission

2.Which of the following eukaryotic microbes has a cell wall made of chitin?

• • A. Algae

• • B. Protozoa

• • C. Fungi

• • D. Bacteria

3.The plasma membrane of eukaryotic cells includes all of the following lipids EXCEPT:

• Phosphoglycerides

• Cholesterol

• Sphingolipids

• Peptidoglycan

4.What is the primary function of the rough endoplasmic reticulum (RER)?

• • A. Lipid synthesis

• • B. Protein synthesis

• • C. Carbohydrate storage

• • D. ATP production

5.The Golgi apparatus modifies and packages materials primarily for:

• Respiration

• Digestion

• • C. Secretion

• Photosynthesis

6.What is the function of lysosomes in eukaryotic cells?

• • A. Protein synthesis

• • B. DNA replication

• • C. Intracellular digestion

• • D. Photosynthesis

7.Which filament type is composed of actin?

• • A. Intermediate filaments

• Microtubules

• Microfilaments

• • D. Basal bodies

8.What is the diameter of microtubules?

• • A. 4–7 nm

• • B. ~10 nm

• • C. ~25 nm

• • D. 50 nm

9.Which structure is responsible for ribosome synthesis?

• • A. Nucleolus

• • B. Golgi

• • C. Lysosome

• • D. Mitochondria

10.What is the size of eukaryotic ribosomes?

• 70S

• 50S

• 30S

• 80S