BIOL 1611L – Anatomy & Physiology I Lab            Name_____________________

Cell Anatomy and Division/ Transport Mechanism and Permeability Worksheet

PART ONE – Multiple Choice

1. A membrane is said to be _____ if it will allow some but not all substances to diffuse through.
   1. Impermeable
   2. Permeable
   3. Parapermeable
   4. Selectively permeable

2. A solution of 0.9% sodium chloride, sometimes termed normal saline, is said to be ___ to the cells of humans and other mammals.
   1. Hypertonic
   2. Hypotonic
   3. Isotonic
   4. Osmotic

3. Protein synthesis in human cells occurs
   1. On ribosomes.
   2. In lysosomes.
   3. In the nucleus.
   4. In the Golgi apparatus.

4. The correct sequence of mitotic stages during cell division is
   1. Interphase, metaphase, anaphase, and telophase.
   2. Anaphase, metaphase, telophase, and prophase.
   3. Prophase, metaphase, anaphase, and telophase.
   4. Metaphase, anaphase, interphase, and telophase.

5. During a normal cell cycle, a cell spends most of its time in
   1. Prophase.
   2. Interphase.
   3. Anaphase.
   4. Telophase.

6. During which stage of mitosis do the chromosomes line up across the equator of a cell?
   1. Telophase
   2. Prophase
   3. Metaphase
   4. Anaphase

7. Enzymes are
   1. Lipids.
   2. Carbohydrates.
   3. Proteins.
   4. Nucleic acids.

8. DNA replication takes place during
   1. Interphase.
   2. Prophase.
   3. Metaphase.
   4. Anaphase.

9. –NH₂ and –COOH are characteristic of
   1. Organic acids.
   2. Amino acids
   3. Carbohydrates.
   4. Nucleic acids.

10. How many chromosomes are in a oral mucosa cell?
    1. 32 pairs
    2. 46
    3. 23
    4. 46 pairs

11. Which of these is not a mechanism that enables substances to enter cells?
    1. Active transport
    2. Phagocytosis
    3. Pinocytosis
    4. Cytokinesis

12. During which stage of mitosis are the chromosomes migrating toward opposite poles of the cell?
    1. Prophase
    2. Metaphase
    3. Anaphase
    4. Telophase

13. Which organelles function as the major sites of ATP production within cells?
    1. Centrioles
    2. Lysosomes
    3. Mitochondria
    4. Ribosomes

14. What would happen to red blood cells if they were immersed in a 10% salt water solution?
    1. They would multiply more rapidly.
    2. They would burst.
    3. They would lose water.
    4. There would be no effect.

15. Which of the following does not require an input of ATP from the cell?
    1. Passive diffusion
    2. Active transport
    3. Filtration
    4. Facilitated diffusion

PART TWO – Short Answer

1. State the function of each of these cellular organelles:

a.      Chromatin

b.      Nucleolus

c.      Centrioles

d.      Plasma membrane

e.      Smooth endoplasmic reticulum

f.        Ribosomes

g.      Golgi apparatus

h.      Lysosomes

i.        Mitochondria

j.        Nuclear membrane

2. Using your textbook or other references, name the specific stage(s) of the cell cycle which each of the following occurs in the cell.
   1. Cell is not actively dividing.

2. Chromosomes are lined up at the equator of the cell.

3. Chromatin condenses into chromosomes.

4. Nuclear membrane is not present.

5. DNA is replicating.