BIOLOGY 1424 EXAM 1 OBJECTIVES

Chapters 3, 4, 5, 6

 

CHAPTER 3 CELLS:

1.         Be familiar with the contributions of Robert Hooke, Robert Brown, Matthias Schleiden, Theodor Schwann, Louis Pasteur and Rudolf Virchow to the study of cell biology

2.         Identify the concept of the cell theory.

3.         Define magnification, resolution and contrast as they apply to the microscope.

4.         Explain the advantages of each of the following microscopes and the contrast and magnification of each.  Compound Light, Transmission Electron and Scanning Electron

5.         What is the average size of cells and what single factor has the greatest influence on their size limit?  Explain the surface volume ratio.

6.         How does metabolism and cell shape influence cell size?

7.         Identify the function of the plant cell wall. 

8.         Differentiate between the primary cell wall, secondary cell wall and middle lamella.

9.         What are the roles of cellulose, lignin and suberin in cell walls.

10.     Define the role of the plasmodesmata.

11.     Identify the basic structure of cell membranes.  What is the role of cellular membranes?

12.     Differentiate between integral and peripheral proteins.   What is the role of glycolipids and lipoproteins on the cell surface?

13.     Identify the structure and function of the smooth and rough endoplasmic reticulum.

14.     Explain the general structure and function of the Golgi apparatus.  Explain the source and formation of the Golgi and how the final product is delivered to its destination.

15.     Identify the structure and function of the mitochondria.  What is the significance of the presence of mitochondrial DNA and ribosomes?

16.     Recognize that plastids are unique to plants.  What is the role of proplastids, chloroplast, chromoplast and leucoplast?  Be specific.

17.     Discuss the structure of the chloroplast identifying the location of the thylakoids and stroma.

18.     Identify the structure and function of microfilaments and microtubules.

19.     Identify the function of the nucleus and the structure and function following nuclear structures; nuclear envelope, chromatin, chromosomes, nucleolus and nuclear pores.

20.     Define the role of a food vacuole, contractile vacuole and central vacuole of a plant cell.  Be specific in relation to the central vacuole.

21.     Identify the following differences between eukaryotic and prokaryotic cells.  Focus on the comparisons listed on the slide on prokaryotic and eukaryotic cells on the lecture tape..

22.     Identify the differences between plant and animal cells.

23.     Define all terms on the slide titled “Mitosis and the Cell Cycle”.

24.     Identify the events of interphase; G1, S and G2.

25.     Identify the major events that occur in the four stages of mitosis, prophase, metaphase, anaphase and telophase.  Differentiate between plant and animal cytokinesis.

 

CHAPTER 4 TISSUES

1.         Differentiate between meristems, simple tissues and complex tissues.

2.         Identify the location, products and function following meristematic tissues.  Apical meristem of the stem and root, vascular cambium, cork cambium and intercalary meristem.  Note that the vascular cambium is only in dicots, the cork cambium only in woody plants and that intercalary meristem is mostly in monocots.

3.         Recognize that primary tissues are derived from the cells produced by an apical or intercalary meristem and that secondary tissues develop from cells produced by a cambium or other lateral meristem like the cork cambium.

4.         Identify the structure, characteristics and functions of parenchyma, collenchyma and sclerenchyma tissue.  Define the function of the types of parenchyma and sclerenchyma identified on the lecture slide, “Non-Meristematic Simple Tissues”.

5.         Define epidermis and periderm.  How do they differ in location and structure?  Define cutin, cuticle, stomata, guard cells, lenticel, cork, suberin and root hairs.

6.         Identify the structure and functions of xylem. 

7.         Differentiate between tracheids and vessels.  Which is found in more primitive and more advanced plants? 

8.         Discuss the structure and role of pits found in the cell walls of xylem cells.

9.         Identify the structure and functions of phloem tissue identifying the role of sieve tube elements, companion cells and the sieve plate.   How do sieve cells and albuminous cells compare?

 

CHAPTER 5 ROOTS:

1.         Identify the functions of roots and root systems.

2.         Identify the portion of the plant embryo that produces the root.

3.         Differentiate between fibrous and rap root systems.

4.         Define adventitious roots and root hairs.

5.         Identify the location and role of the following regions of the root tip.  Root Cap, Apical Meristem, Region of Elongation and Region of Maturation.

6.         Explain how the root cap cells are involved with gravitropism.

7.         Where is the root hair zone and what is its function?

8.         Differentiate between monocots and dicots.  (all comparisons listed on the lecture slide, “Monocots vs.Dicots”.

9.         How does a monocot and dicot root differ?

10.     Identify the location and function of the following root parts.  Epidermis, Cortex, Endodermis, Casparian Strip, Pericycle, Pith

11.     Explain the formation and role of the Casparian strip and a passage cell.

12.     Identify the function of all the specialized roots listed on the slide, “Specialized Roots”.

13.     Explain the symbiotic association that results in mycorrhizae and nodules.  How does each benefit plants?

 

CHAPTER 6 STEMS:

1.         Identify the functions of stems.

2.         Define the following external features of a stem.  Terminal bud, terminal bud scale scar, axillary buds, node, internode, leaf scare, leaf bundle scar, stipules, petiole and blade.

3.         Explain how you could tell the age of a stem using the terminal bud scale scar.

4.         Identify the location and role of the following structures of the terminal bud.  Apical meristem, protoderm, procambium, ground meristem, bud primordium and leaf primordium

5.         What tissues develop from the protoderm, procambium and ground meristem.

6.         Describe and differentiate between protostele, siphonostele and eustele.

7.         Be able to differentiate between a herbaceous dicot, woody dicot and monocot stem.  Be able to describe the anatomical differences.

8.         Define, primary xylem secondary xylem, annual ring, spring wood, summer wood, xylem ray and cork.

9.         Identify the function of each of the specialized stems listed on the slide, “Specialized Stems”.