Unit Three Lecture Study Guide

Topics: DNA, RNA, Protein Pages: 5 (1541 words) Published: June 19, 2013
Unit 3 Lecture Study Guide

1. List the 4 primary tissue types and give the general characteristics and functions of each one.

2. How are epithelial tissues classified?

3. How does the type of epithelial tissue relate to its function? Give at least 1 example of where you would find each type of epithelial tissue.

4. Differentiate between exocrine and endocrine glands. Give an example of each.

5. What is the difference between apocrine, merocrine and holocrine glands? Which is the most common?

6. Describe connective tissue’s intercellular material.

7. What are the 8 main types of connective tissue? Briefly describe each.

8. Order the types of connective tissue from most rigid to softest. Be sure that you understand why?

9. Describe the 3 types of cartilage? Which is the most abundant?

10. Differentiate between the 3 types of muscle tissue.

11. What are the basic steps of tissue repair?

12. What is the composition of DNA?

13. How are nucleotides paired in DNA? What is different with RNA?

14. Explain the process of DNA replication and when it occurs.

15. What specifies that amino acid sequence of a protein?

16. What is RNA? How are the 3 types different in function?

17. How are triplet codes, codons, and amino acids related?

18. What is the purpose of mitosis?

19. Briefly describe what happens in each phase of mitosis?

20. What is the purpose of meiosis?

21. Explain the relationship between gametes, zygote, blastocyst, embryo and fetus.

1. Connective Tissue gives shape to organs and holds them in place. Blood and bones would be examples.

Muscle cells form active contractile tissue of the body known as muscle tissue. Muscle tissue functions to produce force and cause motion, either locomotion or movement of internal organs. Muscle tissue could be smooth muscle tissue which is lining the inside of organs, skeletal tissue, attached to bone for movement, and cardiac tissue, like the heart.

Nervous tissue is the made of cells that make up the nervous system, and is classified into two sub-categories: The central nervous system, and the peripheral nervous system.

Epithelial Tissues are formed by cells that cover the surfaces of organs: such as the skin, the airways, reproductive tract, and digestive tract.

2. They are classified based on the number of cell layers, the shape of the cells, and whether or not the cells are ciliated or unciliated.

3. Simply epithelium is one cell thick, it needs to be this size, because it’s generally found where absorption and filtration occur, and if it were thicker, it would make the function, harder. It can be found lining the alveoli of the lungs, and in the linings of the pericardial.

4. Exocrine glands excrete a product from ducts onto the outside of the body. Such as sweat glands, salivary glands, mammary glands; Endocrine glands are part of the endocrine system, and they secrete hormones directly into the blood stream, rather than from ducts, such as the adrenal the hypothalamus glands and the neuroendocrine glands.

5. These glands are separated by what they classify. There are used to classify exocrine glands and the mode of secretion. If a gland is classified as apocrine, secretion occurs through the plasma membrane. If it is merocrine, secretion occurs by exocytosis from secretory cells. If it is holocrine, the secretions are produced in the cytoplasm of the cell, and they are released by the rupture of the plasma membrane, resulting in the destruction of the cell.

6. The intercellular substance, or commonly called the “matrix” is made of fibers, a ground substance, and tissue fluid. Each type has its own patter ad proportion of intercellular materials.

7. Areolar tissue is fibrous connective tissue with the fibers arranged in a mesh or net. Adipose tissue is basically fat. Its main role is to store...
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