Biology 121

Biology 121 Name_____________________________________________

Exam #1 By signing my name above, I am attesting that I have neither

19 September 2005 given nor received unauthorized assistance on this exam.

Part A. Please provide an appropriate definition for each of the following terms. Please do not just provide an example, although you can use an example to supplement your definition. Each completely correct response is worth 2 pts.

1. metabolism-

2. negative feedback-

3. superior-

4. brachial region-

5. pleural membrane-

6. solvent-

7. nonpolar covalent bond-

8. base-

9. acidosis-

10. cell-

11. hypertonic-

12. ribosome-

13. connective tissue-

14. pseudostratified columnar epithelium-

15. goblet cell-

16. chondroblasts-

Part B. Please select the best answer to each of the following questions. Each correct response is worth 1 pt.

_____17. Tissues with related functions will organize themselves into:

a. cells

b. molecules

c. histograms

d. organs

e. none of the above

_____18. Histology is the study of:

a. tissues

b. cells

c. organs

d. large regions of the body

e. none of the above

_____19. The main role of the integumentary system is to:

a. circulate blood

b. digest food

c. act as a barrier

d. secrete hormones

e. none of the above

_____20. Homeostasis is promoted mainly by:

a. homogenous solutions

b. positive feedback

c. negative feedback

d. the process of childbirth

e. none of the above

_____21. When the blood gets too acidic, sensors trigger the medulla oblongata of the brain to increase the

individuals respiratory rate. This causes excess carbon dioxide to be exhaled out which causes the

blood to become less acidic. The decreased acidity of the blood then causes the respiratory rate to

slow down. This would be an example of:

a. positive feedback

b. negative feedback

c. a lack of feedback

d. distorted feedback

e. none of the above

_____22. The elbow is _______ to the wrist.

a. inferior

b. anterior

c. distal

d. proximal

e. none of the above

_____23. The sural region of the body would be located:

a. on the anterior surface of the upper arm

b. on the underside surface of the foot

c. on the posterior surface of the lower leg

d. on the anterior surface of the upper leg

e. on the head

_____24. The lungs will be found in the ______ cavity.

a. abdominal

b. pericardial

c. pelvic

d. dorsal

e. pleural

_____25. The serous membrane that surrounds the abdominal cavity is the:

a. pericardium

b. synovium

c. pleura

d. peritoneum

e. none of the above

_____26. A man is stabbed about 5 inches above his umbilicus ("belly button"), just below the sternum.

The stab wound punctures his stomach. Which abdominopelvic region did the stab wound occur?

a. hypogastric

b. umbilical

c. epigastric

d. iliac

e. hypochondriac

_____27. Iodine-131 is a radioisotope with a half-life of 8 days. If you inject 4 grams of Iodine-131 into a

patient's body today, how many grams will be left in their body after 16 days?

a. 1

b. 2

c. 3

d. 4

e. none

_____28. Chromium (Cr) has an atomic number of 24 and a mass number of 52. How many neutrons does

chromium have in it's atom?

a. none

b. 24

c. 28

d. 52

e. 76

_____29. Argon (Ar) has an atomic number of 18. How many electrons does argon have in it's outermost

shell (assume that argon is an electrically balanced atom)?

a. 1

b. 2

c. 4

d. 6

e. 8

_____30. Which of the following bonds is the weakest in strength?

a. Ionic bond

b. Covalent bond

c. hydrogen bond

d. all of the above are of equal strength

_____31. Electrons are unequally shared in a(n):

a. ionic bond

b. nonpolar covalent bond

c. polar covalent bond

d. hydrogen bond

e. none of the above

_____32. A substance that has a pH of 8 is ______ times more ______ than a substance with a pH of 6.

a. 2, acidic

b. 2, basic

c. 10, acidic

d. 100, basic

e. none of the above

_____33. A patient enters the hospital, and their blood pH is found to be at 7.00. This patient:

a. has a normal blood pH

b. is suffering from acidosis

c. is suffering from alkalosis

d. is suffering from halitosis

e. none of the above

_____34. Steroids are a specific type of:

a. carbohydrate

b. protein

c. nucleic acid

d. monosaccharide

e. lipid

_____35. The primary fluid that makes up the structure of the cell membrane is:

a. water

b. neutral fat

c. starch

d. phospholipid

e. none of the above

_____36. Cholesterol:

a. has no important function in the human body

b. is found in the membranes of cells in order to increase their integrity as a barrier

c. is a type of polysaccharide

d. all of the above

e. none of the above

_____37. Solute pumps, such as the Na/K pump, are examples of:

a. active transport

b. passive transport

c. bulk transport

d. all of the above

e. none of the above

_____38. Channel proteins are involved with the process of:

a. osmosis

b. simple diffusion

c. active transport

d. facilitated diffusion

e. none of the above

_____39. Osmosis is a type of:

a. passive transport

b. active transport

c. bulk transport

d. all of the above

e. none of the above

_____40. When cells take in solid particles, such as food, it is termed:

a. pinocytosis

b. phagocytosis

c. exocytosis

d. alkalosis

e. none of the above

_____41. The primary purpose of the rough endoplasmic reticulum is to:

a. synthesize lipids

b. detoxify alcohols

c. manufacture ATP

d. digest worn out cellular organelles

e. none of the above

_____42. Any tissue that lines or secretes is termed:

a. epithelium

b. exothelium

c. connective tissue

d. areolar tissue

e. none of the above

_____43. Which of the following does not describe epithelial tissue?

a. it has a rich vascular supply

b. it is almost entirely cellular

c. the cells are polar with one end exposed to a surface

d. all of the above describe epithelium

e. none of the above describe epithelium

_____44. Your skin epidermis is made up of:

a. areolar tissue

b. pseudostratified columnar epithelium

c. stratified squamous epithelium

d. simple squamous epithelium

e. none of the above

_____45. Goblet cells are frequently found in the intestinal lining which is made up of a single layer of

cells which are taller than wide. This tissue is:

a. simple squamous epithelium

b. transitional epithelium

c. simple columnar epithelium

d. stratified columnar epithelium

e. none of the above

_____46. The extracellular matrix of connective tissue can be made up of:

a. ground substance

b. elastic fibers

c. collagen fibers

d. all of the above

e. none of the above

_____47. Cartilage is produced by:

a. hemocytoblasts

b. osteoblasts

c. fibroblasts

d. chondroblasts

e. none of the above

_____48. Rib cartilage is primarily composed of:

a. elastic tissue

b. elastic cartilage

c. fibrocartilage

d. hyaline cartilage

e. none of the above

_____49. An epithelium composed of multiple layers of flat cells would be termed:

a. simple cuboidal epithelium

b. areolar tissue

c. stratified squamous epithelium

d. all of the above

e. none of the above

_____50. Fat is stored in:

a. adipose tissue

b. areolar tissue

c. reticular tissue

d. elastic tissue

e. none of the above

_____51. Tendons and ligaments are primarily made up of:

a. dense regular connective tissue

b. dense irregular connective tissue

c. hyaline cartilage

d. fibrocartilage

e. elastic cartilage

Part C. Other questions.

52. The tattooed man strikes again! Place the following tattoos in their correct places: (2 pts apiece)

an "X" in the hypogastric region
an "O" in the right lumbar region
an "A" in the mental region
an "S" in the left acromial region
a "smiley face" in the sternal region
a "Z" in the left lower quadrant
a "V" just distal to his patellar region

53. Describe what is meant by a radioisotope, and give one example? Also, what is a half-life? (6 pts.)

54. Describe the difference between simple diffusion, facilitated diffusion, and filtration. (6 pts.)

55. Name 7 types of epithelial tissue and either describe or sketch their appearance. (7 pts.)