Quiz 2

Question 1

1. What organ system moves internal parts of the body and generates metabolic heat?
Select one:
 a. skeletal system
 b. muscular system  
 c. digestive system
 d. cardiovascular system
 e. reproductive system

Answer 1

b. muscular system

Question 2

2. A group of similar cells that perform a specific function is called a
Select one:
 a. basement membrane
 b. cell mass
 c. cell organelle
 d. tumor
 e. tissue

Answer 2

e. tissue

Question 3

3. Cells that secrete products directly into body fluids are classified as
Select one:
 a. goblet cells
 b. exocrine glands
 c. endocrine glands  
 d. mucus glands
 e. salivary glands

Answer 3

c. endocrine glands

Question 4

4. 
Phospholipid molecules have a charged head group and two fatty acid tails. The hydrophobic tail groups would be found:
Select one:
 a. as part of the fluid mosaic
 b. on the membrane surface
 c. passing through the membrane
 d. attached to cytoskeletal elements
 e. in the membrane interior

Answer 4

e. in the membrane interior

Question 5

5. When a dried apricot is placed in water, it swells back up and takes on its original form. Why should this be so?
   Select one:
   a. solutes flow out of the apricot to equalize concentrations
   b. water enters the apricot cells in the process of osmosis
   c. water leaves the cells towards the area of higher solute concentration
   d. salts enter the apricot and cause it to swell
   e. the apricot is growing again

Answer 5

b. water enters the apricot cells in the process of osmosis

Question 6

6. Mucus and foreign materials move up the respiratory tract through the action of
Select one:
 a. flagella
 b. cuboidal epithelium
 c. diffusion
 d. cilia
 e. goblet cells

Answer 6

d. cilia

Question 7

7. A single layer of rectangular-shaped cells lining a body cavity would be
Select one:
 a. an endocrine gland
 b. simple columnar epithelium
 c. endothelial pavement
 d. a bed of microvilli  
 e. stratified cuboidal epithelium

Answer 7

b. simple columnar epithelium

Question 8

8. Which of these correctly describes smooth muscle tissue?
   Select one:
   a. stops blood leaking out
   b. involuntary, cells with single nuclei
   c. is found in the heart and blood vessels
   d. stratified, banded and enucleated
   e. striated and voluntary

Answer 8

b. involuntary, cells with single nuclei

Question 9

9. A tissue that is hard, rubbery, and lacks blood vessels is likely to be:
Select one:
 a. osteocytes
 b. cartilage
 c. stratified epithelium
 d. bone  
 e. nervous tissue

Answer 9

b. cartilage

Question 10

10. Bone is one type of
Select one:
 a. fibrous tissue
 b. epithelium
 c. skeletal tissue
 d. collagen
 e. connective tissue

Answer 10

e. connective tissue

Question 11

11. Maintenance of the body's internal conditions, such as temperature, pH and blood glucose at set levels is called:
Select one:
 a. homeostasis  
 b. endothermy
 c. integration
 d. metabolism
 e. feedback

Answer 11

a. homeostasis

Question 12

12. Which of these molecules could pass through a plasma membrane by diffusion?
Select one:
 a. sodium ions
 b. proteins  
 c. cholesterol
 d. glycogen
 e. carbon dioxide

Answer 12

e. carbon dioxide

Question 13

13. Which of these correctly describes skeletal muscle?
    Select one:
    a. stratified, banded and enucleated
    b. holds the body together
    c. striated, multinucleate and voluntary
    d. voluntary and smooth
    e. is found in the abdomen and uterus

Answer 13

c. striated, multinucleate and voluntary

Question 14

14. Which of these processes requires cells to expend energy in the form of ATP?
Select one:
 a. membrane fluidity
 b. active transport  
 c. diffusion
 d. osmosis
 e. facilitated transport

Answer 14

b. active transport

Question 15

15. Cells are usually small because they have to
    Select one:
    a. adapt to changing environments
    b. have an adequate surface area to volume ratio
    c. divide when they get too big
    d. form many different tissues
    e. fit through blood vessels

Answer 15

b. have an adequate surface area to volume ratio