Download BIOS 1300 SI WORKSHEET 4 (Chapter 3) SI Leader: Merrin Jeffries

BIOS 1300
SI WORKSHEET 4 (Chapter 3)
SI Leader: Merrin Jeffries (email: [email protected])
11 September 2014
MAIN CONCEPTS TO PULL FROM CHAPTER 3: (Fill in 3 main concepts):
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1. In osmosis, water flows across a membrane toward the solution that has the:
a. higher concentration ([]) of water
b. lower [] of solutes
c. [] of solutes at equilibrium
d. higher [] of solutes
2. Because of its chemical-structural composition, the cell membrane is called a:
a. hydrophobic barrier
b. glycocalyx
c. phospholipid bilayer
3. The resting membrane potential results from the:
a. equal distribution of ions across the membrane
b. functional reverse of endocytosis
c. unequal distribution of ions across the membrane
4. A solution that is hypotonic to cytoplasm has:
a. a solute [] higher than that of the cytoplasm
b. a solute [] lower than that of the cytoplasm
c. a solute [] that is equal to that of the cytoplasm
d. an osmotic [] higher than that of the intracellular fluid
5. Red blood cells may undergo hemolysis when the cells are placed in a:
a. a hypotonic solution
b. a hypertonic solution
c. an isotonic solution
d. a salt solution
6. The sodium-potassium exchange pump:
a. moves sodium and potassium ions along their [] gradients
b. is composed of a carrier protein located in the cell membrane
c. is not necessary for the maintenance of homeostasis
d. does not require ATP cellular energy
7. One of the great advantages of moving materials by active transport is:
a. carrier proteins are not necessary
b. the process is not dependent on a [] gradient
c. the process has no energy cost
8. Functions of the plasma membrane include all of the following, EXCEPT:
a. separation of the cytoplasm from the extracellular fluid
b. regulation of exchange of materials with the extracellular environment
c. sensitivity to chemical changes in the extracellular fluid
d. thermal insulation
e. structural support
9. Which of the following cytoskeleton components moves the chromosomes during cell
division?
a. microfilaments
b. intermediate filaments
c. thick filaments
d. microtubules
e. basal bodies
10. The skin swells and puckers during a long bath. This suggests that bath water is a(n)
___________ fluid.
a. isotonic
b. hypotonic
c. hypertonic
d. diffusion
e. toxic
11. Connective tissue fibers are produced mainly by:
a. fibroblasts
b. macrophages
c. adipocytes
d. mast cells
e. melanocytes
12. Loose connective tissue functions in all of the following ways, EXCEPT:
a. transporting substances between cells
b. supporting epithelia
c. anchoring blood vessels and nerves
d. storing triacylglycerols
e. filling spaces between organs
13. Transitional epithelium is found
a. lining the urinary bladder
b. lining the ducts that drain sweat glands
c. lining kidney tubules
d. lining the stomach
e. at the surface of the skin
14. Unlike cartilage, bone:
a. is a connective tissue
b. has a matrix that contains collagen
c. is highly vascular
d. has an outer covering
e. has cells with lacunae
15. The muscle tissues that shows no striations is ___________ muscle.
a. skeletal
b. cardiac
c. smooth
d. voluntary
e. multinucleated
16. The dominant fiber type in dense connective tissue is
a. collagen
b. elastin
c. actin
d. myosin
e. connectin
17. Intercalated discs and pacemaker cells are characteristic of
a. smooth muscle tissue
b. cardiac muscle tissue
c. skeletal muscle tissue
d. A, B, and C
e. none of the above
18. Cells that engulf bacteria or cell debris within loose connective tissue are
a. fibroblasts
b. macrophages
c. adipocytes
d. mast cells
e. melanocytes
19. Which of the statements is FALSE:
a. epithelial tissue is avascular
b. epithelial tissue and cartilage tissue are avascular
c. epithelial tissue, cartilage tissue and adipose tissue are avascular
d. epithelium lines the inner surface of blood vessels
e. blood vessels and blood are 2 different types of tissues
20. Most of the surface area of the cell membrane consists of ____________________.
21. Intracellular membrane proteins are bound to a network of supporting filaments
called the _________________.
22. The special name given to the net diffusion of water across a membrane is
_____________.
23. The separation of positive and negative ions by the cell membrane in an undisturbed
cell produces a potential difference called the ___________________________
potential.
COLUMN A:
_________ 1. Steroids
_________ 2. Osmosis
_________ 3. Electrical gradient
_________ 4. Crenation
_________ 5. Benign neoplasm
_________ 6. Concentration gradient
_________ 7. Glucose
COLUMN B:
A.
B.
C.
D.
E.
F.
G.
Normal cell functions
Shrinkage of a cell
Separation of solutes
Lipid soluble compound
Water soluble compound
DNA replication
Net movement of water