Topics: Nervous system, Acetylcholine, Muscle Pages: 11 (1851 words) Published: March 22, 2011
This is a practice test for biology 101 test 2. You should also review all lectures and practice writing questions for each lecture set. You will also want to take advantage of the test banks under the “Lessons” tab in Angel. In addition to these sample questions and the test banks, you are advised to study the diagrams from all chapters and be able to label main structures.

1) The function of the rough endoplasmic reticulum(RER) is:
a) Digestion
b) Support
c) DNA isolation
d) Protein production

2) The cell membrane is composed of two layers of
a) Proteins with interspersed lipids
b) Hydrophilic lipids, proteins and sugars.
c) Phospholipids with proteins and sugars interspersed
d) Glycoproteins and glycolipids

3) The organelle responsible for the conversion of the pollywog to a frog (the loss of the tadpole's tail) is the a) golgi complex.
b) Mitochondrion.
c) RER
d) lysosome.

4) DNA can be found in this/these organelle(s).
a) golgi
b) smooth ER
c) mitochondria
d) nucleus
e) mitochondria and nucleus

5) One way that cells communicate is via paracrines. These chemical messengers a) are released into the bloodstream, potentially reaching every cell of the body. b) are released into tissues, to effect nearby cells only. c) allow physical connections between adjacent cells.

d) provide long-distance communication.

6) A main difference between eukaryotic and prokaryotic cells is a) prokaryotes have a nucleus and eukaryotes do not.
b) prokaryotes have organelles and eukaryotes do not.
c) eukaryotes have a nucleus and prokaryotes do not.
d) eukaryotes and prokaryotes do not have any differences.

7) The movement of water from an area of high water concentration to an area of low water concentration is called a) unlikely
b) osmosis
c) active transport
d) pinocytosis

8) This form of transport uses energy and moves molecules against or "up" their concentration gradient. a) passive transport
b) osmosis
c) diffusion
d) active transport
e) facilitated diffusion

9) When a cell is placed in an isotonic solution, water will a) move into and out of the cell at an equal rate and not affect the cell. b) move into the cell and cause the cell to burst
c) move out of the cell and cause the cell to shrink
d) move into the cell and cause the cell to shrink

10) Cell-to-cell (gap) junctions which allow for instantaneous communication can be found in which kind of cells? a) red blood cells
b) cartilage
c) heart muscle cells
d) bone cells

11) What is the purpose of cellular respiration?
a) production of glucose
b) production of ATP
c) production of oxygen
d) production of mitochondria

12) Endocytosis refers to the movement of substances from the surrounding fluid into the cell and is a form of active transport. (T/F)

13) Water cannot cross the phosopholipid bilayer unless it travels through a protein channel. (T/F)

14) Facilitated transport moves molecules from low molecule concentrations to high molecule concentrations. (T/F)

15) In most cases, mitochondria are inherited from both the mother and the father. (T/F)

16) Paracrines are secretions produced in one area of the body that travel to and alter the physiological activity of remote cells. (T/F)

17) Which type of tissue lines the body's cavities?
a) epithelial
b) connective
c) muscular
d) nervous

18) What component of connective tissue is designed for strength? a) fibroblasts
b) elastin fibers
c) chondrocytes
d) collagen fibers

19) Which type of cartilage is found in the fetal skeleton?
a) elastic cartilage
b) osteoid cartilage
c) fibrocartilage
d) hyaline cartilage

20) Which of the following is the disease that damages the cartilage inside joints? a) osteoarthritis
b) rheumatoid arthritis
c) osteoporosis
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