A&P Chapter 3 Quiz 1
1. The fluid mosaic model describes the plasma membrane as consisting of a
a. lipid bilayer with embedded proteins.
b. A layer of lipid sandwiched between two layers of protein.
c. phospholipid with hydrophobic heads and hydrophilic tails.
d. protein bilayer with embedded lipids.
e. layer of protein sandwiched between two layers of lipids.
2. Membrane proteins with attached sugar groups are called
a. lipoproteins.
b. intergral proteins.
c. glycolipids.
d. carbolipids.
e. saccharoproteins.
3. Which of the following is NOT a function of the plasma membrane?
a. cell adhesion
b. control of movement of material into and out of the cell
c. cell-cell recognition
d. cellular communication
e. control center of the cell
4. The type of cell junction that plays a role in intercellular communication is the
a. tight junction.
b. hemidesmosome.
c. intermediate junction.
d. gap junction.
e. desmosome.
5. Which of the following does NOT require the cell to expend energy?
a. phagocytosis
b. endocytosis
c. pinocytosis
d. exocytosis
e. osmosis
6. A 0.9% saline solution is isotomic to red blood cells. A cell placed in a 10% saline solution will
undergo
a. lysis.
b. crenation.
c. plasmolysis.
d. hemolysis.
e. nothing will happen to the cell.
7. A resting membrane potential
a. is maintained by phagocytosis.
b. is responsible for hypercholesterolemia.
c. maintains a net positive charge inside the cell and a net negative charge outside the cell.
d. consists of more K+ and fewer Na+ outside the cell than inside the cell.
e. consists of more Na+ and less K+ outside te cell than inside the cell.
8. The function of mitochondria is
a. intracellular digestion.
b. detoxification of free radicals.
c. protein synthesis.
d. aerobic cellular respiration.
e. intracellular transport.
9. The function of ribosomes is
a. intracellular transport.
b. detoxification of free radicals.
c. aerobic cellular respiration.
d. protein synthesis.
e. intracellular digestion.
10. The centromere divides during
a. prophase.
b. anaphase.
c. telophase.
d. metaphase.
e. interphase.
11. A sequence of nucleotides on a strand of DNA that codes for a single amino acid is called a(n)
a. intron.
b. exon.
c. codon.
d. triplet.
e. anticodon.
12. Transcription involves
a. the synthesis of a protein at a protein at a ribosome.
b. delection introns and connection exons.
c. the synthesis of a strand of mRNA complementary to a strand of DNA.
d. adding a polyA tail to mRNA.
e. the synthesis of a strand of DNA complementary to strand of RNA.
13. Active cellular ingestion of a fluid is called
a. phagocytosis.
b. filtration.
c. bulk transport.
d. pinocytosis.
e. osmosis.
14. The function of lysosomes is
a. intracellular transport.
b. aerobic cellular respiration.
c. protein synthesis.
d. intracellular digestion.
e. detoxification of free radicals.
15. Chromosomes align along the equatorial plane during
a. prophase.
b. anaphase.
c. telophase.
d. metaphase.
e. interphase.
A&P Chapter 3 Quiz 1 Answer Key
1. a
2. c
3. e
4. d
5. e
6. b
7. e
8. d
9. d
10. b
11. d
12. a
13. d
14. d
15. d