ACTUAL QUESTIONS AND CORRECT
ANSWERS
cytoplasm, nucleus, plasma membrane - Correct answers✔✔three main parts of a cell
cytosol and organelles - Correct answers✔✔two components of cytoplasm
houses the cell's DNA - Correct answers✔✔function of nucleus
chromosome - Correct answers✔✔single molecule of DNA associated with several proteins and
contains thousands of genes
plasma membrane - Correct answers✔✔flexible, yet sturdy barrier that surrounds and contains
the cytoplasm of a cell
fluid-mosaic model - Correct answers✔✔model used to describe the plasma membrane;
continually moving sea of fluid lipids containing a mosaic of many different proteins
phospholipids, cholesterol, glycolipids - Correct answers✔✔three types of molecules that make
up plasma membrane
phospholipids - Correct answers✔✔what makes up 75% of the plasma membrane
glycolipids - Correct answers✔✔what makes up 5% of the plasma membrane
, lipids have both polar and nonpolar regions - Correct answers✔✔what does amphipathic nature
of lipids mean
head - Correct answers✔✔what is the polar part of the membrane
two fatty acid tails - Correct answers✔✔what is the nonpolar part of the membrane
rigidity - Correct answers✔✔what does the cholesterol in a membrane provide
glycolipids - Correct answers✔✔what appears in only the membrane layer that faces the
extracellular fluid
integral and peripheral - Correct answers✔✔what are the two types of membrane proteins
transmembrane - Correct answers✔✔what protein spans the entire lipid bilayer and protrudes
into both the cytosol and the extracellular fluid
glycoproteins - Correct answers✔✔type of peripheral protein; oligosaccharide
glycocalyx - Correct answers✔✔sugary coat formed by the glycolipids and glycoproteins
glycocalyx - Correct answers✔✔important in cell recognition, cell adherence, and protection
from digestion by enzymes in the extracellular fluid
signature - Correct answers✔✔what does the pattern of carbohydrates in the glycocalyx act as