HCS 212 Exam 1 Study Questions and
Answers
Chapter 2 - Ans:-Chapter 2
Extracellular fluid - Ans:-Body fluids located outside of cells; includes plasma and interstitial fluid
What can the cytoplasm be divided into? - Ans:-Cytosol and organelles
Plasma membrane - Ans:-• A cell membrane; also c...
Microvilli - Ans:✔✔-• Small, finger-shaped projections of the plasma membrane that absorb materials
from the extracellular fluid
• Promote absorption by increasing the surface area exposed to the extracellular environment. A
network of microfilaments stiffens each microvillus and anchors it to the terminal web, a dense
supporting network within the underlying cytoskeleton
• Interactions between the microfilaments and the cytoskeleton produce a waving or bending action
• Movement of the microvilli circulate fluids close to the plasma membrane, bringing dissolved
substances into contact with receptors on the membrane surface
Cytoskeleton - Ans:✔✔-The cell's internal framework of filaments and fibers; A *network of
microtubules, microfilaments, intermediate filaments, and thick filaments * in the cytoplasm
Cytoplasm - Ans:✔✔-The material between the plasma membrane and the nuclear membrane
In a cell, what percentage of weight does protein contribute? - Ans:✔✔-15 - 30%
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