BIOL460 CHAPTER 6 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
The extracellular environment refers to...
everything outside of the cell
What does the fluid compartment of the extracellular environment do?
dissolve molecules
What provides structural support for the extracellular environment?
a matrix of proteins and polysaccharides
What fluid is derived from blood plasma?
interstitial fluid (tissue fluid)
What does the extracellular environment provide for the cell?
nourishment; waste release site; means for cell communication via secretion of
chemical regulators
What percentage of our body fluids (water) is intracellular?
67%
What percentage of our bodily fluid is extracellular?
33%
What percentage of extracellular fluid is made up of interstitial fluid?
80%
What percentage of extracellular fluid is made up of blood plasma?
20%
, What does interstitial fluid do?
connects intracellular fluid with blood plasma
What does blood transport?
oxygen, carbon dioxide, nutrients, and wastes
*hormones as well
extracellular matrix (ECM)
the substance in which animal tissue cells are embedded, consisting of protein and
polysaccharides
protein fibers
provide structural support
gel-like ground substance
acts as a cushion
integrins
glycoproteins that extend from the cell cytoskeleton and bind to the extracellular matrix
What are the four functions of transmembrane proteins?
1. relay signals
2. impart a polarity
3. affect adhesion and motility
4. affect proliferation
non-carrier mediated transport
simple diffusion and osmosis
What is a concentration gradient?
difference in the concentration of a substance from one location to another
WITH COMPLETE SOLUTIONS VERIFIED
The extracellular environment refers to...
everything outside of the cell
What does the fluid compartment of the extracellular environment do?
dissolve molecules
What provides structural support for the extracellular environment?
a matrix of proteins and polysaccharides
What fluid is derived from blood plasma?
interstitial fluid (tissue fluid)
What does the extracellular environment provide for the cell?
nourishment; waste release site; means for cell communication via secretion of
chemical regulators
What percentage of our body fluids (water) is intracellular?
67%
What percentage of our bodily fluid is extracellular?
33%
What percentage of extracellular fluid is made up of interstitial fluid?
80%
What percentage of extracellular fluid is made up of blood plasma?
20%
, What does interstitial fluid do?
connects intracellular fluid with blood plasma
What does blood transport?
oxygen, carbon dioxide, nutrients, and wastes
*hormones as well
extracellular matrix (ECM)
the substance in which animal tissue cells are embedded, consisting of protein and
polysaccharides
protein fibers
provide structural support
gel-like ground substance
acts as a cushion
integrins
glycoproteins that extend from the cell cytoskeleton and bind to the extracellular matrix
What are the four functions of transmembrane proteins?
1. relay signals
2. impart a polarity
3. affect adhesion and motility
4. affect proliferation
non-carrier mediated transport
simple diffusion and osmosis
What is a concentration gradient?
difference in the concentration of a substance from one location to another
