Exam 2 Flashcards
Which is a correct statement about the plasma membrane?
A. Its middle portion is lipophobic
B. Its integral proteins must be transmembrane and could be ampipathic
C. Its formation does not rely on our Critical Eq. #1
D. It has a greater number of phospholipids than cholesterol
C. Its formation does not rely on our Critical Eq. #1
After studying the body’s fluid compartments, Libby was about to correctly state that ___ is found in ___ cells:
A. Extracellular fluid, within
B. Intrastitial fluid, surrounding
C. The largest one, within
D. The smallest one, with the glycocalyx of
C. The largest one, within
Buster Bronco was shrunk to the size of an ion. This horse then found itself galloping from one cell to second but never being in the same fluid compartment as a paracrine or an endocrine. Consequently, Buster realized that his journey was facilitated by:
A. Connexins
B. Connections that block extracellular fluid flow
C. Desmosomes
D. Peripheral proteins
A. Connexins
While preparing for this assessment, Carmen combines concepts across days to create which correct statement?
A. The interstitial fluid is viscous and is a component of the intracellular matrix
B. Endocrines travel via the mid-sized fluid compartment to reach an effector
C. Both paracrines and neurotransmitters travel via the extracellular fluid
D. When the volume of the smallest fluid compartment is doubled, the blood pressure will decrease
C. Both paracrines and neurotransmitters travel via the extracellular fluid
Daniel Browning Smith (aka Rubberboy) has a genetic disorder called Ehlers-Danlos syndrome which includes problems producing connective proteins of the extracellular matrix. Which protein could you expect that Daniel is not producing properly?
A. Fibroblast
B. Elastin
C. Collagectin
D. All are correct
B. Elastin
The presence of cholesterol immediately changes the movement between which two fluid compartments?
A. Smallest and midsized
B. Largest and midsized
C. Plasma and intracellular fluid
D. Interstitial fluid and extracellular fluid
B. Largest and midsized
As Brutus recently learned that he had torn some of his fascia, he correctly recalled that fascia is the term for a layer of connective cells that is fibrous and commonly found around muscles, blood vessels, and nerves. Fascia would best be described as:
A. An organ
B. Tissue
C. The extracellular matrix
D. A desmosome
B. Tissue
Free radicals have a ____ number of electrons and are neutralized by ____
A. Odd, oxidants
B. Odd, donors
C. Even, oxidants
D. Even, donors
B. Odd, donors
Which is a correct statement about the bonds with the human body?
A. Ionic bonds are sometimes weaker than hydrophobic interactions
B. Covalent bonds always involve the sharing of electrons between the elements
C. Hydrophobic interactions occur due to the association of polars to avoid water
D. Oxygen (O2) is an example of covalent bonding and lipophobic polarity
B. Covalent bonds always involve the sharing of electrons between the elements
Which is a correct statement about the extracellular matrix?
A. It is primarily created by connective cells called matrixocytes
B. The lipophobic and hydrogen-containing sugar structures cause the nearby water to be more cohesive
C. Both statements are correct
D. Neither statement is correct
B. The lipophobic and hydrogen-containing sugar structures cause the nearby water to be more cohesive
Dr Scarlet’s Patient X is experiencing flu-like symptoms. Consequently, Dr. S correctly stated that Patient X:
A. Should be taking antioxidant supplements
B. Needs to have increasing free radical levels
C. Both statements are correct
D. Neither statement is correct
B. Needs to have increasing free radical levels
Dr. Gray is viewing a cell from a sample taken of Patient Y’s skin. Dr. Gray correctly notes that this cell:
A. Might be an epithelial cell
B. Would have the same lipodome as a cell from Patient Y’s heart
C. Both statements are correct
D. Neither statement is correct
A. Might be an epithelial cell
Which is a correct statement about phospholipids?
A. They are found in all cells but not all tissues
B. They have a partial charge associated with them
C. Both statements are correct
D. Neither statement is correct
B. They have a partial charge associated with them
Which is a correct statement about the glycocalyx?
A. It does not associate with the largest fluid compartment
B. Its removal would not impact the cell density
C. Both statements are correct
D. Neither statement is correct
A. It does not associate with the largest fluid compartment
Allison decided to make a snack mix based on the plasma membrane components. Her ingredients were M&Ms (phospholipids), pretzels (cholesterols), and potato chips (proteins). Consequently, her correctly snack mix:
A. Had sugar chains attached to only the M&Ms and potato chips
B. Contained significantly more pretzels than M&Ms
C. Both statements are correct
D. Neither statement is correct
A. Had sugar chains attached to only the M&Ms and potato chips
