CHAMBERLAIN BIOS251 EXAM 2 QUESTIONS
WITH CORRECT ANSWERS 2026
Metabolism - CORRECT ANSWER -Sum of all chemical reactions in the body
Anabolism (synthesis reaction) - CORRECT ANSWER -Builds molecules
catabolism (decomposition reaction) - CORRECT ANSWER -Break down molecules
Cellular respiration - CORRECT ANSWER --metabolic reaction in cells
-converts glucose to ATP (energy)
Aerobic respiration - CORRECT ANSWER --Requires oxygen
-creates CO2, water, and ATP
Cell structure sub parts - CORRECT ANSWER -1. Plasma (cell) membrane
2. Cytoplasm (cytosol + organelles)
Plasma membrane STRUCTURE - CORRECT ANSWER --defines boundaries of the cell
-intracellular fluid
-extracellular fluid
Phospholipids - CORRECT ANSWER -
Layers of lipids, Ampipathic molecules (both hydrophobic + hydrophilic)
Two types of membrane proteins - CORRECT ANSWER -1. integral proteins
2. peripheral proteins
Integral (transmembrane) proteins - CORRECT ANSWER --span ENTIRE DEPTH of plasma membrane
-ampipathic
, -do not dissociate from plasma membrane
Peripheral proteins - CORRECT ANSWER --located on cytosolic side
-CAN dissociate from membrane
Receptor function (membrane protein) - CORRECT ANSWER -
Binds to chemical messengers such as hormones sent by other cells
Enzyme function (membrane protein) - CORRECT ANSWER -
Breaks down a chemical messenger and terminates it's effect
Gated channel function (membrane protein) - CORRECT ANSWER -
Gate that opens and closes to allow select solutes through
Channel function (membrane protein) - CORRECT ANSWER -Constantly open and allows solutes through
Cell-identity marker (membrane protein) - CORRECT ANSWER -
Glycoprotein distinguishing body's own cells from foreign cells
Cell-adhesion molecule (membrane protein) - CORRECT ANSWER -Binds one cell to another
Functions of plasma membrane - CORRECT ANSWER -1. Define boundaries of cell
2. Provide structural support for fell
3. Provide protection for cell
4. Regulate transport of substances in + out of cell
5. Monitor and detect changes in extra cellular fluid
Gradient across plasma membrane - CORRECT ANSWER -
Difference in concentration of s chemical between one side of plasma membrane to another
WITH CORRECT ANSWERS 2026
Metabolism - CORRECT ANSWER -Sum of all chemical reactions in the body
Anabolism (synthesis reaction) - CORRECT ANSWER -Builds molecules
catabolism (decomposition reaction) - CORRECT ANSWER -Break down molecules
Cellular respiration - CORRECT ANSWER --metabolic reaction in cells
-converts glucose to ATP (energy)
Aerobic respiration - CORRECT ANSWER --Requires oxygen
-creates CO2, water, and ATP
Cell structure sub parts - CORRECT ANSWER -1. Plasma (cell) membrane
2. Cytoplasm (cytosol + organelles)
Plasma membrane STRUCTURE - CORRECT ANSWER --defines boundaries of the cell
-intracellular fluid
-extracellular fluid
Phospholipids - CORRECT ANSWER -
Layers of lipids, Ampipathic molecules (both hydrophobic + hydrophilic)
Two types of membrane proteins - CORRECT ANSWER -1. integral proteins
2. peripheral proteins
Integral (transmembrane) proteins - CORRECT ANSWER --span ENTIRE DEPTH of plasma membrane
-ampipathic
, -do not dissociate from plasma membrane
Peripheral proteins - CORRECT ANSWER --located on cytosolic side
-CAN dissociate from membrane
Receptor function (membrane protein) - CORRECT ANSWER -
Binds to chemical messengers such as hormones sent by other cells
Enzyme function (membrane protein) - CORRECT ANSWER -
Breaks down a chemical messenger and terminates it's effect
Gated channel function (membrane protein) - CORRECT ANSWER -
Gate that opens and closes to allow select solutes through
Channel function (membrane protein) - CORRECT ANSWER -Constantly open and allows solutes through
Cell-identity marker (membrane protein) - CORRECT ANSWER -
Glycoprotein distinguishing body's own cells from foreign cells
Cell-adhesion molecule (membrane protein) - CORRECT ANSWER -Binds one cell to another
Functions of plasma membrane - CORRECT ANSWER -1. Define boundaries of cell
2. Provide structural support for fell
3. Provide protection for cell
4. Regulate transport of substances in + out of cell
5. Monitor and detect changes in extra cellular fluid
Gradient across plasma membrane - CORRECT ANSWER -
Difference in concentration of s chemical between one side of plasma membrane to another
