BIOL 3204 EXAM 2025 QUESTIONS AND
ANSWERS GRADED A+
Homeostasis is maintained by positive feedback.
False
Glycosidases are enzymes that breakdown lipids.
False
Lipase breaks down lipids
An exergonic reaction releases energy.
True
Na+ can move across the phospholipid bilayer by passive diffusion.
False
Intracellular and extracellular fluids are in osmotic equilibrium.
,True
Small lipophilic molecules can move across the phospholipid bilayer by passive
diffusion.
True
The resting membrane potential of most cells is electroneutral (0 mV).
False.
It is -70 mV
Secretory vesicles are formed from the Golgi apparatus.
True
ATP is required during primary active transport of an ion or molecule across a
membrane.
True
Cytosol is considered an extracellular fluid.
,False.
It is inside the cell (fluid surrounding organelles)
The reaction [ A --> B + C + energy ] is an example of a catabolic reaction.
True
Na+ and Cl- are typically at higher concentrations in extracellular fluid compared
to intracellular fluid.
True
Na+ and Cl- = Outside
K+ = Inside
A disaccharide is a type of nucleotide.
False.
sugar
Glycolysis takes place within the mitochondria.
False
Occurs in cytoplasm
, The tertiary structure of a protein refers to the interaction between multiple folded
polypeptide chains.
False
Allosteric inhibitors decrease enzyme activity by directly competing with the
substrate for the active site of an enzyme.
False
Messenger RNA stays within the nucleus.
False
Where does protein synthesis occur?
- smooth endoplasmic reticulum
- ribosome
- nucleus
- golgi apparatus
Ribosome
ANSWERS GRADED A+
Homeostasis is maintained by positive feedback.
False
Glycosidases are enzymes that breakdown lipids.
False
Lipase breaks down lipids
An exergonic reaction releases energy.
True
Na+ can move across the phospholipid bilayer by passive diffusion.
False
Intracellular and extracellular fluids are in osmotic equilibrium.
,True
Small lipophilic molecules can move across the phospholipid bilayer by passive
diffusion.
True
The resting membrane potential of most cells is electroneutral (0 mV).
False.
It is -70 mV
Secretory vesicles are formed from the Golgi apparatus.
True
ATP is required during primary active transport of an ion or molecule across a
membrane.
True
Cytosol is considered an extracellular fluid.
,False.
It is inside the cell (fluid surrounding organelles)
The reaction [ A --> B + C + energy ] is an example of a catabolic reaction.
True
Na+ and Cl- are typically at higher concentrations in extracellular fluid compared
to intracellular fluid.
True
Na+ and Cl- = Outside
K+ = Inside
A disaccharide is a type of nucleotide.
False.
sugar
Glycolysis takes place within the mitochondria.
False
Occurs in cytoplasm
, The tertiary structure of a protein refers to the interaction between multiple folded
polypeptide chains.
False
Allosteric inhibitors decrease enzyme activity by directly competing with the
substrate for the active site of an enzyme.
False
Messenger RNA stays within the nucleus.
False
Where does protein synthesis occur?
- smooth endoplasmic reticulum
- ribosome
- nucleus
- golgi apparatus
Ribosome
