BCH 4024 Exam 1 questions with complete solutions

BCH 4024 Exam 1

State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Cell
membrane - correct answer ✔✔Both



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Cytoplasm -
correct answer ✔✔Both



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Nucleus -
correct answer ✔✔Eukaryotes



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Nucleoid -
correct answer ✔✔Prokaryotes



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Ribosomes -
correct answer ✔✔Both



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Capsule -
correct answer ✔✔Prokaryotes



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: ER and Golgi
- correct answer ✔✔Eukaryotes



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both:
Mitochondria - correct answer ✔✔Eukaryotes



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: DNA -
correct answer ✔✔Both



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Nuclear
Membrane - correct answer ✔✔Eukaryotes

,State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Pili for
adhesion - correct answer ✔✔Prokaryotes



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Membrane
enclosed organelles - correct answer ✔✔Eukaryotes



State whether each of the following is found in a prokaryotic cells, eukaryotic cells, or both: Separation
of energetic processes - correct answer ✔✔Eukaryotes



Chiral Carbon - correct answer ✔✔A carbon atom with four different substituents



R- and S- System - correct answer ✔✔Chemical groups are assigned by priority to classify molecules



D- and L- System - correct answer ✔✔Molecules are classified by their optical activity



Structural Isomers - correct answer ✔✔Molecules with the same atoms but different bonding, have
different properties



Enantiomers - correct answer ✔✔Molecules that are mirror images, with identical physical properties



Diasteromers - correct answer ✔✔Molecules with different physical and chemical properties



Cis - correct answer ✔✔Groups are on the same side



Trans - correct answer ✔✔Groups are on different sides



Proteins have unique binding pockets, and only certain molecules can fit into their active sites. Thus the
binding of chiral biomolecules to proteins is ______________________ , as seen in many enzymes and
receptors which bind to molecules of a specific shape. - correct answer ✔✔stereospecific

, Drugs can also interact with proteins, and they can have different ________________, with different
effects. - correct answer ✔✔enantiomers



A ______________________ of a drug has both D- and L-forms of the drug, which can sometimes have
side effects. - correct answer ✔✔racemic mixture



A(n) ___________________ has a single enantiomer, but may be more expensive. - correct answer
✔✔enantiopure drug



T or F: Energy (except as it is interconvertible with mass) can neither be created or destroyed. - correct
answer ✔✔T



T or F: Cells maintain order (positive entropy), which creates disorder in the environment (negative
entropy). - correct answer ✔✔F



T or F: The sum of entropy of the system (cell) and surroundings (environment/universe) will be positive.
- correct answer ✔✔T



T or F: Living organisms extract energy from surroundings via sunlight or chemicals to do work. - correct
answer ✔✔T



T or F: As metabolic energy is spent to do cellular work, the order of the universe increases. - correct
answer ✔✔F



T or F: Entropy describes the process of systems going towards disorder. - correct answer ✔✔T



T or F: The amount of energy added to break a bond is greater than the amount released upon its
formation. - correct answer ✔✔F



T or F: Anabolic reactions involve breaking down macromolecules and increasing disorder. - correct
answer ✔✔F