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Chemical and Physical Foundations of Biological Systems – MCAT Questions with Correct Answers
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What does a vector measure? Correct Answer-magnitude/size and direction What do scalars measure? Correct Answer-Magnitude/size What is distance? Correct Answer-how far something has traveled What is speed? Correct Answer-how fast something is going What is velocity? Correct Answer-how f...

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  • October 6, 2024
  • 41
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • chemical and physical foundations of biological sy

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  • MCAT
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Chemical and Physical Foundations of Biological
Systems – MCAT Questions with Correct Answers
What does a vector measure? Correct Answer-magnitude/size and
direction


What do scalars measure? Correct Answer-Magnitude/size


What is distance? Correct Answer-how far something has traveled


What is speed? Correct Answer-how fast something is going


What is velocity? Correct Answer-how fast something is going in a
certain direction (Displacement/time)


What is a vector sum? Correct Answer-addition if vectors together


What is the rate of speed? Correct Answer-distance over time


What is instantaneous speed? Correct Answer-Velocity of an object at a
particular time


What is acceleration? Correct Answer-the change in velocity over time

,What is Newtons 1st Law of Motion? Correct Answer-an object remains
at rest or moving uniformly forward unless acted on by another force


What is Newtons 2nd Law of Motion? Correct Answer-Force equals
mass times acceleration


What is Newtons 3rd Law of Motion? Correct Answer-For every action
there is an equal and opposite reaction


What is center if mass? Correct Answer-point where an objects mass is
evenly distributed around


What is torque? Correct Answer-force times distance on the moment
arm


What is an Acid/Base Catalysis? Correct Answer-When enzymes act as
either acids or bases


What is a covalent catalysis? Correct Answer-when enzymes form a
covalent bond


What is an electrostatic catalysis? Correct Answer-when enzymes help
to stabilize charges to help the substance work better

,What is the proximity and orientation effect? Correct Answer-when
enzymes that are close to substrates that are in the correct orientation
bind


What is the purpose of enzymes? Correct Answer-increase the rate if
biological reactions


What are the five stages of Enzyme Binding? Correct Answer-S1:
Separated enzyme and substrate
S2: initial binding of the E and S
S3: induced fit of the E and S
S4: Reaction begins to split S from E
S5: Products are created and released from E


What is an active site? Correct Answer-Where reactions take place on an
enzyme


What is an allosteric site? Correct Answer-Where regulation takes place
on an enzyme


What does an allosteric inhibitor do? Correct Answer-decrease
enzymatic activity


What does an allosteric activator do? Correct Answer-increase
enzymatic activity

, What are the six different types if enzymes? Correct Answer--
Transferase
- Ligase
- Oxidoreductase
- Isomerase
- Hydrolase
- Lyase


What is the function of a transferase? Correct Answer-transfers a
functional group from one molecule to another


What is the function of a Ligase? Correct Answer-Catalyzes a reaction
between two molecules to form a complex between the two


What is the function of a oxidoreductase? Correct Answer-transfers
electrons from one molecule to another, in either the forward or reverse
reactions


What is the function of an Isomerase? Correct Answer-Converts a
molecule into one of its isomers


What is the function of a Hydrolase? Correct Answer-Use water to
cleave a molecule into two different molecules

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