Principles of Biology- final exam review
UPDATED ACTUAL Exam Questions and
CORRECT Answers
What substance speeds up the rate of a chemical reaction? - CORRECT ANSWER -
catalyst
Enzymes affect the reaction in cells by changing what? - CORRECT ANSWER - The
speed in which the reaction happens
Starches, glycogen, and sugars are examples of what organic compound? - CORRECT
ANSWER - Carbohydrates
What is the chemical formula for carbohydrates? - CORRECT ANSWER - CH2O
What are lipids composed of? - CORRECT ANSWER - Carbon, hydrogen, and oxygen
What is the structure of a protein polymer? - CORRECT ANSWER - 3 amino acids
What are the primary functions of lipids? - CORRECT ANSWER - Broken down for
enerfy, part of cell structure
What are the primary functions of carbohydrates? - CORRECT ANSWER - Broken down
to make chemical energy
What are the primary functions of nucleic acids? - CORRECT ANSWER - Give
instructions to build proteins
, Macromolecules are formed when small units join together to form a larger molecule called a
______. - CORRECT ANSWER - Polymer
What does the lock and key model mean when referring to enzymes? - CORRECT
ANSWER - Each enzymes shape only allows certain reactants to bind to it
What do enzymes bind to? - CORRECT ANSWER - Proteins
Of the four main organic compounds, which contains the most energy? - CORRECT
ANSWER - Lipids
What happens when chemical bonds are broken? - CORRECT ANSWER - Energy is
released
What cellular transport requires no energy to move materials through the cell membrane? -
CORRECT ANSWER - Passive transport
How is a eukaryote different from a prokaryote? - CORRECT ANSWER - Eukaryotes
have a nucleus and organelles
What is the function of the mitochondria? - CORRECT ANSWER - Supplies energy to the
cell
What structures are found in plant cells but not animal cells? - CORRECT ANSWER -
Chloroplast and cell wall
What two organelles are sites of energy conversion? - CORRECT ANSWER -
Mitochondria and chloroplast
Which organelle binds proteins sing instructions that come from the nucleus? - CORRECT
ANSWER - Ribosomes
UPDATED ACTUAL Exam Questions and
CORRECT Answers
What substance speeds up the rate of a chemical reaction? - CORRECT ANSWER -
catalyst
Enzymes affect the reaction in cells by changing what? - CORRECT ANSWER - The
speed in which the reaction happens
Starches, glycogen, and sugars are examples of what organic compound? - CORRECT
ANSWER - Carbohydrates
What is the chemical formula for carbohydrates? - CORRECT ANSWER - CH2O
What are lipids composed of? - CORRECT ANSWER - Carbon, hydrogen, and oxygen
What is the structure of a protein polymer? - CORRECT ANSWER - 3 amino acids
What are the primary functions of lipids? - CORRECT ANSWER - Broken down for
enerfy, part of cell structure
What are the primary functions of carbohydrates? - CORRECT ANSWER - Broken down
to make chemical energy
What are the primary functions of nucleic acids? - CORRECT ANSWER - Give
instructions to build proteins
, Macromolecules are formed when small units join together to form a larger molecule called a
______. - CORRECT ANSWER - Polymer
What does the lock and key model mean when referring to enzymes? - CORRECT
ANSWER - Each enzymes shape only allows certain reactants to bind to it
What do enzymes bind to? - CORRECT ANSWER - Proteins
Of the four main organic compounds, which contains the most energy? - CORRECT
ANSWER - Lipids
What happens when chemical bonds are broken? - CORRECT ANSWER - Energy is
released
What cellular transport requires no energy to move materials through the cell membrane? -
CORRECT ANSWER - Passive transport
How is a eukaryote different from a prokaryote? - CORRECT ANSWER - Eukaryotes
have a nucleus and organelles
What is the function of the mitochondria? - CORRECT ANSWER - Supplies energy to the
cell
What structures are found in plant cells but not animal cells? - CORRECT ANSWER -
Chloroplast and cell wall
What two organelles are sites of energy conversion? - CORRECT ANSWER -
Mitochondria and chloroplast
Which organelle binds proteins sing instructions that come from the nucleus? - CORRECT
ANSWER - Ribosomes
