BIOL 189 UNLV PRACTICE TEST 2026
QUESTIONS ANSWERS GRADED A+
⩥Catabolic reactions release?
Answer: Energy
⩥Anabolic reactions need?
Answer: Energy
⩥Kinetic energy
Answer: The energy of motion
⩥What is an enzyme?
Answer: A biological catalyst that will speed up the rate of a reaction by
lowering the enrgy of activation. The enzyme is not changed nor altered
by the reactions .
⩥Non competitive inhibitor
Answer: Does not bind to activesite. It destroys it.
⩥competitive inhibitor
,Answer: Rises with the substrate and binds to the active site of the
enzyme.
⩥How to turn off an enzyme?
Answer: Non competitive and competitive inhibitor
⩥What are the three stages of cellular respiration?
Answer: Glycolysis, the krebs cycle, the electron transport
chain/oxidative phosphorylation
⩥What happens in Glycolysis?
Answer: Sugar is split into two.
⩥Where does glycolysis occur?
Answer: Cytoplasm
⩥What is the outcome in glycolysis?
Answer: 2 pyruvates and 2 NADH= ATP
⩥What happens in the Krebs cycle?
Answer: pyruvic acid is broken down into carbon dioxide in a series of
energy-extracting reactions
, ⩥Where does the Kreb cycle occur?
Answer: Matrix of Mitochondria
⩥What does the Krebs cycle produce?
Answer: NADH and FADH2 and 2 ATP
⩥Steps of Electron Transport Chain
Answer: 1) Electrons from the electron carriers (NADH & FADH2) are
sent through a series of molecules to create 32 ATP
2) The electrons, once at the end of the chain, will attach to hydrogen
ions and oxygen atoms to form water
⩥Where does the ETC occur?
Answer: the inner membrane of the mitochondria
⩥Flow of electrons along ETC causes
Answer: pumping of H+ into intermembrane space causing Hydrogen
ion build up
⩥What turns off an Enzyme?
Answer: ATP
⩥What turns on an Enzyme?
QUESTIONS ANSWERS GRADED A+
⩥Catabolic reactions release?
Answer: Energy
⩥Anabolic reactions need?
Answer: Energy
⩥Kinetic energy
Answer: The energy of motion
⩥What is an enzyme?
Answer: A biological catalyst that will speed up the rate of a reaction by
lowering the enrgy of activation. The enzyme is not changed nor altered
by the reactions .
⩥Non competitive inhibitor
Answer: Does not bind to activesite. It destroys it.
⩥competitive inhibitor
,Answer: Rises with the substrate and binds to the active site of the
enzyme.
⩥How to turn off an enzyme?
Answer: Non competitive and competitive inhibitor
⩥What are the three stages of cellular respiration?
Answer: Glycolysis, the krebs cycle, the electron transport
chain/oxidative phosphorylation
⩥What happens in Glycolysis?
Answer: Sugar is split into two.
⩥Where does glycolysis occur?
Answer: Cytoplasm
⩥What is the outcome in glycolysis?
Answer: 2 pyruvates and 2 NADH= ATP
⩥What happens in the Krebs cycle?
Answer: pyruvic acid is broken down into carbon dioxide in a series of
energy-extracting reactions
, ⩥Where does the Kreb cycle occur?
Answer: Matrix of Mitochondria
⩥What does the Krebs cycle produce?
Answer: NADH and FADH2 and 2 ATP
⩥Steps of Electron Transport Chain
Answer: 1) Electrons from the electron carriers (NADH & FADH2) are
sent through a series of molecules to create 32 ATP
2) The electrons, once at the end of the chain, will attach to hydrogen
ions and oxygen atoms to form water
⩥Where does the ETC occur?
Answer: the inner membrane of the mitochondria
⩥Flow of electrons along ETC causes
Answer: pumping of H+ into intermembrane space causing Hydrogen
ion build up
⩥What turns off an Enzyme?
Answer: ATP
⩥What turns on an Enzyme?
