AP BioLOGY Final EXAM 250 QUESTIONS AND CORRECT
ANSWERS 2025 LATEST VERSION ALL YOU NEED TO PASS
BIOLOGY EXAM//ALREADY GRADED A+
The presence of which of the following features distinguishes prokaryotic cells from eukaryotic cells?
A) cytoplasm
B) nucleus
C) ribosomes
D) plasma membrane
E) DNA - ANSWER-Nucleus
Endergonic reactions
A) result in products with less energy than the reactants
B) require a net input of energy
C) occur in the breakdown of glucose
D) are used by cells to provide enegry for biological reactions
E) break down large molecules into smaller molecules - ANSWER-Require a net input of energy
ATP contains
A) alanine
B) argine
C) ribose
D) tyrosine
E) glucose - ANSWER-Ribose
ATP contains
A) adenine
B) cytosine
C) uracil
,D) thymine
E) guanine - ANSWER-Adenine
Which of the following is NOT true of enzyme behavior.
A) Enzyme shape may change during catalysis
B) The active site of an enzyme orients its substrate molecules, thereby promoting interaction of
their reactive parts
C) All enzymes have an active site where substrates are temporarily bound
D) Each enzyme can catalyze a wide variety of reactions
E) Enzyme activity is affected by pH and temperature - ANSWER-Each enzyme can catalyze a wide
variety of reactions
Which of the following statements is false?
A) Enzymes catalyze reversible reactions in either direction
B) Enzymes are highly specific
C) Most enzymes are protein molecules
D) Enzymes allow some reactions to occur that would never occur without them
E) Enzymes may temporarily modified during their involvement with the substrate - ANSWER-
Enzymes allow some reactions to occur that would never occur without them
The activation energy for a reaction
A) is less when enzymes are present
B) allows greater interaction of substrate with the active site
C) is needed to begin a reaction
D) puts the substrate at its transition state
E) is all of these - ANSWER-is all of these
The active site of an enzyme
A) is where the coenzyme is located
B) is a specific bulge or protuberance on an enzyme
,C) is a groove or crevice in the structure of the enzyme complementary to the substrate
D) will react with only one substrate no matter how many molecules may resemble the shape of the
substrate
E) rigidly resists the alteration of its shape - ANSWER-is a groove or crevice in the structure of the
enzyme complementary to the substrate
An enzyme is through to optimize the fit between substrates by restraining and stretching or
squeezing them into certain shapes and moving them to the transition state as describe by the
_______ model of enzyme activity. - ANSWER-Induced-fit
Enzymatic reactions can be controlled by
A) the amount of substrates available
B) the concentration of products
C) activation of enzymes
D) inhibition of enzymes
E) all of these - ANSWER-All of these
In some cases, inhibitors or activators of enzyme catalyzed reactions act by _________. - ANSWER-
Reversibly binding to the enzyme's allosteric site
Which of the following statements is true?
A) the products of a reaction can have less energy than the reactants
B) the products of a reaction can have more energy than the reactants
C) reversible reactions tend to approach equilibrium
D) most reactions are reversible
E) all fo these are true - ANSWER-All of these are true
Division of the nucleus and eukaryotic cells into two identical cells is called _________. - ANSWER-
Mitosis
Strictly speaking, mitosis and meiosis are divisions of the
A) Nucleus
, B) Cytoplasm
C) Chromosomes
D) Nucleus and Chromosomes
E) Nucleus, cytoplasm, and chromosomes - ANSWER-Nucleus
Which of the following is NOT associated with meiosis?
A) Spore formation
B) Somatic cells
C) Sexual Reproduction
D) Sperm and Egg
E) Germ cells - ANSWER-Somatic cells
Chromatids that are attached at the centromere are called what kind of chromatids?
A) Mother
B) Daughter
C) Sister
D) Programmed
E) Either mother or daughter - ANSWER-Sister
Chromosomes become visible during prophase of mitosis as a result of
A) Uncoiling
B) DNA synthesis
C) Condensation
D) Chromatid duplication
E) Addition of proteins to the DNA - ANSWER-Condensation
DNA Replication occurs
A) Between the gap phases of interphase
B) Immediately before prophase of mitosis
C) During prophase of mitosis
ANSWERS 2025 LATEST VERSION ALL YOU NEED TO PASS
BIOLOGY EXAM//ALREADY GRADED A+
The presence of which of the following features distinguishes prokaryotic cells from eukaryotic cells?
A) cytoplasm
B) nucleus
C) ribosomes
D) plasma membrane
E) DNA - ANSWER-Nucleus
Endergonic reactions
A) result in products with less energy than the reactants
B) require a net input of energy
C) occur in the breakdown of glucose
D) are used by cells to provide enegry for biological reactions
E) break down large molecules into smaller molecules - ANSWER-Require a net input of energy
ATP contains
A) alanine
B) argine
C) ribose
D) tyrosine
E) glucose - ANSWER-Ribose
ATP contains
A) adenine
B) cytosine
C) uracil
,D) thymine
E) guanine - ANSWER-Adenine
Which of the following is NOT true of enzyme behavior.
A) Enzyme shape may change during catalysis
B) The active site of an enzyme orients its substrate molecules, thereby promoting interaction of
their reactive parts
C) All enzymes have an active site where substrates are temporarily bound
D) Each enzyme can catalyze a wide variety of reactions
E) Enzyme activity is affected by pH and temperature - ANSWER-Each enzyme can catalyze a wide
variety of reactions
Which of the following statements is false?
A) Enzymes catalyze reversible reactions in either direction
B) Enzymes are highly specific
C) Most enzymes are protein molecules
D) Enzymes allow some reactions to occur that would never occur without them
E) Enzymes may temporarily modified during their involvement with the substrate - ANSWER-
Enzymes allow some reactions to occur that would never occur without them
The activation energy for a reaction
A) is less when enzymes are present
B) allows greater interaction of substrate with the active site
C) is needed to begin a reaction
D) puts the substrate at its transition state
E) is all of these - ANSWER-is all of these
The active site of an enzyme
A) is where the coenzyme is located
B) is a specific bulge or protuberance on an enzyme
,C) is a groove or crevice in the structure of the enzyme complementary to the substrate
D) will react with only one substrate no matter how many molecules may resemble the shape of the
substrate
E) rigidly resists the alteration of its shape - ANSWER-is a groove or crevice in the structure of the
enzyme complementary to the substrate
An enzyme is through to optimize the fit between substrates by restraining and stretching or
squeezing them into certain shapes and moving them to the transition state as describe by the
_______ model of enzyme activity. - ANSWER-Induced-fit
Enzymatic reactions can be controlled by
A) the amount of substrates available
B) the concentration of products
C) activation of enzymes
D) inhibition of enzymes
E) all of these - ANSWER-All of these
In some cases, inhibitors or activators of enzyme catalyzed reactions act by _________. - ANSWER-
Reversibly binding to the enzyme's allosteric site
Which of the following statements is true?
A) the products of a reaction can have less energy than the reactants
B) the products of a reaction can have more energy than the reactants
C) reversible reactions tend to approach equilibrium
D) most reactions are reversible
E) all fo these are true - ANSWER-All of these are true
Division of the nucleus and eukaryotic cells into two identical cells is called _________. - ANSWER-
Mitosis
Strictly speaking, mitosis and meiosis are divisions of the
A) Nucleus
, B) Cytoplasm
C) Chromosomes
D) Nucleus and Chromosomes
E) Nucleus, cytoplasm, and chromosomes - ANSWER-Nucleus
Which of the following is NOT associated with meiosis?
A) Spore formation
B) Somatic cells
C) Sexual Reproduction
D) Sperm and Egg
E) Germ cells - ANSWER-Somatic cells
Chromatids that are attached at the centromere are called what kind of chromatids?
A) Mother
B) Daughter
C) Sister
D) Programmed
E) Either mother or daughter - ANSWER-Sister
Chromosomes become visible during prophase of mitosis as a result of
A) Uncoiling
B) DNA synthesis
C) Condensation
D) Chromatid duplication
E) Addition of proteins to the DNA - ANSWER-Condensation
DNA Replication occurs
A) Between the gap phases of interphase
B) Immediately before prophase of mitosis
C) During prophase of mitosis
