Praxis Biology (5236) Secrets Study Guide With Exam
Questions And Correct Answers With Rationales
Praxis Biology (5236) – Practice Module
Questions 1–30
Q1.
Which macromolecule is the primary source of immediate energy for cells?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic acids
Rationale:
Carbohydrates, especially glucose, are quickly broken down to produce ATP.
Q2.
Which organelle is responsible for ATP production in eukaryotic cells?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Golgi apparatus
Rationale:
Mitochondria carry out cellular respiration, producing ATP.
Q3.
Which process converts light energy into chemical energy?
A. Cellular respiration
B. Fermentation
C. Photosynthesis
D. Transpiration
Rationale:
Photosynthesis captures light energy to form glucose.
,Q4.
Which molecule carries genetic information?
A. RNA
B. Protein
C. DNA
D. ATP
Rationale:
DNA stores hereditary genetic information.
Q5.
What is the function of enzymes?
A. Store energy
B. Increase activation energy
C. Speed up chemical reactions
D. Break down DNA
Rationale:
Enzymes act as biological catalysts, lowering activation energy.
Q6.
Which level of biological organization comes immediately after tissues?
A. Cells
B. Organs
C. Organ systems
D. Organisms
Rationale:
Tissues combine to form organs.
Q7.
Which process produces gametes?
A. Mitosis
B. Meiosis
C. Binary fission
D. Fertilization
Rationale:
Meiosis produces haploid sex cells.
, Q8.
Which phase of mitosis involves separation of sister chromatids?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Rationale:
Anaphase pulls chromatids apart toward opposite poles.
Q9.
Which blood type is considered the universal donor?
A. AB+
B. A−
C. O−
D. O+
Rationale:
O− blood lacks antigens that trigger immune reactions.
Q10.
Which structure regulates what enters and exits the cell?
A. Cell wall
B. Nucleus
C. Cell membrane
D. Cytoplasm
Rationale:
The cell membrane maintains homeostasis.
Q11.
Which gas is released during photosynthesis?
A. Carbon dioxide
B. Nitrogen
C. Oxygen
D. Hydrogen
Rationale:
Oxygen is a byproduct of the light-dependent reactions.
Questions And Correct Answers With Rationales
Praxis Biology (5236) – Practice Module
Questions 1–30
Q1.
Which macromolecule is the primary source of immediate energy for cells?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic acids
Rationale:
Carbohydrates, especially glucose, are quickly broken down to produce ATP.
Q2.
Which organelle is responsible for ATP production in eukaryotic cells?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Golgi apparatus
Rationale:
Mitochondria carry out cellular respiration, producing ATP.
Q3.
Which process converts light energy into chemical energy?
A. Cellular respiration
B. Fermentation
C. Photosynthesis
D. Transpiration
Rationale:
Photosynthesis captures light energy to form glucose.
,Q4.
Which molecule carries genetic information?
A. RNA
B. Protein
C. DNA
D. ATP
Rationale:
DNA stores hereditary genetic information.
Q5.
What is the function of enzymes?
A. Store energy
B. Increase activation energy
C. Speed up chemical reactions
D. Break down DNA
Rationale:
Enzymes act as biological catalysts, lowering activation energy.
Q6.
Which level of biological organization comes immediately after tissues?
A. Cells
B. Organs
C. Organ systems
D. Organisms
Rationale:
Tissues combine to form organs.
Q7.
Which process produces gametes?
A. Mitosis
B. Meiosis
C. Binary fission
D. Fertilization
Rationale:
Meiosis produces haploid sex cells.
, Q8.
Which phase of mitosis involves separation of sister chromatids?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Rationale:
Anaphase pulls chromatids apart toward opposite poles.
Q9.
Which blood type is considered the universal donor?
A. AB+
B. A−
C. O−
D. O+
Rationale:
O− blood lacks antigens that trigger immune reactions.
Q10.
Which structure regulates what enters and exits the cell?
A. Cell wall
B. Nucleus
C. Cell membrane
D. Cytoplasm
Rationale:
The cell membrane maintains homeostasis.
Q11.
Which gas is released during photosynthesis?
A. Carbon dioxide
B. Nitrogen
C. Oxygen
D. Hydrogen
Rationale:
Oxygen is a byproduct of the light-dependent reactions.
