DAT BIOLOGY PRACTICE EXAM QUESTIONS AND ANSWERS
LATEST UPDATED 2024/2025 A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT VERIFIED BEST GRADED TO SCORE
A+ FOR SUCCESS
The exchange of oxygen for carbon dioxide and water vapor at the alveolus occurs by
A. Active transport
B. Passive diffusion
C. Pinocytosis
D. Phagocytosis
E. Facilitated diffusion - CORRECT ANSWERS B. Passive diffusion
Explanation: Each of the compounds listed, oxygen, carbon dioxide, and water, are permeable
to the cell membrane and do not require transport proteins. This eliminates A and E. Each
compound travels down its respective concentration gradients, and does so by passive diffusion
Which of the following decreases during cellular cleavage?
A. Nuclear-to-cytoplasmic-material ratio
B. Surface-to-volume ratio of each cell
C. Nutrient and gas exchange
D. Cell size
E. Number of cells - CORRECT ANSWERS D. Cell Size
Explanation: Since the amount of cytoplasm in the group of cells does not change with these
rapid divisions, the volume of the cells decreases, increasing the surface-to-volume ratio and
therefore the amount of nutrient and has exchange that each cell can participate in. It also
increases the nuclear-to-cytoplasmic ratio, not because the amount of nuclear material is
changing, but because the amount of cytoplasmic material present in each cell continues to
decrease while the amount of nuclear material remains relatively consistent between cells
In the process of glycolysis
, DAT BIOLOGY PRACTICE EXAM QUESTIONS AND ANSWERS
LATEST UPDATED 2024/2025 A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT VERIFIED BEST GRADED TO SCORE
A+ FOR SUCCESS
A. NAD+ is reduced to NADH
B. The final product is acetyl coenzyme A
C. Oxygen is required for maximal ATP production
D. There is a net production of 4 ATP per glucose molecule
E. Fructose-1,6-bisphosphate is converted into acetyl coenzyme A - CORRECT ANSWERS
A. NAD+ is reduced to NADH
Explanation: The final product of glycolysis is pyruvate, not Acetyl-CoA. Glycolysis does not
require oxygen, it is anaerobic. There is a net production of 2 ATP per glucose molecule.
Glycolysis is an anaerobic series of reactions that occurs in the cytoplasm that oxidizes glucose
to pyruvate
The raw materials of the earth's primitive environment (the "primordial soup" did not include
A. Phosphorus
B. Salts
C. Methanol
D. Water
E. Ammonia - CORRECT ANSWERS A. Phosphorus
Explanation: Organic molecules such as sugars and amino acids were synthesize in a primordial
environment that contained simple inorganic and organic compounds including salts, methane,
ammonia, hydrogen, and water
Muscle movement on the cellular level is initiated by the release of Ca2+ from the terminal
cistern. Terminal cistern are associated with
A. Sarcoplasmic reticulum
LATEST UPDATED 2024/2025 A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT VERIFIED BEST GRADED TO SCORE
A+ FOR SUCCESS
The exchange of oxygen for carbon dioxide and water vapor at the alveolus occurs by
A. Active transport
B. Passive diffusion
C. Pinocytosis
D. Phagocytosis
E. Facilitated diffusion - CORRECT ANSWERS B. Passive diffusion
Explanation: Each of the compounds listed, oxygen, carbon dioxide, and water, are permeable
to the cell membrane and do not require transport proteins. This eliminates A and E. Each
compound travels down its respective concentration gradients, and does so by passive diffusion
Which of the following decreases during cellular cleavage?
A. Nuclear-to-cytoplasmic-material ratio
B. Surface-to-volume ratio of each cell
C. Nutrient and gas exchange
D. Cell size
E. Number of cells - CORRECT ANSWERS D. Cell Size
Explanation: Since the amount of cytoplasm in the group of cells does not change with these
rapid divisions, the volume of the cells decreases, increasing the surface-to-volume ratio and
therefore the amount of nutrient and has exchange that each cell can participate in. It also
increases the nuclear-to-cytoplasmic ratio, not because the amount of nuclear material is
changing, but because the amount of cytoplasmic material present in each cell continues to
decrease while the amount of nuclear material remains relatively consistent between cells
In the process of glycolysis
, DAT BIOLOGY PRACTICE EXAM QUESTIONS AND ANSWERS
LATEST UPDATED 2024/2025 A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT VERIFIED BEST GRADED TO SCORE
A+ FOR SUCCESS
A. NAD+ is reduced to NADH
B. The final product is acetyl coenzyme A
C. Oxygen is required for maximal ATP production
D. There is a net production of 4 ATP per glucose molecule
E. Fructose-1,6-bisphosphate is converted into acetyl coenzyme A - CORRECT ANSWERS
A. NAD+ is reduced to NADH
Explanation: The final product of glycolysis is pyruvate, not Acetyl-CoA. Glycolysis does not
require oxygen, it is anaerobic. There is a net production of 2 ATP per glucose molecule.
Glycolysis is an anaerobic series of reactions that occurs in the cytoplasm that oxidizes glucose
to pyruvate
The raw materials of the earth's primitive environment (the "primordial soup" did not include
A. Phosphorus
B. Salts
C. Methanol
D. Water
E. Ammonia - CORRECT ANSWERS A. Phosphorus
Explanation: Organic molecules such as sugars and amino acids were synthesize in a primordial
environment that contained simple inorganic and organic compounds including salts, methane,
ammonia, hydrogen, and water
Muscle movement on the cellular level is initiated by the release of Ca2+ from the terminal
cistern. Terminal cistern are associated with
A. Sarcoplasmic reticulum
