DAT Mock Exam 100 QUESTIONS AND CORRECT
DETAILED ANSWERS FOR GUARANTEED SUCCESS /
NEWEST 2025/2026 GRADED A+||BRAND NEW
VERSION!!
Biology & Natural Sciences (1–15)
1. Which of the following organelles is the site of ATP production in eukaryotic
cells?
A. Ribosome
B. Mitochondrion
C. Lysosome
D. Golgi apparatus
– Mitochondria generate most of a cell’s ATP via oxidative phosphorylation.
2. DNA replication occurs during which phase of the cell cycle?
A. G1
B. S
C. G2
D. M
– The S phase is when DNA is synthesized.
3. In Hardy–Weinberg equilibrium, if p = frequency of dominant allele and q =
frequency of recessive allele, then p + q equals:
A. p² + q²
B. 1
C. p² + 2pq
D. q²
– Allele frequencies sum to 1.
4. Which macromolecule class includes enzymes?
A. Carbohydrates
B. Lipids
, C. Proteins
D. Nucleic acids
– Enzymes are proteins that catalyze biochemical reactions.
5. The primary structure of a protein is determined by:
A. Hydrogen bonding
B. Amino acid sequence
C. Ionic interactions
D. Tertiary folding
– The linear sequence of amino acids defines primary structure.
6. Photosynthesis takes place in which plant cell organelle?
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Endoplasmic reticulum
– Chloroplasts carry out photosynthesis in plants.
7. The process that produces gametes with half the chromosome number is:
A. Mitosis
B. Binary fission
C. Meiosis
D. Cytokinesis
– Meiosis halves the chromosome number.
8. Which blood vessel carries oxygenated blood from the lungs to the heart?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Vena cava
– Pulmonary veins return oxygenated blood to the heart.
9. Which hormone regulates blood glucose levels?
A. Thyroxine
B. Insulin
, C. Adrenaline
D. Cortisol
– Insulin lowers blood glucose by facilitating uptake.
10.Enzyme activity can be decreased by:
A. Increasing substrate
B. Competitive inhibitors
C. Coenzymes
D. Optimal pH
– Competitive inhibitors reduce enzyme function.
11.The basic unit of life is the:
A. Molecule
B. Cell
C. Organ
D. Tissue
– Cells are the smallest unit capable of life.
12.Peptide bonds link which parts of amino acids?
A. R group to R group
B. Amino group to carboxyl group
C. Carboxyl to R group
D. Side chain to side chain
– Peptide bonds form between amino and carboxyl groups.
13.Which part of the neuron receives signals?
A. Axon
B. Dendrite
C. Synaptic terminal
D. Myelin sheath
– Dendrites receive incoming information.
14.In ecology, the term carrying capacity refers to:
A. Species richness
B. Maximum sustainable population
DETAILED ANSWERS FOR GUARANTEED SUCCESS /
NEWEST 2025/2026 GRADED A+||BRAND NEW
VERSION!!
Biology & Natural Sciences (1–15)
1. Which of the following organelles is the site of ATP production in eukaryotic
cells?
A. Ribosome
B. Mitochondrion
C. Lysosome
D. Golgi apparatus
– Mitochondria generate most of a cell’s ATP via oxidative phosphorylation.
2. DNA replication occurs during which phase of the cell cycle?
A. G1
B. S
C. G2
D. M
– The S phase is when DNA is synthesized.
3. In Hardy–Weinberg equilibrium, if p = frequency of dominant allele and q =
frequency of recessive allele, then p + q equals:
A. p² + q²
B. 1
C. p² + 2pq
D. q²
– Allele frequencies sum to 1.
4. Which macromolecule class includes enzymes?
A. Carbohydrates
B. Lipids
, C. Proteins
D. Nucleic acids
– Enzymes are proteins that catalyze biochemical reactions.
5. The primary structure of a protein is determined by:
A. Hydrogen bonding
B. Amino acid sequence
C. Ionic interactions
D. Tertiary folding
– The linear sequence of amino acids defines primary structure.
6. Photosynthesis takes place in which plant cell organelle?
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Endoplasmic reticulum
– Chloroplasts carry out photosynthesis in plants.
7. The process that produces gametes with half the chromosome number is:
A. Mitosis
B. Binary fission
C. Meiosis
D. Cytokinesis
– Meiosis halves the chromosome number.
8. Which blood vessel carries oxygenated blood from the lungs to the heart?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Vena cava
– Pulmonary veins return oxygenated blood to the heart.
9. Which hormone regulates blood glucose levels?
A. Thyroxine
B. Insulin
, C. Adrenaline
D. Cortisol
– Insulin lowers blood glucose by facilitating uptake.
10.Enzyme activity can be decreased by:
A. Increasing substrate
B. Competitive inhibitors
C. Coenzymes
D. Optimal pH
– Competitive inhibitors reduce enzyme function.
11.The basic unit of life is the:
A. Molecule
B. Cell
C. Organ
D. Tissue
– Cells are the smallest unit capable of life.
12.Peptide bonds link which parts of amino acids?
A. R group to R group
B. Amino group to carboxyl group
C. Carboxyl to R group
D. Side chain to side chain
– Peptide bonds form between amino and carboxyl groups.
13.Which part of the neuron receives signals?
A. Axon
B. Dendrite
C. Synaptic terminal
D. Myelin sheath
– Dendrites receive incoming information.
14.In ecology, the term carrying capacity refers to:
A. Species richness
B. Maximum sustainable population
