Free Online Tests of Biology Practice Tests
If you want to join Pak Defence Forces like Army, Navy or Air Force specially in AFNS, Nursing, Medical Branch, FMA, FMT or Female Nursing in Pak Army then you must learn all the given questions below. All questions help to get right direction of biology tests and its pattern.
Free Practice of Online Tests of Biology Intermediate Level
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1. Which of the following is the powerhouse of the cell?
A) Ribosome
B) Nucleus
C) Mitochondria
D) Golgi apparatus
Answer: C) Mitochondria
2. Which macromolecule is primarily responsible for storing genetic information?
A) Proteins
B) Lipids
C) Carbohydrates
D) Nucleic acids
Answer: D) Nucleic acids
3. In the nitrogen cycle, nitrogen-fixing bacteria convert atmospheric nitrogen (Nโ) into:
A) Ammonia
B) Nitrates
C) Nitrites
D) Proteins
Answer: A) Ammonia
4. Which organelle is involved in protein synthesis?
A) Endoplasmic reticulum
B) Ribosome
C) Lysosome
D) Vacuole
Answer: B) Ribosome
5. What is the basic unit of the nervous system?
A) Neuron
B) Axon
C) Dendrite
D) Synapse
Answer: A) Neuron
6. Which process occurs during meiosis but not mitosis?
A) Cytokinesis
B) DNA replication
C) Crossing over
D) Chromosome condensation
Answer: C) Crossing over
7. Which of the following is a function of the stomata in plants?
A) Absorbing water
B) Transporting nutrients
C) Gas exchange
D) Photosynthesis
Answer: C) Gas exchange
8. What is the main function of xylem in vascular plants?
A) Transporting sugars
B) Transporting water and minerals
C) Photosynthesis
D) Gas exchange
Answer: B) Transporting water and minerals
9. Which of the following hormones regulates blood sugar levels by lowering them?
A) Glucagon
B) Insulin
C) Adrenaline
D) Thyroxine
Answer: B) Insulin
10. In an ecosystem, which trophic level do primary consumers belong to?
A) First
B) Second
C) Third
D) Fourth
Answer: B) Second
11. Which type of RNA carries amino acids to the ribosome during translation?
A) mRNA
B) tRNA
C) rRNA
D) snRNA
Answer: B) tRNA
12. Which of the following structures in the human body is responsible for filtering blood and forming urine?
A) Liver
B) Kidney
C) Pancreas
D) Heart
Answer: B) Kidney
13. What is the primary function of hemoglobin in the blood?
A) Digesting proteins
B) Transporting oxygen
C) Fighting infections
D) Clotting blood
Answer: B) Transporting oxygen
14. Which process is responsible for the conversion of glucose into pyruvate?
A) Glycolysis
B) Krebs cycle
C) Oxidative phosphorylation
D) Fermentation
Answer: A) Glycolysis
15. What term describes the movement of water across a semipermeable membrane?
A) Diffusion
B) Osmosis
C) Active transport
D) Endocytosis
Answer: B) Osmosis
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