General science GK question answer || 300+MCQ || free PDF
Biology General Knowledge
1. What is the role of mitochondria in cells?
a) Photosynthesis
b) Protein synthesis
c) Energy production
d) Cell division
Answer: c) Energy production
2. Which of the following is not a component of the cell membrane?
a) Phospholipids
b) Carbohydrates
c) Nucleic acids
d) Proteins
Answer: c) Nucleic acids
3. What is the primary function of the chloroplast in plant cells?
a) Respiration
b) Photosynthesis
c) Protein synthesis
d) Digestion
Answer: b) Photosynthesis
4. What type of bond holds the two strands of a DNA molecule together?
a) Ionic bond
b) Hydrogen bond
c) Covalent bond
d) Metallic bond
Answer: b) Hydrogen bond
5. Which organelle is known as the “control center” of the cell?
a) Ribosome
b) Endoplasmic reticulum
c) Nucleus
d) Golgi apparatus
Answer: c) Nucleus
6. What is the term for the process by which plants lose water vapor through their leaves?
a) Respiration
b) Transpiration
c) Photosynthesis
d) Digestion
Answer: b) Transpiration
7. Which of the following is a type of asexual reproduction?
a) Binary fission
b) Pollination
c) Fertilization
d) Genetic recombination
Answer: a) Binary fission
8. What is the primary function of the ribosome in a cell?
a) Energy production
b) DNA replication
c) Protein synthesis
d) Lipid synthesis
Answer: c) Protein synthesis
9. What is the term for the process of cell division that results in two identical daughter cells?
a) Meiosis
b) Mitosis
c) Binary fission
d) Budding
Answer: b) Mitosis
10. Which molecule carries genetic information from the nucleus to the ribosome?
a) tRNA
b) mRNA
c) rRNA
d) DNA
Answer: b) mRNA
General science GK
11. What is the name of the process by which cells convert glucose into energy in the presence of oxygen?
a) Photosynthesis
b) Fermentation
c) Cellular respiration
d) Glycolysis
Answer: c) Cellular respiration
12. Which part of the cell is responsible for modifying and packaging proteins?
a) Mitochondria
b) Golgi apparatus
c) Endoplasmic reticulum
d) Lysosome
Answer: b) Golgi apparatus
13. What is the term for the genetic makeup of an organism?
a) Phenotype
b) Genotype
c) Allele
d) Chromosome
Answer: b) Genotype
14. What is the primary function of the endoplasmic reticulum?
a) Energy production
b) Protein and lipid synthesis
c) Cell division
d) Digestion
Answer: b) Protein and lipid synthesis
15. Which type of cell lacks a nucleus?
a) Eukaryotic cell
b) Prokaryotic cell
c) Animal cell
d) Plant cell
Answer: b) Prokaryotic cell
16. What is the term for a group of cells that perform a specific function?
a) Tissue
b) Organ
c) System
d) Organism
Answer: a) Tissue
17. Which process involves the replication of DNA?
a) Transcription
b) Translation
c) Replication
d) Mutation
Answer: c) Replication
18. What is the primary role of the cell membrane?
a) Energy production
b) Protein synthesis
c) Regulating what enters and exits the cell
d) DNA replication
Answer: c) Regulating what enters and exits the cell
19. What is the name of the pigment responsible for the color of plants?
a) Hemoglobin
b) Melanin
c) Chlorophyll
d) Carotene
Answer: c) Chlorophyll
20. Which organ is responsible for filtering blood in the human body?
a) Liver
b) Kidney
c) Pancreas
d) Spleen
Answer: b) Kidney
General science GK
21. What is the primary function of the phloem in plants?
a) Transporting water
b) Transporting nutrients
c) Transporting sugars
d) Photosynthesis
Answer: c) Transporting sugars
22. Which of the following is a type of connective tissue?
a) Muscle
b) Nervous
c) Epithelial
d) Cartilage
Answer: d) Cartilage
23. What is the term for the process by which organisms convert sunlight into chemical energy?
a) Cellular respiration
b) Photosynthesis
c) Fermentation
d) Glycolysis
Answer: b) Photosynthesis
24. Which of the following structures is found in plant cells but not in animal cells?
a) Mitochondria
b) Ribosome
c) Cell wall
d) Nucleus
Answer: c) Cell wall
25. What is the term for the study of heredity and the variation of inherited characteristics?
a) Genetics
b) Ecology
c) Physiology
d) Anatomy
Answer: a) Genetics
General science GK
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