Here are free 50 biology objectives questions for you.
1. What is the study of living organisms?
a) Astronomy
b) Biology
c) Geology
d) Chemistry
2. Which branch of biology deals with the classification and naming of living things?
a) Anatomy
b) Histology
c) Taxonomy
d) Ecology
3. What organelle is responsible for cellular respiration?
a) Nucleus
b) Mitochondria
c) Endoplasmic reticulum
d) Chloroplasts
4. What is the primary function of the ribosome?
a) Protein synthesis
b) Carbohydrate synthesis
c) Lipid synthesis
d) Nucleic acid synthesis
5. What is the main function of the circulatory system in animals?
a) Transport of nutrients and oxygen
b) Elimination of waste products
c) Protection from pathogens
d) All of the above
6. What is a gene?
a) A unit of heredity
b) A type of protein
c) A type of cell organelle
d) A type of cell membrane
7. What is the process by which plants convert light energy into chemical energy?
a) Respiration
b) Photosynthesis
c) Fermentation
d) Transpiration
8. What is the function of the vacuole in plant cells?
a) Storage of water and nutrients
b) Cellular respiration
c) Protein synthesis
d) Digestion of waste products
9. What is a virus?
a) A living organism
b) A non-living organism
c) A type of bacteria
d) A type of fungus
10. What is the difference between an autotroph and a heterotroph?
a) Autotrophs can make their own food, while heterotrophs cannot
b) Heterotrophs can make their own food, while autotrophs cannot
c) Both can make their own food
d) Both cannot make their own food
11. What is an ecosystem?
a) A community of organisms and their environment
b) An individual organism
c) A group of cells
d) A type of cell organelle
12. What is the role of the golgi apparatus in cells?
a) Protein synthesis
b) Carbohydrate synthesis
c) Lipid synthesis
d) Packaging and transport of cellular materials
13. What is the central dogma of molecular biology?
a) DNA is transcribed into RNA, which is translated into protein
b) RNA is transcribed into DNA, which is translated into protein
c) Protein is transcribed into RNA, which is translated into DNA
d) DNA is translated into RNA, which is transcribed into protein
14. What are stem cells?
a) Undifferentiated cells that can differentiate into many different types of cells
b) Highly specialized cells that cannot differentiate into other cell types
c) Cells that are not capable of cell division
d) Cells that are only found in plant tissue
15. What is an enzyme?
a) A type of hormone
b) A type of cell organelle
c) A type of protein that catalyzes chemical reactions
d) A type of cell membrane
16. What is the role of the pancreas in digestion?
a) Production of bile
b) Production of enzymes that break down carbohydrates, proteins, and lipids
c) Absorption of nutrients from food
d) Storage of waste products before elimination from the body
17. What is the function of the nervous system?
a) Control and coordination of body functions
b) Protection from pathogens
c) Transport of nutrients and oxygen
d) All of the above
18. What is mitosis?
a) Cell division resulting in the formation of gametes
b) Cell division resulting in the formation of somatic cells
c) The process by which cells become specialized
d) None of the above
19. What is the function of the lysosome in cells?
a) Regulation of cellular metabolism
b) Protection of the cell from pathogens
c) Breakdown of cellular waste products
d) Production of energy
20. What is a food chain?
a) A linear sequence of organisms in which each serves as a food source for the next
b) A graph showing the relationships between species in an ecosystem
c) An animal that eats only plants
d) A plant that can make its own food
21. What is a cladogram?
a) A graphical representation of evolutionary relationships between groups of organisms
b) A type of food chain
c) A type of organism that only eats meat
d) A type of plant that can make its own food
22. What is the function of the adrenal gland?
a) Production of insulin
b) Regulation of blood sugar levels
c) Production of adrenaline and other hormones
d) Protection from pathogens
23. What is a chimera?
a) A type of cell organelle
b) An organism composed of two or more genetically distinct cells
c) A type of bacteria
d) A type of virus
24. What is the function of the thyroid gland?
a) Production of insulin
b) Regulation of blood sugar levels
c) Production of adrenaline and other hormones
d) Regulation of metabolism
25. What is the process by which DNA is copied?
a) Translation
b) Transcription
c) Replication
d) Mutation
26. What is the function of the hypothalamus in the brain?
a) Regulation of body temperature, hunger, and thirst
b) Regulation of blood sugar levels
c) Production of adrenaline and other hormones
d) Protection from pathogens
27. What is the role of the myelin sheath in nerves?
a) Insulation and protection of the nerve cell and its axon
b) Production of neurotransmitters
c) Regulation of blood sugar levels
d) None of the above
28. What is the function of the cilia in cells?
a) Regulation of cellular metabolism
b) Protection of the cell from pathogens
c) Movement of materials across cell surfaces
d) Production of energy
29. What is the process of natural selection?
a) The gradual change in inherited traits within a population over time
b) The random shuffling of genes during meiosis
c) The process by which cells become specialized
d) None of the above
30. What is the difference between aerobic and anaerobic respiration?
a) Aerobic respiration requires oxygen, while anaerobic respiration does not
b) Anaerobic respiration requires oxygen, while aerobic respiration does not
c) Both require oxygen
d) Neither require oxygen
31. What is the function of the ovary in female animals?
a) Production of eggs
b) Production of testosterone
c) Production of estrogen
d) Production of insulin
32. What is the function of the prostate gland in male animals?
a) Production of eggs
b) Production of testosterone
c) Production of estrogen
d) Production of semen
33. What is the function of the placenta in pregnant animals?
a) Production of hormones that regulate pregnancy
b) Protection of the developing embryo
c) Exchange of nutrients and waste products between mother and fetus
d) All of the above
34. What is a mutation?
a) A change in the DNA sequence of an organism
b) A type of hormone
c) A type of cell organelle
d) A type of cell membrane
35. What is the function of the ribosomal RNA?
a) Regulation of cellular metabolism
b) Production of insulin
c) Production of energy
d) Formation of the ribosome and protein synthesis
36. What is the function of the spleen in animals?
a) Production of bile
b) Production of enzymes that break down carbohydrates, proteins, and lipids
c) Regulation of blood sugar levels
d) Removal of old red blood cells from circulation
37. What is the function of the kidney in animals?
a) Regulation of blood sugar levels
b) Production of hormones that regulate childbirth
c) Production of adrenaline and other hormones
d) Removal of waste products from the blood
38. What is the role of the sarcomere in muscle cells?
a) Storage of energy
b) Protection of the cell from pathogens
c) Production of neurotransmitters
d) Muscle contraction
39. What is the function of the alveoli in the respiratory system?
a) Exchange of oxygen and carbon dioxide between the lungs and the blood
b) Production of insulin
c) Production of adrenaline and other hormones
d) None of the above
40. What is the function of the seminiferous tubules in the male testes?
a) Production of testosterone
b) Production of sperm
c) Production of estrogen
d) None of the above
41. What is the function of the tRNA in protein synthesis?
a) Production of insulin
b) Delivery of amino acids to the ribosome during protein synthesis
c) Production of hormones that regulate childbirth
d) None of the above
42. What is the function of the atria in the heart?
a) Pumping blood to the lungs
b) Pumping blood to the rest of the body
c) Regulation of blood sugar levels
d) None of the above
43. What is the function of the ventricles in the heart?
a) Pumping blood to the lungs
b) Pumping blood to the rest of the body
c) Production of adrenaline and other hormones
d) None of the above
44. What is the function of the corpus luteum in female animals?
a) Production of testosterone
b) Production of estrogen
c) Production of progesterone
d) None of the above
45. What is the function of the epididymis in male animals?
a) Production of testosterone
b) Production of sperm
c) Production of estrogen
d) None of the above
46. What is the function of the vas deferens in male animals?
a) Delivery of sperm to the urethra for ejaculation
b) Production of testosterone
c) Production of estrogen
d) None of the above
47. What is the function of the peristalsis in the digestive system?
a) Production of hormones that regulate digestion
b) Absorption of nutrients from food
c) Movement of food through the digestive tract
d) None of the above
48. What is the function of the colon in the digestive system?
a) Production of hormones that regulate digestion
b) Absorption of nutrients from food
c) Storage and elimination of waste products
d) None of the above
49. What is the function of the urea in the urinary system?
a) Absorption of nutrients from the blood
b) Regulation of blood sugar levels
c) Removal of waste products from the blood
d) None of the above
50. What is the function of the bladder in the urinary system?
a) Regulation of blood sugar levels
b) Storage and elimination of urine
c) Production of hormones that regulate urinary function
d) None of the above
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