1. What is a characteristic of autotrophic organisms?
• A) They rely on other organisms for food
• B) They produce their own food using sunlight or chemicals
• C) They consume organic matter for energy
• D) They are incapable of producing energy
Answer: B) They produce their own food using sunlight or
chemicals
Rationale: Autotrophic organisms, like plants and certain bacteria,
produce their own food via photosynthesis or chemosynthesis.
2. Which of the following is an example of a producer in an
ecosystem?
• A) A rabbit
• B) A mushroom
• C) A flower
• D) A wolf
Answer: C) A flower
Rationale: Producers, such as flowers, are organisms that produce
their own food through photosynthesis, forming the base of the
food chain.
,3. What is the main purpose of meiosis?
o A) Growth and repair of tissues
o B) Asexual reproduction
o C) Production of gametes
o D) Protein synthesis
Answer: C) Production of gametes
Rationale: Meiosis is the process by which gametes (sperm and
egg cells) are produced, reducing the chromosome number by half
to ensure genetic diversity in sexual reproduction.
4. Which of the following macromolecules is the primary
component of the cell membrane?
o A) Proteins
o B) Nucleic acids
o C) Carbohydrates
o D) Lipids
Answer: D) Lipids
Rationale: The cell membrane is primarily composed of a
phospholipid bilayer, which forms a flexible barrier, with proteins
and carbohydrates embedded in it.
5. Which of the following is a characteristic of a carnivore?
• A) It eats primarily plants
, • B) It eats other animals
• C) It produces its own food through photosynthesis
• D) It feeds on decomposed organic matter
Answer: B) It eats other animals
Rationale: Carnivores are animals that primarily eat other animals,
as opposed to herbivores, which eat plants.
6. Which structure regulates the movement of materials into and
out of a cell?
• A) Nucleus
• B) Ribosome
• C) Mitochondrion
• D) Cell membrane
Answer: D) Cell membrane
Rationale: The cell membrane controls the entry and exit of
substances, maintaining homeostasis within the cell.
7. What is the role of enzymes in biological reactions?
o A) Provide energy for reactions
o B) Speed up chemical reactions
o C) Change the reaction products
o D) Decrease the reaction temperature
• A) They rely on other organisms for food
• B) They produce their own food using sunlight or chemicals
• C) They consume organic matter for energy
• D) They are incapable of producing energy
Answer: B) They produce their own food using sunlight or
chemicals
Rationale: Autotrophic organisms, like plants and certain bacteria,
produce their own food via photosynthesis or chemosynthesis.
2. Which of the following is an example of a producer in an
ecosystem?
• A) A rabbit
• B) A mushroom
• C) A flower
• D) A wolf
Answer: C) A flower
Rationale: Producers, such as flowers, are organisms that produce
their own food through photosynthesis, forming the base of the
food chain.
,3. What is the main purpose of meiosis?
o A) Growth and repair of tissues
o B) Asexual reproduction
o C) Production of gametes
o D) Protein synthesis
Answer: C) Production of gametes
Rationale: Meiosis is the process by which gametes (sperm and
egg cells) are produced, reducing the chromosome number by half
to ensure genetic diversity in sexual reproduction.
4. Which of the following macromolecules is the primary
component of the cell membrane?
o A) Proteins
o B) Nucleic acids
o C) Carbohydrates
o D) Lipids
Answer: D) Lipids
Rationale: The cell membrane is primarily composed of a
phospholipid bilayer, which forms a flexible barrier, with proteins
and carbohydrates embedded in it.
5. Which of the following is a characteristic of a carnivore?
• A) It eats primarily plants
, • B) It eats other animals
• C) It produces its own food through photosynthesis
• D) It feeds on decomposed organic matter
Answer: B) It eats other animals
Rationale: Carnivores are animals that primarily eat other animals,
as opposed to herbivores, which eat plants.
6. Which structure regulates the movement of materials into and
out of a cell?
• A) Nucleus
• B) Ribosome
• C) Mitochondrion
• D) Cell membrane
Answer: D) Cell membrane
Rationale: The cell membrane controls the entry and exit of
substances, maintaining homeostasis within the cell.
7. What is the role of enzymes in biological reactions?
o A) Provide energy for reactions
o B) Speed up chemical reactions
o C) Change the reaction products
o D) Decrease the reaction temperature
