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Welcome to our Biology Q&A page! Below are 10 homework problems along with their answers to help you test your knowledge in biology.
Problem 1:
What is the process by which plants make their own food?
Answer: Photosynthesis is the process by which plants make their own food using sunlight, water, and carbon dioxide.
Problem 2:
What is the powerhouse of the cell?
Answer: The mitochondria is known as the powerhouse of the cell, as it produces energy in the form of ATP.
Problem 3:
What is the function of DNA in living organisms?
Answer: DNA contains the genetic information that determines the traits and characteristics of living organisms.
Problem 4:
What is the difference between mitosis and meiosis?
Answer: Mitosis is a process of cell division that results in two identical daughter cells, while meiosis is a process that produces gametes with half the number of chromosomes.
Problem 5:
What is the role of enzymes in biological reactions?
Answer: Enzymes act as catalysts in biological reactions, speeding up the rate of chemical reactions without being consumed in the process.
Problem 6:
What is the function of the respiratory system?
Answer: The respiratory system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment.
Problem 7:
What is the role of the immune system in the body?
Answer: The immune system protects the body from pathogens and foreign substances by producing antibodies and activating immune responses.
Problem 8:
What is the difference between an autotroph and a heterotroph?
Answer: Autotrophs are organisms that can produce their own food through photosynthesis, while heterotrophs rely on other organisms for food.
Problem 9:
What is the structure and function of chloroplasts in plant cells?
Answer: Chloroplasts are organelles in plant cells that contain chlorophyll and are responsible for photosynthesis, the process of converting sunlight into energy.
Problem 10:
What is the role of nitrogen-fixing bacteria in the nitrogen cycle?
Answer: Nitrogen-fixing bacteria convert atmospheric nitrogen into a form that can be used by plants, playing a crucial role in the nitrogen cycle.
Conclusion:
In conclusion, biology is a fascinating field that explores the diversity and complexity of living organisms. By understanding key concepts such as photosynthesis, cellular respiration, genetics, and immune responses, we can appreciate the intricate mechanisms that sustain life on Earth.
FAQs:
Q: What is the difference between prokaryotic and eukaryotic cells?
A: Prokaryotic cells lack a nucleus and organelles, while eukaryotic cells have a nucleus and membrane-bound organelles.
Q: How does natural selection contribute to evolution?
A: Natural selection favors traits that increase an organism’s fitness, leading to the adaptation and evolution of species over time.
Q: What is the role of DNA replication in cell division?
A: DNA replication ensures that each daughter cell receives an exact copy of the genetic material during cell division.
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