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What is the purpose of cellular respiration?
- A. Produce enzymes.
- B. Produce oxygen molecules.
- C. Enable fermentation.
- D. Obtain energy in the form of ATP.
Correct Answer: D
Rationale:
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Which organelle is responsible for organizing protein synthesis?
- A. mitochondria
- B. nucleus
- C. ribosome
- D. vacuole
Correct Answer: C
Rationale: The organelle responsible for organizing protein synthesis is the ribosome. Ribosomes are the cellular structures where proteins are synthesized or produced. They can be found free-floating in the cytoplasm or attached to the endoplasmic reticulum. Mitochondria are known as the powerhouse of the cell, responsible for generating energy through cellular respiration. The nucleus is the control center of the cell, housing the genetic material and controlling cell activities. Vacuoles are responsible for storing various substances within the cell and maintaining turgor pressure.
What part of a plant cell acts as a barrier and provides support to the cell?
- A. cell membrane.
- B. Xylem.
- C. chloroplast
- D. Cell wall.
Correct Answer: D
Rationale:
Are all bacteria bad, and do they always cause infections?
- A. TRUE
- B. FALSE
- C. Sometimes
- D. Not sure
Correct Answer: B
Rationale: The misconception that all bacteria are harmful and always cause infections is incorrect. Although some bacteria can lead to diseases, it is essential to note that not all bacteria are harmful. In reality, certain bacteria are beneficial and serve important functions in the body, such as aiding in digestion. Therefore, the correct answer is FALSE.
How is the aerodynamic nature of a bird's wing best categorized in biology?
- A. Organisms and their environment
- B. Ontogeny
- C. Structure and function
- D. Heredity
Correct Answer: C
Rationale: The aerodynamic nature of a bird's wing exemplifies the relationship between its structure and its function, showcasing how its form is intricately adapted for its function of flight. This concept of the interdependence of structure and function is a fundamental theme in biology. It emphasizes how the structures of living organisms are precisely designed to carry out specific functions, thereby influencing their survival and success in their respective environments.
On what part of a light microscope is the slide placed?
- A. Base.
- B. Arm.
- C. stage
- D. Lens.
Correct Answer: C
Rationale: