12 Questions
What is the main purpose of homeostasis?
To adjust to changing external conditions while maintaining internal stability
Which type of cells lack a nucleus and are simpler in structure?
Prokaryotic cells
What is the role of cholesterol in biological membranes?
Acts as a structural component in all types of cells
Which cellular component is responsible for functional separation within the cell?
Nuclear membrane
What do eukaryotic cells have that prokaryotic cells lack?
Membrane-bound organelles
What is the key characteristic of plasma membranes in cells?
Consist of integral and peripheral proteins
What is the primary function of the Golgi apparatus in a cell?
Protein processing, posttranslational modifications, and packaging of proteins for transport
What is the primary role of mitochondria in a cell?
Oxidation of carbohydrates and lipids to produce energy
Which of the following is not a key player in cellular energy metabolism?
Photosynthesis
What is the primary function of lysosomes in a cell?
Digestion of macromolecules
What is the energy currency molecule used in cells?
Adenosine Triphosphate (ATP)
Which of the following energy sources can be metabolized through the process of beta-oxidation?
Ketone bodies
Explore the meaning of homeostasis and how biological systems maintain internal stability while adapting to external changes. Learn about the role of physiological reflexes in achieving a relatively stable internal environment through feedback loops and cell-cell communication. Discover how units function as open systems to exchange heat, gases, nutrients, waste, and information.
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