Biology A Introduction

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Across
  1. 3. Non-living components of an ecosystem, including physical and chemical factors like temperature, water, and soil.
  2. 6. The process by which a cell expels large molecules, waste products, or other substances by merging vesicles with the cell membrane, releasing their contents outside the cell.
  3. 9. A passive transport process where specific transport proteins help move molecules, such as glucose or ions, across the cell membrane.
  4. 12. The ability of an organism to maintain a stable internal environment, regulating factors like temperature, pH, and nutrient levels to support proper function.
  5. 14. A large geographical region with distinct climate, plant, and animal communities.
  6. 15. A type of population growth where a population multiplies rapidly, resulting in a J-shaped curve on a graph.
  7. 16. A specialized structure within a eukaryotic cell that performs specific functions, such as the mitochondria for energy production and the nucleus for genetic control.
  8. 17. An ecosystem in which the population sizes and environmental conditions remain relatively consistent over time.
  9. 19. The diffusion of water molecules across a selectively permeable membrane, typically from an area of lower solute concentration to an area of higher solute concentration.
  10. 22. The number of individuals of a population per unit area or volume.
  11. 25. The movement of individuals into a population or area.
  12. 28. Two solutions with the same solute concentration, resulting in no net movement of water into or out of the cells placed in these solutions.
  13. 29. The process by which a cell engulfs large particles, fluids, or other cells by wrapping its cell membrane around them and forming a vesicle.
  14. 30. A group of individuals of the same species living in the same area and capable of interbreeding.
  15. 32. The circulation of elements and compounds like carbon, nitrogen, and water through Earth's various systems and processes.
  16. 33. The maximum number of individuals of a species that an environment can sustainably support.
  17. 34. A type of population growth where a population grows gradually, stabilizes near the carrying capacity of the environment, and results in an S-shaped curve on a graph.
Down
  1. 1. A solution with a lower solute concentration compared to another solution, which can cause cells placed in it to gain water and swell.
  2. 2. A group of different populations of organisms living and interacting in the same area.
  3. 4. Limiting factors that become more significant as a population's density increases, like competition for resources.
  4. 5. A single, individual living being that can carry out all basic life processes.
  5. 6. A type of cell or organism that possesses a true nucleus and membrane-bound organelles. Eukaryotic cells are typically more complex than prokaryotic cells.
  6. 7. The movement of molecules across a cell membrane without the expenditure of energy. This includes processes like diffusion and osmosis.
  7. 8. The passive movement of molecules from an area of higher concentration to an area of lower concentration, which tends to equalize the concentration.
  8. 10. Factors, such as food availability, predation, or disease, that limit the growth of a population.
  9. 11. A community of living organisms (biotic) and their non-living (abiotic) environment, interacting as a system.
  10. 13. The movement of molecules across a cell membrane against their concentration gradient, requiring energy, often facilitated by specialized transport proteins.
  11. 18. A type of cell or organism that lacks a true nucleus and membrane-bound organelles. Prokaryotic cells are simpler in structure and include bacteria.
  12. 20. Transport proteins that use energy (usually ATP) to actively move molecules across the cell membrane.
  13. 21. Limiting factors that affect a population regardless of its density, such as natural disasters.
  14. 23. The movement of individuals out of a population or area.
  15. 24. The global sum of all ecosystems, including all living organisms and their interactions on Earth.
  16. 26. A solution with a higher solute concentration compared to another solution, which can cause cells placed in it to lose water and shrink.
  17. 27. The scientific study of the interactions between organisms and their environment, including the study of populations, communities, ecosystems, and their relationships.
  18. 31. Living components of an ecosystem, including all organisms such as plants, animals, and microorganisms.