In science, the term "transport" refers to the movement of substances (such as water, nutrients, gases, and waste products) within living organisms and between different parts of an organism. This movement is essential for the survival and proper functioning of cells, tissues, and organs.
Active Transport: This is the movement of molecules across a cell membrane against the concentration gradient, requiring the expenditure of energy (usually in the form of ATP).
Facilitated Diffusion: This is a type of passive transport that involves the use of transport proteins to allow specific molecules to cross the cell membrane.
Osmosis: This is the diffusion of water across a selectively permeable membrane, from an area of lower solute concentration to an area of higher solute concentration.
Here are some key concepts to focus on when studying the topic of transport:
Understand the different types of transport mechanisms in living organisms, including diffusion, active transport, facilitated diffusion, osmosis, and bulk transport.
Be able to explain the role of transport systems in plants, including the functions of xylem and phloem.
Describe the structures and functions of the circulatory and respiratory systems in animals, and how they facilitate the transport of substances throughout the body.
Explore the importance of transport in maintaining homeostasis and supporting the overall health and function of living organisms.
Remember to review diagrams and illustrations that depict the processes of transport, as visual aids can help in understanding the complex mechanisms involved.
Earth/Space Science: Students will use scientific skills and processes to explain the chemical and physical interactions (i.e., natural forces and cycles, transfer of energy) of the environment, Earth, and the universe that occur over time.
Interactions of Hydrosphere and Atmosphere: Cite evidence to explain the relationship between the hydrosphere and atmosphere.
Identify and describe how the temperature and precipitation in a geographic area are affected by surface features and changes in atmospheric and ocean content: Relative location of mountains; Volcanic eruptions; Proximity to large bodies of water; Heat energy of ocean currents.
Interactions of Hydrosphere and Atmosphere: Recognize and describe the various factors that affect climate.
Identify and describe how the temperature and precipitation of an area are affected by surface and ocean features: Relative location of mountains; Proximity to large bodies of water; Warm and cold ocean currents.
Recognize and describe the global effects of volcanic eruptions, greenhouse gases, and El Nino.