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Biology Keystone Exam Assessment Anchors:
Biology Keystone Exam Assessment Anchors:
BIO.A.4: Homeostasis and Transport
BIO.A.4.1: Identify and describe the cell structures involved in transport of materials into, out of, and throughout a cell.
BIO.A.4.1.1: Describe how the structure of the plasma membrane allows it to function as a regulatory structure and/or protective barrier for a cell.
BIO.A.4.1.2: Compare the mechanisms that transport materials across the plasma membrane (i.e., passive transport - diffusion, osmosis, facilitated diffusion; and active transport - pumps, endocytosis, exocytosis).
BIO.A.4.1.3: Describe how membrane-bound cellular organelles (e.g., endoplasmic reticulum, Golgi apparatus) facilitate the transport of materials within a cell.
BIO.A.4.2: Explain mechanisms that permit organisms to maintain biological balance between their internal and external environments.
BIO.A.4.2.1: Explain how organisms maintain homeostasis (e.g., thermoregulation, water regulation, oxygen regulation).
Review Resources:
Review Resources:
CRSD Videocast 3.aviCellular Transport
This podcast, created by Meghan Vierick and the Council Rock staff, reviews concepts of passive and active transport.
Inside the Cell Membrane with the Amoeba Sisters
In this video, the Amoeba Sisters explore the parts of the cell membrane. The Amoeba Sisters discuss the phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glycoproteins, and glycolipids - as well as why the surface area to volume ratio is so important in cells.
Diffusion
Explore how substances travel in diffusion with the Amoeba Sisters! This video uses a real life example and mentions concentration gradients, passive transport, facilitated diffusion, and explains why diffusion is critical for all organisms. In addition, this video discusses factors that can affect the rate of diffusion.
Osmosis and Water Potential with the Amoeba Sisters
In this video, the Amoeba Sisters explore the process of osmosis. This video features real life examples of osmosis, important vocab, and introduces concept of water potential and turgor pressure in plant cells.
Cell Transport with the Amoeba Sisters
In this video, the Amoeba Sisters discuss the importance of the cell membrane in maintaining homeostasis, review the structure of the cell membrane, and explore the different types of passive and active transport.
The Sodium-Potassium Pump
Explore the sodium potassium pump (Na+/K+ pump), with the Amoeba Sisters! This video talks about why this pump is needed and provides an overview of this type of active transport.
Homeostasis and Feedback with the Amoeba Sisters
In this video, the Amoeba Sisters explore homeostasis and learn how homeostasis relates to positive and negative feedback in the human body.
Hypertonic and Hypotonic
In this Amoeba Sisters short, the Amoeba Sisters go over what it means to have the words hypertonic and hypotonic in osmosis. Water has a net movement towards hypertonic areas!
Passive and Active Transport
In this Amoeba Sisters short, the Amoeba Sisters go over passive and active transport. The words osmosis, diffusion, facilitated diffusion, endocytosis, and exocytosis are briefly mentioned.
Test Your Knowledge:
Test Your Knowledge:
Vocabulary Review: Practice vocabulary terms from this unit in Quizlet.
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