You may exit out of this review and return later without penalty.
Close
Sharing assignments in OpenClass
OpenClass is on a mission to improve & democratize education. Through our platform, educators can share assignments privately or with our entire community to improve accessibility of the best learning resources around the world.
Our assignments guide students through research-backed study sessions to reinforce learning. If this review is relevant to your teachings, feel free to add it to one of your classes!
Our format is simple and engaging: students are asked a retrieval question, then shown corrective feedback and a multiple-choice mastery question to assess their understanding of the material. Assignments adapt to unique student needs and continue to draw questions until a student has demonstrated mastery.
Explain how the structure of glycogen makes it an efficient molecule for energy storage in animals.
Describe how the structure of cellulose contributes to its role in providing structural support in plants.
Compare and contrast the structures of amylose and amylopectin and explain how these differences affect their roles in plants.
How does the branching in polysaccharides like glycogen and amylopectin affect their solubility and accessibility for enzymatic action?
Discuss the role of chitin in arthropods and how its structure contributes to its function.
Describe the structure of a phospholipid and explain how this structure enables phospholipids to form the bilayer of cell membranes.
Explain how lipid-soluble molecules, such as steroid hormones, function in cell signaling.
Discuss the role of cholesterol in the cell membrane and how it affects membrane fluidity.
How do phospholipids contribute to the selective permeability of the cell membrane?
Explain the role of phospholipids in cell signaling, particularly in the context of lipid rafts.
Explain how the three-dimensional shape of an enzyme influences its catalytic activity.
Describe how the three-dimensional structure of hemoglobin enables it to transport oxygen in the blood.
How does the three-dimensional shape of a receptor protein influence cell signaling?
Explain how the three-dimensional shape of an antibody allows it to perform its role in the immune response.
Discuss how the three-dimensional shape of a membrane transport protein facilitates its function in moving substances across the cell membrane.
Explain how lipid-soluble molecules, such as steroid hormones, function in cell signaling.
(Student response here)
Lipid-soluble molecules like steroid hormones can easily pass through the phospholipid bilayer of cell membranes due to their hydrophobic nature. Once inside the cell, they bind to specific intracellular receptors, forming a hormone-receptor complex. This complex then enters the nucleus and binds to specific DNA sequences, regulating the transcription of certain genes. This process alters the production of proteins, thereby influencing cell function and activity.
What allows lipid-soluble molecules to pass through the cell membrane?