Phospholipids
Phospholipids are a class of lipids that are a major component of all cell membranes. They are made up of a glycerol molecule, two fatty acid chains, a phosphate group, and a polar head group.
Structure
The structure of a phospholipid consists of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails. The head is made up of a phosphate group and a polar molecule, while the tails are made up of fatty acid chains.
Function
Phospholipids play a crucial role in the structure and function of cell membranes. The arrangement of phospholipids forms a lipid bilayer, with the hydrophilic heads facing outward towards the water-based environment, and the hydrophobic tails facing inward, away from the water.
Study Guide
- What is the basic structure of a phospholipid?
- How do phospholipids arrange themselves in a cell membrane?
- What is the function of phospholipids in the cell membrane?
- What are the head and tail components of a phospholipid?
- How do phospholipids interact with water molecules?
◂Science Worksheets and Study Guides Second Grade. Fossils and dinosaurs
Study Guide
Fossils and dinosaurs 
Activity Lesson
Fossils & Dinosaurs Worksheet/Answer key
Fossils and dinosaurs Worksheet/Answer key
Fossils and dinosaurs Worksheet/Answer key
Fossils and dinosaurs Worksheet/Answer key
Fossils and Dinosaurs Vocabulary/Answer key
Fossils and dinosaurs
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
Nature of Science
Earth Structures - Humans continue to explore the composition and structure of the surface of Earth. External sources of energy have continuously altered the features of Earth by means of both constructive and destructive forces. All life, including human civilization, is dependent on Earth's water and natural resources.
Describe how small pieces of rock and dead plant and animal parts can be the basis of soil and explain the process by which soil is formed.
Classify soil types based on color, texture (size of particles), the ability to retain water, and the ability to support the growth of plants.
Earth and Space Science
Earth Structures - Humans continue to explore the composition and structure of the surface of Earth. External sources of energy have continuously altered the features of Earth by means of both constructive and destructive forces. All life, including human civilization, is dependent on Earth's water and natural resources.
Recognize that Earth is made up of rocks. Rocks come in many sizes and shapes.