Phospholipids have both hydrophilic and hydrophobic regions. The polar hydrophilic phosphate regions of the phospholipids are oriented toward the aqueous external or internal environment, while the nonpolar hydrophobic fatty acid regions face each other within the interior of the membrane.
Standard detail
2.3.A.1
Depth 3Parent ID: F9CE9BAB39FA463395EAF36CF1BCF3BDStandard set: AP Biology (2025)
Original statement
Quick facts
- Statement code
- 2.3.A.1
- List ID
- 1
- Standard ID
- 305DFC072621498686623F914717A56B
- Subject
- AP Biology
- Grades
- 09, 10, 11, 12
- Ancestor IDs
- F9CE9BAB39FA463395EAF36CF1BCF3BDC2AF3D0C7D0842099AAEFFE8DFB3AA1DE36AEE76A60A48BBB2281778B8E61081
- Source document
- AP® Biology COURSE AND EXAM DESCRIPTION Effective Fall 2025
- License
- CC BY 4.0 US