explain how companion cells transfer assimilates to phloem sieve tubes, with reference to proton pumps and cotransporter proteins
Standard detail
7.2.7
Depth 2Parent ID: E9A3417D79674AEFB71EE95042186028Standard set: Biology 9700: A Level (2025, 2026 and 2027)
Original statement
Quick facts
- Statement code
- 7.2.7
- List ID
- 7
- Standard ID
- 5F75D5F4E5B04B46A6592E890C500943
- Subject
- Science
- Grades
- ProfessionalEducation-Development
- Ancestor IDs
- E9A3417D79674AEFB71EE95042186028AE7A4C87674F4680A18E72B07C52C199
- Source document
- Syllabus Cambridge International AS & A Level Biology 9700
- License
- CC BY 4.0 US