#Question id: 26902
#Unit 10. Ecological Principles
#Question id: 11520
#Unit 2. Cellular Organization
#Question id: 11800
#Unit 6. System Physiology – Plant
There are at least three different types of companion cells in the minor veins of mature, exporting leaves. Which of the following statements about these companion cells is CORRECT?
#Question id: 32426
#Unit 2. Cellular Organization
#Question id: 2183
#Unit 2. Cellular Organization
Transepithelial glucose transport uses a symporter to transport glucose up a concentration gradient by: