Active transport is characterized by ( )
A: Transport by carrier, no energy is required
B: Through carrier transport, energy is required
C: No carrier transport, no energy consumption
D: Without carrier transport, energy is required
A: Transport by carrier, no energy is required
B: Through carrier transport, energy is required
C: No carrier transport, no energy consumption
D: Without carrier transport, energy is required
举一反三
- refers to carrier picking up merchandise from the shipper's warehouse and delivering it to the consignee's warehouse.（） A: Through transport B: Combined transport C: Container transport D: Door-to-door
- This transport carrier enables fat and cholesterol to travel through the blood</p></p>
- Multimodal transport refers to a transport system usually （ ） under the control or ownership of one operator。 A: operated by one carrier with more than two modes of transport B: operated by one carrier with more than one mode of transport C: operated by several carriers with more than two modes of transport D: operated by several carriers with more than one mode of transport
- () is the person who concludes the multimodal transport contract with the multimodal transport operator. A: Consignor B: Carrier C: Consignee D: Consolidator
- Solute movement by active transport can be distinguished from solute transport by equilibrating carrier mediated transport because active transport A: Is saturable at high solute concentration B: Is saturable at low solute concentration C: Is inhibited by other molecules with structures similar to that of the solute D: Moves the solute against its electrochemical gradient E: Allows movement of polar molecules