Transport by transporters can be either active or passive, whereas transport by channels is always passive.
A: 正确
B: 错误
A: 正确
B: 错误
A
举一反三
- Objective tests can test _____. A: active knowledge B: passive knowledge C: both active and passive knowledge D: either active or passive knowledge
- When cells such as white blood cells of a vertebrate engulf bacteria, the membrane transport mechanism used is ( ). A: receptor-mediated endocytosis B: active transport C: passive transport D: Phagocytosis E: exocytosis
- Which of the following server clusters offers increased availability， performance， and scalability？（） A: Passive/active B: Active/passive C: Passive/passive D: Active/active
- English is inclined to use more syntactic passive and less notional passive. A: 正确 B: 错误
- There are two forms of passive: be-passive and ____ -passive. The different is that "be"can be used as operator in a negative statement or in a question, but "___".
内容
- 0
The parking brake is a ( ) brake with ( ) control. A: electro-dynamic, active B: electro-dynamic, passive C: pneumatic, passive D: pneumatic, active
- 1
Active transport
- 2
Secondary active transport
- 3
The teacher plays a/an ______ role in Total Physical Response method. A: active and direct B: active and indirect C: passive and direct D: passive and indirect
- 4
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