Transport of two different substances can be linked. If the transport is in the same direction it is called ________; if the transport is in opposite directions it is called ________.
Fill in the blank(s) with the appropriate word(s).
symport, antiport
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When a neuron membrane potential becomes less negative, it is said to be ____
a. depolarized b. hyperpolarized c. repolarized d. damaged e. activated above the threshold potential
____________ shows that the building blocks of life form naturally under a wide range of circumstances
a. The Miller-Urey experiment b. The Chicxulub event c. The earliest fossils d. The Drake equation e. Stromatolites
According to the cohesion-tension mechanism of water transport, why does cohesion occur?
a. because water molecules tend to form hydrogen bonds with each other b. because water is pushed into the xylem by bulk flow c. because waxy coatings on the insides of xylem keep water molecules together in the xylem d. because evaporation removes water from the leaves
The peripheral nervous system consists of the brain and spinal cord
Indicate whether the statement is true or false