Answer:
c is the best answer I would have use
It’s E,two independent linear equations,each having at least one of the variables
When a molecule is being moved against the concentration gradient, or is too large to be moved by passive transport.
Answer:
John accidentally put his hand on a burning stove and immediately drew it back, yet still he is experiencing pain.
In this sentence, stimulus will be a hand touching fire of the stove. External response will be moving of the hand from the stove immediately.
A stimulus can be described as any physical or chemical change which elicits a response form a living organism. The stimulus is detected as a signal and response is generated in accordance to the signal.