Answer:
it is the movement of ions/molecules across a cell membrane into a higher concentration region which is assisted by enzymes and requiring energy
Explanation:
cellular energy to reach this movement
cellular decomposition
cellular respiration
cellular evaporation
Answer:
Superposition. The law of superposition states that a sedimentary rock layer in a tectonically undisturbed sequence is younger than the one beneath it and older than the one above it. This is because it is not possible for a younger layer to slip beneath a layer previously deposited.
light
touch
sound
Cells in the human eye send nerve impulses to the brain that causes the pupil to constrict. This is an example of a reaction to the light stimuli. Thus, the correct option is B.
Pupils are the part of eye which respond to three distinct kinds of stimuli which include their constriction in response to brightness of light, this is called as the pupil light response, constrict in response to near fixation which is known as the pupil near response, and dilate in response to increases in the arousal and mental efforts, either these are triggered by an external stimulus or occur spontaneously.
Light is the stimulus and the impulses in response to this reach the brain through the optic nerve and the response due to this is conveyed to the pupillary musculature through autonomic nerves which supply the eye.
Therefore, the correct option is B.
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