Light energy is absorbed by _ found in the membranes of which are saclike structures inside _. The light
energy dislodges _, which are used to make _. Energy
from this process is used to make __. The electrons and
energy are used to make sugars, which the plant stores or
consumes for energy.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

b - the respond is innate and varies over time.

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