How would a houseplant respond to sunlight that comes from one direction?
a. by closing its leaves at night
b. by curling its stem around its leaves
c. by bending its stem toward the sun
d. by growing roots downward through the soil

What are the steps of how energy is transformed in plant cells?

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?