Which of the following is true of both neurotransmitters and hormones?
A. They both travel through the bloodstream to target cells.
B. They both influence the activity of multiple organs simultaneously.
C. They are both produced in glands.
D. They both interact with receptors inside or on the surface of target cells.
E. They are both involved in paracrine signaling.
Answer: D
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What will be an ideal response?
Which of the following areas is the most likely
location for the origin of life? a. abyssal zone b. hydrothermal vents c. pelagic zone d. neritic zone e. intertidal zone
What nucleotide sequence would be found on the complementary DNA strand of the strand shown here?
A) ACTGT
B) UGAGA
C) TGACA
D) TGUGU
The ________ is a waxy band of cells surrounding endodermal cells in the root.
A. cortex B. pericycle C. Casparian strip D. root band