A molecule can act as both a neurotransmitter and a hormone.
Answer the following statement true (T) or false (F)
True
Examples of molecules that can act as both are epinephrine and norepinephrine.
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Sperm cells mature and are stored within human males in the _____
A) urethra B) prostate C) epididymis D) seminal vesicles E) bulbourethral gland
Asian pearl divers hyperventilate in order to reduce the __________ concentration in the blood
a. oxygen b. hydrogen ion c. carbon dioxide d. chloride ion e. hemoglobin
Secondary metabolites are produced to
A. deter competitors. B. aid in reproduction. C. deter herbivores. D. aid in growth. E. deter competitors and aid in reproduction.
Spiegelman and colleagues demonstrated natural selection with RNA molecules. How did they satisfy the three ingredients for natural selection?
What will be an ideal response?