If a person gets a shot of epinephrine, he or she almost immediately feels the effects (e.g., increased heart and breathing rates). If the same person gets a shot of a steroid hormone such as cortisone, there is no immediate response

What is the reason for this difference?


Epinephrine is water soluble and causes an immediate response, whereas steroid hormones cause a slower change by stimulating gene transcription.

Biology & Microbiology

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Which of the following types of plant hormones appears to regulate the expression of genes associated

with a plant's growth responses to light?

a. salicylic acid b. brassinosteroids c. gibberellins d. jasmonates e. oligosaccharins

Biology & Microbiology

Four of the five answers listed below are classified as white matter. Select the exception

a. myelin sheath b. descending tracts c. corpus callosum d. cerebral cortex e. ascending tract

Biology & Microbiology

A glycoprotein destined for secretion from the cell would move through the Golgi complex which sequence?

a. cis face to medial region to trans face b. trans face to cis face to medial region c. trans face to medial region to cis face d. cis face to trans face to medial region e. medial face to trans face to cis face

Biology & Microbiology

The ABO blood group in humans is an example of __________ producing four phenotypes.

A. polygenic inheritance B. multiple alleles C. people with genetic disorders D. pleiotropy

Biology & Microbiology