Insulin can activate lipid synthesis in adipose cells and block breakdown of glycogen in the liver. How could one hormone have different effects on different organs?
_____ Adipose and liver cells may express distinct insulin receptors.
_____ Adipose and liver cells may have unique signal transduction pathways activated by insulin.
_____ Adipose cells do not express the insulin receptor while liver cells do.
_____ Adipose and liver cells may contain different transcription factors that regulate the expression of different genes.
__X__ Adipose and liver cells may express distinct insulin receptors.
__X__ Adipose and liver cells may have unique signal transduction pathways activated by insulin.
_____ Adipose cells do not express the insulin receptor while liver cells do.
__X__ Adipose and liver cells may contain different transcription factors that regulate the expression of different genes.
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Tissues present during development of an organ but not found in the fully formed organ are removed
by
a. apoptosis only. b. programed cell death only. c. molecular signals received by receptors on marked cells only. d. apoptosis and programed cell death. e. apoptosis, programed cell death, molecular signals received by receptors on marked cells.
incinerator
What will be an ideal response?
Following fertilization, the somatic cells of humans divide by:
a. apoptosis b. mitosis c. meiosis d. DNA replication
The chamber of the inner ear that is shaped like a tightly-wound snail shell is the ________.
Fill in the blank(s) with the appropriate word(s).