Which of the following is a peptide hormone?
a. adrenaline
b. ACTH
c. progesterone
d. melatonin
e. prostaglandin
b
You might also like to view...
Which of the following cell types can become the meristematic cells of a vascular cambium? Select all correct choices
A. shoot apical meristem cells B. procambial cells C. epidermal cells D. parenchymal cells
The portion of the cell cycle when the cell is growing and does not contain a replicated genome is referred to as:
A. Cytokinesis B. Mitosis C. S D. G1 E. G2
N-acetylglucosamine is a repeating disaccharide found in the extracellular matrix.
a. true b. false
The key differences between cell types that allows them to be differentiated from one another are ________, the result ofÂ
A. the rate of gene expression in different cell types; varying density of RNA polymerase to produce more mRNA in some cells than others. B. the amount of protein present in different cell types; varying density of ribosomes to produce more polypeptides in some cells than others. C. the proteins being produced in each cell type; transcription factors regulating which genes are expressed and their level of expression. D. the DNA present in the nucleus of each cell type; differential sorting of chromosomes during mitosis when the cells are dividing.