The production of leukocytes is regulated by
A. erythropoietin.
B. colony-stimulating factor.
C. prolactin.
D. folic acid.
E. rennin.
Answer: B
You might also like to view...
Which process is the driving force behind the movement of xylem sap upward through the tracheids and vessels in xylem?
1.Bulk flow 2.Osmosis 3.Plasmolysis 4.Transpiration
Depending on the species, how many stomata are there on a single leaf?
1) Tens to hundreds 2) Hundreds to thousands 3) Thousands to millions 4) All of the above
In temperate-zone lakes, a __________ and a fall overturn cause vertical mixing of waters and trigger
a burst of productivity. Fill in the blank(s) with the appropriate word(s).
Which of the following statements is true about gene regulation in prokaryotes?
a. Promoters determine whether a gene is expressed b. Expressed genes make more DNA c. DNA binding proteins determine whether a gene is expressed d. RNA polymerase regulates gene expression