It is also possible to move substances across membranes against their concentration gradient (from areas of low concentration to areas of high concentration). ... If the energy of ATP is directly used to pump molecules against their concentration gradient, the transport is called primary active transport.
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It would require that the csf acts exclusively on : Myeloblasts
myeloblasts is a unipotent stem cell, which differentiate into one of the effectors of the granulocyte series.
It is commonly found in bone marrow.
Answer:
Cells are arranged to form different types of TISSUE, which then work to perform specific jobs for the well-being of the animal.
<span>B. The food supply diminishes in all socioeconmic classes.</span>
