Carbon dioxide because its a fas
That would be the Endocrine system which secretes hormones into the blood through glands
Answer:
The original phagocyte secretes cytokines that attract other phagocytes
Explanation:
Before phagocytosis occurs and with the presence of an original phagocyte at the scratch site mostly a macrophage (also a phagocyte), chemical signals signals are given off to attract phagocytes to the scratch site.
These chemical signals may be cytokines that are given off by macrophages located in the tissue near the infection site etc. These cytokines produced can then stimulate the recruitment of phagocytes including the neutrophils and monocytes from the blood.
It is convenient to divide the photosynthetic process in plants into four stages, each occurring in a defined area of the chloroplast: (1) absorption of light, (2) electron transport leading to the reduction of NADP+ to NADPH, (3) generation of ATP, and (4) conversion of CO2 into carbohydrates (carbon fixation).
Biologists study cells due to the cell relation to that of animal cell
<h3>What are yeasts?</h3>
Yeast are eukaryotic organisms which are part of the fungus kingdom.
They are important to biologist because they tend too carry out all the functions of the eukaryotic cells and they are known to be closely related to animals
Learn more on yeasts here: brainly.com/question/25088514
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