Answer:
B) Multicellular Simple gland
Explanation:
Exocrine Glands:Glands that secrete their products onto the apical(or epithelia) surface directly or via epithelial ducts or tubes that are connected to the apical surface. These Exocrine glands are composed of highly specialized epithelial cells..
Exocrine glands can either be branched or Unbranched based on the arrangement.
*Multicellular simple glands*:Glands that have an *unbranched duct* into which cells secrete. Each secretory portion empties separately on an epithelial surface.
They help work together because when the heart pmps blood through the body and the cells flow through the blood non stop its like a barrier of protection
Well you can mark out a and d.. because cellular respiration uses energy in glucose to make atp
The R group varies, and it is the carbon-phosphate backbone
