b. commensalism
d. coyote is at the top of that chain so it gets the least energy
c. mistletoe is a parasite. the other options aren't symbiotic relationships
B and C)
They often obtain most of their nutrients through the cell membrane as diffusion is able to take place passively and so at no energy loss to the organism, this can be essential for a single celled organism as they are able to produce a lot less energy due to having fewer mitochondria in comparison to multicellular organisms.
They also require few resources as single celled organisms are very small and so require only a small amount of raw resources for respiration because they have a small energy demand to meet.
Answer:
Glucose is a carbohydrate, and is the most important simple sugar in human metabolism. ... Glucose is one of the primary molecules which serve as energy sources for plants and animals. It is found in the sap of plants, and is found in the human bloodstream where it is referred to as "blood sugar"
Explanation: