Answer:
D
Explanation:
Giant Tube worms are the primary source
Answer: Receptor protein.
Explanation:
The receptor protein on the cell surface would enable a cell to respond to glucagon. The glucagon binds to the GPCR on the liver and muscle cells and is known as glucagon receptor.
This receptor then stimulates cells to release glucose into the blood stream. Another hormones involved during this process is glucagon like peptide 1.
It works by binding to another GPCR which is GLP-1 receptor found on the pancreatic cells.
Answer:
B. Microorganisms in their digestive tracts hydrolyze the cellulose to individual glucose units.
Explanation:
Cows are ruminants. They lack the cellulose digesting enzymes. However, they have a stomach with four chambers. The first two chambers of their stomach house symbiotic bacteria and protists. These microbes have the ability to digest cellulose into simple sugars. These simple sugars are then used by the host and the bacteria themselves. The microbes digesting the cellulose produce the enzyme cellulase and breakdown cellulose anaerobically.
ANSWER: 8.9
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Answer:
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