The portal vein directs blood from the GI tract to the liver. The liver is the first organ to receive nutrients that are absorbed from the GI tract. It is the ‘gatekeeper’ and is responsible for filtering out possible toxins before they reach delicate tissues such as the brain.
Answer:B
Explanation:Mellonie cleared her throat before the presentation because she was nervous
Answer:

Explanation:
This mitochondria is also called "the powerhouse of the cell" because it powers the metabolism, cellular processes, and chemical reactions in the body.
How does the mitochondria provide power?
- They are the site of cellular respiration, a process that makes ATP molecules, or more specifically adenosine triphosphate molecules.
- These molecules provide the useable <u>energy</u> needed for many different life processes, including protein synthesis.
So, the best answer choice is <u>C. They provide energy</u>