Question 45 2 pts
Why do we need to breathe in oxygen gas?
O Oxygen gas allows us to build sugar molecules from carbon dioxide gas and water
o Oxygen gas allows us to build carbon dioxide molecules from water molecules
Oxygen gas allows us to build chlorophyll molecules and cell walls for our cells
o Oxygen gas allows us to release energy from food molecules
Question 46
2 pts
What information is contained in the order of nucleotides in a messenger

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

What does the positioning of transcription factors determine?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.