TASK # 1 IMMUNE SYSTEM-LIVING ENVIRONMENT 2 TERM 2 Answer ALL the questions: TOTAL 25pts
1.
if the
homeostasis fail. (2points)
Or
I
2. What is another name for microbes that make
humans sick?
(1 pt)
3. What are the five cells and structures of immune
system?
and
--(5pts)
4. Explain three levels of immune system action
against invaders. (12pts)

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.