Answer:
Animal organs and organ systems constantly adjust to internal and external changes through a process called homeostasis (“steady state”). These changes might be in the level of glucose or calcium in blood or in external temperatures. Homeostasis means to maintain dynamic equilibrium in the body
Answer:
Most living things need oxygen to survive. Oxygen helps organisms grow, reproduce, and turn food into energy. Humans get the oxygen they need by breathing through their nose and mouth into their lungs. Oxygen gives our cells the ability to break down food in order to get the energy we need to survive.
Explanation:
Answer:
e) Arginine
Explanation:
The Urea Cycle -
Urea cycle also called the TCA cycle , takes place in the ureotelic organisms . It is the cycle of biochemical reactions which helps in the production of urea from ammonia .
The highly toxic ammonia produced is excreted out of the organism's body .
Now, in one of the biochemical reaction , an amino acid arginine is used and helps for the production of urea and ornithine as the products and this step occurs in the cytosol of the cell .
Answer:
21%
Explanation:
To remember this percentage, use the amount of land and water on earth, like this: 3 (land) x 7 (water) = 21
(note: oxygen does not change depending on land or water amount)
