Explanation:
Cardiac muscles straited involuntary helps to pump blood through the body.
skeletal straited voluntary helps in body movement.
smooth non straited involuntary helps food to go digestive tract.
Answer:
the right answer is
tRNA bonds with mRNA, bringing in amino acids.
Explanation:
Structure A is used for (4) cell communication. The cell membrance has receptros for cell communcation.
Structure B is used to (1) extract energy from nutrients. The mitochondria is the power house of the cell.
Structure C is used for (1) protein synthesis. The golgi apparatus is where protein is created.
Explanation:
Evaporation-A phase change from a liquid to a gas
Melting-A phase change from a solid to a liquid
Freezing-A phase change from a liquid to a solid
Sublimation-A phase change from a solid to a gas
Hope this helped, lots of love,
-Kiddoo <3
A controlled variable is not changed throughout an experiment. It is there so that the other variables being tested on can be better understood.