Answer:
Answer is given below;
Explanation:
Lipids:
lipids are naturally occuring solvents that is insoluble in polar solvents(i.e water). They are composed of fatty acids and glycerols.Fatty Acids of lipids maybe
- Saturated Fatty acids
- Un-saturated Fatty acids.
Saturated Fatty Acids: They have carbon atom binded to hydrogen atom.
Un-saturated Fatty acids: They have some of their carbon atoms doubly attached in place of Hydrogen atom.
Answer:Nuclear fusion
Explanation:
Which event takes place first in the stages before the birth of a star? Gravity pulls gas and dust together. A protostar forms as mass increases. Nuclear fusion begins under high pressure.
I think the choice of answer for each question provided were not clearly stated. But I will provide the answer to each question.
1. <span>Where chemicals pass between cells and blood? Answer: Capillaries
2. </span><span>An atmospheric gas expelled by body cells. Answer: Carbon dioxide
3. A </span>vessel that carries blood away from the heart. Answer: Pulmonary artery
4. The liquid that carries chemicals and blood cells through the circulatory system. Answer: Plasma
5. Air sacs within the lungs . Answer: Alveoli
6. A lower part of the heart. Answer: The lower part of the heart is made up of two chambers called left and right ventricles.
7. Any of the arteries, veins or capillaries that carry blood through the body. Answer: Arteries
8. Vessels that carry blood back to the heart. Answer: Arteries
9. An upper part of the heart. Answer: The upper part of the heart is made up of two chambers called left and right atria.
As for question number 10, I cannot provide you an answer since the question posted is not valid. I hope this helps.
Breathing is the process of moving air out and in the lungs and Respiration is the movement of oxygen from the outside environment to the cells within tissues, and the removal of carbon dioxide in the opposite direction.
