The question is somewhat confusing. I would choose "none of the above" because none of the choices are blood vessels. However, the heart is the pump that moves blood through the network of blood vessels that distribute and collect materials throughout the body.
The correct answer is the letter D
Contraction of skeletal muscles against the lymph vessel
The lymph usually move in the body in its own vessel and travels from the interstitial spaces to the subclavian veins at the neck area. The lymphatic system does not have a heart to pump and move the fluid. The movement of lymph depends on the movements of the muscles and joints in the body. In this mechanism upward movement is possible. It will move towards the neck where it will be filtered and will go again into the subclavian veins.
Answer:
<em>ATP synhtesis in both chloropasts and mitochondria involves the process called CHEMIOSMOSIS.</em>
<em>Explanation:</em>
<em>Chemiosmosis is when ions move by diffusion across a semi permeable membrane , such as the one inside mitochondria. The function of this process is the production of adenosine triphosphate (ATP), that is the main molecule utilized for energy by the cell. Eukaryotics cell produces ATP during cellular respiration in the mitochondria .</em>
