Figure 9 below depicts a part of mitosis. What is structure 3 in the image?

If there are three test tubes: Test Tube A contains a snail submerged in water, Test Tube B contains an aquatic plant submerged in water, and Test Tube C contains a snail and an aquatic plant submerged in water. If Test Tube A has only a snail submerged in water, what process or processes will be occurring in Test Tube A as time progresses?  

Figure 8 below is a depiction of the cell cycle, but each name/stage/phase has been replaced with letters. What process is Part D in Figure 8?

What is structure 3 in Figure 7 called?

Aerobic cellular respiration means respiration that requires oxygen.

What is structure 1 in Figure 7 called?

In reference to Figure 3, the H+ ions are moving from high concentration to low concentration across the membrane through ATP Synthase (a protein). What type of transport is this, and does this require energy to occur?  

Figure 10 below represents a cross-sectional view of onion cells under the microscope, similar to what we were able to observe in our Cell Cycle Lab activity. What phase of the cell cycle is cell sample 2 likely in?

What is the name of the outermost layer of a gastrula?  

Figure 5 below depicts a cross section of an organelle responsible for photosynthesis. What is Structure 4 in Figure 5?