Answer:
Plant cells have cell walls.
Explanation:
While both plant cells and animal cells have cell membranes, only plant cells have a cell wall, the hard outer shell of the cell.
A hypertonic solution was added to it and it leads to the cell shrinking.
Hypertonic means the solution has a lower water potential than the cell, and because of osmosis, water molecules will flow from a region of higher water potential to a region of lower water potential, through the semi permeable membrane, which is the cell membrane. Therefore, the water will flow away from the cell. This process is caused by natural tendency. The cell lose so much water that the cell shrink.
Note that only animal cells shrink if put in hypertonic solution, plant cell does not since it has a cell wall. In plant cells, cell membrane will detach from the cell wall and plasmolysis occurs.
#1: The earth came from nothing.
#2: Man evolved from apes.
#3: Over time, animals evolve and become better.
#4: There is no deity/creator/higher power
#5: The earth is approx. 4.54 billion years old
Answer:
a. is converted to NAD+ by an enzyme called dehydrogenase
Explanation:
The electron transport chain of cellular respiration is the final step that oxidized NADH and FADH2. These reducing powers are formed during glycolysis and Kreb's cycle. Complex I of the electron transport chain present in the inner mitochondria membrane is NADH dehydrogenase. This protein complex accepts electrons from NADH and oxidizes it into NAD+. NADH dehydrogenase couples oxidation of NADH with the pumping of proton towards the intermembrane space.
You are right :) a hypothesis is just what you think is going to happen and a theory is where you explain everything about it(or you try to anyway)