Across
- 3. A volcanic eruption would be what kind of limiting factor?
- 8. When a molecule of a solvent passes through a membrane from a low concentration to a higher concentration it is known as what?
- 9. What kind of environment would a cell have to be placed in, in order for water to leave the cell?
- 12. If an organism has stable chemical and physical conditions, what is it considered to be at?
- 13. A chemical reaction cannot occur because there is not any oxygen present. This chemical reaction would be considered what?
- 14. A chemical reaction may not be able to occur if not enough energy is present. What is the energy called that is needed for a chemical reaction to occur?
- 15. You throw a ball across the room. What human body system allowed you to move your arm in order to throw the ball?
- 19. What kind of environment would a cell have to be placed in, in order for water to enter the cell?
- 21. What reaction converts oxygen and glucose into water and carbon dioxide?
- 23. In the chemical reaction that makes ammonia, iron helps speed up the reaction. In this situation, what does the iron act as?
- 24. You are at a stop light that has just turned green so you put pressure on your gas pedal. Which human body system sent signals that allowed you to preform this action?
- 25. two molecules of water sticking to each other would be considered what?
Down
- 1. A chemical reaction occurs even though no oxygen is present. This chemical reaction would be considered what?
- 2. The oxygen content in blood decreases to 50% when entering the right side of the heart, and increases to 95% when entering the left side. What is this is an example of?
- 4. The availability of food would be what kind of limiting factor?
- 5. A crab moving to a new beach with more resources would be considered what?
- 6. The circulatory system in the human body is also what other kind of system?
- 7. In the human body, what things combine to make proteins necessary for life?
- 10. What reaction converts carbon dioxide and water into oxygen and glucose?
- 11. A rabbit moving out of a forest because there are limited resources would be considered what?
- 16. You run a mile, and start breathing heavily. Which human body system is allowing you to breathe in this way?
- 17. A bee pollinating a flower would be classified as which type of relationship?
- 18. When there is an equal concentration of molecules on each side of a membrane during osmosis it is referred to as what?
- 20. Reaction occurring in the mitochondrial matrix that produces carbon dioxide, NADH, FADH2, and ATP.
- 22. Starch, glycogen, and cellulose are examples of what?