1. Bellwork 4-19-16 Read page 29 and answer questions 1-2.

2.  In the plant cell, which organelle uses light energy to make food for the plant?  Amitochondria  Bribosomes Cvacuole Dchloroplast

3.  During respiration, glucose (C6H12O6) and oxygen (O2) react together and they produce: Aoxygen (O2) and carbon (C). Bglucose (C6H12O6) and methane (CH4). Ccarbon dioxide (CO2) and water (H2O). Dhydrogen (H2) and oxygen (O2).

4.  In which organelle does respiration happen?  Amitochondria Bchloroplast Cvacuole Dcell membrane

5.  Which statement best explains how photosynthesis and cellular respiration are related to one another?  a.Plant cells are the only cells that perform either photosynthesis or cellular respiration.  b.Glucose is a product of both photosynthesis and cellular respiration.  c.Water is a reactant of both photosynthesis and cellular respiration.  d.Products in photosynthesis are reactants in cellular respiration.

7. Diffusion  Students placed a raw egg without its shell into a highly concentrated solution of sugar. If the amount of sugar in the solution is greater than in the egg, which of these is most likely to occur?  AWater will flow into the egg and cause the egg to expand.  BWater will flow out of the egg and cause the egg to shrink.  CThe sugar will dissolve the egg.  DThe sugar will break the egg into pieces.

8.  The diagram below shows a process that occurs in living organisms.  Which process is most likely represented in this diagram?  a.sexual reproduction b.cellular respiration  c.simple diffusion d.cell division

9.  Most single-celled aquatic organisms use oxygen that is dissolved in water. When the dissolved oxygen concentration in the water is greater than the oxygen concentration in the organism, oxygen molecules pass through the cell membrane into the organism. What process causes this movement of oxygen molecules? a.respiration b.photosynthesis c.mitosis d.diffusion

10. After a living cell is placed in pure water, the cell will a.enlarge when water diffuses across the membrane into the cytoplasm. b.shrink when large molecules are transported into the cytoplasm. c.enlarge when water from inside the cell is carried out across the membrane. d.shrink when sugars diffuse out of the cell across the membrane.

11. Quiz

12. 1. Which is the best definition of the term diffusion? A the movement of water across a cell membrane B the movement of water from root cells to leaf cells C the movement of particles from an area of high concentration to an area of low concentration D the movement of particles from an area of low concentration to an area of higher concentration

13. 2.  Which organelle is responsible for controlling the diffusion of nutrients in and out of the cell? Avacuole Bmitochondria Ccell membrane Dnucleolus

14. 3. Students placed a raw egg without its shell into a highly concentrated solution of sugar. If the amount of sugar in the solution is greater than in the egg, which of these is most likely to occur? A Water will flow into the egg and cause the egg to expand. B Water will flow out of the egg and cause the egg to shrink. C The sugar will dissolve the egg. D The sugar will break the egg into pieces.

15. 4. Which substance is a product of photosynthesis and a reactant in cellular respiration? A chlorophyll B carbon dioxide C water D glucose

16. 5. During respiration, glucose (C6H12O6) and oxygen (O2) react together and they produce: A oxygen (O2) and carbon (C). B glucose (C6H12O6) and methane (CH4). C carbon dioxide (CO2) and water (H2O). D hydrogen (H2) and oxygen (O2).

17. 6.

18.  A student put a stalk of wilted celery into a glass of water. After one hour, the celery was no longer wilted.  Which sentence best explains why the celery stalk was no longer wilted?  a.Salt diffused out of the cells of the celery stalk.  b.Salt diffused into the cells of the celery stalk.  c.Water diffused out of the cells of the celery stalk.  d.Water diffused into the cells of the celery stalk. 7.

19. 8.  Which of these equations shows the reactants and products of photosynthesis?   Asugar + carbon dioxide  oxygen + water Bwater + oxygen  sugar + carbon dioxide Csugar + oxygen  carbon dioxide + water Dcarbon dioxide + water  sugar + oxygen

20. 9.

21. 10.  Most single-celled aquatic organisms use oxygen that is dissolved in water. When the dissolved oxygen concentration in the water is greater than the oxygen concentration in the organism, oxygen molecules pass through the cell membrane into the organism. What process causes this movement of oxygen molecules?  a. respiration c. mitosis  b. photosynthesis d. diffusion