MICROSCOPE AND CELL STRUCTURE. Millionaire Game

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1 MICROSCOPE AND CELL STRUCTURE Millionaire Game

2 TRUE OR FALSE #1. The first compound microscope was made by Dutch business man Anton Van Leeuwenhoek in 1674.

3 ANSWER #1: False: The first compound microscope was made by eyeglass makers Zacharias and Hans Janssen. It was a tube with a lens at each side.

4 TRUE OR FALSE #2. Robert Hooke was one of the first people to observe cells. He used his microscope to observe a thin slice of cork.

5 ANSWER #2. True: Robert Hooke was one of the first to observe cells. He viewed cork cells under a compound microscope.

6 MULTIPLE CHOICE #3. Why did Robert Hooke name what he saw under the microscope a cell? What part of the cell was he seeing to name it cell? A. The word cell means empty space /cell membrane B. The word cell means living thing /cell wall C. The word cell means small rooms /cell wall D. The word cell means hollow /nucleus

7 ANSWER #3. C: When Hooke viewed cork cells under the compound microscope the empty spaces in the cork looked like tiny rectangular rooms. The word cell means small rooms. The reason he saw the empty space is cork cells are no longer alive and he therefore only saw the cell wall

8 TRUE OR FALSE #4. The total magnification for a microscope with an eyepiece of 15x and the objective lens of 10x is 25x

9 ANSWER #4. False: A microscope with an eyepiece of 15x and objective lens of 10x has a total magnification of 150x

10 TRUE OR FALSE #5. A cell is the basic unit of structure of all matter (living or not living)

11 ANSWER #5. False! A cell is the basic unit of structure and function for living things

12 MULTIPLE CHOICE #6. What is the function of the nucleus in the cell? A. Carries protein to other parts of the cell B. Major controller of cell s activities C. Allows substances to enter and leave the cell D. The powerhouse of the cell because it converts sugar into energy

13 ANSWER #6. B. The nucleus controls all cell activities

14 TRUE OR FALSE #7. The vacuole is only found in plant cells and uses energy from the sun to make food for the plant

15 ANSWER #7. False: The vacuole stores water and food for the cells (usually bigger in plant cells) and the chloroplast is found in plant cells and uses energy from the sun to make food for the plant

16 MULTIPLE CHOICE #8. What part of the cell converts sugar into energy? I can be compared to the furnace in our house and controls our metabolism. A. Vacuole C.Ribosome B. Cytoplasm D.Mitochondria

17 ANSWER #8. D! The mitochondria breaks down sugar molecules into energy and is known as the powerhouse of the cell

18 TRUE OR FALSE #9. The cell below is a plant cell because it has a cell wall and green structure called chloroplasts

19 ANSWER #9. True! A plant cell has a cell wall which give the plant support and a regular shape. Chloroplasts are only found in plant cells and have a green color because they contain chlorophyll

20 TRUE OR FALSE #10. The chloroplast uses energy in from the sun to make food for the plant (photosynthesis) Animals cells do not have these because animals do not (cannot) make their own food and must eat.

21 ANSWER #10. True: The chloroplast uses energy in from the sun to make food for the plant (photosynthesis) Animals cells do not have these because animals do not (cannot) make their own food and must eat.

22 MULTIPLE CHOICE #11. What is the arrow pointing to? A. Cell Wall B. Cell Membrane C. Cytoplasm D. Nucleus

23 ANSWER #11. B. The cell membrane is the outside portion of an animal cell and just inside the cell wall on a plant cell.

24 TRUE OR FALSE #12. A cell membrane has a selectively permeable membrane that controls the movement in and out of the cell

25 ANSWER #12. True! The cell membrane is a selectively permeable membrane.

26 MULTIPLE CHOICE #13. Which of the following terms refers to movements of molecules from an area of higher concentration to an area of lower concentration? A. Diffusion B. Concentration C. Passive Transport D. Collision

27 ANSWER #13. A. Diffusion refers to movements of molecules from an area of higher concentration to an area of lower concentration

28 TRUE OR FALSE #14.Osmosis is the diffusion of water across a membrane

29 ANSWER #14. True! Osmosis is the diffusion of water across a membrane. Water molecules will move until it is evenly spread on both sides of the membrane

30 MULTIPLE CHOICE #15. If a cell that is 80% water is placed in a solution that is 40% water, which way will the net movement of water go? A. Into the Cell B. Out of the cell C. Neither way

31 ANSWER #15. B. The cell is hypertonic. Water will travel out of the cell in order to reach an isotonic state or equilibrium

32 #16 MULTIPLE CHOICE Sarah put a carrot slice in a beaker of cold salty water and another slice (same size and same carrot) in cold fresh water. After an hour she found that the one in fresh water was crisper. Why? A) Fresh water slice was from a crisper carrot B) Fresh water slice was smaller C) Fresh water in beaker absorbed water from the cells of the carrot D) Fresh water in beaker went into cells of carrot

33 #16: ANSWER D. The carrot in the fresh water would absorb the water from the fresh water beaker and become crisper. However, the carrot in the salty water would lose water and therefore become less crisp.

34 #17: MULTIPLE CHOICE Brine shrimp have been dying in the south end of the Great Salt Lake. Scientists have also noticed that the salt % in this end has increased. Using what you know about osmosis, how could the salt % cause the shrimp to die? A) The brine shrimp eat the salt, which is toxic B) The salt water causes the brine shrimp to lose water, shrivel up and die C) The brine shrimp are filling up with water and dying D) The salt water causes a chemical reaction and cooks the shrimp

35 #17: ANSWER B. Salt draws water in its direction. So the shrimp s cells would lose water to the salty water in the lake and therefore shrivel up and die.

36 #18: MULTIPLE CHOICE A student observes a flower, an apple, a dog, and a tree. Which of the organisms that the student sees has different cells than the rest, and how are the cells different? A) The flower is different because its cells are the only ones without a nucleus. B) The apple is different because its cells are the only ones with a cell membrane. C) The tree is different because its cells are the only ones with chloroplasts. D) The dog is different because its cells are the only ones without a cell wall.

37 #18 ANSWER D) The dog is different because its cells are the only ones without a cell wall.

1.1 Characteristics common to organisms

Biology Form 3 Page 5 Ms. R. Buttigieg 1.1 Characteristics common to organisms see GCSE Biology pg. 292 Biology is the study of living things. We call living things organisms. Plants and animals are ALL