1. Case 21

2.  What question is this experiment designed to test?  A. What is the effect of light on the movement of Daphnia?  B. What is the effect of increasing heat on the heart rate of Daphnia?  C. How is the circulation of Daphnia affected when placed in a petri dish?  D. How is the heart rate of Daphnia affected by different amounts of water?

3.  A. 200-mL Erlenmeyer flask  B. 10-mL test tube  C. 2-mL pipette  D. 50-mL beaker

4.  The farmer observed more tomatoes on the plants with his fertilizer. They were also bigger than the other plants. The supply company claims the farmer’s study is invalid. What scientific reason does the company have to make this claim?  A. The farmer’s study did not include data on the height of the plants.  B. The farmer did not promote his fertilizer to enough companies to receive an offer.  C. The farmer needed a chemist to write out the chemical formula  D. The farmer’s study should have included a larger sample of plants and multiple fertilizers

5.  Which of the following would make this a controlled experiment?  A. Use different plant foods on each group of plants.  B. Give one group of plants water without plant food.  C. Give all plants equal amounts of water with plant food.  D. Use a different variety of plants for each type of plant food.

6.  What is the dependent variable?  A. The size of the pot in which the plants are grown  B. The pH of the soil in which the plants are grown  C. The amount of water given to the tomato plants  D. The height to which the tomato plants grow.

7.  Even though Needham’s results supported the theory, what criticism did other scientists have about the experiment?  A. The experiments were conducted only once.  B. A greater variety of broth should have been tested  C. Sterile flasks should have been used in the experiments  D. The broth was contaminated before the flasks were sealed.

8.  What cell structure is used in this transport?  A. Lysosome  B. Mitochondrion  C. Nuclear pore  D. Endoplasmic reticulum

9.  This charge difference gives rise to which type of bonds between water molecules?  A. Ionic bonds  B. Hydrogen bonds  C. Single covalent bonds  D. Double covalent bonds

10.  A. ADP  B. DNA  C. RNA  D. ATP

11.  A. Nucleus  B. Golgi body  C. Mitochondrion  D. Cell membrane

12.  A. Organ -> system -> cell -> tissue  B. Organ -> tissue -> system -> cell  C. Cell -> tissue -> organ -> system  D. Cell -> system -> tissue -> organ

13.  By what process do water molecules move into cells?  A. Facilitated diffusion  B. Active transport  C. Endocytosis  D. Osmosis

14.  A. Carbohydrate  B. Nucleic Acid  C. Lipid  D. Protein

15.  The neutralization is performed by which of the following?  A. Buffer solutions  B. Water molecules  C. Na+ and K+ ions  D. O2 and CO2 molecules

16.  Which of these is a basic difference in the two components?  A. Phospholipids are solid, but proteins are fluid  B. Phospholipids transport water while proteins transport fats  C. Phospholipids provide instructions and proteins follow these instructions  D. Phospholipids allow simple diffusion, but proteins are used in facilitated diffusion

17.  A. Different tissues carrying out similar functions  B. Similar cells contributing to a particular function  C. Different organs working together to perform a particular function  D. Similar organelles working together to perform different functions

18.  A. Does not require oxygen  B. Uses ATP to produce oxygen  C. Produces 36 molecules of ATP  D. Uses carbon dioxide to produce glucose

19.  A. 10  B. 20  C. 40  D. 80

20.  A. A haploid cell produces 2 haploid cells  B. A diploid cell produces 2 diploid cells  C. A haploid cell produces 4 diploid cells  D. A diploid cell produces 4 haploid cells

21.  A. Anaphase  B. Metaphase  C. Prophase  D. Telophase