1. Which of the following would NOT be an area of study in life science? A. Studying how lions and hyenas interact. B. Measuring the rate at which bacteria divide. C. Comparing the reproduction of arctic plants with that of desert plants. D. Studying how volcanoes are formed.

2. A good scientific experiment involves _____. A. a control group and variable B. a control group and two variables C. a control group and as many variables as you need D. a control group and no variable

3. When we look at slides in the classroom, what type of microscope do we use? A. Compound light microscope B. Electron microscope C. Simple microscope D. Telescope

4. When a duck dives underwater, its inner eyelids automatically raise to cover the duck’s eyes. In this case, water acts as __________. A. homeostasis B. a stimulus C. a reaction D. an enzyme

5. The molecule that contains the information on how to make proteins and is the hereditary material of a cell is ____. A. ATP B. carbohydrates C. DNA D. a phospholipid

6. Cells ________. A. are the structures that contain all of the materials necessary for life B. are found in all organisms C. sometimes have specialized jobs D. All of the above

7. Henry wants to test the effects of different antibacterial soaps on the growth of bacteria. Which of the following should be the variable in his experiment? A. The type of bacteria B. The jars in which he places the bacteria C. The type of soap D. The amount of soap

8. Which statement best describes what happens to a unicellular organism when it is eaten? A. It reproduces sexually. B. Its energy is transferred to another organism. C. It reproduces asexually. D. It maintains homeostasis.

9. Which of the following is NOT found in animal cells? A. Cell wall B. Cell membrane C. Lysosomes D. Ribosomes

10. A ______ keeps the cytoplasm inside and controls what gets in and out of the cell. A. cell membrane B. chloroplast C. nucleus D. mitochondria

11. Most of the ATP produced by a cell is made in the _______. A. ribosome B. endoplasmic reticulum C. mitochondria D. chloroplast

Parent cross Aa x Aa. Attached ear lobes is the dominant trait and unattached ear lobes is the recessive trait. 12. What is the % chance the offspring will have attached ear lobes? A. 25 % B. 50 % C. 75 % D. 100%

13. What is the % chance the offspring are homozygous dominant? A. 25 % B. 50 % C. 75 %

14. If an animal cell does not have lysosomes, it would NOT be able to ______. A. make proteins B. make food using sunlight C. digest waste and foreign matter D. All of the above

15. Which of the following organelles turns the energy of the sun into glucose (sugar)? A. Mitochondria B. Chloroplast C. Ribosome D. Golgi complex

16.Which of the following statements is NOT part of the cell theory? A. All organisms are composed of one or more cells. B. All cells have a nucleus and a cell membrane. C. All cells come from existing cells.

17. Which primate is the closest relative to humans? A. LemurB. Baboon C. Chimpanzee

18. Prokaryotic cells do NOT have _____. A. DNA B. a true nucleus C. a cell membrane

19. The fact that all organisms have DNA as their genetic material can be used as evidence that ____. A. natural selection occurred B. all organisms may have descended from a common ancestor C. selective breeding takes place every day

20. What birth weight has the highest survival rate? A. 5 pounds B. 7 pounds C. 9 pounds

Fur Color B = blue fur b = red fur Parent cross: Bb x bb

23. Which of the following is a possible phenotype of the offspring for the Punnett square? A. Blue fur only B. Red fur only C. Both blue and red fur

24. What is the probability of the offspring having red fur? A. 0 % B. 50 % C. 100 %

25- The homozygous recessive phenotype is: A. BB B. Bb C. bb D. None of the above