1. ____________ is best described as away of knowing. Science

2. A well-tested explanation that explains a lot of observations is a theory

3. A personal preference or point of view is a bias

4. The process by which organisms keep everything inside their bodies within certain limits is called homeostasis.

5. The branch of biology dealing with interactions among organisms and between organisms and their environment is called ecology

6. The simplest grouping of more than one kind of organism in the biosphere is a community

7. The lowest level of environmental complexity that includes living and nonliving factors is the ecosystem

8. Give an example of a primary producers plants

9. __________ get their energy by consuming only plants. herbivores

10. __________ get their energy by consuming only other animals. carnivores

11. What animals eat both producers and consumers? omnivores

12. A word that means the same thing as consumer is heterotroph

13. The repeated movement of water between Earth’s surface and the atmosphere is called the water cycle

14. Nonliving factors in the environment abiotic

15. Living factors within an ecosystem biotic

16. Which are two ways a population can increase in size? increased in birthrate and immigration

17. Something that controls the growth or size of a population is a limiting factor

18. Competition, predator/prey relationships, parasitism, crowding, and disease are examples of density- ____________ limiting factors dependent

19. Which are two ways a population can decrease in size? decreased birthrate and emigration

20. The gray-brown haze often found over large cities is called smog

21. Who used a compound microscope to see chambers within cork and named them “cells”? Robert Hooke

22. What advance in technology made the discovery of cells possible? the microscope

23. Cells are the basic units of life. All living things are made of cells. All cells are produced from existing cells. The following are principle of the__________ cell theory

24. Looking at a cell under a microscope, you note that the cell lacks a nucleus. What kind of cell is it? prokaryote.

25. Give an example of a prokaryotes? bacteria

26. Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use? mitochondrion

27. Storing DNA is a function of the nucleus

28. Which organelle would you expect to find in plant cells but not animal cells? chloroplast

29. Which of the following structures serves as the cell’s boundary from its environment? cell membrane

30. Which means of particle transport requires input of energy from the cell? active transport

31. An ______________is a group of organs that work together to perform a specific function. organ system

32. A group of similar cells that perform a particular function is called a tissue.

33. __________ is released from ATP when a phosphate group is removed. Energy

34. Organisms that cannot make their own food and must obtain energy from external sources are called heterotrophs

35. Autotrophs produce carbohydrates during photosynthesis

36. In the overall equation for photosynthesis, six molecules of carbon dioxide and six molecules of water result in a molecule of sugar and six molecules of oxygen.

37. The products of the light- dependent reactions are ATP, NADPH, and __________. oxygen gas

38. Another name for the light-independent reactions is Calvin cycle

39. The Calvin cycle takes place in the stroma

40. What is a product of the Calvin cycle? high-energy sugars

41. What is the correct sequence of events in cellular respiration? glycolysis  Krebs cycle  electron transport

42. What are the reactants in the equation for cellular respiration? glucose and oxygen

43. What is the products of cellular respiration? Water, Carbon dioxide, and ATP

44. Cellular respiration is called an aerobic process because it requires oxygen

45. Where does glycolysis takes place in the cell? cytoplasm

46. Glycolysis requires how many ATP to get the reaction started? 2 ATP

47. What are the electron carriers that plays a role in cellular respiration? NAD+ and FAD+

48. Cellular respiration uses 1 molecule of glucose to produce approximately ___ ATP molecules. 36

49. The two main types of fermentation are called alcoholic and lactic acid

50. What high-energy electron carriers pass H+ ions onto the electron transport chain? NADH and FADH2