2 Elodea plants in beakers of water were placed at different distances from a light source. The number of bubbles that formed on the plants was counted and recorded. The data table shows the resultsBeakerDistance From LightBubbles Per Minute1200 cm2100 cm10350cm45420cm83What gas do the bubbles consist of?Carbon dioxide c. water vaporHydrogen d. oxygenWhat is the relationship between the distance from the light source and the rate of bubble formation?The rate increases as the distance increasesThe rate decreases as the distance increasesThe rate stays the same as the distance increasesThe rate changes in a way unrelated to distance
3 3. If another beaker with elodea were placed 150 cm from the light, about how many bubbles would form each minute?a. 1 c. 11b. 7 d. 244. What is the independent variable in this experiment?a. type of plant c. distance from lightb. number of bubbles d. amount of time
4 Plants and animals are typically multicellular organisms Plants and animals are typically multicellular organisms. For a long time, scientists tried to classify any unicellular organism that had a nucleus as either a single celled plant or single celled animal. One group of unicellular organisms, Euglenas, was particularly difficult to classify. These tiny organisms can be found living in most ponds. What is puzzling about euglenas is they have characteristics of both plants and animals.Some scientists argue that euglenas are more like plants because many of them have chloroplasts. Chloroplasts are cellular structures that enable both plants and euglenas to capture energy from the Sun. Other scientists argued that euglenas are more like animals because they can take in food particles from the water. Euglenas also have flagella, tail like structures that enable them to swim. The euglena even has an eyespot for sensing light.5. What cellular structures enable plants and euglenas to capture energy from the sun?Flagella c. nucleiChloroplasts d. eyespots.
5 6. What cellular structures are common to plants, animals, and Euglenas? Flagella c. nucleiChloroplasts d. eyespots7. In what way are euglenas different from both plants and animals?They have no nuclei c. they live in pondsThey are unicellular d. they get energy from food
6 8. what does an eyespot do?a. senses light c. provides energyb. captures food d. senses movement9. Having a flagella makes Euglena similar to animals because it allows euglenas to do what?a. eat c. sense lightb. get energy d. move
7 10. A ___________ is a group of tissues that work together to perform a certain function. A. organ systemB. organC. cellD. organelle11. Your heart functions because tissue like cardiac muscle, blood and connective tissues. At which level of organization is your heart?A. organ system c. cellB. organ d. organelle
8 13. Which of the following is listed from least to most complex? 12. The central nervous system consists of the brain and spinal cord. What is the CNS an example of?A. organ system c. cellB. organ d. organelle13. Which of the following is listed from least to most complex?A. organ, organism, cellB. cell, tissue, organism, organ systemC. cells, organ, organismD. tissue, organism, organ
9 14. Which of the following is an example of a tissue? A. chloroplastsB. stomachc. humanD. bicep15. Which statement is true about mitochondria?A. it has only one membraneB. it has no membraneC. it is circularD. it is where cellular respiration occurs
10 16. Where do eukaryotic cells store hereditary information? A. cytoplasmB. nucleusC. centriolesD. lysosomes17. all body cells, except the sperm and the ova, are ___________ cells.A. germ c. somaticB. reproductive d. spindle
11 19. What is the result of mitosis? A. two identical cells with identical amounts of genetic materialB. four cells that have half the genetic material of the parentC. two cells that have half the genetic material of the parentD. genetic variation, which is vital to species survival
12 20. which statement does not correctly describe living things? A. they must growB. they use sexual reproductionC. they use metabolismD. they are made of cells21. which statement below correctly describes an organism’s response to environmental stimuli?A. water in a rain cloud freezes to form snowB. solar radiation heats the soil to create windC. flowers bloom in springtimeD. in a desert, evaporating water leaves behind salts
13 22. which statement correctly describes a metabolic process? A. Animals take in oxygen for cellular respirationB. sea turtles come ashore only to only eggs.C. baby orangutans learn from their mothers to build tree nestsD. adult male lions roar to protect their home territory
14 23. which characteristics listed below is common to all living organisms? A. able to moveB. uses sunlight to trap energyC. reproduces using eggsD. maintains homeostasis
18 25. How are chloroplasts and mitochondria similar?A. Both capture and use the Sun’s energy.B. Both change energy from one form to another.C. Both combine oxygen with food to produce energy.D. Both contain chlorophyll to make food and release energy.
35 42. What is one major function of the lymphatic system? A. transporting oxygenated and deoxygenated bloodB. providing support and structure for the bodyC. transmitting information from the environment to the brainD. preventing foreign particles from entering the bloodstream
36 43. How does the stomach aid in digestion? A. it mechanically breaks down fatsB. it chemically and mechanically breaks down foodC. it mechanically breaks down sugarD. it chemically breaks down proteins
37 44. what is the main job of the respiratory system? A. deliver carbon monoxide to the important parts of the bodyB. pumping blood to the capillariesC. taking oxygen needed for respirationD. taking in carbon dioxide for cells to use
38 Linnaeus’s classification system PhylumKingdomFamilyOrderClassSpeciesGenus
39 45. If two organism belong to the same order, they must belong to the same a. classB. genusC. speciesfamily
40 46. An organisms specific name is based on how it is classified 46.An organisms specific name is based on how it is classified. Which of the following classification levels determine the name?A. kingdom and phylumB. genus and speciesC. class and orderD. kingdom and species
41 47. To which kingdom do mushrooms belong? A. eubacteriaB. ProtistaC. fungiD. plantae48. An organism is multicellular and made up of eukaryotic cells. The organism can move from one place to another. Its cells do not have cell walls or chloroplasts. In which kingdom does it belong?B. animaliaC. plantaeD. fungi
43 Cellular RespirationC₆H₁₂O₆+6O₂ energy + 6CO₂+6H₂O
44 49. Which of the following statements is true? A. plants use chlorophyll to produce carbon dioxideB. plants break down chlorophyll as foodC. plants use chlorophyll to trap sunlightD. plants store chlorophyll as waste
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