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Biology Crash Course!! PowerPoint Presentation
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Biology Crash Course!!

Biology Crash Course!!

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Biology Crash Course!!

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  1. Biology Crash Course!!

  2. What are angiosperms? • Vascular plants, flowering, fruit, roots, stems, leaves

  3. What are gymnosperms? • Vascular, needle leaves, roots, stems, cones

  4. How do ferns reproduce? • spores

  5. What is pathogen? • Virus or bacteria that can make you sick

  6. What does food chain show? • Energy flow

  7. What is selective pressure on a species? • Something that can influence the survival of the species

  8. Types of bacteria • Archaebacteria—live in any type of environment; photosynthesis • Eubacteria—make you sick

  9. How does a hypothesis become a theory? • When it is supported by consistent data from many experiments

  10. Gametes must be haploid because • They will unite during fertilization to create a diploid cell

  11. T or F Enzymes function at a certain pH and temperature. Overheating or changing the pH can lose its ability to catalyze a reaction or function properly

  12. What is phototropism? • Plant moves toward the sunlight

  13. What is geotropism • Plant (roots) moves toward the earth (for nutrients, water)

  14. The variable being tested (independent variable) is the variable that: • Changes (ex: temperature, sunlight, pH)

  15. If two populations are being tested and one is moved to another location and a scientist notes physical variations in the populations. The variations were probably caused by the • Environment

  16. Evidence of common ancestry: • Fossil comparison • DNA/similar genes • Embryo development similarities • Body structure

  17. The variable being changed by the scientist (ex. pH, temperature, amount of light) is the • Independent variable

  18. The item being tested (type of plant, type of algae) should be held • constant

  19. A good experiment should have a _______ group • control

  20. The result of the experiment is the • Dependent variable (height of plant growth)

  21. A student wants to view cells under the compound microscope at a total magnification of 400X. If the eyepiece is 10X, which of the following objective lenses should be used? • 40x

  22. Observation is what you • see

  23. When seeking information go to what type of source? Why? • Professional journal, not newspaper or textbook. Not biased, includes new discoveries

  24. What type of instrument came first in the study of living things? • Microscope (light)

  25. What two scientists collaborated to come up with DNA model? • Watson and Crick

  26. What does collaborate mean? • Work together

  27. T or F: Science requires many people to work together • True

  28. What is the total magnification to view onion cells using 10X ocular lens and 50x. • 500x

  29. Why should you lay a coverslip down at an angle over a slide? • Reduce bubbles

  30. What discovery allowed scientists to view monera and protista kingdom? • Electron microscope

  31. A scientist designed an experiment to test the effect of temperatureon bacterial growth. What was the independent variable in this experiment?The dependent variable? • Temperature. Bacteria growth

  32. What is a hypothesis? • Educated guess

  33. What universal system of measurement do scientists use? • metric

  34. Pasteur’s theory using bacteria growth in closed container was to reject what theory? • Spontaneous generation

  35. At the end of an experiment a student would come up with a • conclusion

  36. If one population is more abundant than another, they may have an _______ over another population • advantage

  37. A control group is the group that ______ receive the treatment • Does not

  38. Why is a control group important? • Allows for a comparison

  39. What layer of a leaf protects it from drying out? • cuticle

  40. What is this? • Cell membrane

  41. What does this do? • Controls movement of substances in and out of the cell

  42. What allows movement of large substances into and out of the cell? • Protein channel

  43. How many cells does a paramecium have? • one

  44. This type of cell has no cell specialized organelles; ribosomes and no membrane-bound nucleus. What is it? • Prokaryote (bacteria)

  45. What is a flagella for? • movement

  46. What makes a copy of DNA to make a protein? • mRNA

  47. What carries coded information out of the nucleus to the ribosome? • mRNA

  48. What characteristics do all living things share? • Have DNA

  49. What is responsible for “rough” appearance of the ER? • ribosomes

  50. What are the three shapes of bacteria? • Rod, sphere, spiral