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55) Explain why most ecologist would agree with the statement “ A forest ecosystem is more stable than a cornfield.”

55) Explain why most ecologist would agree with the statement “ A forest ecosystem is more stable than a cornfield.”. Because a forest has more biodiversity.

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55) Explain why most ecologist would agree with the statement “ A forest ecosystem is more stable than a cornfield.”

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  1. 55) Explain why most ecologist would agree with the statement “ A forest ecosystem is more stable than a cornfield.” • Because a forest has more biodiversity

  2. Structure 2 is the nucleus where DNA is located. DNA’s code is brought to the ribosome structure #1 by mRNA. At the Ribosome mRNA is read and proteins are made. 56) Describe how structure 1 and 2 interact in the process of protein synthesis. 1 2 4 3

  3. The Mitochondria is the power house of the cell it makes the ATP necessary in order for protein synthesis to take place. Structure 3 3

  4. The Cell Membrane controls what goes in and out of the cell. It provides a safe environment for protein synthesis to occur. Structure 4 4

  5. 59) Explain why cell A is a non target cell for the hormone illustrated in the diagram. • Cell A is a non target cell because it receptors are the wrong shape and can not interact with the hormone.

  6. 61) Describe the action represented by the arrow labeled X in the diagram and state one reason that this action is important. • Action: Shows control of the anterior pituitary • Importance: The pituitary controls the thyroid.

  7. 62) Identify one hormone involved in another biological relationship and an organ that is directly affected by the hormone you identified? • Adrenal is released by the adrenal glands which will affect how fast the heart beats.

  8. 63) Plants respond to their environment in many different ways. Design a controlled experiment to test the effect of one environmental factor, on some aspect of plant growth. • In your experiment be sure to • State a hypothesis • List the steps of the procedure • Identify the control setup for the experiment • Include data table • Identify the independent variable

  9. Hypothesis • Educated guess • Must contain if, then and because

  10. 63- Hypothesis • If I give a plant light then it will grow because light will affect the growth of a plant.

  11. Procedure • What steps you take in conducting the experiment.

  12. Procedure • Obtain plants of the same species and height. • Place equal numbers of plants in light and in the dark. Maintain all other growing conditions. Temperature, soil, pot size, amount of water. • Collect growth of each plant in each group and record the results in a data table.

  13. Control • The control setup should be some standard that the experiment can be compared to.

  14. 63- Control • The control setup is the group of plants grown in the dark.

  15. Independent variable • This is the part of the experiment that changed by the experimenter. • Part you control

  16. 63- Independent Variable • Exposure to light

  17. Dependent Variable • The part of an experiment that changes as a result of the independent variable. • Part you can measure • Amount of plant growth

  18. 64) Compare asexual reproduction to sexual reproduction. In your comparison be sure to include: • Which type of reproduction results in offspring that are usually genetically identical to the previous generation and explain why this occurs • Asexual reproduction results in offspring that are usually genetically identical to the previous generation because offspring receive all their genetic information from one parent. • One other way these methods of reproduction differ. • In sexual reproduction cell divide by meiosis and asexual reproduction divides by mitosis.

  19. 65) • One likely change in the population of each of two different species other than the zebra mussels found in the Hudson • Phytoplankton population will likely decrease • Freshwater clam population will likely decrease • Any organism that eats the phytoplankton pop or clam pop will likely decrease.

  20. 65 • Identify one gas in the ecosystem and state how a change in its concentration due to the effects of the mussels would affect organisms other than the zebra mussels • The oxygen concentration will likely decrease, resulting in a decrease in fish or clam populations.

  21. 65 • State how the death of may of the native organisms could affect the rate of decay and how this would affect the amount of material being recycled • The rate of decay would increase • The amount of material being recycled would increase.

  22. 65 • Explain why the size of the zebra mussel population would decrease after an initial increase • The zebra mussel population would increase for a time then decrease because of the lack of food or oxygen

  23. 66 • Biodiversity would decrease when plants are removed and habitats destroyed • Some producers could increase in number because more light becomes available along the side of the road. • Herbivores would increase in number as a direct result of an increase in producer population. • One possible action the road builders could take is to provide pathways for animals to cross the road • Limit the size of the road.

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