Unit 1 Test – Biology

  1. Vocabulary Terms

AdaptationHypothesisEcologySexualDevelopment

ControlMulticellularStimulusAsexual

MetabolismIndependentUnicellularDependent

  1. The factor a scientist changes in each group is the ______variable
  2. An educated prediction is called a(n) ______.
  3. The group in an experiment which either lacks the variable or is under normal conditions is called the ______group.
  4. The study of living things and their environment is called ______(a branch of biology).
  5. A one-celled (single celled) organism is called a(n) ______organism.
  6. A condition or event that causes an organism to react is a ______.
  7. An inherited structure, behavior, or internal process that enables organisms to better survive in their environment is a(n) ______.
  8. A change that takes place in structure and function of an organism during its life cycle is ______.
  1. Concepts and Application
  1. Which step of the scientific method is used to develop a hypothesis?
  2. Background/researchc. Procedures
  3. Resultsd. Intuitions/Feelings
  4. In the experiment “The effect of caffeine on the blood pressure of a mouse,” the independent variable is…
  5. The group of mice given no caffeine
  6. The group of mice given caffeine
  7. The caffeine
  8. The blood pressure
  9. In the experiment “The effect of caffeine on the blood pressure of a mouse dependent variable is…
  10. The group of mice given no caffeine
  11. The group of mice given caffeine
  12. The caffeine
  13. The blood pressure
  14. Which of the following is the best example of a scientific observation?
  15. There are many bacterial colonies in section 4
  16. The bacterial colony in section 4 is 2 mm wide
  17. The growth of the petri plate is disgusting
  18. There is some stuff in the thing
  1. Sam separated 60 birds into 3 groups that received different types of nest-building materials. One group received twigs (sticks), one group feathers, and one group dried grass. The birds normally used twigs to build their nests. He recorded the height of the nests each group of birds built. Which of the following is the control group?
  2. The group that received twigs
  3. The group that received feathers
  4. The group that received dried grass
  5. The kind of material the group received
  6. Use the graph below to answer the question:

What is the chemical compound found in the highest concentration in saliva according to the graph?

  1. Na+b. Cl-c. K+d. HCO3

The graph below shows the effect of pH (how acidic something is) on the activity of 2 enzymes (chemicals that speed up reactions). Answer 15 and 16 based on the graph.

  1. At a pH of 8, which enzyme had a higher activity?
  2. Cholinesterase (solid line)
  3. Trypsin (dotted line)
  4. What is true of the activity of trypsin (dotted line)?
  5. The activity did not change in different pH levels
  6. The activity increased as pH increased
  7. The activity decreased as pH decreased
  8. The activity increased and then decreased as pH increased
  1. For each example below, determine which characteristic of life is the best fit:
  1. An acorn becomes an oak tree.
  2. Synthesisb. Reproductionc. Nutritiond. Growth and development
  1. Food passes through your digestive system because muscles contract and squeeze it through.
  2. Synthesisb. Reproductionc. Transportd. Growth and development
  3. An entire colony (large circle of many cells) appears two days after a single bacteria cell is placed on agar in a petri plate.
  4. Synthesisb. Reproductionc. Nutritiond. Growth and development
  5. A sharp pain in David’s arm causes him to quickly look down to see what has happened. He sees a dark red mark which is rapidly swelling. The stimulus in this example is:
  6. The sharp pain
  7. The dark red mark
  8. The swelling
  9. David quickly looking down
  10. The reason fire is NOT alive (abiotic) is because:
  11. Fire does not use energy
  12. Fire does not get bigger
  13. Fire does not have cells
  14. Fire does not respond to stimuli
  15. You suggest that the presence of water could accelerate the growth of bread mold. This is a(n):
  16. Conclusion
  17. Hypothesis
  18. Experiment
  19. Analysis
  20. A controlled experiment allows the scientist to isolate and test
  21. A conclusion
  22. A mass of information
  23. Several variables
  24. One variable
  25. Which of the following is NOT a characteristic of all living things?
  26. Growth and development
  27. Transport
  28. Breathing oxygen
  29. Ability to reproduce
  30. Which level of organization includes all other levels?
  31. Organism
  32. Cell
  33. Tissue
  34. Organ

A scientist conducted an experiment to determine the effect of environment on the color of fur of a Himalayan rabbit. The Himalayan rabbit typically has a white coat except for its colder nose, feet, tail, and ears, which are black. The scientist shaved an area of hair on the back of each rabbit, then placed an ice pack over the shaved area on one rabbit (A).

  1. In the figure above, which rabbit is the control?
  2. Rabbit A
  3. Rabbit B
  4. In the figure above, what is the variable in this experiment?
  5. The rabbits
  6. Rabbit A
  7. The ice (temperature)
  8. Rabbit B
  9. Before completing the experiment in the figure above, the scientist made a hypothesis. What is the hypothesis she is testing?
  10. The fur color of the Himalayan rabbit changes color because its hair was shaved.
  11. The fur color of the Himalayan rabbit changes with the temperature.
  12. The Himalayan rabbit can jump higher than any other species of rabbit.
  13. Himalayan rabbits like cold weather.