Praxis Biology: Laboratory Equipment & Measurements Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which part of the microscope do you look through to see a magnified image?

Question 2 2. How does an object's volume relate to the amount of water displaced?

Question 3 3. If you are looking through an eyepiece with 10x magnification, and the objective lens you're using is 40x magnification, what is the total magnification of the image?

Question 4 4. What does it mean to say an analyte has a distribution ratio in a chromatographic system?

Question 5 5. How is volume related to density?

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Question 6 6. Which way does a convex meniscus curve?

Question 7 7. Which of the following statements is NOT true about chromatography?

Question 8 8. If a parking meter reads 20, what does this mean?

Question 9 9. Why do we use displacement to measure the volume of an irregular object?

Question 10 10. Why is it important to pick up slides from the sides?

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Question 11 11. Which type of slides are the easiest to prepare?

Question 12 12. Which part of the microscope would you use to make small adjustments to the magnified image?

Question 13 13. What is the correct level at which to read a meniscus?

Question 14 14. About how much does this person weigh?

Question 15 15. Why does a concave meniscus form the way it does?

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Question 16 16. How would you weigh a box that you are going to ship to your friend in Texas?

Question 17 17. Which two methods are used to help attach the stain to the cell structures?

Question 18 18. What was Archimedes' discovery?

Question 19 19. Who invented chromatography?

Question 20 20. At what line would you read this meniscus?

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Question 21 21. Why does a meniscus occur at the surface of a liquid?

Question 22 22. Which parts do you use to carry the microscope?

Question 23 23. Why is the compound microscope named as such?

Question 24 24. Which of the following is one advantage of putting liquid on a specimen, as used in wet mount slides?

Question 25 25. What did Archimedes use to determine that the crown was not really made of gold?

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Question 26 26. About how fast is this car going?

Question 27 27. Which of the following techniques would be most appropriate for separating large, temperature-sensitive molecules like proteins?

Question 28 28. About how much fuel is left in this car?

Question 29 29. What is the best reason why a flame ionization detector (FID) would not be useful for preparative chromatography?

Question 30 30. What must be added to a prepared mount slide to permanently preserve and adhere the specimen to the slide and cover slip?

Praxis Biology: Laboratory Equipment & Measurements Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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