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BIO 113 Test – Question and Answers

1. Why do some scientists consider our piloerector muscles to be vestigial organs?
2. Which of the following substances is a compound?
3. Most of the cell membrane is made of which lipid?
4. Red blood cells that settle out of your blood when left to stand would be considered:
5. An example of sonography would be:
6. Which of the following would be a use of histology in medicine?
7. Explain two things you should consider when designing a scientific experiment to make sure the results are
8. What is the atomic mass of an element that has 10 protons, 10 neutrons and 10 electrons?
9. Lactose is a __________ that is made of glucose and
10. Which of the following shows the organization of a living thing from largest to smallest?
11. The three-dimensional conformation of a protein is held together by:
12. Give at least three characteristics of all living things and an example of each in the human
13. Water molecules being attracted to and sticking to other water molecules is:
14. Dehydration synthesis is a reaction that involves the making of a more complex compound ..
15. A solution has a pH of 2. The solution would be considered…
16. Cells in your skin that can detect a change in temperature would be:
17. What are the three parts of a feedback loop?
18. The loss of an electron is __________ and the gain of electron is __________.
19. A covalent bond in which electrons are not shared equally is called:
20. Hydrolysis is a reaction that involves:
21. Triglycerides are made up of one __________ molecule and three __________ chains.
22. The study of the structure and function of cells is called:
23. A substance that helps to mix typically insoluble molecules into water, like bile salts helping fats mix with stomach juice would be:
24. Which molecule is a plant structural polysaccharide that we use as dietary fiber?
25. Which of the following is most likely to lead to dangerous or even fatal conditions?
26. Salts are always formed by what type of bonds?
27. Proteins that are mixed in with our blood plasma making it slightly cloudy are an example of:
28. Many plant triglycerides are liquid at room temperature because they contain:
29. The nucleotide that often acts as second messenger in our cells is:
30. What percent of the living cell is made up of water?
31. Enzymes speed up reactions by:
32. Most lipids are
33. A solution with a pH of 8 is how many times more basic than one with a pH of 6?
34. This shows the element phosphorous on the periodic Which of the following describes an isotope of phosphorous?
35. Name three characteristics of water that make it so important to all living Give an example of how that characteristic is used in the body successfully.
36. A buffer…
37. The pH of blood:
38. What is situs inversus?
39. Negatively charged particles that circle the nucleus of an atom are ..
40. Nitrogen has an atomic number of 7 and an atomic mass of 01. Which of the following is true:
41. The “good” cholesterol that helps to sweep away the bad cholesterol from our blood vessels is called:
42. Quaternary structure of a protein would be:
43. Match the term with its best definition
44. How many valence electrons does sodium have?
45. Which of the following would be a use of auscultation in medicine?
46. Glucose is a monomer of which of the following polysaccharides?
47. Which of the following pH measurements are from lesser to greater acidity?
48. Answer the following questions.
49. The atomic mass of an atom depends primarily on the number of:
50. Carbon is an essential part of living things because it favors covalent How many bonds can one carbon atom make?
51. The ability of the body to maintain a constant internal environment is called:
52. A substance that can dissolve in water would be a:
53. An example of positive feedback in the body would be:
54. Explain positive and negative feedback Give pros and cons as well as an example of each in the human body.
55. A solution has a pH of 0. The solution is considered a (n)…
56. Sugars and salts tend to be:
57. Elements are electrically neutral (no net charge), which means the number of __________ must equal the number of __________.
58. An example of a conformation change in a protein would be:
59. Which of the following bonds in the weakest?
60. Cholesterol is the basis of steroids in the body like:
61. The full name of ATP is:
62. Water will ..
63. The copy of DNA that we make in order to synthesize proteins in the body is:
64. A solution with a pH of 4 has:
65. Which bonds allow electrons to be shared equally between atoms?
66. The building blocks of proteins are
67. The breaking down of more complex substances into smaller ones is known as:
68. Which of the following is an important buffer in the human body?