KEY Exam 1 for BYS 215 FA23 Lecture Exam 1

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J.F. Drake State Community and Technical College *

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Biology

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Feb 20, 2024

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BYS 215 Lecture Exam 1 Name: ____________________ Dr. Adcock – Chapters 1, 2 & 3 plus Introductory Powerpoint Information (50 questions/ 0.4 pts each) Introductory Information & Chapter 1: 1. Each time that dissection of a specimen is utilized as a "learning" technique in A&P, we are actually making use of a technique developed around 1543 by _____. A. Andreas Vesalius B. Nostradamus C. Hippocrates D. Walter B. Cannon 2. The “concept” of homeostasis has been around for hundreds of years but is really attributed to _____. A. Andreas Vesalius B. Nostradamus C. Hippocrates D. Walter B. Cannon 3. There are two major mechanisms/divisions that regulate human physiology- intrinsic and extrinsic. Extrinsic control is provided via: A. automatic response in a cell, tissue, or organ to some environmental change B. responses controlled by the nervous and endocrine systems C. allopathic response D. cellular and molecular response 4. We now appreciate how complex the interactions are between stress factors and overall health. The term employed to account for ALL factors that may affect human physiology is: A. homeopathy B. allostasis C. symbiosis D. homeostasis

5. In maintaining homeostasis, _____ feedback would be used by the body to maintain changes in blood pressure as in returning the pressure to a normal 120/75 mm Hg. A. Negative feedback B. Positive feedback C. Allostasis D. Homeopathy 6. The study of large body structures, visible to the naked eye, such as the heart is called ________ anatomy. A. microscopic B. gross C. developmental D. systemic Chapters 2 & 3 Information 7. What are the four major elements found in the chemicals that comprise the human body? A. nitrogen, oxygen, calcium, sodium B. hydrogen, carbon, phosphorus, calcium C. carbon, hydrogen, oxygen and nitrogen D. oxygen, nitrogen, potassium, calcium E. potassium, phosphorus, sodium, hydrogen 8. Which of the following elements is necessary for proper conduction of nervous impulses along with K+? A. Fe B. I C. P D. Na 9. Because the human body is largely made of proteins, our homeostasis is affected by: A) pH and temperature B) carbon and iron C) nutrient flow and heat D) pressure and water 10. This relatively weak type of bond helps stabilize the three-dimensional structure of large molecules like proteins and DNA/RNA? A. Covalent B. Ionic C. Hydrogen D. Polar covalent E. Hydrostatic

11. The genetic information is coded (written) in DNA by the ________. A) regular alteration of sugar and phosphate molecules B) sequence of the nucleotides C) three-dimensional structure of the double helix D) arrangement of the histones 12. Which of the following is not true of proteins? A) They may be denatured or coagulated by heat or acidity. B) They have both functional and structural roles in the body.. C) They appear to be the molecular carriers of coded hereditary information. D) Their function depends on their three-dimensional shape. 13. The charge across a membrane is typically slightly _____. A) negative B) positive C) neutral D) acidic E) basic 14. Carbohydrates are stored in the liver and muscles in the form of ________. A) glucose B) triglycerides C) glycogen D) cholesterol 15. Which of the following does NOT describe enzymes? A) Some enzymes are purely protein. B) Some enzymes are protein plus a cofactor. C) Each enzyme is chemically specific. D) Enzymes work by raising the energy of activation. 16. What level of protein synthesis is represented by the coiling of the polypeptide backbone into an alpha helix? A) primary structure B) secondary structure C) tertiary structure D) quaternary structure 17. Choose the answer that best describes fibrous proteins. A) rarely exhibit secondary structure B) are very stable and insoluble in water C) are usually called enzymes D) are cellular catalysts

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