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Biology Midterm I.docx

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BIOL 1010
Igor Kovalchuk

Biology Midterm I 1. List the functional groups of organic molecule that have acidic properties a. Phosphate, Carboxyl 2. Which group of large biological molecules is not synthesized via dehydration reactions? a. Lipids 3. Collenchyma cells are alive at maturity, have thick walls, and lack secondary walls a. True. 4. Plasma membrane is: a. Produced by the rough ER 5. Bacteria have proteins on the surface that recognize ad take in DNA from closely related species. How do you call this process? a. Transformation 6. Depending on the location of the carbonyl group, sugars may be a. Aldoses, ketoses 7. Microtubules consists of fibrous proteins supercoiled into thicker cables a. False 8. Which cellular structure is common to all 3 domains of life? a. Phospholipid bilayer cell membrane 9. What is the lowest level of biological organization that can perform all the activities required for life? a. Cell- for example, a skin cell 10. In humans, blood pH is around 7.4, and a decrease in blood pH to 6.4 would be fatal. A drop by 1 pH level represents which of these? a. Ten times as many H+ ions in the solution 11. List three fiber types of connective tissue. a. Collagenous, elastic, reticular. 12.The type of muscle tissue that composes internal organs, except the heart, is referred to as a. Smooth 13.The cells of the multicellular organism are microscopic because a. The ratio of surface to volume is ideal for proper functioning 14.Gap junctions help cells to exchange nutrients are signaling molecules a. True. 15.Brefeldin A is a dug that disrupts transport from the ER to the Golgi apparatus. With other organelles and membranes are affected? a. Lysosomes, vacuoles, plasma membranes 16. Which of the following pairs is mismatched? a. Lysosome; protein synthesis 17.Enzymes responsible for biosynthesis of membrane lipids would be located in what part of the cell? a. Endoplasmic reticulum 18. According to the length of their carbon skeletons carbohydrates are classified as a. Triose, pentose, hexose 19.Which of the following statements is correct about gram-negative bacteria a. They often possess an outer c
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