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QR Challenge: semester review Biology

QuestionAnswer
1. Which type of microscope can produce three-dimensional images of a cell’s surface? scanning electron
2. A tomato plant is a prokaryote or a eukaryote? Eukaryote
3. Which organelle breaks down organelles that are no longer useful? lysosome
4. The diffusion of water across a selectively permeable membrane is called osmosis
5. What is it called when the concentration of dissolved substances in the solution is the same as the concentration of dissolved substances inside the cell? isotonic
6. movement of particles from an area of higher concentration to one of lower concentration diffusion
7. A recipe says to mix 100 g of sugar, a pinch of NaCl, and 1 g vanilla flavoring in 113 g of butter. Which ingredient is the solvent? Butter
8. What are the reactants in the equation for cellular respiration? oxygen and sugar
9. Where does glycolysis take place? cytoplasm
10. What happens after glycolysis if there is no oxygen present? fermentation
11. What are the reactants of photosynthesis? water, carbon dioxide, and sunlight
12. What are the products of photosynthesis? sugar and oxygen
13. What are the products of cellular respiration? ATP, carbon dioxide, and water
14. `Describe the two roles of enzymes. lower activation energy and speed up the rate of the reaction
15. Which macromolecule stores energy for an organism? Lipids
16. In humans and other multicelluar organisms, which substance plays a central role as an energy source? Carbohydrates
17. A substance with a pH of 6 is called acid
18. An organic compound is a compound that contains carbon
19. Which class of macromolecules store and communicate genetic information? nucleic acids
What makes water “sticky”? Polar / hydrogen bonds

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