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Home Question Bank Biology Archive 2025 January 17

Biology Questions from Jan 17,2025

Browse the Biology Q&A Archive for Jan 17,2025, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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¿cuál de los siguientes términos significa reducir el numero de microorganismos en una superficie aplicando calor o productos quimicos? Pubverzacion Desinfeccion Procesamiento Limpiete 23. Accessory pigruents differ from chlorophyll a in that they a. absorb all wavelengths of light. b. absorb only yellow and orange light. c. are not directly involved in the light reactions of photosynthests d. have no function in photosymthesis. 20. Which of the following environmental factors will cause a rapid decline in the photosynthesis rate if the factor rises above a certain level? a. light intensity b. temperature c. carbon dioxide d. oxygen 19. To produce the same amount of carbohydrate, \( \mathrm{C}_{4} \) plants lose less a. ATP than \( \mathrm{C}_{3} \) plants. b. carbon dioxide than \( \mathrm{C}_{3} \) plants. c. water than \( \mathrm{C}_{3} \) plants. d. RuBP than \( \mathrm{C}_{3} \) plants. 18. Carbon atoms are fixed into organic compounds in a. the Calvin cycle. b. the light reactions. c. electron transport chains. d. photosystems I and II. 17. At the end of the photosystem 1 transport chain, electrons a. combine with \( \mathrm{NADP}^{+} \)to form NADPH. b. combine with ADP to form ATP. c. are ejected out of the membrane, into the stroma. d. enter photosystem II. 16. Protons are moved into the thylakoid using energy from a. ATP b. NADPH. c. electrons in the transport chain. d. the sun's heat. 15. Where does the energy required for the Calvin cycle origimate? a. ATP and NADPH produced by the light reactions b. \( O_{2} \) produced by the light reactions c. the sun's heat d. chlorophyll in the leaf cells In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. \( \qquad \) 14. What product of the light reactions of photosynthesis is released and does not participate further in photosynthesis? a. ATP b. NADPH c. \( \mathrm{H}_{2} \mathrm{O} \) d. \( \mathrm{O}_{2} \) Complete each statement by writing the correct term or phrase in the space provided. 9. The \( \qquad \) \n\( \qquad \) is the most common pathway of carbon dioxide fixation. 10. Plants use three carbon molecules produced during stage 2 of \( \qquad \) to make organic compounds. 11. Light-absorbing \( \qquad \) are located in the membranes of \( \qquad \). 12. High-energy electrons move along the thylakoid membrane from photosystem \( \qquad \) to photosystem \( \qquad \). 13. The oxygen produced in photosynthesis comes from \( \qquad \).
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