Lesson 2
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
What is the process through which light energy is converted into chemical energy in plants?
Photosynthesis Photosynthesis involves the production of glucose and oxygen from sunlight, water, and carbon dioxide.
What are the two major modes of nutrition organisms use to acquire energy?
• Heterotrophic nutrition • Autotrophic nutrition
What are heterotrophs?
Organisms unable to make their own food, living on compounds produced by other organisms
What are autotrophs?
Self-feeding organisms that can produce their own food without relying on other organisms
What are photoautotrophs?
Autotrophs that use light as a source of energy to synthesize organic substances
Where in plant cells does photosynthesis primarily occur?
In chloroplasts
What is the function of chloroplasts?
To trap light energy and convert it into chemical energy
What pigment is responsible for absorbing light in chloroplasts?
Chlorophyll
What are thylakoids?
Disc-shaped interconnected membranous sacs within chloroplasts
What is the stroma in chloroplasts?
The thick fluid that holds thylakoids and is involved in the synthesis of organic molecules
What are the two stages of photosynthesis?
• Light-dependent reactions • Calvin cycle
What occurs during light-dependent reactions?
Conversion of solar energy to chemical energy
What initiates the light-dependent reactions?
Absorption of photons by pigments in photosystems
What is chemiosmosis?
The process where hydrogen ions move through ATP synthase from higher to lower concentration
What are the two main energy carriers produced during light-dependent reactions?
• ATP • NADPH
What is the function of RuBisCO in the Calvin cycle?
To catalyze the reaction between CO2 and RuBP
What is the primary output of the Calvin cycle?
Glucose or other carbohydrate molecules
Fill in the blank: The Calvin cycle reactions can be organized into three basic stages: fixation, reduction, and _______.
Regeneration
Who first identified the Calvin cycle?
Dr. Melvin Calvin
What is the chemical formula for glucose?
C6H12O6
True or False: The Calvin cycle requires ATP and NADPH produced from light-dependent reactions.
True
What is ferredoxin?
A protein that mediates electron transfer in chloroplasts
What is plastocyanin?
A mobile electron carrier in the lumen of the thylakoid
What role does the cytochrome b6f complex play in photosynthesis?
It connects photosystem I and II and generates a proton gradient for ATP synthesis