What are the two kinds of reaction in photosynthesis?
The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.
What are the 2 types of reactions?
Types of Chemical Reactions: Single- and Double-Displacement Reactions
- Recognize chemical reactions as single-replacement reactions and double-replacement reactions.
- Use the periodic table, an activity series, or solubility rules to predict whether single-replacement reactions or double-replacement reactions will occur.
What are the two sets of reactions for photosynthesis quizlet?
Photosynthesis can be divided into two sets of reactions – the Light Dependent reactions and the Calvin Cycle (also known as the light independent reactions.
What are the photosystems I and II in photosynthesis?
There are two types of photosystems: photosystem I (PSI) and photosystem II (PSII). Both photosystems contain many pigments that help collect light energy, as well as a special pair of chlorophyll molecules found at the core (reaction center) of the photosystem.
What are the two types of photosystems?
Physically, photosystems are found in the thylakoid membranes. There are two kinds of photosystems: photosystem I (PSI) and photosystem II (PSII) (Fig.
How are photosystem I and II similar and different?
How photosystem I and photosystem II similar? How are they different? In photosystem II, energy is absorbed by electrons, creating high-energy electrons which are passed on to the electron transport chain but in photosystem I the electrons are picked up by NADP to form NADPH.
How does photosynthesis I and II happen?
The movement of electrons in Photosystems I and II and the action of an enzyme split the water into oxygen, hydrogen ions, and electrons. These reactions occur in the stroma, the fluid in the chloroplast surrounding the thylakoids, and each step is controlled by a different enzyme.
What Colour of light is best for photosynthesis?
green light
What is produced in photosystem 1?
The light reaction of photosynthesis. High-energy electrons, which are released as photosystem I absorbs light energy, are used to drive the synthesis of nicotine adenine dinucleotide phosphate (NADPH). Photosystem I obtains replacement electrons from the electron transport chain.
Is oxygen produced in photosystem 1?
Hint: In photosystem I, the electron comes from the transport chain of the chloroplast electron. When the electron is removed from the water molecule, the photosystem II separates the water and releases the oxygen gas. This reaction is the source of all the oxygen we breathe.
What is produced in photosystem 2?
Photosystem II is the first membrane protein complex in oxygenic photosynthetic organisms in nature. It produces atmospheric oxygen to catalyze the photo-oxidation of water by using light energy. By obtaining these electrons from water, photosystem II provides the electrons for all of photosynthesis to occur4.
Do plants grow better in red or blue light?
Plants that receive plenty of blue light will have strong, healthy stems and leaves. Red light is responsible for making plants flower and produce fruit. It’s also essential to a plant’s early life for seed germination, root growth, and bulb development.
Why is blue light better than red light for photosynthesis?
BLUE light carries a higher energy signature then RED light does and that higher energy with a shorter wavelength should provide the plants with a better environment for growth. Blue light has a wavelength that is shorter in the visible spectrum as compared to red light and has a higher energy.
What color has the highest rate of photosynthesis?
red light
What color light is best for plant growth?
Different color light helps plants achieve different goals as well. Blue light, for example, helps encourage vegetative leaf growth. Red light, when combined with blue, allows plants to flower. Cool fluorescent light is great for cultivating plant growth indoors.
What is the effect of blue light on photosynthesis?
BLUE LIGHT AND PLANT GROWTH In addition, blue light regulates the opening of stomata, which are the tiny openings on leaves that control both water loss and the uptake of carbon dioxide. Generally, only a low intensity of blue is needed in a light spectrum for fully functional photosynthesis.
Do plants grow under blue light?
The color of light DOES affect plant growth, but the effect is more noticeable under low light intensity. Red & blue light are most effective for plant growth, while yellow & green have minimal effect. UV light can damage plants, causing leaves to burn. Growers often use supplemental light to optimize plant growth.
Why is green the worst color for photosynthesis?
The green light is considered to be the least efficient wavelength for photosynthesis. This is due to the presence of a green pigment known as chlorophyll. The green light is transmitted and reflected instead of absorbed by the chlorophyll.
What wavelengths are absorbed in photosynthesis?
Chlorophyll, the green pigment common to all photosynthetic cells, absorbs all wavelengths of visible light except green, which it reflects. This is why plants appear green to us. Black pigments absorb all wavelengths of visible light that strike them.