Unit C exam
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 (19 张)
What color of visible light do plants absorb ? What color of visible lights do plants reflect?
Plants absorb blue (400-500nm) and red (600-700nm) They reflect green light 500-550NM
What are photons?
Photons are light particles
Label the following parts of the chloroplast
Thylakoid, grana, inner membrane, outer membrane, stroma
What part of the plant are most chloroplasts found in?
Leaf Mesophyll (the internal cell layers of a leaf)
What pigment absorbs light energy in plants?
Chlorophyll, the primary pigment used in photosynthesis
What is the only pigment (be specific) found in plants that can transfer energy from sunlight to the reactions of photosynthesis?
Chlorophyll A
What is the only pigment (be specific) found in plants that can transfer energy from sunlight to the reactions of photosynthesis?
Chlorophyll A
What are the accessory pigment in plants? And what’s their purpose
Chlorophyll B absorbs mostly blue and yellow light and reflects yellow-green pigments. Carotenoids absorb light in the blue-green ranges and reflect the yellow, red and orange ranges
The main function of a chloroplast is to convert light energy into ______ energy in the form of sugar or other carbohydrates
Chemical Energy
Chloroplast are filled with a gel like substance called the _____, and layers of flattened membranes called _____
Stroma and Thylakoids
These chloroplast membranes contain all of the pigments involved in the chemical reactions of photosynthesis which involve the _____ of light
Absorption
What does a stack of discs or thylakoid membranes make?
Grana
A molecule that absorbs light is called a ______. Each kind of pigment absorbs lights of different wavelengths and reflects specific wave lengths, thus each pigment appears as a different ____. Chlorophyll absorbs light in the violet, blue and _____ wavelengths, but since it reflects green wavelengths it appears _____ to the human eye
Pigment, color, red, green
The pigment most directly used in photosynthesis is the _________. Frequently plants also have accessory pigments present such as the _________, and the red, orange and yellow pigments known as the _____. The value of the accessory pigments is that htheh extend the range of usable lights
Grass green chlorophyll A, yellow- green chlorophyll b, carotenoids/beta-carotene
Scattered throughout the thylakoid membranes are millions of photosynthetic Units which capture energy from the ______ in the light reaction process. These photosynthetic units are arranged into special bundles or areas called _____
Sunlight, photosystems
Absorption of photon energy causes chlorophyll A to lose an ______ to an electron acceptor. however, if chlorophyll A is to continue to absorb photon energy, it must replace the electron it lost. these replacement electrons from from the splitting of _____ inside the thylakoid membrane
Electron, water
In a process called _____, a water molecule is split, yielding into two _____; two electrons and a half an oxygen atom, which quickly combines with another oxygen to form a molecule of oxygen gas. The oxygen formed by photolysis is the oxygen that plants release into the ______
Photolysis, Hydrogens, Atmosphere
So in the light reaction, electrons are transported from water to different electron acceptors found in the ________ chain. This process is a chain like series of ______ (lose electrons) and _____reduction (gain electrons ) reactions
Electron transport, oxidation, reduction
Why is photosynthesis considered an energy storing reaction?
It’s considered an energy- storing reaction because it converts sunlight into chemical energy stored in glucose(sugar). this stored energy can be used by plants for growth and by other organisms as food.