0
Chloroplasts
Chloroplasts are a part of a plant's cell. They capture energy from light.
1,379 Questions
Why does root hair does not contain chloroplasts?
Chloroplasts need sunlight for function. Root hairs do not get sun light
In what part of a chloroplast to dark reactions occur?
Dark reactions take place in the stroma of the plant cell.
Why don't humans need chloroplasts?
Humans are heterotrophic and feed from other organisms. They do not carry out photosynthesis, which is the function of chloroplasts. Plants need chloroplasts as they are autotrophic (i.e. they produce their own food using sunlight).
How do the reactants of photosynthesis reach the chloroplasts in the leave?
Carbon dioxide enters through small openings called stomata on the leaf surface, while water is absorbed by the roots and transported to the leaves through vascular tissue. Both carbon dioxide and water then diffuse into the chloroplasts in the leaf cells where photosynthesis occurs.
What is the function of the pigments located in chloroplasts?
the function of chlorophyll pigments is trapping the sun's energy and using it for nutrients. this production is called photosynthesis. it also gives the plant the green colour that it carries when photosynthesis is in progress. usually you can start to see this production in spring when the sun comes out more often.
What process does the word equation below represent?
The Answers community requested more information for this question. Please edit your question to include more context. You haven't given any equation.
List two ways in which chloroplast are adapted for photosynthesis to take place?
Chloroplasts are disc-shaped to provide a large surface area to absorb light. They are also located close to the surface of the leaf to capture maximum light, located near to veins for easy water diffusion and are small in size to enable them be packed in a small space.
What are the arrangement of the chloroplasts in spirogyra?
Spirogyra is a type of green algae, named for the spiral arrangement of the chloroplasts. The arrangement of the chloroplasts are helical or spiral.
How do mitochondria and chloroplasts become part of modern eukaryotic cells?
Because of the 69 inside of the cell lol
Where are chlorplasts in a leaf?
Chloroplasts are found in the cells of young stems and immature fruits, leaves are the real photosynthetic factories of the plant.
Why do root hair cells not have chloroplasts?
They don't have have chloroplasts because they are underground in the dark and cannot photosythsize
What colors of light are primarily not absorbed by chlorophyll?
Plants use the red and blue light from the visible light spectrum; these are captured in the wavelengths between 440 and 660 nanometres. Green light is reflected, giving plants their green colour. Day length also plays an important factor in the effectiveness of photosynthesis.
Since red is the most abundant colour in visible light, then it could be referred to as the "most useful" since it is the one used most.
Bear in mind that photosynthesis is not the only process involving plants and light, since insect pollinated flowering plants (angiosperms) use bright colours to attract insects and other animals, in which case, light is required in many forms, not only visible, but some ultraviolet, since several insects see by means of ultraviolet light.
What part of cells holds chlorophyll?
Chlorophyll is found within organelles within the cell called chloroplasts.
What is a carbon dioxide used for in the chloroplasts of green plants?
It is used as carbon source. It is used to make glucose
Why all plant don't have chloroplasts?
Only cells which can get sunlight have chloroplasts. There is no purpose for others having it
What will happen if chloroplast is taken out of the cell and illuminated?
If chloroplast is taken out of the cell and illuminated then there will be no chlorophyll. Plants cannot make their own food .There will be no food for humans also.
What aré the products of chloroplast?
Chloroplasts are organelles found in plant cells and other eukaryotic organisms that conduct photosynthesis. Chloroplasts capture light energy to conserve free energy in the form of ATP and reduce NADP to NADPH through a complex set of processes called photosynthesis. ATP and NADPH energy is then used to produce sugar (glucose).
The basic equation of photosynthesis is:
6 H20 + 6 C02 + light >>> C6H12O6 + 6 O2
2 sets of reactions in photosynthesis are called light reactions and the Calvin Cycle.
The light reactions occur in the thylakoid membranes (granum) of the chloroplast. THe inputs are light and water and the outputs are ATP and NADPH needed to power the Calvin Cycle (previously known as dark reactions). In the light reaction water is split into oxygen and protons (hydrogen ions). Light powers the movement of the freed electron through an electron transport chain involving proteins embedded in the membrane. This includes the Photosystem II and Photosystem I complexes with pigments (such as chlorophyll) contained within the protein complex. NADPH is made from NADP and H+ at PSI. The proton byproduct of splitting water is pumped through another protein complex involving the enzyme ATP Synthase to produce ATP from ADP and Pi.
The Calvin Cycle occurs in the stroma of the chloroplast. Carbon dioxide, NADPH and ATP are the inputs and Sugar, NADP, ADP and Pi are outputs. ATP and NADPH provide the energy to drive a process of carbon fixation where the carbon in CO2 is combined with carbon from RuBP (5C molecule) and then via Rubisco enzymes processed into 3C molecules that are assembled into a 6C molecule (glucose).
THe glucose is used for the plant's own needs (cellular respiration) or processed into structural components such as cellulose for cell walls. Excess is stored as starch.
What do chloroplasts in a cell look like?
A chloroplast is a green cell, which gives the plant its green color. The cell wall surrounds an individual plant cell and is made up of fiber, and gives the plant its rigidity.
In what ways are mitochondria and chloroplast similar to some prokaryotic cells?
Prokaryotes are similar to green plants because, like plants, prokaryotes perform basic life functions, including reproduction, digestion, and respiration. As far as differences, prokaryotes have one cell, while green plants are multicellular. Plants are also eukaryotes—they have a nucleus.
Are chromosomes found in chloroplast?
DNA is in every part of the body... Not really true
It helps to look at it from two levels
Extracellular
Our body is made up of cells. Mitochondria is in all cells and is the energy system that keeps our cells running. DNA is also in all of our cells and offers the instructions for how our cells should grow based on our gene code and also the outside environment.
Intracellular.
Within our cells we have various structures. Mtiochondria (energy) Golgi apparatus (protein synthesis[muscle production]) cell nucleas (Director). DNA, contained within the cell nucleas, is the director. Mitochinria, although within every cell is in a separate intracellular structure to DNA. It's like it's a different department in the same company. So DNA isn't actually in mitochondria. It does however communicate to Mitochondria through messengers called mRNA or messenger RNA.
What is the importance of chloroplast to the cell?
Chloroplasts are important organelles in plant cells as they are responsible for photosynthesis, the process by which light energy is converted into chemical energy in the form of glucose. This energy is vital for the cell's metabolic processes and ultimately sustains life on Earth. Additionally, chloroplasts contain chlorophyll, a pigment that gives plants their green color and is essential for absorbing light energy.
