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Chloroplasts

Chloroplasts are a part of a plant's cell. They capture energy from light.

1,379 Questions

What evidence indicates that mitochondria and chloroplasts were once free-living organisms?

Both have their own DNA, and manufacture their own RNA and proteins. When the DNA was examined, it was resembled the DNA in free-living organsims known as blue-green algae, so it was hypothesized that these organelles were once free-living and then became endosymbionts with another organism.

Do all plant cells have chloroplasts?

No, for example, onion plant cells don't. Even in green plants, chloroplasts are not in each cell, only in ones that receive sunlight.

The presence of chloroplasts (green color) in the cells of a plant are an indicator of whether or not those cells are photosynthetic. Almost all terestrial plants are photosynthetic, but that does not mean that all of a single plant's cells are photosynthetic as described above. Photosynthetic cells are specialized to make sugar for the plant's energy needs from atmospheric carbon dioxide. The cells in other parts of the plant have other specialized functions.

What contains chlorophyll and is a green pigment that traps energy from sunlight and gives plants their green color?

Chlorophyll is contained in chloroplasts, which are specialized organelles found in plant cells. This green pigment is essential for photosynthesis, the process by which plants convert sunlight into energy.

What model is used to explain the origin of mitochondria and chloroplasts within eukaryotic cells?

I believe you are referring to the Endosymbiotic theoryby Lynn Margulis. She came up with the theory that states that eukaryotic cells engulfed smaller bacteria and over time, they became specialized organelles within eukaryotic cells.

What function do the chloroplasts serve?

Chloroplasts are responsible for photosynthesis, where they capture sunlight and convert it into chemical energy stored in the form of glucose. This process sustains plant life by producing oxygen as a byproduct and providing energy for growth and metabolism.

What does the chloroplast do for the cell?

Chloroplasts are organelles in plant cells responsible for photosynthesis, the process of converting light energy into chemical energy in the form of glucose. Chloroplasts contain chlorophyll, a pigment that captures sunlight and converts it into chemical energy for the plant to use as food.

What is the name of the most important chloroplast pigment?

The most important chloroplast pigment is chlorophyll. It is responsible for capturing light energy during photosynthesis and is essential for the plant's ability to convert light energy into chemical energy.

A reaction is taking place in a beaker and the outside of the beaker goes very cold What kind of reaction is taking place?

The reaction is likely an endothermic reaction. In an endothermic reaction, heat is absorbed from the surroundings, causing a decrease in temperature.

This stack of thylakoids catches the light?

Yes, thylakoids are membrane-bound structures in chloroplasts where the light-dependent reactions of photosynthesis occur. They contain chlorophyll pigments that absorb light energy, which is then used to drive the synthesis of ATP and NADPH. The arrangement of thylakoids in stacks called grana helps to maximize light absorption and efficiency in photosynthesis.

The primary light-gathering pigment in photosynthetic bacteria and plants is what?

Chlorophyll is the primary pigment in plants. It gives the green color to plants. Its main function is to help in the synthesis of carbohydrates from carbon-di-oxide by the process of photosynthesis.

In a chloroplast the stacks of membranous sacs are called?

In a chloroplast, the stacks of membranous sacs are called thylakoid membranes. Grana is the term used to refer to the stacks of thylakoids. It is in this internal part of the chloroplast where photosynthesis occurs.

What do chloroplasts make?

Chloroplasts make glucose through the process of photosynthesis using light energy, water, and carbon dioxide. This glucose is a form of energy that plants use for growth and other metabolic processes.

Why do cells of plant roots lack chloroplasts?

Chloroplasts hold the nutrients and all that the roots do are suck it up and its stored in the chloroplasts. So chloroplast just hold in the nutrients while the roots suck up the nutrients from the soil so why would there be chloroplasts in a part of the plant that just sucks it up.

Difference between mitochondria and chloroplast?

Mitochondria is an organelle of the cell where as the chloroplast is a kind of plastids.... mitochondria is found in plants and animals both where as chloroplasts are found only in plants... Mitochondria is the power house of cell where cellular respiration takes place and chloroplast is a green pigment especially in leaves that helps it for photosynthesis called chlorophyll. hope its helpful!! ^_^

Nonliving material that makes up the cell walls of plant cells?

The answer is cellulose. Cellulose is a long-chain polymeric polysaccharide carbohydrate, of beta-glucose . It forms the primary structural component of green plants. The primary cell wall of green plants is made primarily of cellulose; the secondary wall contains cellulose with variable amounts of lignin. Lignin and cellulose, considered together, are termed lignocellulose, which (as wood) is argued to be one of the most common biopolymers on Earth (chrysolaminarin is often argued to be the other). Only one group of animals, the tunicates, has the ability to create and use cellulose. Some acetic acid bacteria are also known to synthesize cellulose

What makes chloroplasts green?

Chloroplasts contain a green pigment called chlorophyll. This is what makes plants green

Because they contain the chemical chlorophyll which has a green pigment (pigment = a substance which produces a characteristic colour as a result of the colour (of light) being reflected because of its wavelength - see EM spectrum).
sunlight

What do plants use nitrogen for?

Plants use nitrogen to build important molecules like proteins, nucleic acids, and chlorophyll. Nitrogen is a crucial element for plant growth and development, helping them to thrive and produce fruits and seeds.

Where are the chloroplasts located?

Nope. Chloroplasts are organelles found in plant cells (not the roots obviously) that carry out photosynthesis and create the energy the plant needs in order to survive. Chloroplasts do, however, co-exist with the plant cell's nucleus within the cytosol of the cell. Just remember, a chloroplast is an organelle and a nucleus is an organelle; they are separate.

Describe how solar energy helps plants?

Solar energy is essential for plants as they use it in a process called photosynthesis to convert sunlight into chemical energy. Through photosynthesis, plants can produce glucose, which serves as their main source of food for growth and development. In addition, solar energy helps regulate various plant physiological processes such as flowering, fruiting, and water uptake.

Which layer of leaf has the most chloroplast and why?

The palisade layer of the leaf typically has the highest concentration of chloroplasts. This layer is located near the upper surface of the leaf where it receives the most sunlight for photosynthesis. The abundance of chloroplasts in the palisade layer maximizes the leaf's ability to capture and convert light energy into chemical energy.

How does the structure of a motochondria relate to its function?

The structure of a mitochondria, with inner and outer membranes and folded cristae, allows for compartmentalization of processes like the electron transport chain and ATP synthesis. This structure increases the surface area available for these processes, enhancing the efficiency of cellular respiration and ATP production.

Chloroplasts cannot make glucose at night Why Not?

Chloroplasts require sunlight to perform photosynthesis and produce glucose. Without light, the chloroplasts cannot convert carbon dioxide and water into glucose. Therefore, at night when there is no sunlight, chloroplasts are unable to make glucose.

What are the characteristic properties of metals?

Metals typically have high electrical and thermal conductivity, malleability, ductility, and shiny luster. They tend to be solid at room temperature (except for mercury), are typically good at forming alloys, and can exhibit metallic bonding.

Analogy for the chloroplasts?

An analogy would be solar panels. Solar panels absorb the light and convert it into usable energy. So do chloroplasts. They convert it into chemical energy.

How do plants use air?

Plants use air through a process called photosynthesis, where they take in carbon dioxide from the air and convert it into energy with the help of sunlight. This process also releases oxygen back into the atmosphere as a byproduct, which is essential for supporting life on Earth. Additionally, plants use air to regulate water loss through small openings called stomata on their leaves.