How do chloroplasts support the endosymbiotic theory?

Explanation: Bacteria, a prokaryote, has circular DNA, as do mitochondria and chloroplasts. This provides support for the Endosymbiotic Theory, which states that the mitochondria and chloroplast in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote).

What characteristics of chloroplasts support the theory of endosymbiosis?

Mitochondria and chloroplasts cannot grow outside their host cell. Evidence for this is based on the following: Chloroplasts are the same size as prokaryotic cells, divide by binary fission, and, like bacteria, have Fts proteins at their division plane.

What proves the endosymbiotic theory?

Endosymbiotic Theory Evidence. The most convincing evidence supporting endosymbiotic theory has been obtained relatively recently, with the invention of DNA sequencing. DNA sequencing allows us to directly compare two molecules of DNA, and look at their exact sequences of amino acids.

What are 3 pieces of evidence that support the endosymbiotic theory?

The three pieces of evidence of the endosymbiotic theory are that the organelles like mitochondria and chloroplast are self-replicating organelles with their DNA that shares similarities with the prokaryotic genetic material and have double membrane-like prokaryotes.

What evidence best supports the endosymbiotic theory?

Therefore gene expression similar to the bacterial system can be regarded as evidence that supports the endosymbiotic theory of the origin of eukaryotic cells from prokaryotic cells.

What do the chloroplast and mitochondria have that supports endosymbiotic theory?

Explanation: Bacteria, a prokaryote, has circular DNA, as do mitochondria and chloroplasts. This provides support for the Endosymbiotic Theory, which states that the mitochondria and chloroplast in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote).

What trait of chloroplasts supports explanation?

The endosymbiotic theory provides an explanation for the origin of chloroplasts. Which trait of chloroplasts supports this explanation? Chloroplasts have their own DNA.

What evidence supports the theory of endosymbiosis quizlet?

What evidence exists to support the endosymbiotic origins of eukaryotic cells? The endosymbiotic theory is based on mitochondria and chloroplasts of eukaryotes. Both structures have characteristics (such as their own DNA and the ability to self-replicate) of independent prokaryotes.

What is the evidence for the origin of chloroplasts?

Chloroplasts are one of many types of organelles in the plant cell. They are considered to have evolved from endosymbiotic cyanobacteria. Mitochondria are thought to have come from a similar endosymbiosis event, where an aerobic prokaryote was engulfed.

Which of the following is not evidence that supports the endosymbiotic theory?

The exterior structure similar to bacterial cell walls” IS NOT an evidence in favour of the endosymbiotic theory. Both mitochondria and chloroplasts are double membrane bound.

What evidence supports the argument that ancestors of mitochondria and chloroplasts?

The first key evidence that proves chloroplasts and mitochondria were primitive prokaryotes is the presence of a double membrane. When chloroplasts and mitochondria were floating around as prokaryotes, they were engulfed by another prokaryote, hence the double membrane.

Do chloroplasts have ribosomes?

Consistent with their postulated origin from endosymbiotic cyanobacteria, chloroplasts of plants and algae have ribosomes whose component RNAs and proteins are strikingly similar to those of eubacteria.

What evidence supports the theory that mitochondria and chloroplasts arose by endosymbiosis of bacteria select all that apply?

Evidence supporting the endosymbiotic theory includes the similarity in size that bacteria have to mitochondria and chloroplasts. The endosymbiotic theory hypothesizes that mitochondria and chloroplasts were formed when prokaryotic cells were engulfed by larger cells that were precursors to eukaryotic cells.

What is the purpose of chloroplasts in a cell?

In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules, cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves, and vacuoles allow plant cells to change size.

What are the two main functions of chloroplasts?

The main role of chloroplasts is to conduct photosynthesis. They also carry out functions like fatty acid and amino acid synthesis.

How does the chloroplast work?

Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant. Chloroplasts capture light energy from the sun to produce the free energy stored in ATP and NADPH through a process called photosynthesis.

What theory provides an explanation for the development of eukaryotic cells?

The endosymbiotic theory explains how eukaryotic cells evolved. The large and small cells formed a symbiotic relationship in which both cells benefited. Some of the small cells were able to break down the large cell’s wastes for energy.

What cell has chloroplasts cytoplasm DNA and a cell membrane?

A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how the cell could be classified? The cell is eukaryotic because it has chloroplasts.

Which stage is believed to be the first in the origin of cells?

In the first portion of section 22.1, four stages are ordered as follows: Stage 1: Organic molecules, like amino acids and nucleotides, were formed first and the precursors to all life, Stage 2: Simple organic molecules were synthesized into complex molecules such as nucleic acids and proteins, Stage 3: Complex …

What theory is commonly used to explain the origin of chloroplasts based on this theory what type of modern organism shares a common ancestor with chloroplasts?

Chloroplasts are the prominent organelles of green plant tissue. According to the widely accepted endosymbiotic theory [1] they originated from an ancient cyanobacterium, which was engulfed by a eukaryotic host cell.

What is the impact of having a chloroplast in plants explain by relating it to the food chain?

chloroplast, structure within the cells of plants and green algae that is the site of photosynthesis, the process by which light energy is converted to chemical energy, resulting in the production of oxygen and energy-rich organic compounds.

Which of the following could not be used as evidence to support the endosymbiotic theory quizlet?

Which of the following is NOT evidence for the endosymbiosis theory? NOT EVIDENCE: Mitochondria and chloroplasts have DNA that is similar to that found in the nucleus.

What are the steps of endosymbiotic theory?

Terms in this set (6)

  • Prokaryotic cell membrane folded into cytoplasm.
  • Nuclear membrane, endoplasmic recticulum, and golgi body are now independent of external membrane.
  • Ancestoral eukaryote engulfed, but did not kill prokaryote.
  • The prokaryote survived inside the eukaryote and each evolved a dependence of each other.

What evidence would support the hypothesis that photosynthesis evolved only once?

photosynthesis evolved only once on the eukaryotic tree. the chloroplast originated as a symbiotic cyanobacterium that became permanently incorporated into its host. Chloroplasts are thought to have evolved from cyanobacteria.

Why do plants require both chloroplasts and mitochondria?

Plant cells need both chloroplasts and mitochondria because they perform both photosynthesis and cell respiration. Chloroplast converts light (solar) energy into chemical energy during photosynthesis, while mitochondria, the powerhouse of the cell produces ATP- the energy currency of the cell during respiration.

What would happen if humans had chloroplasts?

What would happen if we had chloroplasts? The world would be very green. To be able to photosynthesize, an organism needs chloroplasts. … With a bit of sunlight, the chloroplasts work their magic and convert the absorbed water, minerals, and carbon dioxide into glucose, the same sugar that humans rely on for energy.

Do chloroplasts produce ATP?

Chloroplasts and mitochondria are the major ATP producing organelles in plant leaves.

Does chloroplast synthesis protein?

In chloroplasts, a few thousand proteins function in photosynthesis, expression of the chloroplast genome, and other processes. Most chloroplast proteins are synthesized in the cytoplasm, imported, and then targeted to a specific chloroplast compartment.

Do chloroplasts divide by mitosis?

Chloroplasts arose from a cyanobacterial endosymbiont and multiply by division, reminiscent of their free-living ancestor. However, chloroplasts can not divide by themselves, and the division is performed and controlled by proteins that are encoded by the host nucleus.

What are the roles of chloroplast and chlorophyll in photosynthesis?

What are the roles of chloroplasts and chlorophyll in photosynthesis? Chloroplasts contain a light absorbing molecule called chlorophyll and this is the place in plants where photosynthesis takes place.

What part of the plant cell helps give the cell support?

Cell Wall: This is the rigid outermost layer of a plant cell. It makes the cell stiff -providing the cell with mechanical support – and giving it protection. Animal cells do not have cell walls. Cell Membrane: This is a protective layer that surrounds every cell and separates it from its external environment.

How important is the chloroplast in photosynthesis?

Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process. By doing so, they sustain life on Earth. Chloroplasts also provide diverse metabolic activities for plant cells, including the synthesis of fatty acids, membrane lipids, …

Why is chlorophyll important for photosynthesis?

The role of chlorophyll in photosynthesis is vital. Chlorophyll, which resides in the chloroplasts of plants, is the green pigment that is necessary in order for plants to convert carbon dioxide and water, using sunlight, into oxygen and glucose.

Why is chloroplast The most important organelle?

Chloroplasts play an important part in the process of photosynthesis in some organisms. The chloroplast absorbs the energy in sunlight and uses it to produce sugars. Chloroplasts play an important part in the process of photosynthesis in some organisms.