Biologists think that endosymbiosis gave rise to mitochondriabefore plastids partly because(A) the products of photosynthesis could not be metabolizedwithout mitochondrial enzymes.(B) all eukaryotes have mitochondria (or their remnants),whereas many eukaryotes do not have plastids.(C) mitochondrial DNA is less similar to prokaryotic DNA thanis plastid DNA.(D) without mitochondrial CO2 production, photosynthesiscould not occur.

Q: In the late 1960s (and since), Lynn Margulis (and others) provided considerable evidence for the…

A: Endosymbiotic theory states that the eukaryotic cells are a result of endosymbiosis between a larger…

Q: What is the evidence that mitochondria and chloroplasts descendfrom simpler cells engulfed long ago?

A: They consist of eubacteria and archaebacteria. Eukaryotes have complex internal organisation and…

Q: The concept of endosymbiosis as applied to chloroplast and mitochondria found in eukaryotes: a) is…

A: Endosymbiosis is a kind of relationship in which one organism enters in an another organism. The…

Q: In the three-domain model, the bacterial ancestor of chloroplasts derives from ancient A) O fungi.…

A: The three-domain system is a biological classification introduced by Carl Woese in 1990 that divides…

Q: One of these is NOT true about the mitochondria and plastid organelles in eukaryotes     A.…

A: All the organisms are classified either as prokaryotes or eukaryotes. Prokaryotes are primitive…

Q: bel the ectoplasm, endoplasm, pseudopodia, nucleus, and cell membrane of amoeba    please use…

A: An amoeba is a small single-celled protozoan belonging to the Amoebida class. Amoebas are known for…

Q: What role did the increase of atmospheric oxygen by prokaryotes play in the development of the…

A: The studies on geological history of oxygen shows that before photosynthesis evolved, the earth's…

Q: WHAT is a scientific question I can ask about Mitochondria & SDH Activity. What hypothesis can I say…

A: There are some points that will kept in mind : Mitochondria is energy converting organelles and are…

Q: The substance dichlorophenyldimethylurea (DCMU) is an herbicide thatinhibits photosynthesis by…

A: Dichlorophenyl Dimethylurea (DCMU) inhibits the photosynthesis by blocking the electron transfer to…

Q: How do mitochondria and chloroplast work together in plants to sustain life?

A: Mitochondria and chloroplasts are membrane bound organelles. Mitochondria is present in all…

Q: What evidence supports the hypothesis that mitochondriapreceded plastids in the evolution of…

A: Plastids are double membrane-covered cytoplasmic organelles that possess their own genetic machinery…

Q: How do the molecular sequences of genes in chloroplasts show how photosynthesis spread throughout…

A: It is supposed that chloroplast also was a primitive photosynthetic prokaryote as it has its own…

Q: Explain why evolutionary biologists are interested in choanoflagellates, green algae, and organisms…

A: Evolutionary biologists are very interested in choanoflagellates, green algae and organisms with…

Q: How does serial endosymbiosis explain the origin of chloroplasts?

A: Chloroplast is an organelle present in algal and plant cells. This organelle is responsible for…

Q: What role did symbiosis play in the origin of chloroplasts?

A: Symbiosis is a type of close relationship between two organisms. There are different types of…

Q: What are the ancestors of the chloroplasts in all plant cells?   Ancient mitochondria   Ancient…

A: Endosymbiotic theory is a theory that explains us how the eukaryotic cells are originated from the…

Q: DNA sequence data for a diplomonad, a euglenid, a plant, and an unidentified protist suggest that…

A: The diplomonads are the group of flagella containing organisms and are mostly parasitic in nature.…

Q: Chloroplasts and mitochondria evolved from an endosymbioticrelationship involvinga. purple bacteria…

A: Prokaryotes are the primitive organisms that were the first to develop and harness life on Earth.…

Q: What component have evolved first, the electron transport chain in chloroplasts or in mitochondria?

A: Following I will be discussing what evolved first the electron transport chain in mitochondria or…

Q: Molecular evidence supports the view that all plastids evolved from an ancient (a) cyanobacterium…

A: Plastids are the organelles present in plants and are classified according to the presence or…

Q: Which of the evolutionary sequences below does NOT represent how chloroplasts were derived?…

A: Mitochondria and chloroplasts probably evolved as separate species from engulfed prokaryotes that…

Q: The substance dichlorophenyldimethylurea (DCMU) is an herbicide thatinhibits photosynthesis by…

A: Electron transfer reactions require the collaboration of two photosystems during oxygen…

Q: It has been suggested that chloroplasts, like mitochondria,evolved from living organisms. What…

A: Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in…

Q: In terms of energy transduction (a) in vwhat way are mitochondrial complexes I, II, and IV similar?…

A: Constant energy transduction mechanisms are required for life to exist. The obtained energy, whether…

Q: 50) Some protists, formerly united as the ʺamitochondriateʺ clade, have recently been shown to be…

A: The Kingdom Protista has been disassembled over several decades as a result of sequence studies…

Q: What evidence supports the idea that the mitochondrion andchloroplast were once free-living members…

A: According to the evolutionary theory of endosymbiosis, the eukaryotic cells arose from prokaryotic…

Q: The substance dichlorophenyldimethylurea (DCMU) is an herbicide that in- hibits photosynthesis by…

A: DCMU is a selective inhibitor of photosynthesis. It inhibits the photosystem 2. Cyclic…

Q: According to the endosymbiotic theory, protoeukaryotes did not have ribosomes until the…

A: The Endosymbiotic Theory expresses that the mitochondria and chloroplast in eukaryotic cells were…

Q: Why do scientists believe that mitochondria evolved before chloroplasts? A. because all eukaryotic…

A: A cell is the basic unit of life.  All living creatures are made up of cells, ranging from…

Q: What structural feature of prokaryotic cells might you expect to have changed before and…

A: * Many structural features of prokaryotic cells have changed before endosymbionts acquired by…

Q: Which of the following most likely acquired chloroplasts from secondary endosymbiosis? O Euglena O…

A: Endosymbiotic theory states that the semiautonomous organelles such as mitochondria and chloroplasts…

Q: Some protist groups evolved when a non-photosynthetic eukaryote engulfed a red algae: instead of…

A: Primary endosymbiosis is when the eukaryotic cells engulf and absorbs a prokaryotic cell that are…

Q: How did the evolution of oxygen-releasing photosynthesis in cyanobacteria increase the likelihood…

A: The great number of similarities of mitochondria with the prokaryotic characters upon comparison…

Q: Animal cells have neither cell walls nor chloro-plasts, whereas plant cells have both. Fungal cells…

A: The cell is the most stated in general terms that they are refer as the fundamental structural and…

Q: Q. Because of the high energy demands related to swimming at depth, belugas possess very large…

A: The beluga whale is a native whale of the arctic sea. These whales are also known as white whales as…

Q: How can the hypothesis that asserts that chloroplasts as well as mitochondria were primitive…

A: Endosymbiotic theory states that the semiautonomous organelles such as mitochondria and chloroplasts…

Q: The endosymbiotic theory explains O How cells reproduce O How photosynthesis occurs O The difference…

A: The endosymbiotic theory states that mitochondria and chloroplast originated through a symbiosis…

Q: It has been suggested that chloroplasts, like mitochondria, evolved from independent living…

A: Prokaryotes are those organisms which lack a membrane bound nucleus. They consist of eubacteria and…

Q: What does the endosymbionttheory propose as the originfor mitochondria andchloroplasts? Explain.

A: Mitochondria are the cell organelle. It is usually termed as power house of the cell because it…

Q: The term "dominant generation" refers to:     two diploid life stages alternating with each other,…

A: * There are different types of life cycles can be seen in plants and algae  Haplontic Diplontic…

Q: What evidence supports the hypothesis that mitochondria preceded plastids in the evolution of…

A: Introduction Evolution is the key process that regulates the survivability and continuity of species…

Q: Molecular fossils further indicate the presence of ciliates and dinoflagellates in the emerging…

A: Evolution is the process by which an organism inherits or adapts favourable characteristics that…

Q: EVOLUTION CONNECTION Photorespiration can decreasesoybeans’ photosynthetic output by about 50%.…

A: In plants, carbon fixation occurs by an enzyme called as rubisco, and the enzyme of the Calvin cycle…

Q: 1) Dichlorophenyldimethylurea inhibits photosynthesis by blocking electron transfer between the…

A: Dichlorophenyldimethylurea is an algicide and herbicide, which destroys them by inhibiting their…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.