1. Which of the following is not an evidence that chloroplasts and mitochondria originated as prokaryotic endosymbionts of larger cells? *   A. They contain circular DNA molecules not associated with proteins. B. Their membranes have enzymes and transport systems that resemble those found in plasma membranes of prokaryotes. C. Their ribosomal RNA is more similar to that of eubacteria than to eukaryotes. D. They contain their own genome and produce their own proteins.

Q: Green algae and brown algae show __________________ evolution, since they look similar, but are not…

A: Green and Brown algae are very similar in their features, such as possessing pigments for trapping…

Q: The endosymbiotic theory explains the:a. origin of the first prokaryotic cells.b. origins of…

A: Genome is referred to as the genetic material of an organism that can be DNA or RNA(viruses). The…

Q: Mitochondria likely originated froma. archaea.b. invaginations of the cell membrane.c. bacteria.d.…

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: hough plants, fungi, and prokaryotes all have cell walls, we classify them under different taxonomic…

A: A cell wall is a tough layer that is present outside the cell membrane. It is the outermost layer of…

Q: which of the following are evidence that chloroplasts and mitochondria originated by endosymbiosis?…

A: There are several hypotheses for the origination of eukaryotic cells. The hypothesis which states…

Q: 1. If the multicellular organisms arise from the unicellular organisms, can you tell that all the…

A: Since we are allowed to answer a single question at a time. So if you want other questions to be…

Q: It is thought that the mitochondria and chloroplasts of eukaryotic cells came froma. the development…

A: The main difference between the Eukaryotic cell & Prokaryotic cells is that the Eukaryotic cell…

Q: Plastids that are surrounded by more than twomembranes are evidence of(A) evolution from…

A: Plastides are double-membrane organelles that are present in plant and algae cells. Plastids are…

Q: 2. The oldest eukaryotic organisms are considered to be A. diplomonads like Giardia B. archaea C.…

A: Note: Since you have asked multiple unrelated questions, we are solving the first question for you.…

Q: 9. Which of the following groups of organisms are considered likely to have been the first living…

A: Question - Which of the following groups of organisms are considered likely to have been the first…

Q: 2. Why is PCR useful?

A: Option d is the correct answer, that is V, I, II, IV, III. Explaination- First eukaryotes- App.…

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: 3. Which of the following eukaryotic kingdoms is heterotrophic, feeds by ingestion, and is able to…

A: The prokaryotic cells are very primitive and simple and they lack membrane-bound organelles and…

Q: Tell whether the statement is true or false.  1. The endosymbiont hypothesis state that prokaryotes…

A: The cells are the structural and functional unit of an organism that perform all the processes of an…

Q: according to _______ hypothesis a multicellular organism originated from a coenocytic protist with…

A: The cellularization (syncytial) theory According to cellularization (syncytial) hypothesis a…

Q: 1. What are architarchs? These are A. fossils that resemble the ruptured coats of cyanobacteria. B.…

A: Architarchs: a. It is the remnants left by the eukaryotic organisms which are ten times smaller. b.…

Q: Fossilized stromatolites(A) formed around deep-sea vents.(B) resemble structures formed by bacterial…

A: Stromatolites are the fossils formed about 3.5 billion years ago, they are the earliest fossils.…

Q: The cell walls of fungi are strengthened by chitin, a strong but flexible polysaccharide. Which of…

A: Fungi are group of eukaryotic organisms.

Q: 2. You discovered a new organism that is multicellular, eukaryotic and heterophilic. Identify…

A: Answer: There is a kingdom classification system of all species on earth under: ANIMAL , PLANT ,…

Q: All of the following are included in the six kingdoms of life, EXCEPT: *   A. plantae B.…

A: Cavalier Smith was first to proposed the six kingdom classification in 1998. This system classify…

Q: 5. View the protists blood parasites (Trypanosoma cruzi, Trypanosoma brucei, and Plasmodium vivax).…

A: Trypanosomes are zooflagellate protozoans that are obligate parasites that can cause parasitic…

Q: Biologists at NASA are studying new life forms found in the arctic and have collected an unknown…

A: The living organisms composed of cells. The cells are classified into prokaryotic and eukaryotic…

Q: 6. Which organelle likely evolved first in ancient protists (acritarchs)? a. Golgi apparatus b.…

A: Organelles are the substances that are found in the cells of the eukaryotic organisms.

Q: . Why are protist, plants, fungi and animals classified into the same domain but into different…

A: Introduction :- Fungi, in collaboration with bacteria, break down organic matter and release carbon,…

Q: Bacteria that cause the disease typhus are close relatives of bacteria that evolved into _____.…

A: Bacteria are a type of biological cell. They constitute a large domain of prokaryotic…

Q: On the tree of life, branches that lead to several groups of green algae branch off from the one…

A: Algae is the microscopic photosynthetic organism which belong to the Kingdom Protista. They are the…

Q: 6. Which one of the following statements is the wrong ? a) A species is generally defined as a group…

A: The animal kingdom consists of both living and extinct organisms. Species are classified within the…

Q: 2. Biologists think that there may be millions of species that are not yet scientifically described…

A:

Q: 3. The following simple rules describe how to categorize living organisms into one of five kingdoms-…

A: Various classification systems were discovered in order to classify various kingdoms of organism…

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: 7. Which of the following statements about early life on earth is incorrect? A) Earth was anoxic B)…

A: Early life on earth was different than today. The life forms used arsenic before using oxygen or…

Q: Chloroplasts of green algae evolved from_____ . a. cyanobacteria b. archaea c. red algae

A: Chloroplasts are the cellular organelles in plants and green algae. It is the site of photosynthesis…

Q: 1. Discuss the Endosymbiotic theory. Do you think it eukaryotes emerged on earth? Justify your…

A: Endosymbiotic theory of evolution states that the origin of today's eukaryotic organism occur from…

Q: _ 7. What is meant by the term fossil fuel? In order to obtain energy from these fuels, a technique…

A: The fossil fuel is an important source of energy production. It is produced from the geological…

Q: A scientist claims that the presence of aquaporins in chloroplast membranes supports the…

A: The occurrence of the eukaryotes from the prokaryotes in due course of evolution is the main point…

Q: 1. How do you recognize the following in a plant cell      a. a vacuole      b. a raphid      c. a…

A: Plant cells are eukaryotic in nature, which have their membrane-bound organelles and nucleus.

Q: The membrane structure that eventually evolved into the double nuclear membrane of the eukaryotes…

A: Introduction The nuclear envelope, also known as the nuclear membrane, is a pair of lipid bilayer…

Q: .1 The kingdom Protista is divided into three main groups: Give ONE example from each group.…

A: Protista These are a kingdom which include simple eukaryotic organisms. These are composed of…

Q: Which of the following is correct regarding multicellularity? a) All protists are unicellular…

A: Multicellularity is a condition of an organism composed of more than one cell performing different…

Q: 15. Kingdom fungi are ---------- . A. eukaryotic heterotrophs B. prokaryotic heterotrophs C.…

A: Kingdom fungi: It include multicellular heterotrophic eukaryotes with the chitinous cell wall.…

Q: 1) According to the endosymbiotic theory of the origin of chloroplasts, photosynthetic prokaryotic…

A: The endosymbiotic theory proposes that membrane-bound organelles seen exclusively in eukaryotic…

Q: What is a reasonable explanation for why some genes still remain in the mitochondria?

A: Mtochondrion It is a double membrane-bound organelle which is  found in most eukaryotics. It is…