49. Which of the following eukaryotic kingdoms is heterotrophic and non-photosynthetic, and has a cell wall with a high content of chitin, but cannot synthesize the protein collagen? A. Kingdom Archaeobacteria B. Kingdom Eubacteria C. Kingdom Animalia D. Kingdom Plantae E. Kingdom Fungi

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: 1. With specific examples, explain why some bacteria have resistance to some drugs. 2. List and…

A: Using bactericidal drugs has worked in favor of some bacteria as they became unaffected by the drugs…

Q: Briefly describe 4 differences between prokaryotes and eukaryotes

A: The term “prokaryote” is derived from the Greek word “pro“, (meaning: before) and “karyon” (meaning:…

Q: 4.  an ancestral eukaryote engulfed an aerobic bacterium that evolved into this present day a.…

A: Mitochondria and chloroplasts likely evolved from engulfed bacteria that once lived as independent…

Q: Mitochondria most likely evolved from _____________. a. a photosynthetic cyanobacterium b.…

A: Introduction: Mitochondria is a cellular organelle that is also known as the powerhouse of the cell.…

Q: Which of the following are not eukaryotic? a. bacteria b. archaea c. protozoa d. both a and b

A: The cell is the basic structural and functional unit of life of all living organisms capable of…

Q: Bacteria are similar to archaea in that theya. arose through endosymbiosis.b. are multicellular.c.…

A: Bacteria are similar to archea in that they arose from endosymbiosis ( an organism which lives…

Q: This group of prokaryotes are not actually closely related but are grouped together because they are…

A: Prokaryotes are the single celled organisms without a proper nuclear membrane. Bacteria is included…

Q: Some prokaryotes, especially archaea, are capable of living in extreme environments, such as…

A: Prokaryotes are the organisms that have nucleus which means they do not possess true nucleus in…

Q: 19) which of the trees in this figure groups the domains according to similarities in cellular size…

A: Phylogeny shows evolutionary relationship among organisms . The above phylogenetic tree shows the…

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: (a) What is the function of inclusion bodies in prokaryotic cells?(b)Where are they present?(c) Give…

A: Inclusion bodies are also known as elementary bodies. They are nuclear or cytoplasmic aggregates of…

Q: 29) The unicellular-photosynthetic flagellated cell, responsible for Red Tide Phenomenon are called:…

A: Red tide: it is usually a phenomenon of algal bloom. The microscopic algae increases their…

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: 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: Through what process did eukaryotic cells gain chloroplasts and mitochondria? a. engulfment b.…

A: Eukaryotic cells have nucleus with nuclear membrane, also possess ribosome, mitochondria, plasma…

Q: Which of the following is NOT a eukaryotic microorganism? A) a protozoan B) a yeast C) an archaean…

A: Introduction Autotrophs:- An autotroph is an organism that is able to make its own food from raw…

Q: Unlike eukaryotic cells, prokaryotic cells . a. have no nucleus b. have RNA but not DNA c. have no…

A: Prokaryotes: It is a type of cell that does not have a true nucleus and membrane bound organelles.…

Q: 10. Prokaryotic cell movement is attributed to: A. capsules. B. flagella. C. ribosomes. D. pili 11.…

A: A prokaryotic cell movement is attributed to flagella (option C). Reason: Capsule: Outermost layer…

Q: 30. Which of the following trees of life (showing Archaea (A), Bacteria (B), and Eukarya (E)) best…

A: Answer--- correct option is (a) Tree of life is also known as phylogenetic tree.

Q: The presence of a membrane-enclosed nucleus is a characteristic of ________. a. prokaryotic cells b.…

A: There are a great variety of organisms occurring in the environment. The organisms may be…

Q: What type of bacteria are also called blue-green algae?(a) Paramecium(b) Archaea(c) Eubacteria(d)…

A: Autotrophs are organisms which can synthesise their own food via photosynthesis. For example:…

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: Which organisms are multicellular eukaryotes, with the majority being photosynthetic producers? a.…

A: Photosynthesis is the process by which light energy is trapped by food-producing organisms and is…

Q: Peptidoglycan is a chemical compound found in the cell walls of (a) most viroids (b) most archaea…

A: Peptidoglycan is a polymer consist of sugar and amino acids which forms a mesh-like structure…

Q: 2. Describe a prokaryotic cell in depth and give an example of an organism that is made of…

A: Domains of life There are typically three domains of life classified, bacteria, archaea and eukarya.…

Q: Which of the following describe prokaryotes? a) usually have a circular chromosome  b) typically…

A: All the living organisms classified as prokaryotic and eukaryotic.

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: 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: Chapter 6 -How does the structure of an enzyme affect its function in a cell? Chapter 7 - What…

A: Mitochondria are mainly located in eukaryotes and not located in single-cell organelles like RBC…

Q: 1) A newly discovered unicellular organism isolated from acidic mine drainage is found to contain a…

A: ▪︎ Eukaryotes are the organisms  whose cells contain nucleus and other membrane bound organelles…

Q: Which of the following is considered a distinguishing characteristic of prokaryotic cells? Question…

A: The cell is the basic structural,functional and biological unit of all known organisms. A cell is…

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: Both archaea and eukaryotes have______ . a. peptidoglycan c. a nucleus b. histone proteins d. a…

A: Introduction :- Eukaryotes are organisms with a nucleus and other membrane-bound organelles in their…

Q: 17. The biological classification system categorizes organisms into which of the following domains?…

A: Domain is defined as the highest level of taxonomic rank attributed in the hierarchical biological…

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: Prokaryote is characterized by:   A Dispersed DNA and lack of membrane bound organelles B…

A: Cell is structural and functional unit of life as it is the smalles unit that is capable of existing…

Q: Pseudopeptidoglycan is a characteristic of the walls of ________. a. eukaryotic cells b. bacterial…

A: The cell is the basic part of life for the living beings on this planet. Cells are made up of…

Q: Which statement best explains why the third domain, Archea, was added to the original two domains of…

A: The three-domain system is defined as a biological classification that was proposed by Carl Woese in…

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: 6. Would the following ancestral cell have been a prokaryote or an early eukaryote? Briefly explain…

A: The following ancestral cell have been a prokaryote where infolding of plasma membrane gave rise to…

Q: 3. Which of the following eukaryotic kingdoms is autotrophic, uses sunlight to synthesize food…

A: The characteristics of organisms determine the position of the organisms in the particular kingdom.…

Q: Which of the following observations about a bacterium would distinguish it from the last eukaryotic…

A: Bacteria are common, largely free-living organisms that are often made up of only one biological…

Q: In prokaryotes, after the ribosomes completes a synthesis, one would expect to find: a) a new…

A: Prokaryotes are unicellular microscopic organisms that don’t have nucleus and other membrane bound…

Structure and Composition of Cell Membrane

Despite differences in structure and function, all living cells in multicellular organisms are surrounded by a cell membrane. Just like the outer layer of the skin separates the body from its environment similarly, the cell membrane, also known as 'plasma membrane,' separates the inner content from its exterior environment.

Cell Membrane

The cell membrane is known by different names like plasma membrane or cytoplasmic membrane, or biological membrane. The term "cell membrane" was first introduced by C. Nageli and C. Cramer in the year 1855. Later on, in 1931, the term "plasmalemma" for cell membrane was given by J. Plowe. The cell membrane separates the cell's internal environment from the extracellular space. This separation allows the protection of cells from their environment. 

Prokaryotes vs Eukaryotes

The cell is defined as the basic structural and functional unit of life. The cell membrane bounds it. It is capable of independent existence.