Biologists at NASA are studying new life forms found in the arctic and have collected an unknown specimen that appears to have a cell membrane, ribosomes and mitochondria. This specimen could be… a.a bacterium b. a virus c. an archaeon d. any one of the above e. a eukaryote

Q: Virtually all eukayotic organisms have this organelle suggesting they evolved in an aerobic world.…

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

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: ______carry out oxygen-releasing photosynthesis. a. Spirochetes c. Cyanobacteria b. Chlamydias d.…

A: Photosynthesis can be defined as the process by which green plants and certain other organisms will…

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: Over generations, prokaryotic cells are capable of ___________ learning by reconfiguring signaling…

A: The prokaryotic cell is one of the simplest known cells without a true nucleus capable of performing…

Q: The ________ is involved in the movement of a prokaryotic cell.a. fimbriaeb. capsulec. nucleoidd.…

A: Cell is the smallest structural and, functional unit of life. All the biochemical reactions take…

Q: Which of the following is not a characteristic that chloroplasts and mitochondria share?

A: Every living organism is made up of cells. A cell is a small self-contained unit within a whole…

Q: Archaea differ from bacteria in that theya. have a nucleus.b. have membrane-bound organelles.c. have…

A: Answer is e.) none of these are correct.

Q: A bacterium is_______ (choose all that apply). a. an organism c. an animal b. single-celled d. a…

A: There are many different types of organisms found on the planet. So it is important to classify…

Q: A virologist is trying to make a new antiretroviral drug to treat HIV. In order to do so with the…

A: Human immunodeficiency virus ( HIV ) is an infectious disease which is affecting the immune system…

Q: Which of the following are prokaryotic? a. bacteria b. archaea c. protists d. both a and b

A: The living organisms can be divided on the basis of their cellular structure into two types -…

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: Archaea are distinct from bacteria becausea. some archaea form methane.b. each have different rRNA…

A: Archaea were categorized as bacteria initially, but biochemical studies found that they have…

Q: One difference between the kingdom Protista and the other three kingdoms in the domain Eukarya is…

A: The living organisms can be divided into three domains - Archaea, Bacteria, and Eukarya. Archaea are…

Q: Compare and contrast the structure and function of the following among bacteria and eukaryotes: a.…

A: In bacteria, ribosomes are cellular structures responsible for protein synthesis. They are composed…

Q: 1. Kingdom of excavate organisms characterized by the presence of discoid cristae in mitochondria.…

A: Excavata is a major supergroup of unicellular organisms belonging to the domain Eukaryota. This…

Q: which of the following are prokaryotic? a. Bacteria  b. protist c. Archea  d. both a and c e. all of…

A: A prokaryote are unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any…

Q: Amoebas, foraminifera, and radiolarians move using theira. cytoplasm.b. flagella.c. cilia.d. setae.

A: The organisms are classified into- eukaryotes and prokaryotes. The prokaryotes do not have a well…

Q: Let’s say we’ve just found a single-celled organism living in a pond. This organism has a nucleus, a…

A: The five kingdom classification divides the living organism in two different group on the basis of…

Q: A group of biology students studied four different cell specimens under a microscope and recorded…

A: prokaryotes have relatively simple structure and they not very complex as compared to eukaryotes…

Q: Archaea are most closely related to which of the following major groups on the tree of life?   a.…

A: To classify bacteria, archaea and eukaryotes, three-domain system of biological classification was…