Which of the following refers to eukaryotes?
Which of the following refers to eukaryotes?
Eukaryotes are nuclear organisms. Of the listed organisms eukaryotes include an amoeba (single-celled animal). E. coli, Streptococcus, Vibrio cholerae are bacteria (prokaryotes).
Which of the following does not have metabolism?
Viruses do not have their own metabolism in the cells, and they are not living beings.
Which of the following are prokaryotes?
Prokaryotes are nuclear-free bodies, so bacteria and blue-green are prokaryotes, because they do not have the drawn up nucleus.
Which of the following have chloroplasts?
Only the green plants have chloroplasts.
Symbiotic organisms include
Lichens are a symbiosis of algae and fungi.
Autotrophic eukaryotes belong to the kingdom of
Organisms having a nucleus and autotrophic way of eating relate to plants. Animals, fungi do not have chloroplasts, that are necessary for autotrophic way of eating, i.e. they atr heterotrophs. The bacteria are prokaryotes.
Organisms which cells do not have the nucleus, mitochondria and Golgi apparatus belong to the group of
Eukaryotes, algae and protozoa have a nucleus.
Which of the following belongs to the kingdom of bacteria?
Malaria parasite and ciliate-shoes are single-celled animals, chlorella is an algae, E. coli is a bacteria.
Which group of bacteria live in association with the other organisms?
Symbiosis is a cohabitation of organisms that benefit each other.
Which of the following causes the disease of pulmonary tuberculosis in human?
Tuberculosis is a disease caused by bacteria-parasite, the tubercle bacillus.
The similarity of the structure of the cells of autotrophic and heterotrophic organisms is the presence of
All the kingdoms of nature have the plasma membrane in the cells. Chloroplasts, fiber cladding and vacuole with cell sap are signs of plants, i.e. autotrophic organisms.
The presence of oxygen is necessary for normal functioning for which type of organisms?
Anaerobes do not need oxygen, heterotrophic and autotrophic organisms are the division of nutrition methods and aerobic organisms need oxygen.
Viruses differ from plants, animals, fungi or bacteria in that they
Viruses live only in cells, therefore they do not have theirs own metabolism.
Choose the non-cellular forms of life.
Bacteriophage is a virus. By nature viruses are autonomous genetic elements with extracellular stage in the development cycle. Outside the cell the virus particles do not show signs of live and behave themselves as particles of organic polymers.
Choose the organism with the non-cellular structure.
Zoster virus is a virus by nature. Viruses are autonomous genetic elements with extracellular stage in the development cycle. Outside the cell the virus particles do not show signs of live and behave themselves as particles of organic polymers.
Yeast and penicillium are fungi, i. e. eukaryotic cells.
Vibrio cholerae is a bacterium, that is a prokaryotic cell.
The main difference in the structure of the smallpox virus from diphtheria bacilli is the absence of
Viruses are microscopic particles consist of a nucleic acid molecule (DNA or RNA) enclosed in a protein coat.
Gene is a DNA region of a molecule.
The ribosomes are the cell organelles, and the viruses are not a form of cell life, so they do not have organelles.
Which of the following have the smallest size?
Viruses are smaller then bacteria, plant and fungi.
Which of the following do not have the cellular structure?
Bacteria, fungi, plants are the kingdoms of nature and composed of cells. Viruses do not have cellular structure (non-cellular life forms). They represent a transitional form between the animate and inanimate matter. Each particle consists of viral RNA or DNA enclosed in a protein coat which is called the capsid. Viruses can multiply only in the cells of other organisms. Beyond cell organisms, they show no signs of life.
Where viruses can multiply?
Viruses are obligate parasites, so they are unable to reproduce outside the cell.
Which of the following have a capsid?
Capsid is the outer membrane of the virus, which consists of proteins. Of these organisms only a bacteriophage is a virus.
Which of the following consist only of protein and nucleic acid?
Viruses consist only of the protein and nucleic acids (an exception is the influenza virus and HIV that also containing lipoproteins). All others have carbohydrates in their structure.
Which of the following use the energy of the oxidation of inorganic compounds for their livelihoods?
Phototrophs is a general name of organisms that use light as an energy source.
Chemotrophs are organisms that get their energy as a result of redox reactions, oxidizing chemicals, energy-rich chemosynthesis (both inorganic, such as molecular hydrogen, sulfur, and organic, carbohydrates, fats, proteins, waxes, organic compound).
Parasites ar heterotrophic organisms, so they feed at the expense of other organisms (called hosts) and mostly damaging them.
Saprophytes are heterotrophs that feeding of organic matter of dead organisms or secretions of living organisms.
Which of the following are always parasites?
Viruses are obligate parasites.
Which group of organisms is capable of photosynthesis?
Cyanobacteria is a large group of large gram-negative bacteria that capable of photosynthesis, that accompanied by the release of oxygen.
What is bacteriophage?
Bacteriophage is a bacterial virus that cause destruction (lysis) of bacteria and other microorganisms.
Viruses, in contrast to plants and animals, are
By nature viruses are autonomous genetic elements with extracellular stage in the development cycle. Outside the cell the virus particles do not show signs of live and behave as particles of organic polymers.
Which of the following consist of nucleic acid surrounded by a protein capsule?
Viral particles (virions) consist of two or three parts: the genetic material in the form of DNA or RNA; protein shell (capsid) that protects the molecule and, in some cases, - additional lipid membranes.
Which of the following are eukaryotes?
Eukaryotes are organisms whose cells have a nucleus decorated. Eukaryotes are plants, animals and fungi.
Bacteria-saprotrophs and streptococci are bacteria, unicellular prokaryotic organisms. Viruses are non-cellular life form.
Which organisms convert the energy of oxidation of inorganic substances into the energy-rich ATP connections?
Chemotroph are organisms receiving energy by redox reactions, oxidizing chemicals, unlike phototrophs that receive energy from photosynthesis.
Heterotrophs (saprotrophs, parasites, mixotrophs) are organisms that are unable to synthesize organic compounds from inorganic through photosynthesis or chemosynthesis.
Moulds by the way of eating referred to as
Heterotrophs are organisms that are unable to synthesize organic substances from inorganic by photosynthesis or chemosynthesis. Yeast, fungi and bacteria mostly can not swallow solid food; they absorb organic matter necessary for them directly through the cell walls. This type of eating is called heterotrophic saprophytic. Saprophytes can grow only in places where there are decomposing organisms, accumulation of animal, vegetable or plant waste products.
Which of the following is common for viruses, certain bacteria and lower fungi?
Viruses are obligate parasites (not enter into symbiosis, can not independently produce organic substances from inorganic and have no metabolic processes). All viruses cause infectious disease. Infectious diseases is a group of diseases caused by penetration into the body of pathogenic (disease-causing) organisms.
Chemotrophic way of eating is typical for
Chemotroph are organisms receiving energy by redox reactions, oxidizing chemicals, unlike phototrophs that are receiving energy from photosynthesis.
Chemotrophs are only bacteria that oxidize various minerals (iron bacteria, sulfur bacteria, etc.).
Which of the following organisms are related to arthropods?
Lancelet and the shark are the type of chord, starfish is the type of echinoderms, crayfish is the type of arthropods.
Which of the following organisms is related to echinoderms?
Fly drozofilla is the type of arthropods. Planaria is the type of flat worms, earthworms are the type of annelid worms, starfish is the type of echinoderms.
Indicate an example of heterotrophic organism.
Chlamydomonas and cyanobacteria are photosynthetic organisms, sulfur bacteria are chemotrophic organisms, tuberculosis bacillus is a heterotrophic bacteria.