Microorganisms that use organic compounds as energy and carbon
sources are
a. Chemoheterotrophs.
b. Chemoautotrophs.
c. Photoautotrophs.
d. Photoheterotrophs.

1 Answer

Answer :

c. Photoautotrophs.

Related questions

Description : Organisms which obtain energy by the oxidation of reduced inorganic compounds are called (a) photoautotrophs (b) chemoautotrophs (c) saprozoic (d) coproheterotrophs.

Last Answer : (b) chemoautotrophs

Description : Organisms which obtain energy by the oxidation of reduced inorganic compounds are called (a) photoautotrophs (b) chemoautotrophs (c) saprozoic (d) coproheterotrophs.

Last Answer : (b) chemoautotrophs

Description : 1st life on earth was (a) cyanobacteria (b) chemoheterotrophs (c) autotrophs (d) photoautotrophs. (

Last Answer : (b) chemoheterotrophs

Description : The first organisms to appear on Earth were chemoheterotrophs or chemoautotrophs ? -Biology

Last Answer : answer:

Description : The first organisms were (a) chemoautotrophs (b) chemoheterotrophs (c) autotrophs (d) eukaryotes

Last Answer : (c) autotrophs

Description : The first organisms were (a) chemoautotrophs (b) chemoheterotrophs (c) autotrophs (d) eukaryotes

Last Answer : chemoheterotrophs

Description : When the Exxon Valdez oil spill occurred, technologists "fertilized" the oil-soaked water with _____ to modify the environment and stimulate he growth of naturally occurring microorganisms. a. nitrogen sources (e.g., urea) b. phosphorus compounds c. other mineral nutrients d. A-C above are correct

Last Answer : d. A-C above are correct

Description : Which one of the following pairs is matched correctly? a. Ions - covalent bonds b. Carbon - organic compounds c. Glucose - enzyme d. Thymine - amino acid

Last Answer : b. Carbon - organic compounds

Description : How do microorganisms influence the carbon cycle on Earth?

Last Answer : Most of the organic matter present in soil originates in plant material from leaves, rotting trees, decaying roots, and other tissues. In the carbon cycle, soil bacteria and fungi recycle ... suffer an irreversible decline as the nutrients essential for life became tied up in complex molecules. 

Description : When acetate is the sole source of carbon for some microorganisms, the cycle  which is used, is called A.pentose phosphate pathway B.glycolyic pathway C.glyoxylate pathway D.oxaloacetate pathway

Last Answer : C.glyoxylate pathway

Description : How do the lipids differ from the other organic compounds? a. They are the largest organic compounds. b. They are nonpolar compounds. c. They have no biological role. d. They are not used for energy storage.

Last Answer : b. They are nonpolar compounds.

Description : Production of alcohol from organic compounds by microorganisms is known as (1) Combustion (2) Fermentation (3) Anaerobic: respiration (4) Aerobic respiration

Last Answer : (3) Anaerobic: respiration Explanation: The process of breaking down large molecules into simpler one in the presence of enzyme is called fermentation.

Description : Production of alcohol from organic compounds by microorganisms is known as (1) Combustion (2) Fermentation (3) Anaerobic respiration (4) Aerobic respiration

Last Answer : Fermentation

Description : If Organic sources of carcinogenic compounds in water persist even after chlorination, then what is the correct sequence among treatment processes listed below if all these are considered compulsory ? 1. Coagulation 2. Sedimentation 3. Filtration in ... c) 4- 2- 3- 1- 5 and 6 d) 1-5-2-3-4 and 6

Last Answer : d) 1-5-2-3-4 and 6

Description : Enzymes are A- organic compounds produced by living organism B- .inorganic compounds C- organic as well as inorganic compounds D- all of these

Last Answer : organic compounds produced by living organism

Description : Which microorganisms are involved in the pickling process in food production?

Last Answer : In the pickling process, microorganisms grow and ferment the food in a salty environment while producing large amounts of acid from available carbohydrates. Species of Leuconostoc and Lactobacillus are ... . Different spices are added to prepare various forms of sauerkraut and pickled cucumbers. 

Description : Are there any unique ways that humans derive benefits from microorganisms?

Last Answer : Humans derive substantial benefits from the activities of microorganisms. For example, many microbial species live in and on various parts of the body and prevent pathogenic bacteria from gaining a ... and used to produce vitamins, enzymes, organic acids, and other essential growth factors.

Description : Food must be moist, with a minimum water content of _____before contamination by microorganisms and spoilage can occur. a. 18% to 20% b. 10 to 15% c. 5 to 10% d. 0 to 5%

Last Answer : a. 18% to 20%

Description : Spoiled food can be caused from _____. a. enterotoxins in food b. contaminating microorganisms from the air c. human food handling d. A-C are correct

Last Answer : d. A-C are correct

Description : ____ is examples of drugs that are derived from the metabolism of microorganisms. a. Salvarsan b. Prontosil c. Penicillin d. A-C are correct

Last Answer : c. Penicillin

Description : All the following characteristics apply to fungi except: a. There may be 1.5 million species. b. They lack chlorophyll. c. They include molds and yeasts. d. They are prokaryotic microorganisms.

Last Answer : d. They are prokaryotic microorganisms.

Description : What part of the GI tract contains the largest population of microorganisms (micro biota)? a. Colon b. Jejunum c. Duodenum d. Stomach

Last Answer : a. Colon

Description : Craig Venter‘s sampling of ocean microorganisms is an example of a. Microarrays. b. Horizontal Gene Transfer. c. Microbial Forensics. d. Metagenomics.

Last Answer : d. Metagenomics.

Description : Complete destruction of the microorganisms is commonly known as A- disinfection B- sterilization C- antisepsis D- none of these

Last Answer : antisepsis

Description : The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as A- selective medium B- enrichment medium C- differential medium D- none of these

Last Answer : differential medium

Description : Which of the following microorganisms is classified as a member of archaebacteria? A- Gyanobacteria B- Methanobacteria C-Trichomonads D- Mycoplasma

Last Answer : Methanobacteria

Description : Microbiology includes which of the following groups of microorganisms? a. bacteria b. fungi c. algae d. protozoa e. all the above

Last Answer : e. all the above

Description : First person to describe microorganisms A Carolus Linnaeus B Robert Hooke C Francesco Redi D Antony van Leeuwenhoek

Last Answer : B Robert Hooke

Description : Organisms that practice heterotrophy are able to synthesize their own food from _____. a. light b. simple carbon sources c. carbon monoxide d. oxygen gas

Last Answer : b. simple carbon sources

Description : Organisms that generate energy using light are known as - (1) Chaemolithotrophs (2) Oligotrophs (3) Bacteria (4) Photoautotrophs

Last Answer : (4) Photoautotrophs

Description : One of the major sources of organic compounds is Natural gas (b) Fermentation (c) Sea water (d) Atmosphere

Last Answer : Natural gas

Description : Two richest known sources of edible protein are - (1) meat and eggs (2) milk and vegetables (3) soyabean and groundnut (4) some type of algae and other microorganisms

Last Answer : (3) soyabean and groundnut Explanation: The richest sources of protein are animal foods such as chicken, meat, fish, cheese and eggs. However, plant proteins are believed to be healthier because of their lower fat content.

Description : Two richest known sources of edible protein are (1) Meat and eggs (2) Some algae and other microorganisms (3) Soyabean and groundnut (4) Milk and leafy vegetables

Last Answer : Meat and eggs

Description : Proteins are chains of _____ that sometimes function as _____. a. monosaccharaides; energy compounds b. lipids; structural materials c. amino acids; enzymes d. disaccharides; enzymes

Last Answer : c. amino acids; enzymes

Description : The first line of host defense is the barrier presented to the external environment. Which of the following statement(s) is/are true concerning host barriers? a. Sebaceous glands secrete ... of the upper gastrointestinal tract d. Gut peristalsis serves to prevent microbial adherence and invasion

Last Answer : Answer: b, c, d The skin, mucus membranes, and epithelial layers of various organs of the body constitute effective physical barriers against microbial invasion. In certain portions of the ... very low pH within the stomach and gut peristalsis both serve to prevent microbial adherence and invasion

Description : Processed foods such as chicken pot pies, whole egg custard, mayonnaise, eggnog, and egg salad also may be sources of a. Staphylococcus b. Chlamydia c. Salmonella d. E.coli

Last Answer : c. Salmonella

Description : What are Chemoautotrophs? -Biology

Last Answer : answer:

Description : Following are the two statements regarding the origin of life. (A) The earliest organisms that appeared on the earth were non-green and presumably anaerobes. (B) The first autotrophic organisms were the chemoautotrophs that ... ) is correct but (B) is false. (d) (B) is correct but (A) is false.

Last Answer : (a) Both (A) and (B) are correct.

Description : 83. Which one of the following is wrong statement ? (1) Nitrosomonas and Nitrobacter are chemoautotrophs (2) Anabaena and Nostoc are capable of fixing nitrogen in free-living state also (3 ... living conditions (4) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

Last Answer : Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

Description : By which Carbon and hydrogen are estimated in organic compounds? -Do You Know?

Last Answer : The percentages of carbon and hydrogen in the compound are calculated from the masses of carbon dioxide and water. Estimation of carbon and hydrogen in an organic compound is based on their conversion to CO, and H20 respectively

Description : Biological Oxygen Demand (BOD) is a measure of: a. Industrial wastes poured into water bodies b. Extent to which water is polluted with organic compounds c. Amount of carbon monoxide inseparably combined with haemoglobin d. Amount of oxygen needed by green plants during night

Last Answer : Ans: A

Description : (3) They are not easily combustible Explanation: Typical organic compounds are combustible by nature as they contain carbon. Organic compounds mostly consist of carbon, hydrogen, halogen, and phosphorus.

Last Answer : Which of the process is known as nitrification? (1) Reaction of Nitrogen Monoxide with oxygen to form nitric acid (2) Reaction of nitrogen dioxide with water to form nitric acid (3) Conversion of ammonia to nitrites (4) Conversion of nitrite to nitric oxide

Description : (1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, ... violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Last Answer : Water is not effective in extinguishing a fire caused by petrol because - (1) the flame is too hot for water to cool it down (2) water and petrol react chemically (3) water and petrol are ... (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn

Description : Which element found in all organic compounds? (1) carbon (2) nitrogen (3) calcium (4) none of them

Last Answer : (1) carbon Explanation: Carbon is found in all organic matter, but NOT in inorganic matter organic means chemical compounds with carbon in them. In a more general sense, organic refers to living things.

Description : By which Carbon and hydrogen are estimated in organic compounds?

Last Answer : Liebig’s method

Description : Simplest binary organic compounds containing carbon and hydrogen only are called

Last Answer : hydrocarbons.

Description : Most of Nitrogen is used in the decomposition of __________ and thus plant shows deficiency symptoms : a. Amino acids b. Cellulose c. Carbon compounds d. Organic matter

Last Answer : Cellulose

Description : Proteins are most complex organic compounds, containing a. Carbon b. Hydrogen c. oxygen and nitrogen d. All of these

Last Answer : All of these

Description : The main role of bacteria in the carbon cycle involves (a) chemosynthesis (b) digestion or breakdown of organic compounds (c) photosynthesis (d) assimilation of nitrogenous compounds.

Last Answer : (b) digestion or breakdown of organic compounds

Description : The main role of bacteria in the carbon cycle involves (a) chemosynthesis (b) digestion or breakdown of organic compounds (c) photosynthesis (d) assimilation of nitrogenous compounds.

Last Answer : (b) digestion or breakdown of organic compounds