What are Chemoautotrophs? -Biology

What are Chemoautotrophs? -Biology
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The first organisms to appear on Earth were chemoheterotrophs or chemoautotrophs ? -Biology

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

Last Answer : answer:

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

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

Last Answer : (c) autotrophs

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

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

Last Answer : chemoheterotrophs

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 never released oxygen. Of the above statements which one of the following options is correct? (a) Both (A) and (B) are correct. (b) Both (A) and (B) are false. (c) (A) is correct but (B) is false. (d) (B) is correct but (A) is false.

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.

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

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

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

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

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

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

Last Answer : c. Photoautotrophs.

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) Root nodule forming nitrogen fixers live as aerobes under free-living conditions (4) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

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