Homework Answers
15. A
16. C
15 and 16.
The process of conversion of atmospheric molecule of Nitrogen into usable form of Nitrogen is referred to as nitrogen fixation. The incorporation of this usable form of Nitrogen into plants is referred to as nitrogen assimilation.
The first step in nitrogen fixation is ammonification. It occurs with the help of ammonifying bacteria which converts molecule of diNitrogen into ammonium ion.
The second step is the Ammonia into nitrite by nitrite reductase enzyme.
The third step is the conversion of nitrite into nitrates by nitrate reductase enzyme.
All these three steps are performed by different groups of bacteria. This bacteria are collectively called as nitrogen fixers.
The final step in nitrogen cycle is the incorporation of nitrate in to plants which is referred to as nitrogen assimilation. Nitrate inside plants is used to form nitrogen containing compounds like amino acids and proteins.
17. D
Phosphate is used to prepare adenosine triphosphate because it contains a phosphate group. Phospholipid are also made up of hydrophilic phosphate group and hydrophobic fatty acid tails. Nucleotides contain phosphate group and sugar molecule along with the nitrogen bases. All these molecules contain phosphate and therefore phosphate is used to prepare all these.
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15. Which of the following is NOT able to break the triple bond of N2? Nitrate...
Most plants can absorb and use which of the following forms of nitrogen directly? A) nitrite...
Most plants can absorb and use which of the following forms of nitrogen directly? A) nitrite and nitrate B) nitrate only C) ammonium and nitrogen gas D) nitrate and ammonium Nitrogen fixation consists of A) the conversion of ammonia to nitrate. B) the production of ammonium from decomposing organic matter. C) the conversion of N2 to ammonia. D) the conversion of N2 to ammonia or nitrate.
Write the balanced chemical reaction for the following nitrogen cycle reactions. These reactions ...
Write the balanced chemical reaction for the following nitrogen cycle reactions. These reactions are mediated by bacteria and plants in nature and in wastewater treatment. (a) nitrification of ammonium to nitrite using molecular oxygen. (b) nitrification of nitrite to nitrate using molecular oxygen. (c) denitrification of nitrate to N2 using succinic acid as the carbon & energy source. (d) If a wastewater effluent has an ammonium concentration of 12 mg/L as N, what is the nitrogenous oxygen demand (how much...
3. Nitrogen Fixation is a process by which some bacteria can convert N2 into ammonia. This...
3. Nitrogen Fixation is a process by which some bacteria can convert N2 into ammonia. This process is very important in making the element nitrogen, a component of amino acids and nucleotides, available to ecosystems. Even though N2 makes up 80% of the atmosphere, nitrogen is the limiting nutrient in many ecosystems. Because nitrogen fixation is so energetically expensive, bacteria will only synthesize the proteins needed for this process if there is no available source of already fixed nitrogen, such...
The enzyme that converts atmospheric nitrogen to ammonia in the nodules of the rhizobium/plant symbiosis is...
The enzyme that converts atmospheric nitrogen to ammonia in the nodules of the rhizobium/plant symbiosis is The greatest source for fixing molecular nitrogen (N_2) to ammonium (NH_4^+) in terrestrial environments is Why is NH_4^+ toxic to all organisms if allowed to accumulate beyond -0.5 mM? The statement above is false - NH_4^+ is not toxic but is instead an important source of nitrogen. NH_4^+ reacts with NADPH (and NADH) to reduce the reducing power in a cell. At pH 7...
Please answer ALL In DNA, which strand is continuously synthesized A) leading strand B) lagging strand...
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4.) Among the following six statements given below which two best account for the results obtained...
4.) Among the following six statements given below which two best account for the results obtained by the researchers who produced Figure 1? 1. Low glucose conditions caused mutations that made individual E. coli cells better suited to these conditions 2. Daughter cells acquired the ability to tolerate low-glucose conditions as they received enzymes and membrane components that had been modified by their mother cell. 3. The initial E. coli population may have included some cells whose genes favored their...
Energy in the from the sun, and store that enerngy as . Plants are able to captone chemical bonds...
check the answer plz
energy in the from the sun, and store that enerngy as . Plants are able to captone chemical bonds of glucose. a potential:potential kinetic the following is a funsction of cholesterol in the plasma nuidity of the membr passage of substances into and out of the cell d prodection of the membrane prokhryotic or eukaryotic? 9. If you found a iey cell under a microscope how could you determine if that cell was of a a....
30. Harmful mutations in the mitochondrial genes coding for the electroe transport system would most atfect which of the processes? Choose the best answer A. oxygen diffusion ito red blood cells...
30. Harmful mutations in the mitochondrial genes coding for the electroe transport system would most atfect which of the processes? Choose the best answer A. oxygen diffusion ito red blood cells B. urine flow out of the urethra C. rapid beating of a hummingbirds wings D. formation of the phospholipid bilayer from free phospholipids E. the Calvin cycle CSLO6: AN 31. A specific poison blocks H' transport across the inner membrane of the mitochondria How will this directly affect the...
or the following anatomical structures, which is homologous to the bones in the wing of a...
or the following anatomical structures, which is homologous to the bones in the wing of a bird? Albones in the hind Iimb of a kangaroo C) bony rays in the tail fin of a tlving fish B) chitinous struts in the wing of a batterfly D) bones in the fipper of a whale 25 Which of the following evidence most strongly supports the oommon origin of all life on Earth? All organisms A) require energy B) use essentially the same...
Multiple Choicepoints each) . Ades bond be e ach-arsers wat teen this when as well as...
Multiple Choicepoints each) . Ades bond be e ach-arsers wat teen this when as well as a ser h ale (ATP) is a good energy source because of the existence of mine nich and the remainder of the molecule. consider both intramolecular and intermolecular bonds.) e mad-cow disease entity is known as an) cells but is not composed of cells and contains either RNA O Between the terminal a) rose roup b) amino roup e) adenosine d) phosphate group ma...
3. Nitrogen Fixation is a process by which some bacteria can convert N2 into ammonia. This process is very important in making the element nitrogen, a component of amino acids and nucleotides, available to ecosystems. Even though N2 makes up 80% of the atmosphere, nitrogen is the limiting nutrient in many ecosystems. Because nitrogen fixation is so energetically expensive, bacteria will only synthesize the proteins needed for this process if there is no available source of already fixed nitrogen, such...
The enzyme that converts atmospheric nitrogen to ammonia in the nodules of the rhizobium/plant symbiosis is The greatest source for fixing molecular nitrogen (N_2) to ammonium (NH_4^+) in terrestrial environments is Why is NH_4^+ toxic to all organisms if allowed to accumulate beyond -0.5 mM? The statement above is false - NH_4^+ is not toxic but is instead an important source of nitrogen. NH_4^+ reacts with NADPH (and NADH) to reduce the reducing power in a cell. At pH 7...
4.) Among the following six statements given below which two best account for the results obtained by the researchers who produced Figure 1? 1. Low glucose conditions caused mutations that made individual E. coli cells better suited to these conditions 2. Daughter cells acquired the ability to tolerate low-glucose conditions as they received enzymes and membrane components that had been modified by their mother cell. 3. The initial E. coli population may have included some cells whose genes favored their...
check the answer plz
energy in the from the sun, and store that enerngy as . Plants are able to captone chemical bonds of glucose. a potential:potential kinetic the following is a funsction of cholesterol in the plasma nuidity of the membr passage of substances into and out of the cell d prodection of the membrane prokhryotic or eukaryotic? 9. If you found a iey cell under a microscope how could you determine if that cell was of a a....
30. Harmful mutations in the mitochondrial genes coding for the electroe transport system would most atfect which of the processes? Choose the best answer A. oxygen diffusion ito red blood cells B. urine flow out of the urethra C. rapid beating of a hummingbirds wings D. formation of the phospholipid bilayer from free phospholipids E. the Calvin cycle CSLO6: AN 31. A specific poison blocks H' transport across the inner membrane of the mitochondria How will this directly affect the...
or the following anatomical structures, which is homologous to the bones in the wing of a bird? Albones in the hind Iimb of a kangaroo C) bony rays in the tail fin of a tlving fish B) chitinous struts in the wing of a batterfly D) bones in the fipper of a whale 25 Which of the following evidence most strongly supports the oommon origin of all life on Earth? All organisms A) require energy B) use essentially the same...
Multiple Choicepoints each) . Ades bond be e ach-arsers wat teen this when as well as a ser h ale (ATP) is a good energy source because of the existence of mine nich and the remainder of the molecule. consider both intramolecular and intermolecular bonds.) e mad-cow disease entity is known as an) cells but is not composed of cells and contains either RNA O Between the terminal a) rose roup b) amino roup e) adenosine d) phosphate group ma...
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