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How did meselson and stahl produce bacterial cells containing only DNA made with nitrogen 15?
Meselson and Stahl used a technique called density gradient centrifugation to produce bacterial cells containing only nitrogen-15 (N-15) DNA. They grew E. coli bacteria in a medium containing N-15, allowing the bacteria to incorporate this heavy isotope into their DNA. After several generations, they then switched the bacteria to a medium with regular nitrogen (N-14) and allowed them to replicate. By centrifuging the DNA, they could separate and analyze the densities of the DNA strands, confirming the semi-conservative nature of DNA replication.
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What do Denitrifying bacteria produce?
Denitrifying bacteria produce nitrogen gas (N2) from nitrate (NO3-) or nitrite (NO2-). This process helps return nitrogen to the atmosphere in the form of N2, completing the nitrogen cycle.
What is nitrogen shuttle?
a molecule that carries Nitrogen and can Donate the Nitrogen towards building of other molecules like proteins or DNA. An important Nitrogen Shuttle is Glutamine. It can produce Ammonium, be a source of energy and have other functions too.
What nutrient in plants helps to make flowers?
potash - NOT nitrogen - nitrogen tends to produce leaves
Will the reaction of oxygen with nitrogen produce an ionic compound or a molecular compound?
Nitrogen oxides are not ionic compounds.
How can large quantities of protein be produced from a bacterial colony containing the gene of interest?
Large quantities of protein can be produced by expressing the gene of interest in a bacterial colony such as E. coli. This is typically achieved by cloning the gene into a plasmid, transforming the plasmid into the bacterial cells, and inducing protein expression. The bacterial colony can then be grown in a culture medium optimized for protein production to maximize yields.
What are the physiologically active nitrogen containing compound produce by plants?
Alkaloids
Why does the liver produce urea?
Urea serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals.
What is the decomposition of nitrogen containing molecules into ammonia?
The decomposition of nitrogen-containing molecules into ammonia involves breaking the bonds within the nitrogen-containing molecule and forming new bonds to produce ammonia (NH3). This process typically requires high temperatures and/or catalysts to facilitate the reaction.
What do nitrogen containing gases dissolve in vapor on the atmosphere produce?
Nitrogen containing gases dissolved in vapor in the atmosphere can produce compounds such as nitrogen dioxide (NO2) and nitric acid (HNO3), which contribute to air pollution and acid rain. These compounds can have harmful effects on human health, vegetation, and ecosystems.
One nitrogen molecule reacts with three hydrogen molecules to produce two ammonia molecules each containing one nitrogen and three hydrogen atoms?
The balanced equation for this reaction is: N2 + 3H2 -> 2NH3. During the reaction, one nitrogen molecule (N2) reacts with three hydrogen molecules (H2) to produce two ammonia molecules (NH3), each containing one nitrogen and three hydrogen atoms.
Bacterial diseases produce ulcers on the skin?
bacterial diseases produce ulcers on the skin
What bacterial diseases produce ulcers on skin?
bacterial diseases produce ulcers on the skin
What cell wastes containing nitrogen are produced when cells break down?
Cells produce ammonia and urea as waste products containing nitrogen when they break down proteins. These waste products are subsequently excreted by the body through processes such as urination and sweating.
What rids the body of nitrogen-containing wastes?
The urinary system rids the body of nitrogen containing wastes. The kidneys filter the wastes from the bloodstream and produce urine which then travels through the rest of the urinary system to be eliminated from the body.
Which human activity has probably contributed most to the acidification of lakes in the Adirondack region?
burning fossil fuels that produce air pollutants containing sulfur and nitrogen
What do bacteria do in nitrogen fixation?
Bacteria in nitrogen fixation convert atmospheric nitrogen into a form that plants can use, such as ammonia. This process is essential for plants to produce proteins and grow. Some bacteria form symbiotic relationships with plants, like legumes, to efficiently fix nitrogen in the soil.
Why does liver produce urea?
Urea serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals.
