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ValentinkaMS [17]
3 years ago
6

A proposed theory in the history of evolution where prokaryotic cells engulfed aerobic heterotrophic prokaryotes and photosynthe

sis prokaryotes is called?
Biology
1 answer:
serious [3.7K]3 years ago
7 0
This theory is called endosymbiosis. 
Think this is how chloroplasts came into being as well as mitochondria.
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The benefit of measuring the initial rate of a reaction, V0, is that early in the course of the reaction, A) Km is the substrate
aleksandr82 [10.1K]

Answer:

Rate of product formation is linear and [S] has not been lowered significantly.

Explanation:

The rate of enzyme-catalyzed reactions is affected by several factors, the contraction of substrates [S] is one of them. The substrate concentration keeps on changing as the reaction proceeds. This is why the reaction rate is measured at the initial stages of reactions when the substrate concentration [S] is much greater than the concentration of the enzyme. It is called the initial rate or initial velocity.

Under the conditions of higher substrate concentration and relatively much lower enzyme concentrations, only a few molecules of substrates are being converted into product. At a relatively higher substrate concentration, the rate of product formation increases linearly.

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Which of the following is a valid concern about the impact of biotechnology on biodiversity?
Andru [333]
The answer to this is C
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Match the researchers with their discoveries. Demonstrated the phenomenon of transformation, but did not identify the transformi
alexgriva [62]

Answer:1.Oswald Avery. C.M.Maclead, and M.McCarty in 1944. 2.D.Watson and Francis H.C.Crick 3.Friedrich Miescher 4.Charles Yanofsky 5.Oswald Avery, Colin MacLeod and Macclyn McCarty 6.Erwin Chargaff.

Explanation:

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For a science experiment. John gradually added a sedium hydroxide (NaOH) solution to warm vegetable oil in a glass test tube. He
Marrrta [24]

The sodium hydroxide solution and vegetable oil underwent a chemical change.

<h3><u>Explanation:</u></h3>

The reaction between a base and a fat or fatty acid is called as saponification reaction. Here the base dissociates into the cation and hydroxyl ion. The hydrogen from the fatty acid of the oil reacts with the hydroxyl ion to form water which is basically the neutralization reaction. This cation now reacts with the rest of the fatty acid to form a bipolar molecule which is the soap. During the reaction, the solution becomes cloudy but with time, it again goes back to solution. The cloudyness appears because oil isn't soluble in water based solutions and the base is actually made solution in water.

Here the sodium hydroxide reacts with oil to form water and the soap molecule which is a chemical change.

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