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How many substrate molecules does a typical enzyme act on per second?
A single enzyme molecule can act on about 1000 substrate molecules per second.
How many hinge areas are present on a myosin molecule?
Myosin molecules have two hinge regions: one at the N-terminal end of the molecule and a second one closer to the center. These hinge regions allow myosin to undergo conformational changes as it interacts with actin filaments during muscle contraction.
What is the turnover number for catalase?
The turnover number for catalase is extremely high. One molecule of catalase can easily convert 400 million molecules of hydrogen peroxide to H2O.
If a strand of DNA underwent four rounds of replication what percentage of the total DNA present would be comprised of the original DNA molecule?
DNA is doubled stranded / / (original). | = replicated. First round of replication, the DNA splits and the replicated DNA is made up of the original and new DNA. One strand produces 2 stands. / | | / One round, the percentage of original DNA would be 50%. (2 strands out of 4) Second round you get..because each stand again produces 2 stands. / | / | | | Third round.. /| /| 4th round.. --> /| --> /| So 2/16 = 1/8 2 of the 16 DNA strands contain original DNA.
What is the order of bases in the second strand of the DNA molecule?
The order of bases in the second strand of a DNA molecule is complementary to the first strand, following the base pairing rules (A with T, C with G). So, if the first strand has the sequence ATCG, the second strand would have the sequence TAGC.
When one DNA molecule is replicated the result is two DNA molecules. What is true of the second DNA molecule?
The second DNA is an exact duplicate of the first. If not the second will not work correctly. We call this a mutation.
When a DNA molecule is replicated is the second molecule almost identical to the first true or false?
True. DNA replication is a process where a DNA molecule is copied to produce an almost identical second molecule. This ensures that the genetic information is faithfully passed on to the next generation of cells.
When energy absorbed by one type of chlorophyll molecule is used to form molecules of ATP electrons from a second kind of chlorophyll molecule are used?
in forming molecules of NADPH
How many substrate molecules does a typical enzyme act on per second?
A single enzyme molecule can act on about 1000 substrate molecules per second.
How fast do enzymes act?
Enzymes reaction cycle is so fast that a single enzyme molecule typically act on about thousand substrate molecules per second.
What effect might a molecule that interferes with the action with carbonic anhydrase have on your body?
The carbon dioxide and water react to form about 600,000 molecules of carbonic acid per second
Why is it only one molecule of N2 needed to produce 2 molecules of NH?
Only one molecule of N2 is needed to produce 2 molecules of NH3 because when the single N2 separates there are 2 single nitrogen atoms. The single nitrogen atom reacts with 3 H2 molecules, borrowing 3 hydrogen atoms to create a single NH3 molecule. The remaining nitrogen atom bonds with the 3 remaining hydrogen atoms to make the second NH3.
What happens to the second oxygen atom in 2H2 plus O2 equals 2H2O?
it goes to the other formed water molecule, there are 2 oxygen atoms in 2 molecules of water
What is the difference between first messenger and second messenger?
The first messenger is nothing but referred to the molecule that brings information upto the cell surface. Once this molecule transfers signal to cell, it is taken over by the well known second messenger to take it further to nucleus through various other signaling molecules down the cascade.
Why do water molecules form a lattice structure?
Water is H2O. The hydrogen molecule has 1 electron and it needs to fill the first shell. Oxygen has a complete first shell and six electrons in the second. The second shell needs eight to be complete. So a bond of two hydrogen atoms and one oxygen molecule is very stable. The way the two elements combine has the oxygen molecule in the middle and the two hydrogen atoms in a tetrahedral pattern.
How is the name of the second element in a covalent molecule change?
The ending of the second element is changed to -ide
Is silica dioxide quartz an organic molecule?
No. It is neither organic nor a molecule. Silicon dioxide consists only of silicon and oxygen. By definition, an organic compound must contain carbon. Second, silicon dioxide forms a covalent network rather than molecules.
