What are the reactants in a lactase catalyzed reaction?
With the aid of the enzyme, lactase, the substrate, lactose, is broken down into two products, glucose and galactose….Enzymes and Reaction Rates.
| Enzyme | Substrate | Products |
|---|---|---|
| Lactase | Lactose | Glucose and galactose |
| Catalase | Hydrogen peroxide (H2O2) | Water (H2O) and oxygen (O2) |
What are the reactants of enzyme catalyzed reactions?
The reactants of enzyme-catalyzed reactions are known as substrates. For example, the enzyme carbonic anhydrase converts the substrates carbon dioxide and water into carbonic acid (H2CO3). The substrates bind to a site on the enzyme called the active site.
What are the reactants for photosynthesis reactants?
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
What enzyme catalyzes photosynthesis?
rubisco
RuBP oxygenase-carboxylase (rubisco), a key enzyme in photosynthesis, is the molecular equivalent of a good friend with a bad habit.
Is lactase and lactose a reactant?
Technically, lactase isn’t a required reactant in the hydrolysis reaction of lactose. That is to say, under the right conditions, lactose breaks down in water even if there isn’t lactase present.
Are enzymes reactants?
Like other catalysts, enzymes are not reactants in the reactions they control. They help the reactants interact but are not used up in the reactions. Instead, they may be used over and over again. Unlike other catalysts, enzymes are usually highly specific for particular chemical reactions.
What is catalyzed and uncatalyzed?
The uncatalyzed reaction proceeds via a one-step mechanism (one transition state observed), whereas the catalyzed reaction follows a two-step mechanism (two transition states observed) with a notably lesser activation energy.
What is the site of catalysis in enzymes?
the active site
The part of the enzyme where the substrate binds is called the active site (since that’s where the catalytic “action” happens). A substrate enters the active site of the enzyme. This forms the enzyme-substrate complex.
Where are the reactants in photosynthesis?
During photosynthesis, light energy converts carbon dioxide and water (the reactants) into glucose and oxygen (the products).
What are the reactants in respiration?
Carbon dioxide + Water Glucose (sugar) + Oxygen CO2 + H2O C6H12O6 + 6O2 Cellular respiration or aerobic respiration is a series of chemical reactions which begin with the reactants of sugar in the presence of oxygen to produce carbon dioxide and water as waste products.
What reaction is RuBisCO catalyze?
photosynthetic CO2 reduction reaction
Rubisco catalyses the primary photosynthetic CO2 reduction reaction, the fixation of atmospheric CO2 to ribulose-1,5-bisphosphate (RuBP) to form two molecules of 3-phosphoglycerate (3PGA), which is subsequently used to build the organic molecules of life.
Does photorespiration use NADPH?
Although it appears that photorespiration could be a wasteful process, photorespiration could serve as an important energy sink (n · τ–1) through its consumption of ATP and NADPH thus preventing the over-reduction of the PQ pool when leaf intercellular CO2 concentrations are limiting.