Answer:
b, c and d
Explanation:
Allosteric enzymes are enzymes whose activity is changed by the binding of a molecule at a site other than the active site. The molecule bonded is
called allosteric effector
Allosteric enzymes possess multiple subunits and show sigmoidal ‘S’ shape curve for rate of reaction (V0) and substrate concentration [S].
Kinetics of allosteric enzymes cannot ne studied by Michaelis- Menten relationship as their activities are affected by variation in the concentration. So, they show interconversion between a more active form and a less active form.
Therefore, the correct options are b, c and d.
b. They may have binding sites for regulatory molecules that are separate from active sites.
c. They tend to have a sigmoidal (S shaped) curve of V 0 vs. [S].
d. They interconvert between a more active form and a less active form.
(A) <span>will typically increase the amount of erosion in an area </span>
An object that is not already moving will begin to move in the direction of the larger force. An object that is already moving will change its speed and/or its direction.
A base generally releases a hydroxide ion (OH-) when dissolved in water.
There are exceptions, such as ammonia NH3, which acts as a base but does not produce OH- ions. There are three definitions of acids and bases (Arrhenius, Bronsted-Lowry, and Lewis) and each one looks at acid/base characteristics differently. OH- donation is the Arrhenius definition.
Answer:
<em>From a balanced chemical equation the relationships </em><u>of the amount of reactants and products, either as number of units (moles) or as mass (grams), </u><em>can be determined. </em>
Explanation:
Since reactants combine in a fixed ratio to form a fixed amount of products, the law of mass conservation permits to state cuantitative relationships between the amounts of rectants and products, and this is represented through a balanced chemical equation.
The balanced chemical equation represents the reactants and products using the chemical composition of each substance (consisting of chemical symbols and subscritps) and shows the relations in which they react or are produced using numbers as coefficients.
For example:
- <em>Balanced chemical equation:</em> 1CH₄(g+ 2O₂(g) → 1CO₂(g) + 2H₂O(g)
1 molecule CH₄ : 2 molecules O₂ : 1 molecule CO₂ : 2 molecules H₂O
1 mole CH₄ : 2 moles O₂ : 1 mole CO₂ : 2 moles H₂O
16.04 g CH₄ : 64.00 g O₂ : 44.01 g CO₂ : 36.03 g H₂O
(80.04 g reactants = 80.04 g products)