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- Multiple ChoicePlease save your changes before editing any questions.
How do enzymes speed up chemical reaction?
Increasing activation energy
Decreasing activation energy
Increasing deactivation energy
Decreasing deactivation energy
- Multiple ChoicePlease save your changes before editing any questions.What is a substance called if it speeds up a chemical reaction?reusablecatalystspecificfragile
- Multiple ChoicePlease save your changes before editing any questions.Each enzyme only has 1 substrate that will fit its active site. What is this called?reusablilitydenaturationspecificityfragility
- Multiple ChoicePlease save your changes before editing any questions.With what 3 letters do enzymes typically end?-ose-ase-ese-tic
- Multiple ChoicePlease save your changes before editing any questions.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?Enzymes increase the energy of the reactants.Enzymes decrease the energy level of the products.Enzyme decrease the activation energy of the reaction.Enzymes reverse the direction of the reaction. - Multiple ChoicePlease save your changes before editing any questions.Which of the following conclusions can be drawn from this graph?The optimum pH of the enzyme is 6.6.The optimum pH of the enzyme is 5.8The enzyme’s activity increases as pH increases 5.0 to 9.0The enzyme’s activity is greater around pH of 8.0 .
- Multiple ChoicePlease save your changes before editing any questions.Any substance that is acted upon by an enzyme is called a(n)?CoenzymeSubstrateVitaminPolypeptide
- Multiple ChoicePlease save your changes before editing any questions.Based on the graph, what is the optimal temperature for this enzyme?15oC40oC30oC35oC
- Multiple ChoicePlease save your changes before editing any questions.In the diagram, what is letter A?productsubstrateenzyme-substrate complexactive site
- Multiple ChoicePlease save your changes before editing any questions.Enzymes are...nucleic acidsproteinslipidscarbohydrates
- Multiple ChoicePlease save your changes before editing any questions.An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?truefalse
- Multiple ChoicePlease save your changes before editing any questions.
What is the function of an enzyme?
Enzymes break themselves into small pieces.
Enzymes slow down chemical reactions.
Enzymes speed up chemical reactions.
Enzymes combine products to form reactants.
- Multiple ChoicePlease save your changes before editing any questions.
What happens when enzymes are heated to a high temperature?
The enzymes die.
The shapes of the enzymes are altered.
The enzymes' amino acid sequence changes.
The enzymes remain the same.
- Multiple ChoicePlease save your changes before editing any questions.Which of these is NOT true?Enzymes can denature (change shape) when the temperature gets too high.Enzymes can only be used once in a chemical reaction.Extreme pH can denature enzymes.Enzymes speed up chemical reactions.
- Multiple ChoicePlease save your changes before editing any questions.
Which of these is most likely an enzyme?
Sucrose
Galactose
Fructose
Helicase
- Multiple ChoicePlease save your changes before editing any questions.Which is NOT true?Enzymes speed up chemical reactions.Enzymes react best at a specific temperature.Enzymes only control ONE type of reaction.Enzymes are made of fatty acids.
- Multiple ChoicePlease save your changes before editing any questions.What is another name for enzymes?chemical catalystsmicroorganismsbiological catalystsinorganic catalysts
- Multiple ChoicePlease save your changes before editing any questions.Babies do not have well developed digestive systems for breaking down proteins; therefore baby food is prepared after treatment with which enzyme?proteaselipasecarbohydrasesynthase
- Multiple ChoicePlease save your changes before editing any questions.The pH at which an enzyme is most efficient is called the _________ pH of an enzyme.neutraloptimumminimumexperimental
- Multiple ChoicePlease save your changes before editing any questions.The current model of enzyme action is referred to as the...Induced Fit ModelLock & Key ModelSinger-Nicolson ModelDavson-Danielli Model
- Multiple ChoicePlease save your changes before editing any questions.Enzymes speed up reaction rates by changing...Activation EnergypHHydrogen BondsKinetic Energy
- Multiple ChoicePlease save your changes before editing any questions.Letter D...active siteenzymesubstrateproducts
- Multiple ChoicePlease save your changes before editing any questions.Letter B...active siteenzymesubstrateproducts
- Multiple ChoicePlease save your changes before editing any questions.Letter C...active siteenzymessubstrateproducts
- Multiple ChoicePlease save your changes before editing any questions.Letter E...active siteenzymesubstrateproducts
- Multiple ChoicePlease save your changes before editing any questions.What factors affect an enzyme's reaction rate?temperaturepHsubstrate concentrationall of these
- Multiple ChoicePlease save your changes before editing any questions.
Which of these is most likely an enzyme?
Sucrose
Saccharide
Fructose
Amylase
- Multiple ChoicePlease save your changes before editing any questions.The graph shows the effect of temperature on enzyme action. What characteristic do enzymes E1, E2, and E3 share?Their activity increases between 20°C and 30°C.Their activity is greatest between 5°C and 10°C.Their activity is at a low level between 15°C and 25°C.Their activity is at a high level between 30°C and 40°C.
- Multiple ChoicePlease save your changes before editing any questions.
What is the optimal pH of enzyme A?
8
2
5.7-10
10
- Multiple ChoicePlease save your changes before editing any questions.What is the pH range of enzyme A?20-3.73.70
- Multiple ChoicePlease save your changes before editing any questions.What is indicated by letter A?enzymeproductsubstrateactive site