Enzymes (Lowersixth science biology new)

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Test your knowledge on enzymes!

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Enzymes (Lowersixth science biology new)


Froggy Jumps Enzymes (Lowersixth science biology new)Online version Test your knowledge on enzymes! by YAKILI LMS 1 What are enzymes? a Lipids that store energy b Proteins that speed up chemical reactions c Carbohydrates that provide structure 2 How do enzymes affect chemical reactions? a They stop reactions from happening b They increase activation energy c They lower activation energy 3 Which of these is a classification of enzymes? a Insulins b Hemoglobins c Amylases 4 What is the main function of enzymes in the body? a To store genetic information b To transport oxygen c To facilitate biochemical reactions 5 Which type of enzyme breaks down starch? a Amylase b Lipase c Protease 6 What is the classification of enzymes based on? a Their color b The type of reaction they catalyze c Their size 7 Which enzyme class includes those that break down fats? a Amylases b Proteases c Lipases 8 What is the role of enzymes in digestion? a To speed up breakdown of food molecules b To absorb nutrients c To produce hormones 9 Are enzymes specific to certain reactions? a Yes, they are highly specific b No, they work on all reactions c They only work in plants 10 Which enzyme class includes those that break down proteins? a Proteases b Lipases c Amylases 11 What is the systematic name of an enzyme? a A name based on its color b A name describing the enzyme's function c A random name 12 What does the recommended name of an enzyme indicate? a The enzyme's main function b Its location in the cell c Its chemical structure 13 Which suffix is commonly used in enzyme names? a -in b -ol c -ase 14 What is an example of a systematic enzyme name? a Lactose 1,4-galactosylhydrolase b Lactose enzyme c Lactose sugar 15 Why are enzyme names important? a They are decorative b They are used for branding c They help identify enzyme functions 16 What is the recommended name for the enzyme that breaks down starch? a Amylase b Lipase c Protease 17 Which enzyme name is systematic? a Starchase b Amylase c Alpha-amylase 18 What does the systematic name of an enzyme often include? a Size of enzyme b Substrate and type of reaction c Color of enzyme 19 What is the recommended name for enzymes that digest proteins? a Lipases b Proteases c Carbohydrases 20 Which of the following is a recommended enzyme name? a Lipidase b Lipase c Lipido 21 What do enzymes do to chemical reactions? a Stop them b Speed them up c Slow them down 22 Are enzymes specific to certain reactions? a No, they are not specific b Sometimes they are c Yes, they are specific 23 Do enzymes get used up in reactions? a No, they are reusable b Yes, they are used up c Sometimes they are 24 Are enzymes affected by temperature? a Only cold temperatures affect them b Yes, high temperatures can denature them c No, temperature has no effect 25 What is the shape of an enzyme's active site? a Specific to its substrate b Always circular c Random 26 Do enzymes work best within a certain pH range? a Yes, they have an optimal pH b They work best in acidic conditions only c No, pH doesn't matter 27 Are enzymes proteins? a They are carbohydrates b Yes, they are proteins c No, they are lipids 28 Can enzymes be affected by inhibitors? a No, inhibitors have no effect b Yes, inhibitors can block their activity c Inhibitors only speed up enzymes 29 Do enzymes work in all living organisms? a Yes, they are found in all living organisms b Only in plants c No, only in animals 30 Are enzymes specific to their substrates? a Yes, they are highly specific b No, they can act on any substrate c Sometimes they are 31 What do enzymes do to chemical reactions? a They speed them up b They stop them c They slow them down 32 What is the energy needed to start a reaction called? a Potential energy b Activation energy c Kinetic energy 33 How do enzymes affect activation energy? a They do not change it b They increase it c They lower it 34 What is enzyme specificity? a Enzymes are non-specific b Enzymes catalyze all reactions c Enzymes only catalyze specific reactions 35 Which term describes the energy of a reaction at its highest point? a Total energy b Potential energy c Free energy of activation 36 What type of molecules are enzymes? a Carbohydrates b Proteins c Lipids 37 Why are enzymes important in biology? a They speed up vital reactions b They store energy c They slow down reactions 38 What does enzyme specificity depend on? a The shape of the active site b The enzyme's size c The reaction temperature 39 What is the effect of enzymes on the energy barrier? a They have no effect b They lower it c They raise it 40 Which factor can influence enzyme activity? a Color b Shape of the enzyme c Temperature 41 What does the lock and key model describe? a Enzymes change shape to fit substrates b Enzymes and substrates fit perfectly c Substrates are unrelated to enzymes 42 In the induced fit model, how do enzymes and substrates interact? a Enzymes have a fixed shape b Enzymes change shape to fit substrates c Substrates do not bind to enzymes 43 Which model suggests enzymes are specific to substrates? a Lock and key model b Induced fit model c Both models equally suggest specificity 44 Which model involves enzyme flexibility? a Neither model involves flexibility b Induced fit model c Lock and key model 45 What is the main difference between the two models? a Both models show enzymes do not change shape b Lock and key shows a perfect fit; induced fit involves shape change c Lock and key involves enzyme flexibility 46 Which model is more widely accepted today? a Neither model is accepted b Lock and key model c Induced fit model 47 What does the lock and key model emphasize? a Substrate flexibility b Specificity of enzyme and substrate fit c Enzyme shape change 48 In the induced fit model, what happens when the substrate binds? a The enzyme remains rigid b The enzyme changes shape c The substrate dissolves 49 Which model explains enzyme action as a perfect match? a Induced fit model b Lock and key model c Both models 50 Why is the induced fit model considered more accurate? a It shows enzymes do not change shape b It accounts for enzyme flexibility during binding c It ignores enzyme specificity

Enzymes (Lowersixth science biology new)

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Enzymes (Lowersixth science biology new)Online version

by YAKILI LMS

What are enzymes?

How do enzymes affect chemical reactions?

Which of these is a classification of enzymes?

What is the main function of enzymes in the body?

Which type of enzyme breaks down starch?

What is the classification of enzymes based on?

Which enzyme class includes those that break down fats?

What is the role of enzymes in digestion?

Are enzymes specific to certain reactions?

Which enzyme class includes those that break down proteins?

What is the systematic name of an enzyme?

What does the recommended name of an enzyme indicate?

Which suffix is commonly used in enzyme names?

What is an example of a systematic enzyme name?

Why are enzyme names important?

What is the recommended name for the enzyme that breaks down starch?

Which enzyme name is systematic?

What does the systematic name of an enzyme often include?

What is the recommended name for enzymes that digest proteins?

Which of the following is a recommended enzyme name?

What do enzymes do to chemical reactions?

Are enzymes specific to certain reactions?

Do enzymes get used up in reactions?

Are enzymes affected by temperature?

What is the shape of an enzyme's active site?

Do enzymes work best within a certain pH range?

Are enzymes proteins?

Can enzymes be affected by inhibitors?

Do enzymes work in all living organisms?

Are enzymes specific to their substrates?

What do enzymes do to chemical reactions?

What is the energy needed to start a reaction called?

How do enzymes affect activation energy?

What is enzyme specificity?

Which term describes the energy of a reaction at its highest point?

What type of molecules are enzymes?

Why are enzymes important in biology?

What does enzyme specificity depend on?

What is the effect of enzymes on the energy barrier?

Which factor can influence enzyme activity?

What does the lock and key model describe?

In the induced fit model, how do enzymes and substrates interact?

Which model suggests enzymes are specific to substrates?

Which model involves enzyme flexibility?

What is the main difference between the two models?

Which model is more widely accepted today?

What does the lock and key model emphasize?

In the induced fit model, what happens when the substrate binds?

Which model explains enzyme action as a perfect match?

Why is the induced fit model considered more accurate?