Urease

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Urease quiz on structure and function

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Maria

Argentina

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Urease


UreaseVersión en línea Urease quiz on structure and function por Maria 1 What type of enzyme is urease? a Oxidase b Ligase c Hydrolase d Transferase 2 What is the substrate of urease? a Urea b Ammonia c Carbon dioxide d Water 3 Which products are formed when urease acts on urea? a Nitrogen and oxygen b Ammonia and carbon dioxide c Glucose and oxygen d Water and hydrogen 4 Why is the active site important? a It stores products. b It gives the enzyme its color. c It transports enzymes around the cell. d It is where the substrate binds and the reaction occurs. 5 What metal ion is found in the active site of urease? a Iron b Nickel c Calcium d Magnesium 6 How does increasing temperature affect urease activity? a Activity increases until the optimum temperature is reached. b Activity always decreases. c Temperature has no effect. d Activity immediately stops. 7 What is the approximate optimum temperature for many ureases? a Around 20°C b Around 80°C c Around 10°C d Around 60°C 8 What is the optimum pH generally around for urease? a around 2–3 b around 7–8 c around 9–10 d around 4–5 9 Why does Helicobacter pylori produce urease? a To digest proteins. b To produce oxygen. c To neutralize stomach acid and survive. d To reproduce faster. 10 Which is a real-world application of urease? a Plastic manufacturing only b Fertilizer management and medical diagnostics c Producing electricity d DNA replication 11 Why do organisms need urease? a Urease stores nitrogen in seeds b Urease is only a structural protein c Urease breaks down glucose for energy d Urease recycles nitrogen from proteins during germination and allows soil microorganisms to convert animal waste into ammonia that plants can use for growth. 12 True or False? Urease is found only in bacteria. a True b False 13 True or False? Urease contains nickel ions. a True b False 14 True or False? Extreme pH can denature urease. a True b False 15 True or False? Urease was the first enzyme ever crystallized. a True b False

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Urease

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UreaseVersión en línea

por Maria

What type of enzyme is urease?

What is the substrate of urease?

Which products are formed when urease acts on urea?

Why is the active site important?

What metal ion is found in the active site of urease?

How does increasing temperature affect urease activity?

What is the approximate optimum temperature for many ureases?

What is the optimum pH generally around for urease?

Why does Helicobacter pylori produce urease?

Which is a real-world application of urease?

Why do organisms need urease?

True or False? Urease is found only in bacteria.

True or False? Urease contains nickel ions.

True or False? Extreme pH can denature urease.

True or False? Urease was the first enzyme ever crystallized.