Definition of catalase in English:

catalase

noun ˈkatəleɪzˈkatlˌās

mass nounBiochemistry

An enzyme that catalyses the reduction of hydrogen peroxide.
〔生化〕过氧化氢酶
Example sentencesExamples
- The most simple case of such a chemical reaction is the decomposition of hydrogen peroxide in the presence of the enzyme catalase inside the cell.
- In addition, normal cell growth could be restored by addition of catalase to the medium, breaking down the hydrogen peroxide to oxygen and water.
- When the enzyme catalase is added to the hydrogen peroxide solution, the activation energy is lowered even further to 4 kJ / mol.
- Many of these enzymes, such as catalase and glutathione peroxidase, are constitutively active and protect the lungs against everyday insults.
- In addition, the human body produces its own antioxidants that take the form of enzymes, including catalase, glutathione peroxidase, and superoxide dismutase.

Origin

Early 20th century: from catalysis + -ase.

Definition of catalase in US English:

catalase

nounˈkatlˌās

Biochemistry

An enzyme that catalyzes the reduction of hydrogen peroxide.
〔生化〕过氧化氢酶
Example sentencesExamples
- In addition, normal cell growth could be restored by addition of catalase to the medium, breaking down the hydrogen peroxide to oxygen and water.
- Many of these enzymes, such as catalase and glutathione peroxidase, are constitutively active and protect the lungs against everyday insults.
- In addition, the human body produces its own antioxidants that take the form of enzymes, including catalase, glutathione peroxidase, and superoxide dismutase.
- When the enzyme catalase is added to the hydrogen peroxide solution, the activation energy is lowered even further to 4 kJ / mol.
- The most simple case of such a chemical reaction is the decomposition of hydrogen peroxide in the presence of the enzyme catalase inside the cell.

Origin

Early 20th century: from catalysis + -ase.

词汇	catalase
释义	Definition of catalase in English: catalase noun ˈkatəleɪzˈkatlˌās mass nounBiochemistry An enzyme that catalyses the reduction of hydrogen peroxide. 〔生化〕过氧化氢酶 Example sentencesExamples The most simple case of such a chemical reaction is the decomposition of hydrogen peroxide in the presence of the enzyme catalase inside the cell. In addition, normal cell growth could be restored by addition of catalase to the medium, breaking down the hydrogen peroxide to oxygen and water. When the enzyme catalase is added to the hydrogen peroxide solution, the activation energy is lowered even further to 4 kJ / mol. Many of these enzymes, such as catalase and glutathione peroxidase, are constitutively active and protect the lungs against everyday insults. In addition, the human body produces its own antioxidants that take the form of enzymes, including catalase, glutathione peroxidase, and superoxide dismutase. Origin Early 20th century: from catalysis + -ase. Definition of catalase in US English: catalase nounˈkatlˌās Biochemistry An enzyme that catalyzes the reduction of hydrogen peroxide. 〔生化〕过氧化氢酶 Example sentencesExamples In addition, normal cell growth could be restored by addition of catalase to the medium, breaking down the hydrogen peroxide to oxygen and water. Many of these enzymes, such as catalase and glutathione peroxidase, are constitutively active and protect the lungs against everyday insults. In addition, the human body produces its own antioxidants that take the form of enzymes, including catalase, glutathione peroxidase, and superoxide dismutase. When the enzyme catalase is added to the hydrogen peroxide solution, the activation energy is lowered even further to 4 kJ / mol. The most simple case of such a chemical reaction is the decomposition of hydrogen peroxide in the presence of the enzyme catalase inside the cell. Origin Early 20th century: from catalysis + -ase.
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