Examen
Biology CCEA AS Level 1.2 (Enzymes) 2024/2025 already graded A+
- Grado
- Institución
Biology CCEA AS Level 1.2 (Enzymes) 2024/2025 already graded A+
[Mostrar más]Vista previa 1 fuera de 3 páginas
Vista previa 1 fuera de 3 páginas
Añadir al carrito
Añadir al carrito
Vendedor
Seguir
Ashley96
Comentarios recibidos
Vista previa del contenido
Biology CCEA AS Level 1.2 (Enzymes)What are enzymes? - ANSGlobular proteins that act as catalysts inside living organisms
What does a catalyst do? - ANSAlters the rate of a chemical reaction without undergoing
permanent changes itself
What is activation energy? - ANSThe minimum amount of energy needed to start a reaction
What is an exothermic reaction? - ANSOne in which heat is given out
What do enzymes do to activation energy? - ANSThey reduce it
What is the structure of an enzyme? - ANS- Proteins with a tertiary structure
What is the active site? - ANSThe region of an enzyme where the substrate fits
What are enzyme break down reactions known as? - ANSCatabolic reactions
What are enzyme build up reactions known as? - ANSAnabolic reactions
What are the two models of enzyme action? - ANS- The lock and key model
- The induced fit model
What is the lock and key model? - ANSEnzymes are specific to the substrate they bind too.
What is the induced fit model? - ANSThe active site molds around the substrate to form the
enzyme-substrate complex.
What are cofactors? - ANSNon-protein substances that enzymes require in order to function
What are conenzymes? - ANSNon-protein organic molecules necessary for enzyme action
which are not permanently attached to the enzyme
How does temperature affect enzyme activity? - ANSAs temperature increases up to the
optimum the molecules gain more kinetic energy so move faster and more enzyme-substrate
complexes are formed and rate or reaction increases but once optimum temperature has been
exceeded the enzyme molecule vibrate so much that the H bonds holding the tertiary structure
together break and the active size changes shape, meaning the enzyme has become denatured
How does pH affect enzyme activity? - ANSEach enzyme has an optimum pH. Changing pH
alters the charges on the amino acids in the active site of the enzyme meaning the substrate
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Ashley96. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
45,681 summaries were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now