MYTUTOR SUBJECT ANSWERS

548 views

What is an enzyme?

An enzyme is known as a biological catalyst. This is because they can speed up reactions by providing an alternative pathway, lowering the activation energy of the reaction. They are normally composed of a protein and a non protein (co-factor). The enzyme has an active site, where the substrate/reactant binds. Enzymes are substrate specific; you can think of this like a "Lock and Key". Only a certain substrate can bind to the active site, just as only a certain key can fit into a lock. Enzymes can be denatured ( their shape changes and the active site no longer works as it it also a different shape) by changing the pH or the temperature of where you find the enzyme.

Liam M. A Level Chemistry tutor, A Level Biology tutor, GCSE Biology ...

1 year ago

Answered by Liam, a GCSE Biology tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

272 SUBJECT SPECIALISTS

£18 /hr

Darragh C.

Degree: Biomedical Sciences (Neuroscience) (Bachelors) - Edinburgh University

Subjects offered:Biology, Chemistry+ 1 more

Biology
Chemistry
-Personal Statements-

“About me:I study neuroscience at Edinburgh University, and have previously studied Chemistry at University College Dublin. Understanding more about the world around me has always been something I'm passionate about, and science has ...”

MyTutor guarantee

£18 /hr

Dominika N.

Degree: Biotechnology (Bachelors) - Imperial College London University

Subjects offered:Biology, Maths

Biology
Maths

“Approachable and flexible tutor - Biotechnology student at Imperial College London”

£20 /hr

Wisdom O.

Degree: Medicine, MBBS iBsc (Bachelors) - University College London University

Subjects offered:Biology, Maths+ 5 more

Biology
Maths
German
Chemistry
-Personal Statements-
-Oxbridge Preparation-
-Medical School Preparation-

“ABOUT ME   I'm a first year medical student at University College London. I really enjoy sciences and languages and I work hard to convey my passion and interest in these subjects to those I tutor.  I am very friendly and tutoring my ...”

About the author

Liam M.

Currently unavailable: until 01/06/2016

Degree: Pharmacy (Masters) - Bath University

Subjects offered:Biology, Chemistry

Biology
Chemistry

“I am a Pharmacy student at the University of Bath. I am crazy for science and I hope my passion can help you to succeed while enjoying learning.The tutor sessions will be personalised for you. What you don't understand or what you ne...”

MyTutor guarantee

You may also like...

Posts by Liam

What is a mole?

What is a mutation and what are the consequences of one?

What is an enzyme?

What is the difference between a nucleophile and an electrophile?

Other GCSE Biology questions

How do different factors affect the rate of photosynthesis and transpiration in plants?

Describe the structure of DNA and where it is found inside a human cell

What are hormones and how do they differ from nerve cells (neurons)

Why do energy and biomass decrease at successive stages of the foodchain?

View GCSE Biology tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok