GCSE Biology- When yogurt is being made how does the change in pH help to preserve the yogurt?

The bacteria used in making yoghurt are Lactobacillus bacteria. Milk contains a sugar called lactose. The bacteria are able to break this down to form lactic acid. The lactic acid both lowers the pH of the yoghurt, which to preserve it, and helps denatures milk proteins, which gives the yoghurt its sharp taste.

Siara Jones

9.9k students helped

Biology Tutor

What is Q&A on Scoodle?

At Scoodle we understand that everyone learns in a different way. Some people learn through practice, using essays and notes; others prefer video lessons to watch and learn, some just need help with a specifically hard question, while some learn best 1-on-1 tutoring sessions. At Scoodle we cater for all types of learning styles and needs. From GCSE Maths video lessons to A-level English essays and specialist educators in every subject - we’ve got you covered.

Scoodle has helped over 131,000 students so far

5 Biology tutors available now

Verified

Suzana Arefin

Pro

Im passionate about teaching Science and Maths!

I have 6 years of experience working as a tutor. I provide one-to-one and group tuitions on a range of subjects.

£20Per hour

27Students helped

Verified

Faiyaz Khan

Online lessons

Experienced tutor and Graduate from the LSE

Worked as part of the University teaching Excel to students and staff. Experience in teaching A-level Extensive experience as business analyst for fintech companies, currently run own entrepreneurial ventures

£15Per hour

Verified

Kate Mackay

Online lessons

Dedicated tutor and undergraduate at Institute of Education, UCL

With 12 years experience in teaching I know my subjects well. I have taught GCSE Science and A-level Biology with a variety of exam boards meaning I am confident in what I deliver. I have a middle management role in my school so I know all about the curriculum and how to best to deliver my subjects. When I am not teaching I love photography and walking. I often combine both taking my camera and capturing what I see.

£35Per hour

107Students helped

Verified

Talisa Farmer

Online lessons

I am an enthusiastic science teacher with years of experience tutoring 1:1 and in the classroom.

£25Per hour

Verified

Charlotte Cheung

Online lessons

Enthusiastic science and maths tutor

I am a second-year native Chinese student from Hong Kong, studying Biochemistry at Imperial College London and predicted a first-class degree. Studied in the UK since year 9, achieved 4 A*s at A-level and 12 A*s at GCSEs.

£20Per hour