MYTUTOR SUBJECT ANSWERS

314 views

What is homeostasis?

Homeostasis is defined as the maintenance of a constant internal environment in the body. 

An example of this would be the blood glucose level:

After a meal, a person's blood glucose level would be high. This stimulates the beta cells of the islets of Langerhans in the pancreas to secrete insulin, an enzyme that converts glucose to glycogen to be stored in the liver. This then reduces the blood glucose level back to the norm. 

On the other hand, when a person's blood glucose level is low, such as after exercising, the alpha cells of the islets of Langerhans secrete glucagon, an enzyme that is responsible for converting glycogen to glucose and releasing it into the bloodstream, in order to increase the blood glucose level. 

This is an example of negative feedback (an important regulatory mechanism in the body). 

Lauren S. GCSE Biology tutor, A Level Biology tutor, GCSE Chemistry t...

1 year ago

Answered by Lauren, a GCSE Biology tutor with MyTutor

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

185 SUBJECT SPECIALISTS

£18 /hr

Ross N.

Degree: Medicine (Bachelors) - Exeter University

Subjects offered: Biology, Maths+ 2 more

Biology
Maths
Chemistry
.UKCAT.

“About Me: I'm Ross and I'm a Medical Student at the University of Exeter. I strongly believe that science + maths are incredibly interesting and fun subjects when you understand them - I intend to help you do just that. I am a high e...”

£18 /hr

Eleni N.

Degree: Chemistry (Masters) - Edinburgh University

Subjects offered: Biology, Physics+ 2 more

Biology
Physics
Maths
Chemistry

“About Me: I am a Chemistry student at the University of Edinburgh, but I didn't always start out on this path. I spent my first two years at university persuing a  Biochemistry degree and I took every opportunity to do more science sub...”

£18 /hr

Elisha J.

Degree: Health Care Science (Audioloigy) (Bachelors) - Manchester University

Subjects offered: Biology, Science+ 4 more

Biology
Science
Maths
English
Business Studies
-Personal Statements-

“My background Having gained 9A*’s and 3A’s at GCSE and AAB at A level I am now a second-year Audiology student at one of the best Universities of the world! What is Audiology you might be asking? it’s basically all about ears, that’s ...”

MyTutor guarantee

About the author

£18 /hr

Lauren S.

Degree: BSc Biomedical Sciences (Bachelors) - University College London University

Subjects offered: Biology, Maths+ 3 more

Biology
Maths
German
Chemistry
-Personal Statements-

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

MyTutor guarantee

You may also like...

Other GCSE Biology questions

How can bacteria become resistant to antibiotics and how can doctors reduce the number of bacteria that become resistant?

How do white blood cells protect the body?

Why do we vaccinate people - how does it work?

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

View GCSE Biology tutors

Cookies:

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

mtw:mercury1:status:ok