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Tiago D.

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Degree: Biological Sciences (Bachelors) - Edinburgh University

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About me

I think Biology is a fascinating subject and I am currently studying Biological Sciences at The University of Edinburgh because I am keen to do research in this area. Having been through IB biology HL myself, I know how challenging it can be to both understand and remember the vast content that is covered. Fortunately, the syllabus is very clear on what you actually need to know and I can help students use it as a tool for more effective learning. I also try to provide as much information as necessary to fully understand challenging concepts. Moreover, I can help students to find links and areas of overlap between topics to reinforce their existing knowledge. I also like to focus on exam skills and past papers to ensure that this sound knowledge is reflected on final grades.

By organising and running a photography club as well as tutoring maths, I developed the ability to tailor my teaching methods to individual students. In our sessions, I will work hard to ensure that students feel comfortable to ask questions and make mistakes as these are fundamental parts of learning.  

Availability: I will generally be available in the afternoon on weekdays and the whole day on Wednesdays. I have some flexibility in my schedule, so please contact me even if this does not suit you. 

Subjects offered

SubjectLevelMy prices
Biology IB £24 /hr
Chemistry IB £24 /hr
-Personal Statements- Mentoring £24 /hr

Qualifications

QualificationLevelGrade
Biology HLBaccalaureate7
Chemistry HLBaccalaureate6
Maths SLBaccalaureate6
Geography HL Baccalaureate7
English Language and Literature SLBaccalaureate7
Portuguese LiteratureBaccalaureate6
Disclosure and Barring Service

CRB/DBS Standard

No

CRB/DBS Enhanced

No

Currently unavailable: for regular students

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Ratings and reviews

5from 2 customer reviews

A (Student) January 19 2015

awesome tutor

Grace (Parent) April 9 2016

Questions Tiago has answered

What is the role of auxin in plant phototropism?

Starting with the basics:  1. Auxin is a plant hormone, so it is a chemical substance involved in regulating the action of certain cells within an organism. 2. Phototropism is the process by which plant grow in response to light. Tropisms are responses to directional external stimuli and here...

Starting with the basics: 

1. Auxin is a plant hormone, so it is a chemical substance involved in regulating the action of certain cells within an organism.

2. Phototropism is the process by which plant grow in response to light. Tropisms are responses to directional external stimuli and here Photo- indicates it is a response to light. 


Now, back to the actual question: 

Auxin increases the flexibility of plant cell walls which are the main factor limiting plant cell growth. As a consequence, plant cells tend to grow faster in the presence of auxin. When a plant senses a directional light stimulus it redistributesits auxin molecules to the side that is further away from the light. As a consequence, the plant cells that are further away from the light experience a greater auxin concentration and grow faster, causing the shoot to bend towards the light. This mechanism allows plants to optimize the amount of light they receive in order to increase photosynthesis rates. 

The figure below summarizes this quite well (note that IAA is simply the type of auxin that regulates phototropism in plants)




Note: Remember that it is NOT the difference in the level of production of auxin amongst plant cells that explains phototropism but the REDISTRIBUTION of existing auxin molecules.

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1 year ago

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