Harry J. A Level Biology tutor, A Level Chemistry tutor, GCSE Maths t...

Harry J.

Currently unavailable: for regular students

Degree: Biological Sciences (Bachelors) - Durham University

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About me

Hi there, I'm Harry and I'm currently studying biology at Durham University. I absolutely love science and can't wait to share and hopefully generate enthusiasm in the sciences in those still at school. During my time as Head Science Prefect at school I helped to run the mentoring scheme where students aided the younger years with their scientific studies and so I know that there can often be challenges when it comes to tutoring, but I hope that through a variety of methods, from diagrams to videos to exam questions, I'll be able to help you achieve the best you can!

I'll ensure to tailor each tutorial to the student through what exam board they're on to what particular subject they struggle with most. I know science can be difficult, but in our 55 minute sessions I hope that both your understanding and enjoyment of your course the will increase.

I look forward to meeting you!

Subjects offered

SubjectLevelMy prices
Biology A Level £20 /hr
Chemistry A Level £20 /hr
Maths GCSE £18 /hr

Qualifications

QualificationLevelGrade
MathsA-LevelA*
Further MathsA-LevelA*
BiologyA-LevelA*
ChemistryA-LevelA
Disclosure and Barring Service

CRB/DBS Standard

No

CRB/DBS Enhanced

No

Currently unavailable: for regular students

Questions Harry has answered

What are the different stages of mitosis and what do they consist of?

Mitosis can be grouped into four main stages: prophase, metaphase, anaphase and telophase. Prophase: the chromosomes supercondense, the nuclear envelope disintegrates and the centrioles migrate to the poles of the cell. Metaphase: the chromosomes line up at the equator of the cell, moved by ...

Mitosis can be grouped into four main stages: prophase, metaphase, anaphase and telophase.

Prophase: the chromosomes supercondense, the nuclear envelope disintegrates and the centrioles migrate to the poles of the cell.

Metaphase: the chromosomes line up at the equator of the cell, moved by spindle fibres (which are attached to the centromeres) from the centrioles.

Anaphase: the chromosomes are split at the centromeres and one half of each is pulled one pole, and the other to the other.

Telophase: the cell membrane constricts around the middle of the cell and the nuclear envelopes begin to appear around the chromosomes. Eventually the cell splits in two, forming two identical daughter cells with n genetic material.

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2 years ago

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What's the difference between the light dependent and independent reactions?

These two sets of reactions are very different yet equally important in the process of photosynthesis. The light dependent reactions consist of chlorophyll molecules absorbing a photon (hence light dependent) that causes electrons in the molecule to be raised to a higher energy level and pass...

These two sets of reactions are very different yet equally important in the process of photosynthesis.

The light dependent reactions consist of chlorophyll molecules absorbing a photon (hence light dependent) that causes electrons in the molecule to be raised to a higher energy level and pass down the electron transport chain, which makes energy available to produce ATP. The loss of electrons causes the splitting of water (known as photolysis) into 2H+, 1/2 Oand electrons, which replace those lost by the chlorophyll. The electrons that flowed through the electron transport chain combine with the hydrogen ions from water and NADP to form NADPH + H+. These reactions occur on the thylakoid membranes.

The light independent reactions consist of the Calvin cycle where CO2 is fixed by combining with RuBP to form 2GP, and then uses the products of the light dependent reactions to form GALP, which can be converted into many different products.

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2 years ago

331 views
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