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Donald Russell

Medical Student

Total answers29 questions answered
Total hoursUnder 5 hours taught
Total resourcesUnder 3 resources

Donald provided

Email address
Β£34per
hour

Hi, I'm Donald

Looking to help some keen students to achieve their dreams by supplementing their work. I have tutored in the past so have plenty of experience in teaching students of different calibres. I use a more individual approach to students to cater to their learning abilities and needs to ensure they get the most out of the teaching.

My availability

7am - 12pm
12pm - 4pm
4pm - 10pm
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My answers

Asked by Kafi

Applying for Medicine πŸ‘©β€βš•οΈ
Good resources to revise bmat ?
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Donald Russell

Medical Student

BMAT Past Papers with worked Solutions by Someii Desai and Rohan Aggarwal (August 2015) Get Into Medical School: 700 BMAT Practice Questions by ...Learn more

Asked by James

Biology 🌱
What role does the skin play in proper calcium absorption from the digestive tract?
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Donald Russell

Medical Student

Skin is the main source of vitamin D. Vitamin D helps in calcium absorption from the digestive tract.

Asked by Max

Chemistry βš›οΈ
How is energy stored in a cell?
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Donald Russell

Medical Student

This is energy stored within chemical bonds of ATP (Energy currency). ATP is an abrupt source of chemical energy stored within glucose molecules in ...Learn more

Asked by Liam

Biology 🌱
What are the periods of life on earth broken into?
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Donald Russell

Medical Student

The geological history of the earth is studied by dividing it in aeons, then further dividing aeons into eras, an era in periods, a period in epochs...Learn more

Asked by Max

Biology 🌱
Describe the biochemical mechanism through which HCl is formed in the stomach(in humans) (?)?
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Donald Russell

Medical Student

Hydrochloric acid is produced by the parietal cells in the stomach. These cells secrete about 60 mL HCl per hour at a concentration of roughly 0...Learn more

Asked by Richard

Biology 🌱
How does the sodium-potassium pump work?
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Donald Russell

Medical Student

The process of moving sodium and potassium ions across the cell membrane is an active transport process involving the hydrolysis of ATP to provide t...Learn more

Asked by Tim

Biology 🌱
Which of the following is a characteristic of a virus?
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Donald Russell

Medical Student

They are enclosed in a protective envelope. They have spikes, which helps them to attach to the host cell. They are non-cellular. They do not res...Learn more

Asked by Tim

Biology 🌱
What type of acid is in synovial fluid?
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Donald Russell

Medical Student

Synovial fluid is made of hyaluronic acid and lubricin, proteinases, and collagenases

Asked by Micheal

Biology 🌱
How have scientists changed their mind about Darwin's theory of natural selection?
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Donald Russell

Medical Student

Darwin's theory of natural selection is still the dominant theory for how life evolved on Earth over millions of years. However, recent developments...Learn more

Asked by Alexandra

Biology 🌱
How do we know the gender of a baby turtle?
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Donald Russell

Medical Student

Turtles have no external genitalia - this makes determining their gender more difficult than with other animals. You can check out this resource...Learn more

Asked by Liam

Biology 🌱
What are the names of the tissue layers of the stomach?
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Donald Russell

Medical Student

The stomach has multiple layers which allow for maximal absorption of nutrients from food. The layers of the stomach consist of (starting from the...Learn more

Asked by Max

Biology 🌱
How is Lucy, the A. Afarensis, evidence of evolution?
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Donald Russell

Medical Student

Lucy was regarded as the oldest known direct ancestor of humans. Lucy is estimated to be 3 million years old. The fossil evidence discovered in 1...Learn more

Asked by Jeniffer

Biology 🌱
What is a portal system? What is the purpose of the hepatic portal?
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Donald Russell

Medical Student

Portal system is a system of blood vessels that begins and ends in capillaries. Hepatic portal carries nutrients from digestion to the liver to stor...Learn more

Asked by James

Biology 🌱
Why should humans save endangered animals from extinction?
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Donald Russell

Medical Student

When a species becomes endangered, it is a sign that the ecosystem is slowly falling apart. Each species that is lost triggers the loss of other spe...Learn more

Asked by Jeniffer

Biology 🌱
What does it mean to be ticklish?
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Donald Russell

Medical Student

Sensitive to being tickled.

Asked by James

Biology 🌱
I got this project for school, and one of the largest questions are: Why can you faint if you stand still for too long? I don't really know how to formulate myself in that sense... so if you we're able to explain - it would be a massive help?
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Donald Russell

Medical Student

If you stand for too long, the veins in your legs may dilate (open up) and causing pooling of blood in the legs. This means that blood is diverted t...Learn more

Asked by Tim

Biology 🌱
How does gene regulation differ in prokaryotes and eukaryotes?
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Donald Russell

Medical Student

In prokaryotes, transcription and translation occur simultaneously in the cytoplasm, whilst regulation occurs at the transcriptional level. In eu...Learn more

Asked by James

Biology 🌱
What are sources of variation for evolution?
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Donald Russell

Medical Student

The main methods of variation are: mutation, random mating between organisms, random fertilisation, crossing over (or recombination) between chromat...Learn more

Asked by Tim

Biology 🌱
How does your anatomy change during pregnancy?
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Donald Russell

Medical Student

Changes in breast: tissue proliferation leads to growth in size, there is darkening of areola region. Change in the vertebral column: Lumbar curv...Learn more

Asked by Sarah

Biology 🌱
Are platelets, proteins, and vitamin K all required for haemostasis?
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Donald Russell

Medical Student

Haemostasis is basically the process by which blood is stopped flowing (usually after a wound). Platelets form the platelet plug and is the main...Learn more

Asked by Sarah

Biology 🌱
How does stomach cancer relate to the cell cycle?
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Donald Russell

Medical Student

When stomach cells become cancerous and divide rapidly, it is most likely a cell cycle issue. During the cell cycle, "checkpoints" exist to ensur...Learn more

Asked by Sarah

Biology 🌱
How is the release of anterior pituitary hormones regulated?
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Donald Russell

Medical Student

The release of hormones from the anterior pituitary gland is generally controlled by hormones from the hypothalamus. The hypophyseal-anterior pit...Learn more

Asked by Max

Biology 🌱
What is the difference between allopatric speciation and sympatric speciation?
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Donald Russell

Medical Student

Allopatric speciation occurs when two species are living in separate environments and therefore there is no gene flow between the populations. S...Learn more

Asked by Max

Biology 🌱
What is the difference between mitosis and binary fission?
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Donald Russell

Medical Student

Binary fission is a method of asexual reproduction which single-celled organisms, usually prokaryotes, use to create a copy of themselves. Binar...Learn more

Asked by James

Biology 🌱
What is convergent evolution? May we include a fossil to describe convergent evolution?
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Donald Russell

Medical Student

Convergent evolution is the process in which organisms that are not closely related independently evolve similar features. Adaptions may take the fo...Learn more

Asked by James

Biology 🌱
How does the fossil record support the theory of continental drift?
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Donald Russell

Medical Student

The possibility that mainland float has occurred came up basically in light of the investigation of fossils found from various corners of the eart...Learn more

Asked by Paige

Biology 🌱
How do you make a baby?
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Donald Russell

Medical Student

For ladies, a potential pregnancy starts in the ovaries, those two almond-formed organs appended to either side of the uterus. (See outline undern...Learn more

Asked by Ammaar

Biology 🌱
Why do you have sex?
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Donald Russell

Medical Student

Physical reasons: Delight, stretch alleviation, work out, sexual interest, or appreciation for a man. Objective based reasons: To influence an infan...Learn more

Asked by Lauren

Applying for Medicine πŸ‘©β€βš•οΈ
How to prepare for BMAT? When should I start preparing for BMAT?
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Donald Russell

Medical Student

In general, students spent around a month preparing for the BMAT, BMAT prep took slightly longer because I had to go through the GCSE science stu...Learn more