For example, a gene causing baldness would mask the effect of a hair-colour gene. This hormone causes more water to be reabsorbed. The left side of the heart carries oxygenated blood that has returned from the lungs and is pumped to the body. Diffusion The net movement of particles of a gas or a solute from an area of high concentration to an area of low concentration along or down a concentration gradient.
But birds typically have twice the plasma uric acid concentration as humans. Transpiration can pull water up trees metres tall because of the cohesive and adhesive properties of water — water molecules stick to themselves and to the walls of the xylem.
Receptors are often gathered together into sense organs, that have other various structures that help the receptors gain more information.
Denatured Enzymes that are denatured have unfolded protein structures and can no longer catalyse a reaction. Phototropism A tropism growth or movement in response to light.
SOD catalyzes a reaction between two superoxide ions to produce hydrogen peroxide and triplet oxygen. The one nanosecond half-life of the hydroxyl radical indicates that it is so reactive that it reacts with the first molecule it bumps into.
Dr Szeto has been awarded numerous scholarships and prizes for his research and academic endeavours. Genetics and genetic engineering DNA is a genetic code that consists of four bases — adenine, thymine, guanine and cytosine. Consequences of academic dishonesty including plagiarism may result in suspension or expulsion from the University.
Describe the results you would expect from the electrophoresis separation of fragments from the following treatments of the DNA segment above.
Labeled diagrams that are explained in your answer may be useful. The pH difference is small, amounting to only about 0.
Fermenters are used to grow a single type of microbe under carefully controlled conditions. After four generations, the following results were obtained.
Insulin converts excess glucose into glycogen, to be stored in the liver. In aerobic respiration, glucose and oxygen combine to make carbon dioxide and water, and energy.
Ripening of fruits can be slowed down in order to keep them fresh. Translation Synthesis of a protein on an mRNA template. Carbon dioxide diffuses from the blood into the alveoli while oxygen dissolves into the capillaries.
Every three bases code for one amino acid, which join together to make proteins. She has over one year of tutoring experience with international students in Hong Kong. The main waste product is urea, the waste material produced from the breakdown of proteins.
Chloroplasts are found mainly in the palisade layer, and the spongy layer contains air spaces to allow gas exchange. Cloning can be used to save species that are close to extinction. Organisms produce more offspring than the environment can support so only those which are most suited to their environment will survive to breed and pass on their useful characteristics.
Fossil fuels are non-renewable and will eventually run out.In this lesson, you will learn what osteocytes are and why they are important to bone health.
You will discover how osteocytes contribute to. Flashcard Machine - create, study and share online flash cards My Flashcards; Flashcard Library; About; Contribute; Search; Help; Sign In; Create Account.
Explore the structure of chromosomes and see how DNA fits inside the nucleus of the cell. In this lesson, you'll learn about histones, chromatin. Background for understanding and possibly repairing the molecular and biochemical damage known as aging.
Topics Click on the Links for Chapter Objectives, Terms, Outline Frameworks. International Scholars Tuition School (IST) is dedicated to providing the best 11+ Common Entrance Exams (CEE), 13+ Common Entrance Exams (CEE), 13+ Common Academic Scholarship Exams (CASE), Winchester College Entrance Exams, Eton College King’s Scholarship Exams, SSAT (Secondary School Admission Test), ISEE (Independent .Download