- •Biochemistry
- •Match the words with their definitions
- •Fill in the gaps with the words from exercise 1.
- •What is biochemistry?
- •Historical Background and Scientific Foundations
- •3. Complete the sentences:
- •4. Find and write out a summarizing (key) sentence for each paragraph.
- •5. Watch “Introduction to Biochemistry” and do the following tasks:
- •Match the words with their definitions.
- •Find the appropriate half to the following expressions:
- •Match the biomolecules to the functions they play in the organism
- •Fill in the gaps with the correct preposition:
Biochemistry
|
tɛkˈniːk |
a substance such as a fat, oil, or wax that dissolves in alcohol but not in water and is an important part of living cells |
|
(ˈprəʊtiːn) |
the simplest unit of a chemical substance, usually a group of two or more atoms |
|
(ˈlaɪpɪd; ˈlɪpɪd) |
one of the many substances found in food such as meat, cheese, fish, or eggs, that is necessary for the body to grow and be strong |
|
(ˌɔːɡəˈnɛl) |
a type of acid that exists in all living cells |
|
(ˈmɒlɪˌkjuːl) |
any structure, such as a nucleus or a chloroplast, that has a particular purpose inside a living cell |
|
(njuːˈkliːɪk; -ˈkleɪ-) |
The basic method for making or doing something, such as an artistic work or scientific procedure |
|
(ˌkɑːbəʊˈhaɪdreɪt) |
one of several substances, such as sugar or starch, that provide the body with energy, or foods containing these substances |
Match the words with their definitions
Fill in the gaps with the words from exercise 1.
A … is a biological molecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with a hydrogen–oxygen atom ratio of 2:1 (as in water); in other words, with the empirical formulaCm(H2O)n (where m could be different from n).
… are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.
A … is an electrically neutral group of two or more atoms held together by chemical bonds.
… are biopolymers, or large biomolecules, essential to all known forms of life.
In biology, … is a loosely defined term for substances of biological origin that are soluble in nonpolar solvents.
In cell biology, an … is a specialized subunit within a cell that has a specific function.
…the body of specialized procedures and methods used in any specific field, esp. in an area of applied science.
What is biochemistry?
Biochemistry is the study of the basic molecules used by living things. Nucleic acids, proteins, lipids (fats), and carbohydrates all perform specific functions within and between cells that allow organisms to survive. Biochemists seek to understand how these substances are formed, what purposes they serve, and how they might be used elsewhere to make medicines or other products.
Biochemistry analyzes the structure and physical properties of biomolecules (those produced by living things) and the systems in which they are used. Many biochemists study a particular class of biomolecule such as pigment-producing compounds or molecules that form membranes and structure within cells. Other areas of study include the many chemicals of cellular energy pathways, hormones, and other regulatory molecules, the synthesis of proteins, and the makeup and function of DNA.