Автор: Иманахметова Жанар
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Biology assignments for the first term 9 grade
Unit name: 9.1А Biological molecules (molecular biology)
Unit name: 9.1B Digestion (Nutrition)
Unit name: 9.1C Excretion
Unit name: 9.1D Respiration
Вырезка из документа:
Unit name: 9.1А Biological molecules (molecular biology)
Glossary
| Term | Description |
| Polymer | macro molecules formed by union of monomers |
| Monomer | atoms or small molecules that bond together to form more complex structures such as polymers |
| Proteins | large biomolecules and macromolecules that comprise one or more long chains of amino acid residues |
| Amino acids | molecules used by all living things to make proteins |
| Fats | nutrients in food that the body uses to build cell membranes, nerve tissue (including the brain), and hormones |
| Fatty acids | the building blocks of the fat in our bodies and in the food we eat |
| Nucleic acids | large biomolecules that play essential roles in all cells and viruses |
| Nucleotides | organic molecules composed of a nitrogenous base, a pentose sugar, and a phosphate |
| Carbohydrates | a biomolecule consisting of carbon, hydrogen and oxygen atoms, usually with a hydrogen–oxygen atom ratio of 2:1 |
| Monosaccharides | the simplest carbohydrates that cannot be broken down by hydrolysis into smaller carbohydrate molecules |
| Polysaccharides | long chains of carbohydrate molecules, composed of several smaller monosaccharides |
- Essentially, monomers are the building blocks of polymers, which are more complex type of molecules. Match polymers with monomers.
| 1 Protein
2 Carbohydrate 3 Lipid 4 Nucleic acid |
A glycerol
B amino acid C monosaccharide D nucleotides E fatty acid |
Answer: 1______, 2______, 3 ______, 4_______.
- Complete the table about the structure of proteins.
| Example | Example of use in animals | Example of use in plants | |
| Monosaccharides | |||
| Disaccharides | |||
| Polysaccharides |
- Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells. Describe the functions of proteins in the human body.
1 ____________________________________________________________________________
2 ____________________________________________________________________________
3 ____________________________________________________________________________
- Lipids, also called fats, are organic molecules made of 3 smaller units joined together in a structure called a triglyceride.
| Organic substances | Description | Main use in the body | Found in (3-4) |
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