Choose the correct answer

1- ……. are the basic components of lymph and blood in human body.

A- Proteins B- Carbohydrates C- Lipids D- Nucleic acids

2- Polymers of proteins are composed of monomers called …….

A- Nucleic acids B- Amino acids C- Citric acids D- Uric acid

3- The acidic functional group forming an amino acid is called…….

A- Amine B- Carboxyl C- Hydroxyl D- Phosphate

4- The basic functional group forming an amino acid is called…….

A- Amine B- Carboxyl C- Hydroxyl D- Phosphate

5- Proteins are formed from groups of amino acids linked together by ……. Bond

A- Ionic B- Hydrogen C- Hydrophobic D- Peptide

6- …………. is from simple proteins.

A- Albumin B- Casein C- Thyroxin D- Hemoglobin

7- ……….. is from phosphoproteins.

A- Casein B- Hemoglobin C- Albumin D- Insulin

8- Casein is a protein which contains ……… element

A- Iron B- Iodine C- Phosphorus D- Sulphur

9- Hemoglobin protein contains ……… element

A- Iodine B- Phosphorus C- Sodium D- Iron

10 - Thyroid gland secretes thyroxin hormone, the proteins of thyroxin hormone contain……. element

A- Iodine B- Phosphorus C- Calcium D- Potassium

11- ………. carries the hereditary traits of living organisms.

A- DNA B- RNA C- Amino acid D- Phosphoric acid

12- ……… acid helps in protein synthesis process which cause the appearance of hereditary traits

A- Ribonucleic B- Deoxyribonucleic C- amino D- Sulphuric

Write the scientific term

1- Biological macromolecules whose monomers are called amino acids.

2- A bond between two molecules form when the carboxyl group of an amino acid reacts with the amine group in another one, which releases water molecule (H2O)

3- Two amino acids linked by peptide bond.

4- protein chain formed from many amino acids.

5- They are composed of structural units called nucleotides.

6- A kind of protein found in milk

7- Protein which consist of only amino acids.

8- Proteins which consist of amino acids associated to other elements.

9- Protein found in blood and consists of amino acids bound to iron element

10- The building units of nucleic acids

11- A kind of pentose which forms the nucleotides of RNA

12- A kind of pentose which forms the nucleotides of DNA

13- The nucleic acid which is responsible for transferring hereditary traits through generations.

14- The nucleic acid which takes part in making proteins which are responsible for the hereditary traits and organization of biological processes.

Write short notes about

1- Importance of proteins

2- Importance of DNA

3- Importance of RNA

Choose the correct answer

1- Proteins

2- Amino acids

3- Carboxyl

4- Amine

5- Peptide

6- Albumin

7- Casein

8- Phosphorus

9- Iron

10- Iodine

11- DNA

12- Ribonucleic

Дата добавления: 2015-10-23