Connect the terms with their corresponding explanations. The terms are presented in a chronological order - the number before an explanation refers to the chapter where the term is introduced.

Choose the terms from the following list:

1-3. The gene-containing strand inside the cell.
1-3. A structure that consists of cells of the same type.
1-3. The part of the cell that guides its functions.
1-3. A chromosome molecule with a three-letter abbreviation.
1-3. A device that can be used to study cells.

4. An internal supporting structure that consists of vertebrae.
4. An element that is plentiful in bones.
4. A structure that connects two different bones together.
4. The hard surface part of a tooth.

5. An element required by muscle cells to function correctly.
5. A muscle that pumps blood into the body.
5. An involuntary type of muscle cell.
5. The muscle that makes our arms bend.

6. An energy-rich compound found in sugar and vegetables.
6. An energy-rich compound found in meat and beans.
6. An amylase-containing substance that is secreted in our mouth when eating.
6. A part of the digestive located between the throat and the stomach.
6. A substance secreted by the liver, used to break down fats.
6. The part of the digestive tract where the broken-down nutrients are absorbed.
6. The part of the digestive tract where water is absorbed.

7. A toxic gas that is released during exhalation.
7. A breathing muscle located below the lungs.
7. The small, ball-shaped part of the lung where gas exchange takes place.

8. The type of blood cell that transports oxygen.
8. A molecule that transports oxygen.
8. The type of blood cell that kills pathogens.
8. The type of blood cell that takes part in blood coagulation.
8. The blood type that can be transfused for all patients.

9. The largest artery, which begins at the heart's left atrium.
9. The part of the heart that receives blood from all other parts of the body. ?
9. A blood vessel that transports blood to the heart from other parts of the body.
9. A blood vessel that transports blood from the heart to the lungs.
9. A blood vessel that brings blood and oxygen to the surface of the heart itself.
9. A blood vessel that transports liquid from the space between the cells to the bloodstream.
9. A type of blood vessel that is located between veins and cells.

If you got over 30 points, you have learned the last few chapters well.
If you got under 15 points, you should revise the last few chapters and try again.