Respuesta :
Answer:
capillaries help the blood containing the things a cell needs
Explanation:
Cells are the structural and functional unit of life, which carries out vital functions for the survival of organisms.
The answers to the following questions are:
1. Capillaries are small blood vessels and are only one red-blood-cell thick. These blood vessels are involved in the direct exchange of gases and nutrients at the tissues and cellular level.
2. Red blood cells are the primary component of the blood. It consists of a protein, known as hemoglobin, which carries the atmospheric oxygen to the lungs and also circulates to different parts of the body.
Thus, the correct answers are capillaries and red blood cells.
To know more about the transport of oxygen, refer to the following link:
https://brainly.com/question/15592713
