Water, proteins, and ions as well as waste such as co2. It is often a straw color and it makes up about 50-60% of the total blood volume
four gametes are produced for every original cell
The exchange of gases between the lungs and the blood is known as exterior respiration. The correct option among all the options that are given in the question is option "C".
Exterior respiration is
actually the process in which the exchange of gases between the alveoli’s of
the lungs and the blood take place. The blood actually carries oxygen from the
lungs and gives out the carbon dioxide to the lungs. This is a continuous
process and is required for the survival of human beings.
Answer:
The lids of the Petri dishes were inadvertently left on while being sterilized
Explanation:
- The process of eliminating any microbe from a particular object to achieve a sterile aseptic environment is termed as sterilization.
- Sterilization mainly aims to either remove, kill or make any microbe inactive by using various means such as irradiation, heat, pressure, etc.
- In the given question radiation is used to sterilize the Petri dishes and thus, if sterilization is successful there should not be any contamination.
- However, since there is contamination present amongst the bacterial colonies growing on agar plated in the Petri dishes this shows that the sterilization has not been done successfully and a possible reason for this could be that while sterilizing the<em> lids of the Petri dishes were kept on. </em>