Answer:
This demonstrate the transforming principle.
Explanation:
Griffith performed the experiment on the virulent bacteria and non- virulent bacteria. The non- virulent bacteria produce rough colonies and did not cause pneumonia. The virulent bacteria produces smooth colonies that kill the mice and caused pneumonia.
When Griffith mixed the on virulent bacteria and heat killed virulent bacteria he found that the mice were killed. He concluded that there was transforming principle that turns the non- virulent bacteria into virulent bacteria from the heat killed bacteria. Something, has been transferred from the heat killed bacteria to the non- virulent bacteria. Later, he found that dead mice blood sample contained both the non-virulent rough bacteria strains and virulent smooth strains of bacteria.
I think its reproductive cells like egg or sperm
Memory B cells are produced
To determine if the cardiovascular system is becoming more fit as a result of fitness program, the resting heart rate should be going slower. Cardiovascular system is the system of the body that allows the circulation and transportation of nutrients, oxygen, hormones, carbon dioxide through out the body. It includes the blood vessels, the lungs, the heart and the blood.
