Answer: Option D
Antigen is a given substance that stimulates a specific immune system.
Explanation:
Antigen is a substance that can stimulate an immune response by activating lymphocytes (white blood cells) which acts as body defence against infections. Antigen is divided into two which are,
1. Foreign antigen or heteroantigen which is a foreign substance that stimulates immune response.
2. Autoantigen self antigen is a substance in the body that stimulates immune response.
The answer is <span> b) chromosomes replicate
DNA replication occurs before mitosis. So, duplicated chromosomes are already present in mitosis. They are connected by centromeres. During different phases of mitosis, spindles are formed and pull chromosomes toward the opposite poles of the cell so centromeres must split.</span>
Answer:
Log
04/12/2022
myurelschool asked a question10:49Log
04/12/2022
myurelschool asked a question10:49Log
04/12/2022
myurelschool asked a question10:49Log
04/12/2022
myurelschool asked a question10:49Log
04/12/2022
myurelschool asked a question10:49
Explanation:
Answer:
Helpful
Explanation:
Because,They could be a disease fighting machine.
