Sam came home from school with a cold caused by a virus and his sister, Ana, caught it from him. Sam got well and went back to s
chool. A few days before Ana got well, Sam came down with a cold again. Their mother said that Ana had given the cold back to Sam. How likely is it that their mother is correct, and what does it mean for Ana's chances of getting sick again? A. If Sam only had a mild infection of the virus he might not have acquired immunity to it and could catch it again, as could Ana if she had a mild infection.
B. Sam could not get sick with the same virus again since he has acquired immunity to it, so he must have a different virus which Ana could catch.
C. If Sam's body did not store up enough antibodies to the virus he could get sick with it again, as could Ana if the same thing happened to her.
D. Sam could have picked up another virus at school as well as catching the same one from Ana again, so Ana could get sick again with either virus.
Your question: Sam came home from school with a cold caused by a virus and his sister, Ana, caught it from him. Sam got well and went back to school. A few days before Ana got well, Sam came down with a cold again. Their mother said that Ana had given the cold back to Sam. How likely is it that their mother is correct, and what does it mean for Ana's chances of getting sick again?
Your answer: Acquired immunity, he must have picked picked up a different disease virus so Ana can get sick again. The answer is option A. Hope this helps~
If Sam only had a mild infection of the virus he might not have acquired immunity to it and could catch it again, as could Ana if she had a mild infection.
Dr. Brantz wants to test the part of the brain which is active while lying. For this purpose, he will need to make use of the fMRI (functional magnetic resonance imaging) technique. This technique is used for measuring the brain activity by the means of the detecting changes in the blood flow. The neural activation affects the cerebral blood flow, and this change can be noticed using fMRI.
If you are operating your powerboat near a shoreline, what's important for you to do if you want to help prevent erosion is maintain wake speed to avoid swerving in a counter-clockwise direction. This means that you will run the boat at the slowest possible speed if you want to avoid erosion of soil on the shoreline.
