Biology, 21.11.2019 23:31, gabrielmartinsotr4yl
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?
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.
Answers: 1
Biology, 22.06.2019 09:30, mckeeshallea400
Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.
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Biology, 22.06.2019 15:30, angelrenee2000
The diagram below represents a chloroplast found in a typical plant cell. which of the following processes occurs inside this structure? question 8 options: a oxygen is produced b sunlight is trapped c glucose is produced d all of the above.
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Biology, 22.06.2019 17:30, jsdhhddb8445
What are some of the immune functions of the lymphatic system? a. cleaning red blood cells from the blood and creating lymph fluids b. transporting lymph to the tissues and creating lymph fluids c. removing infectious agents and making white blood cells d. making red blood cells and removing infectious agents
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Sam came home from school with a cold caused by a virus and his sister, ana, caught it from him. sam...
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