![subject](/tpl/images/cats/biologiya.png)
Biology, 18.01.2020 02:31 alisa1600000
Smallpox is a disease caused by a specific virus, while the common cold can be caused by over 100 different viruses. explain why it is possible to develop a vaccine to prevent smallpox, but it is difficult to develop a vaccine to prevent the common cold. in your answer be sure to: • identify the substance in a vaccine that makes the vaccine effective • explain the relationship between a vaccine and white blood cell activity • explain why the response of the immune system to a vaccine is specific • state one reason why it would be difficult to develop a vaccine to be used against the common cold?
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Biology
![image](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 16:30, lucylubugg
Which of these is not a function of some membrane proteins ? a. allowing polar molecules to enter the cell b. recognizing other types of cells c. receiving messeges from other cells b. carrying messages to oher cells
Answers: 2
![image](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 03:00, do1213
Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 2
![image](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 19:00, harmonywilliams30
What is the next step in muscle contraction after the actin changes shape
Answers: 2
![image](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 19:10, rosenatalie222
Which statement does lola need to correct, and why? a) statement 1 because spiral galaxies do not havearmsb) statement 2 because the bulges contain mostlyyoung red stars. c) statement 3 because the arms are made of mostlyyoung blue and blue-white stars. d) statement 4 because spirals galaxies contain littleto no dust.(c)
Answers: 1
You know the right answer?
Smallpox is a disease caused by a specific virus, while the common cold can be caused by over 100 di...
Questions in other subjects:
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/es.png)
Spanish, 18.03.2020 01:21
![Konu](/tpl/images/cats/biologiya.png)
Biology, 18.03.2020 01:21
![Konu](/tpl/images/cats/mat.png)
Mathematics, 18.03.2020 01:21
![Konu](/tpl/images/cats/mat.png)
Mathematics, 18.03.2020 01:21
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 18.03.2020 01:21
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 18.03.2020 01:21