Deliberate infection of young children with particles of ground smallpox scabs from children who had survived mild cases of smallpox was known as (vaccination/variolation/immunization).

Fill in the blank(s) with the appropriate word(s).


variolation

Biology & Microbiology

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The nation-state is a(n):

A) independent entity whose territory consists of a city which is not administered as part of another local government. B) international actor having a ruling authority, citizens, and a territory with fixed borders. C) sovereign state which is viewed as comprising of two or more nations. D) sovereign state having a very small population or very small land area, but usually both.

Biology & Microbiology

In this diagram of the heart, which of the

following choices correctly identifies A and B?

a. A is the AV node; B is the cardiac pacemaker. b. A is the SA node; B is the septum. c. A is the AV node; B is the SA node. d. A is the SA node; B is the AV node. e. A is the septum; B is the cardiac pacemaker.

Biology & Microbiology

Which of the following are not found in the testes?

A. Sertoli cells B. spermatozoa C. seminiferous tubules D. interstitial cells E. follicle

Biology & Microbiology

NAD+ is considered a(n) ____

a. enzyme b. coenzyme c. regulatory molecule d. active site e. intermediate

Biology & Microbiology