As an adult who never developed chickenpox infection as a child, you elect to receive the protective vaccine against this pathogen at the age of 35. This vaccine will stimulate
A. latency.
B. an anamnestic response.
C. a secondary immune response.
D. a primary immune response.
Answer: D
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Molecules made primarily of carbon and hydrogen are called hydrocarbons. In each of the following hydrocarbons, indicate how many hydrogen atoms are present: 12, 10, 8, or 6
A chain of five carbons joined to each other by single covalent bonds A chain of five carbon atoms with one double bond and the rest single bonds A chain of five carbon atoms with two double bonds and two single bonds A five-carbon molecule with four of the carbons linked by a single covalent bond, and with the fifth carbon attached by a single bond as a branch to the second carbon in the chain A ring of six carbon atoms held together by alternating single and double bonds
In humans, there are _______ autosomal linkage groups, plus an X and Y chromosome linkage group
A. 23 B. 46 C. 22 D. 92
Which of the following groups of animals does NOT exhibit a "double circulation" and four-chambered hearts?
A. mammals B. birds C. crocodilians D. snakes E. All of the groups listed exhibit a complete double circulation.
The story of plant evolution could be described as a story of how plants broke their dependence on aquatic existence. Explain how you could support this statement
What will be an ideal response?