If you were describing to a class of nursing students how the polio vaccine, which contains inactivated virus, works
A. introduce antibodies into a person.
B. create immunological memory without causing disease.
C. introduce synthetic drugs, like sulfa drugs, into a person.
D. give a person a mild disease.
E. stimulate the production of blood platelets.
B. create immunological memory without causing disease.
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The root-shoot axis of plants
A. is determined by the orientation of the first zygotic cell division. B. is determined by sunlight, as roots grow away from the sun and shoot grow towards the sun. C. is determined by three axes. D. develops in segments. E. None of these are correct.
Pain from an internal organ is known as ____
a. referenced pain b. phantom pain c. somatic pain d. dermatomes e. visceral pain
The alkylating agent nitrosoguanidine adds methyl groups to nucleotide bases and is repaired by which enzyme that removes the added methyl group and restores nucleotides to their normal form?
What will be an ideal response?
Which of the following options correctly lists the varieties of life in the order that they appear in the geologic record, from earliest to most recent?
A) reptiles, land arthropods, plants and fungi on land, flowering plants B) land arthropods, plants and fungi on land, flowering plants, reptiles C) plants and fungi on land, land arthropods, reptiles, flowering plants D) plants and fungi on land, land arthropods, flowering plants, reptiles