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Before Jonas Salk Discovered a Vaccine to Prevent Polio, People

question 6

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Before Jonas Salk discovered a vaccine to prevent polio, people noticed a correlation between outside temperature and the incidence of polio: The warmer the temperature over the course of the year, the more outbreaks of polio.This relationship is an example of a(n) ________ correlation.


Definitions:

MRNA

Messenger RNA, a single-stranded RNA molecule that is complementary to one of the DNA strands of a gene and is responsible for carrying genetic information from DNA to the ribosome where proteins are synthesized.

Codons

Sequences of three nucleotides in mRNA that specify the addition of a specific amino acid to a polypeptide chain during protein synthesis.

Peripheral Protein

Proteins that are attached to the surfaces of cellular membranes, playing roles in signal transduction and cellular communication.

Membrane Channel Protein

Integral membrane proteins forming pores through cellular membranes, allowing selective transport of ions and molecules across membranes, crucial for various physiological processes.

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