The oldest mammals were large, dinosaur-like creatures that flourished over 600 million years ago.
Answer the following statement true (T) or false (F)
False
The oldest mammals were small creatures found in fossil beds about 200 million years ago.
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Nacho suffers from terrible migraine headaches. He enters a clinical trial to test whether certain single nucleotide polymorphisms (SNPs) are associated with response to one drug but not another. This is an approach called
A) gene therapy. B) pharmacogenetics. C) genetic determinism. D) applied pharmacology.
Why is the poly-A tail added to mRNA before it leaves the nucleus?
a. It provides a destination for movement in the cell. b. It protects against exonuclease activity. c. It notifies the cell that this molecule is “self.” d. It provides the final instructions for protein synthesis.
These molecules can directly convert extracellular signals into intracellular signals.
A. G proteins B. Adapter proteins C. Scaffolds D. Second messengers E. Membrane receptors
The chemistry of living organisms is called _____________ chemistry.
A. general B. organic C. inorganic D. biological