What structure is responsible for selecting and transporting only properly processed eukaryotic mRNAs into the cytoplasm?
A. ribosomes
B. spliceosome
C. snRNPs
D. nuclear pore complex
E. RNA polymerase
Ans: D. nuclear pore complex
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Choose from the following terms to fill in the blanks in the correct order
A. ligand B. signaling cell C. receptor D. responding cell In communication between cells, the _____________________ produces the signaling molecule, also known as the ________________; the ______________________ produces the _______________, to which the signaling molecule binds. A. B, A, D, C B. A, B, C, D C. B, C, A, D D. D, C, B, A
Experiments on the feeding preferences of newborn garter snakes born to coastal vs. inland California revealed that
even in the same species, differential instinctive responses can be ____.
a. learned b. genetic c. forgotten d. homozygous e. sex-linked
Regarding the dominant theory of inheritance
before Mendel’s theory, which of the following is the closest analogy to “genes”?
a. mixed paints b. building blocks c. tied ropes d. a pearl necklace e. an electrical wire
Some members of the alphaproteobacteria produce a structure called a (filament/prostheca/pilus) to produce extra surface area for nutrient absorption
What will be an ideal response?