All of the following are true except? A. Nucleotides are the building blocks of proteins, B. A gene is a segment of DNA that codes for proteins which make your traits.
C. During transcription, adenine pairs with uracil instead of thymine on mRNA.
D. Splicing removes exons from premRNA.

answer; ///i believe the answer your looking for is (ribosomes);

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!