Which of the following apply to the concept of synthesizing proteins. Select all that apply. The instructions for proteins are found within the nucleic acid DNA.
Amino acids link together and release a water molecule in a condensation reaction.
Proteins are composed of long chains of amino acids polymerized together.
The amino acids become bonded side by side by a peptide link.
Polymerization of amino acids requires an enzyme to catalyze the reaction.

The instructions for proteins are found within the nucleic acid DNA.

Explanation:

The genetic material, DNA, contains information for the synthesis of functional products called PROTEIN. These information, however, needs to be expressed via the processes of transcription and translation.

In the transcription process, an mRNA is produced from the instructions contained in the DNA. The mRNA is then read three nucleotides at a time during translation. Each group of three nucleotides are called CODON, each specifying an amino acid. The amino acids are linked together during the translation process in a condensation reaction by a peptide bond.

Protein synthesis is the expression of the instructions contained in the DNA of living cells.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.