Author Question: An estimate of the energy needs of a 70-kg man who is critically ill would be ____ kcalories. A) ... (Read 78 times)

beccaep · **on:** Aug 21, 2018

An estimate of the energy needs of a 70-kg man who is critically ill would be ____ kcalories.
A) 1050 to 1400
B) 1750 to 2100
C) 2450 to 2800
D) 3150 to 3500

Question 2

Outline the process of protein synthesis, beginning with DNA and ending with a completed protein strand.

vkodali · **Reply #1 on:** Aug 21, 2018

Answer to Question 1

B

Answer to Question 2

The DNA in the nucleus of a cell serves as a template for mRNA. The mRNA, which is almost an exact copy of the DNA, is then transported to the cytoplasm or rough endoplasmic reticulum and attaches itself to a ribosome to serve as template for protein synthesis. Once the ribosome and mRNA are joined, a tRNA, charged with specific amino acids, will bind to the mRNA/ribosomal complex in a sequence specific manner dictated by the mRNA sequence. The next loaded tRNA will then bind to the mRNA/ribosomal complex, and an enzyme joins the two amino acids together. The tRNA will be released to go reload with another amino acid, and the process will continue with another loaded tRNA. When the polypeptide chain is complete, the polypeptide chain and ribosome separate and the protein can then be further processed and folded into its final shape.