Protein Synthesis

Which molecules are involved in protein synthesis?

• transfer RNA, introns, and mutagens
• messenger RNA, introns, and ribosomal RNA
• ribosomal RNA, transfer RNA, and mutagens
• messenger RNA, ribosomal RNA, and transfer RNA

One difference between a gene mutation and a chromosomal mutation is that

• A gene mutation affects the DNA of more genes than a chromosomal mutation.
• A gene mutation can involve a insertion or deletion, but cannot result in a frameshift.
• A chromosomal mutation can change the number of chromosomes in a cell. 
• A chromosomal mutation is more likely to be passed on to offspring or daughter cells.

Tags

NGSS.HS-LS3-2

Most mutations 

• have no effect on an organism.
• are fatal to an organism.
• are helpful to an organism.
• are harmful to an organism.

Tags

NGSS.HS-LS3-2

The decoding of mRNA to form a polypeptide chain is

• translation.
• replication.
• transcription.
• reproduction.

This diagram can be used to specify amino acid sequences in polypeptides. Which sequence of the genetic code would produce a polypeptide with the amino acid sequence Ala-Arg-Pro? 

• GCAAGACCU
• GACCUGCUC
• GCCAGUCCG
• ACGGCGUCC

The diagram shows DNA translation.What process is represented by the number 1?

• Synthesis of an mRNA molecule
• Transfer of amino acids to the ribosome
• Release of tRNA from mRNA
• Protein synthesis

In mRNA, a three-base group that corresponds to a single amino acid is called

• an allele.
• a codon.
• an extron.
• an intron.

The central dogma of molecular biology is that

• information is transferred from RNA to protein to DNA.
• information is transferred from protein to RNA to DNA.
• information is transferred from DNA to RNA to protein.
• information is transferred from RNA is DNA to protein.

Tags

NGSS.HS-LS1-1

Which of the changes in word pairs below is analogous to the change that occurred between the normal chromosome and mutant 1 in the diagram?

• Plant ---->Planter
• Tarp--->Trap
• Supper--->Super
• Filer--->Filler

Tags

NGSS.HS-LS3-1

In the chart, which amino acid is specified by the mRNA code CCC?

• Gly
• Lys
• Ala
• Pro

Tags

NGSS.HS-LS1-1