RNA and Protein Synthesis

Ribose and deoxyribose are classified as

• proteins

• enzymes

• 5 carbon sugars

• nitrogen bases

Tags

NGSS.HS-LS1-6

The entire molecule shown in the diagram above is called a(n)

• amino acid

• nucleotide

• polysaccharide

• pyrimidine

Suppose all the ribosomes in a cell were destroyed. How would this most likely affect the process of gene expression?

• the DNA double strand would be unable to separate

• the cell would be unable to form mRNA strands

• the amino acids could not be joined to form a protein

• the tRNA molecules would bind to the wrong amino acids

A gene specifies a protein that is to be secreted by the cell. Which sequence traces the path of the protein through the cell?

• golgi apparatus → vesicle → rough ER → vesicle

• rough ER → vesicle → golgi apparatus → vesicle

• smooth ER → rough ER → vesicle → golgi apparatus

• free ribosome → rough ER → vesicle → golgi apparatus

Which DNA sequence produces an mRNA strand with the sequence GUCAUG?

• TCATGT

• GUACAG

• CAGTAC

• UCAGUGU

Where does transcription occur in the cell?

• In the nucleus

• In the cytoplasm

• in the ribosomes

• in the golgi apparatus

Which statement correctly describes translation?

• translation controls gene expression in cells

• translation occurs in eukaryotes but not in prokaryotes

• translation transfers information from DNA to mRNA

• translation produces a polypeptide using information in mRNA

Which organelle is NOT involved in the synthesis and secretion of a protein from the cell?

• rough ER

• smooth ER

• golgi apparatus

• plasma membrane

A codon is UAC, what is the anticodon?

• TTT

• AUG

• AUT

• TAC

A scientist wants to make a change to a genetic code that will lead to the removal of one amino acid from the sequence of a protein. Which genetic material should the scientist remove?

• three genes

• three alleles

• three nucleotides

• three chromosomes

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2