AP Biology DNA Practice

direction new nucleotides are synthesized on the new strand

• 5^' to 3' (new nucleotides added to the 3' end)

• 3' to 5' (new nucleotides added to the 5' end)

Nitrogenous bases are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds

Which enyzme would be found only on the lagging strand?

• DNA polymerase

• Primase

• Ligase

• Topoisomerase

Which RNA bases would pair with TACGAA in transcription? 

• AUGCUU

• ATGCTT

• GCATCC

• GCAUCC

Which pre-mRNA processing step is important for initiating translation?

• poly-A tail

• RNA editing

• splicing

• 7-methylguanosine cap

The production of mature mRNA in eukaryotes involves

• cutting introns out and spicing exons together

• adding the 5' cap

• adding the 3' poly A tail

• all of these are correct

In the mRNA sequence: AUGUGGAACAGAUAC, what would happen if in the last codon, Guanine was substituted with Cytosine?

• stop codon would be inserted

• frameshift mutation would occur

• stop codon would be removed

• Valine would be substituted for tyrosine

Tags

NGSS.HS-LS3-2

The phase of mitosis in which the sister chromatids separate from each other

• prophase

• metaphase

• anaphase

• telophase

Tags

NGSS.HS-LS1-4

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base

• sugar, oxygen, nitrogen base

• sugar, phosphate, nitrogen base

• sugar, phosphate, protein

A cell in G1 has 10 units of DNA. How many units of DNA should it have in G2?

• 5

• 10

• 15

• 20

• 30

Tags

NGSS.HS-LS1-4