Question

if the dna reads cgtataccgcgatg

gcatatggcgctac
gcauauggcguac

how does dna differ from rna?

rna can move into the cytoplasm, whereas dna cannot
rna contains the sugar ribose instead of deoxyribose
rna contains the nitrogen base uracil instead of thymine
all the choices are correct
other:

dna complement to gat is: *

cta
tua
cua
tac

Explanation:

Complementary DNA strand

Using the DNA Base Pairing knowledge point

• Given DNA template: CGTATACCGCGATG
• Base pairing rules: C pairs with G, G pairs with C, T pairs with A, A pairs with T.
• Complementary sequence: GCATATGGCGCTAC

Structural differences between DNA and RNA

Using the RNA Structure knowledge point

• Sugar: RNA contains ribose; DNA contains deoxyribose.
• Nitrogenous bases: RNA contains uracil (U) instead of thymine (T).
• Location: RNA can leave the nucleus and enter the cytoplasm, while DNA remains in the nucleus.
• Therefore, all the choices are correct.

Complementary DNA base pairing for a short sequence

Using the DNA Base Pairing knowledge point

• Given DNA sequence: GAT
• Base pairing rules: G pairs with C, A pairs with T, T pairs with A.
• Complementary DNA sequence: CTA

Answer:

Question 1

• (A) GCATATGGCGCTAC (Correct answer)
• (B) GCAUAUGGCGUAC

Question 2

• (A) RNA can move into the cytoplasm, whereas DNA cannot
• (B) RNA contains the sugar ribose instead of deoxyribose
• (C) RNA contains the nitrogen base uracil instead of thymine
• (D) all the choices are correct (Correct answer)
• (E) Other:

Question 3

• (A) CTA (Correct answer)
• (B) TUA
• (C) CUA
• (D) TAC