93- Molecular Genetics

What is the complementary mRNA sequence to the DNA sequence A-T-T-G-C-A?

• U-A-A-C-G-T

• T-A-A-C-G-T

• U-A-A-C-G-U

Which of the following do DNA and RNA have in common?

• both contain ribose molecules

• both contain phosphate groups

• both are double stranded

What is produced during transcription?

• amino acids

• DNA molecules

• mRNA molecules

The rRNA is responsible for

• replication

• making renovations

• making up the ribosomes

In eukaryotes, DNA

• floats freely in the cytoplasm.

• is located in the ribosomes.

• is located in the nucleus.

The two strands of DNA in the double helix structure are held together by

• covalent bonds

• hydrogen bonds

• ionic bonds

Which type(s) of RNA is(are) involved in protein synthesis?

• transfer RNA only

• messenger RNA, ribosomal RNA, and transfer RNA

• messenger RNA only

• ribosomal RNA and transfer RNA only

Which of the following is a complementary mRNA molecule? Original DNA strand: A T G - G C G - A A T - G A A - A G T - T T A - T A A

• UAG - GCG - UUA - GUU - UGA - AAU - AUU

• UAC - CGC - UUA - CUU - UCA - AAU - AUU

• TAC - CGC - TTA - CTT - TCA - AAT - ATT

• none of these are correct

DNA replication results in two DNA molecules,

• each with one new strand and one original strand.

• each with two original strands.

• each with two new strands.

Tags

NGSS.HS-LS3-2

During DNA replication, a DNA strand that has the bases CTA--GGT produces a strand with the bases

• GAU--CCA.

• TCG--AAC.

• ACG--TTG.

• GAT--CCA.