DNA and RNA Structure

The nucleus contains DNA. Which statement BEST describes how DNA controls the working of the cell?

• It codes for proteins.

• It inhibits division of cells.

• It helps in energy transformation.

• It regulates traffic in and out of the cell.

Tags

NGSS.HS-LS1-1

DNA molecules contain the genetic information that determines the characteristics of a living organism. How do DNA molecules express the genetic information they contain?

• by breaking down proteins within the cell

• by directing the process of protein synthesis

• by regulating the storage of cellular proteins

• by controlling the movement of protein molecules

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which part of a DNA molecule represents encoded information?

• phosphate

• sugar

• guanine

• hydrogen bond

Tags

NGSS.HS-LS3-1

What is the complimentary base of adenine in DNA?

• thymine

• cytosine

• guanine

• uracil

What aspect of the DNA molecule encodes hereditary information concerning an organism's traits?

• the molecular mass

• the sequence of base pairs

• the distribution of electrical charges

• the folded three-dimensional shape

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

During replication, the DNA sequence ACT results in which sequence on the new strand?

• ACT

• TCA

• TGA

• UGA

How is the DNA sequence AATTA replicated in a new strand during semi conservative replication?

• AATTA

• AATAA

• TTATT

• TTAAT

A single-stranded sequence of DNA is TAC CGC AAG. Which series represents the complimentary strand of DNA?

• CGT TAT GGA

• ATG GCG TTC

• GCA ATA CCT

• AUG GCG UUC

A DNA strand undergoing replication contains the bases TACGTT. Which complimentary strand does it produce?

• AUCGAA

• ATGCAA

• ATCGAA

• AUCGTT

All organisms contain DNA and RNA. What are the subunits of DNA and RNA?

• simple sugars

• amino acids

• carbohydrates

• nucleotides