DNA Middle School Worksheet Questions

In a molecule of double-stranded DNA, Chargaff revealed that the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil

Watson and Crick, based on Franklin's X-Ray christalography,  were the first to suggest that DNA is _____

• a short molecule
• the shape of a double helix
• a protein molecule
• the genetic material

Tags

NGSS.HS-LS1-1

Nitrogenous bases are joined by which type of bond? (Hint: a weak bond that can be broken by helicase).

• Van der Waals forces
• ionic bonds
• covalent bonds
• hydrogen bonds

Tags

NGSS.HS-LS1-1

Avery's experiment revealed that when DNAse was added to a mixture of live non-lethal pneumococcus bacteria and dead virulent bacteria

• transformation did not occur.
• transformation occurred.
• transcription occurred.
• translation did not occur.

Tags

NGSS.HS-LS3-2

What process makes a copy of messenger RNA from DNA?

• Replication
• Transcription
• Translation
• Transformation

Which type of RNA is made in the nucleus (not including the nucleolus) and must travel to the ribosome with its message?

• messenger
• ribosomal
• transfer
• nuclear

In the drawing, which are RNA molecules?

• II, III, and IV
• I, II, and III
• I, II, and IV
• I and II only

The resultant mutation shown in the drawing could possibly result in changes to the amino acid sequence from the deletion to the end of the polypeptide. The deletion (and future possible insertions) results in

• an insertion.
• a frame shift.
• a substitution.
• a translation.

Tags

NGSS.HS-LS3-2

DNA in the large cell (drawn on the right) is found in all of the following organelles EXCEPT in

• mitochondria
• Chloroplasts
• nuclei
• ribosomes

If Chargaff found that a sample of DNA has 20% ADENINE, how much GUANINE would he have determined to be there?

• 30%
• 20%
• 80%
• 60%