Unit 7 DNA

Which structure is the template to create mRNA molecules during transcription?

• tRNA

• DNA

• rRNA

• Proteins

Tags

NGSS.HS-LS1-1

Proteins have many functions in cell structure and processes. For example, proteins control ___ which is the division of body cells. They control ___ which is the change from stem cells to specialized cells.

• Meiosis, differentiation

• Mitosis, differentiation

• Mitosis, replication

• Meiosis, enzymes

Tags

NGSS.HS-LS1-4

Based on the base pairing rules, the percentage of Adenine (25%) and Thymine (25%) equal 50%. Guanine bases in chicken DNA should be around ___.

• 50%

• 25%

• cannot be determined

• 100%

In eukaryotes, DNA

• Is located in the ribosome

• Floats freely in the cytoplasm

• Is located in the nucleus

• Is circular

Which type of RNA takes DNA’s genetic code from the nucleus to other parts of the cell?

• rRNA

• mRNA

• RNA

• tRNA

A nucleotide mutation will often cause a change in phenotype because mutations __.

• Change DNA, so proteins will likely be produced incorrectly

• Change transcription which produces more DNA

• Always cause cells to die

• Change DNA, but amino acids can correct the error

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

At a crime scene, DNA is found. DNA analysis can determine guilt or innocence in many cases. One of the following scenarios explains why Suspect 2 would be arrested.

• The crime victim has DNA sequences identical to the DNA collected at crime scene

• DNA can not accurately predict who committed a crime

• Suspect 2 has DNA sequences identical to the DNA collected at crime scene 1

• The victim and suspect 1 have DNA similar to each other.

What carbon-based molecule stores genetic information in a cell?

• Carbohydrates

• Deoxyribonucleic Acid

• Lipids

• Proteins

Tags

NGSS.HS-LS3-1

DNA is made up of subunits called nucleotides. Which of these could NOT be a DNA nucleotide?

• Phosphate, sugar, nitrogen base

• Phosphate, sugar, uracil

• Phosphate, sugar, thymine

• Phosphate, sugar, adenine

Combining their work with other scientists, Watson and Crick discovered that two strands of DNA join together to form the shape of a(n) ___.

• Nucleotide

• X in a circle

• Double helix

• Hydrogen bond