DNA REVIEW

The table shows the results of measuring the percentages of the four bases in the DNA of several different organisms. Some of the values are missing from the table. Based on Chargaff’s rule, the percentages of guanine bases in chicken DNA should be approximately what?

• 28.8%
• 19.9%
• 21.5%
• 13.4%

Name this structure

• double helix
• nucelotide
• amino acid
• base pair

Tags

NGSS.HS-LS1-1

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

What are the three components of a nucleotide?

• carbonate, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, amino acid

What is meant that DNA replication follows a “semi-conservative” model?

• After DNA replication, each strand contains one side that is a parental strand and the other side is a daughter strand.
• After DNA replication, one completed strand contains only parental DNA while the other contains only daughter DNA.
• None of these identify the “semi-conservative” model.
• After DNA replication, one completed strand contains a mixture of both parental DNA and daughter DNA dispersed throughout the strand.

Which scientists determined that DNA was a double helix?

• Franklin & Watkins
• Hershey & Chase
• Meselson & Stahl
• Watson & Crick

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine
• adenine, thymine cytosine, and guanine
• adenine, thymine, cytosine, and gylcerol
• adenine, thymine, cytosine, and glucose

Tags

NGSS.MS-LS3-1

The ____ ____ regulates what enters and leaves the cell and also protects and supports the cell.

• Golgi Apparatus
• ER
• cell wall
• cell membrane

Tags

NGSS.MS-LS1-2

Particles moving from a high concentration to a lower concentration are demonstrating _____.

• diffusion
• confusion
• permeable response to environment
• permanent membrane

Tags

NGSS.MS-PS1-4

Molecules that are unable to diffuse across the membrane may use _____ ____ or special protein channels to pass through,

• permits glucosomine
• permits forfietures
• facilitated diffusion
• optional optusion