DNA Structure, Replication, Protein Synthesis, Meiosis

When does DNA replication occur?

• before a cell divides.

• before a makes a protein.

• to replace damaged DNA.

• to make new mRNA.

DNA is semi-conservative because after replication there are -

• one molecule with two original strands and one molecule with two new strands

• two molecules, each with one original and one new strand

• two molecules, each with two new strands

• two molecules, each with two old strands

The sequence of DNA below is part of a gene. How many amino acids are coded for by this segment? (Remember - each set of 3 letters codes for ONE amino acid)

• 4

• 8

• 12

• 20

Tags

NGSS.HS-LS1-1

 A diagram of a cellular process is shown below. Which of the following identifies the process shown at point Z?

• Translation
• Translocation
• Replication
• Transcription

Tags

NGSS.HS-LS1-1

Which of the following carries amino acids to the site of protein synthesis?

• mRNA

• rRNA

• tRNA

• nRNA

The diagram below represents a portion of a DNA molecule. The letters or codes are the different types of

• sugar molecules

• nitrogen bases

• phosphates

• proteins

Tags

NGSS.HS-LS1-1

A diagram of a cellular process (protein synthesis) is shown below. Where does the process happening a 'Y' occur?

• Nucleus

• Ribosome

• Cytoplasm

• Lysosome

Tags

NGSS.HS-LS1-1

Where do we find DNA?

• all living things.

• plants only.

• animals and plants but not bacteria.

• only non-living things.

Tags

NGSS.MS-LS1-1

What DNA sequence would match C-G-A-T-C

• G-C-T-A-G

• C-G-A-T-C

• C-T-A-G-C

• A-T-C-G-A

Photo 51 shows an X-ray diffraction of DNA. This image was taken by-

• Watson

• Crick

• Rosalind Franklin

• Chargaff

Tags

NGSS.HS-LS1-1