3A and G Check

What major event is taking place during mitosis?

• The formation of ribosomes.
• The synthesis of proteins.
• The replication of DNA.
• The division of the cell's nucleus.

Tags

NGSS.HS-LS1-4

Match the letter on the diagram with the correct step of the cell cycle.

• I

• Mitosis

• A

• Interphase

• D

• S Phase

• B

• G1

• C

• G2

Tags

NGSS.HS-LS1-4

Why are G1 and G2 vital parts of the cell cycle?

• G1 and G2 are only involved in protein synthesis.
• G1 and G2 are phases that occur after cell division.
• G1 and G2 are vital for cell growth, which ensures the daughter cells are large enough to be viable

• G1 and G2 are responsible for energy production in the cell.

Tags

NGSS.HS-LS1-4

Reorder the following steps of the cell cycle

• G1

• Cytokinesis

• S phase

• G2

• Mitosis

Tags

NGSS.HS-LS1-4

What is the longest phase, cells spend 90% of their life in this phase?

• Interphase
• Prophase
• Cytokinesis
• Mitosis

Why can't DNA replication happen anywhere other than the nucleus?

• DNA replication can occur in the cytoplasm where ribosomes are located.
• DNA replication requires sunlight, which is only available outside the nucleus.
• DNA replication can happen in mitochondria, as they contain their own DNA.
• DNA replication cannot happen anywhere other than the nucleus because the genetic material is too large to leave the nucleus.

What does it mean when we say that DNA is being replicated?

• DNA replication involves breaking down the DNA molecule.
• DNA replication is the process of altering the DNA sequence.
• DNA replication means synthesizing proteins from DNA.
• DNA replication means creating an exact copy of the DNA molecule.

How does the original DNA strand compare to the new strand synthesized during replication?

• The new strand contains only half of the original DNA sequence.
• The new strand is a mirror image of the original strand.
• The new strand is a random sequence of nucleotides.
• The new strand is identical to the original strand.

Why do we call DNA replication semi-conservative?

• DNA replication is called semi-conservative because it conserves energy during the process.
• DNA replication is called semi-conservative because each new DNA molecule contains half original strand and half new strand.

• DNA replication is called semi-conservative because it only uses new strands.
• DNA replication is called semi-conservative because it occurs in two phases.

Which of the following choices would be the complementary strand to the DNA below:

CAT TTA CGG

• GTA AAT CG

• GTA AT CCG

• CAT TTA CGC
• GTA AAT GCC