Question

semester 1 review - unit 2.2
unit 2: instruction sequence 2
sc.912.l.16.14 describe the cell cycle, including the process of mitosis. explain the role of mitosis in the formation of new cells and its importance in maintaining chromosome number during asexual reproduction.
1
categorization 2 points
the cell cycle is made up of 4 phases. organize what occurs during each of these four phases.
s phase \t\tg1 phase
::: replication of the dna \t\t::: performing normal cell functions and jobs
\t\t\t::: mitochondria duplicate
g2 phase \t\tm phase
::: get ready for cell division \t\t::: cell division
\t\t\t::: cytokinesis
possible answers
drag uncatergorized answers here

Explanation:

Step1: Analyze G1 phase

G1 phase is the first gap phase. During this phase, the cell performs normal cell functions and jobs (like growth, protein synthesis for normal cellular activities). So match "performing normal cell functions and jobs" with G1 phase.

Step2: Analyze S phase

S phase is the synthesis phase. The key event here is the replication of DNA (so that each daughter cell gets a complete set of genetic material). So match "Replication of the DNA" with S phase.

Step3: Analyze G2 phase

G2 phase is the second gap phase. The cell prepares for cell division (like making proteins needed for mitosis, checking DNA for errors). So match "get ready for cell division" with G2 phase.

Step4: Analyze M phase

M phase (mitotic phase) includes mitosis and cytokinesis. Mitosis is the division of the nucleus, and cytokinesis is the division of the cytoplasm, overall resulting in cell division. So match "Cell Division" and "Cytokinesis" with M phase. Also, during G2 or M? Wait, mitochondria duplicate during G2? Wait, no, mitochondria duplication can occur during G1, S, or G2, but in the context of cell cycle phases and the given options, let's re - check. Wait, the possible answers: "mitochondria duplicate" - maybe during G1 or G2? But the given G1 has "performing normal...", S has "Replication...", G2 has "get ready...", M has "Cell Division" and "Cytokinesis". Wait, maybe the "mitochondria duplicate" is part of interphase (G1, S, G2). But according to the given options, let's assign:

G1 phase: performing normal cell functions and jobs

S phase: Replication of the DNA

G2 phase: get ready for cell division; mitochondria duplicate (since in G2, the cell is preparing for division, and organelles like mitochondria duplicate to be distributed to daughter cells)

M phase: Cell Division; Cytokinesis (since M phase is when mitosis (nuclear division) and cytokinesis (cytoplasmic division) occur, resulting in two daughter cells)

Wait, maybe the initial matching:

G1: performing normal cell functions and jobs

S: Replication of the DNA

G2: get ready for cell division; mitochondria duplicate (because in G2, the cell is preparing for mitosis, so it duplicates organelles like mitochondria)

M: Cell Division; Cytokinesis (because M phase is mitosis and cytokinesis, which is cell division)

So the correct categorization is:

G1 phase: performing normal cell functions and jobs

S phase: Replication of the DNA

G2 phase: get ready for cell division; mitochondria duplicate

M phase: Cell Division; Cytokinesis

Answer:

• G1 phase: performing normal cell functions and jobs
• S phase: Replication of the DNA
• G2 phase: get ready for cell division; mitochondria duplicate
• M phase: Cell Division; Cytokinesis