Question

notes: the stages of the cell cycle

1. all living things are made of illegible. for an organism to grow, these cells must illegible to make more cells.
2. the process of cellular division is very important because it makes every cell in an organism illegible.
3. most of the cells time is spent illegible to divide during interphase.

o interphase = illegible of the cell cycle
interphase

1. interphase has ____ important stages.

• the gaps between activity when the cell grows and performs normal cellular processes.

__ = __
____ (s) phase - dna
g0
resting phase: cells are not preparing to divide
interphase: dna replication

1. every cell needs a complete set of dna.

o dna must be ____ (copied) to make 2 complete sets in the s phase.

1. step 1: the dna __ and the two strands must __ between the nitrogenous bases
2. step 2: the dna polymerase enzymes add nucleotides to create ____.
3. dna replication is a semi - conservative process.

o each set of dna contains __ strand and __ strand.

Explanation:

1. All living things are made of cells, and cells must divide for an organism to grow.
2. Cellular division is important for cell - like functions in an organism.
3. Most of a cell's time is spent preparing to divide during interphase, which is 90% of the cell cycle.
4. Interphase has 3 important stages: G1 (the gap before DNA synthesis where the cell grows and performs normal functions), S (DNA synthesis phase where DNA is replicated), and G2 (the gap after DNA synthesis). In DNA replication, DNA must be replicated in the S - phase. The DNA unwinds and the hydrogen bonds between the nitrogenous bases break. DNA polymerase enzymes add nucleotides to create new complementary strands. DNA replication is semi - conservative, with each set of DNA containing one original strand and one new strand.

Answer:

1. cells; divide
2. function
3. preparing; 90%
4. 3; G1; G1; Synthesis; replicates; unwinds; break; new complementary strands; one original; one new