Bio 1A03 Test 3 Questions With Already
Passed Answers.
Binary Fission steps - Answer -Initiated when proteins attach DNA to plasma membrane
-Begins along ORI region
-Newly synthesized DNA also anchored to membrane
-Cell elongates until ~2 times its original size and two has two chromosomes on opposite ends
of the cell
-Cell splits in two
Quiescent stem cells, function - Answer Permanently arrested in G0 phase. In adults: can
replace non-reproducing specialized cells) ex adult skeletal muscle/myofiber)
Steps of quiescent stem cell to myofiber - Answer -Activated (reenter cell cycle)
-Proliferative (look over this one)
-Commitment to differentiation
-Fusion into myotube (precursor of myofiber)
-Myofiber
steps of cell cycle - Answer G1 phase
S phase
G2 phase
M phase
~G0 phase~ perhaps
G1 phase - Answer growth phase, prepares cell for dna synthesis
s phase - Answer cell undergoes dna replication
g2 phase - Answer growth phase, cell prepares for division
, binary fission is common to - Answer bacteria, archaea, mitochondria, chloroplasts
Satellite Stem Cells - Answer quiescent stem cells that specifically are activated to replace
injured muscle fibers
Walter Flemming - Answer Discovered stages of mitosis from salamanders
During interphase, the genetic material of a typical eukaryotic cell is - Answer chromatin fiber
genetic material during s phase - Answer sister chromatids are synthesized (including
centromere) but chromosomes don't actually compact until M phase (46 X-shaped not linear
chromosomes / 92 chromatids)
chromatids - Answer chromosome in duplicated state
# chromosomes and chromatids in human before & after mitosis, meiosis I, and meiosis II -
Answer Mitosis
Before: 46, 92
After: 46, 46
Meiosis I
Before: 46, 92,
After: 23, 46
Meiosis II
Before: 23, 46
After: 23, 23
https://datbootcamp.com/biology-strategy/chromosome-and-chromatid-numbers-during-
mitosis-and-meiosis/
genetic material during interphase - Answer chromatin fiber, can't identify specific
chromosomes
Passed Answers.
Binary Fission steps - Answer -Initiated when proteins attach DNA to plasma membrane
-Begins along ORI region
-Newly synthesized DNA also anchored to membrane
-Cell elongates until ~2 times its original size and two has two chromosomes on opposite ends
of the cell
-Cell splits in two
Quiescent stem cells, function - Answer Permanently arrested in G0 phase. In adults: can
replace non-reproducing specialized cells) ex adult skeletal muscle/myofiber)
Steps of quiescent stem cell to myofiber - Answer -Activated (reenter cell cycle)
-Proliferative (look over this one)
-Commitment to differentiation
-Fusion into myotube (precursor of myofiber)
-Myofiber
steps of cell cycle - Answer G1 phase
S phase
G2 phase
M phase
~G0 phase~ perhaps
G1 phase - Answer growth phase, prepares cell for dna synthesis
s phase - Answer cell undergoes dna replication
g2 phase - Answer growth phase, cell prepares for division
, binary fission is common to - Answer bacteria, archaea, mitochondria, chloroplasts
Satellite Stem Cells - Answer quiescent stem cells that specifically are activated to replace
injured muscle fibers
Walter Flemming - Answer Discovered stages of mitosis from salamanders
During interphase, the genetic material of a typical eukaryotic cell is - Answer chromatin fiber
genetic material during s phase - Answer sister chromatids are synthesized (including
centromere) but chromosomes don't actually compact until M phase (46 X-shaped not linear
chromosomes / 92 chromatids)
chromatids - Answer chromosome in duplicated state
# chromosomes and chromatids in human before & after mitosis, meiosis I, and meiosis II -
Answer Mitosis
Before: 46, 92
After: 46, 46
Meiosis I
Before: 46, 92,
After: 23, 46
Meiosis II
Before: 23, 46
After: 23, 23
https://datbootcamp.com/biology-strategy/chromosome-and-chromatid-numbers-during-
mitosis-and-meiosis/
genetic material during interphase - Answer chromatin fiber, can't identify specific
chromosomes
