RIO BIO 156 ADVANCED MIDTERM
EVALUATION 2026 IN DEPTH QUESTIONS
WITH METICULOUSLY EXAMINED
VERIFIED ANSWERS GRADED A+
⩥ What are the 4 intervals of interphase in the order they take place?
Answer: G1, G0, S, G2
⩥ What happens in interval G1? Answer: this is when the cell increases
in size and produces molecules required for DNA replication
⩥ From which interval would a cell possibly go into interval G0 and
how long would it stay there? What would it do there? Answer: if a cell
decided to go to G0 it would be after interval G1. Here it would just go
about its metabolic business and not prepare to divide. It would stay
there temporarily or permanently. If it decided to leave, it would go back
to G1 and then progress on to interval S.
⩥ What happens in interval S? Answer: a cell copies it's chromosomes
by DNA replication. After this happens each chromosome consists of
two molecules of DNA and they are attached as sister chromatids.
⩥ What happens in interval G2? Answer: the cell produces proteins and
other components that are necessary for division.
, ⩥ Where does a cell go after interval G2 of interphase? Answer: mitosis
⩥ What do the built-in checkpoints do in interphase? Answer: they stop
the cycle from proceeding until certain conditions are met.
⩥ What divides first, the nucleus or the cytoplasm? Answer: Nucleus,
then cytoplasm.
⩥ What happens in mitosis? Answer: the nucleus divides.
⩥ What is cytokinesis? Answer: division of the cytoplasm
⩥ What is a centromere? Answer: The centromere holds the sister
chromatids together (made of protein)
⩥ What is the first stage of mitosis and what happens there? Answer:
Prophase. The nuclear envelope breaks up, the centrosomes split up to
opposite sides of the cell, spindle microtubules assemble and bind to
chromosomes at the centromere. Think pro - pro at breaking up
⩥ What is a centrosome? Answer: microtubule organizing center. they
contain two centrioles.
EVALUATION 2026 IN DEPTH QUESTIONS
WITH METICULOUSLY EXAMINED
VERIFIED ANSWERS GRADED A+
⩥ What are the 4 intervals of interphase in the order they take place?
Answer: G1, G0, S, G2
⩥ What happens in interval G1? Answer: this is when the cell increases
in size and produces molecules required for DNA replication
⩥ From which interval would a cell possibly go into interval G0 and
how long would it stay there? What would it do there? Answer: if a cell
decided to go to G0 it would be after interval G1. Here it would just go
about its metabolic business and not prepare to divide. It would stay
there temporarily or permanently. If it decided to leave, it would go back
to G1 and then progress on to interval S.
⩥ What happens in interval S? Answer: a cell copies it's chromosomes
by DNA replication. After this happens each chromosome consists of
two molecules of DNA and they are attached as sister chromatids.
⩥ What happens in interval G2? Answer: the cell produces proteins and
other components that are necessary for division.
, ⩥ Where does a cell go after interval G2 of interphase? Answer: mitosis
⩥ What do the built-in checkpoints do in interphase? Answer: they stop
the cycle from proceeding until certain conditions are met.
⩥ What divides first, the nucleus or the cytoplasm? Answer: Nucleus,
then cytoplasm.
⩥ What happens in mitosis? Answer: the nucleus divides.
⩥ What is cytokinesis? Answer: division of the cytoplasm
⩥ What is a centromere? Answer: The centromere holds the sister
chromatids together (made of protein)
⩥ What is the first stage of mitosis and what happens there? Answer:
Prophase. The nuclear envelope breaks up, the centrosomes split up to
opposite sides of the cell, spindle microtubules assemble and bind to
chromosomes at the centromere. Think pro - pro at breaking up
⩥ What is a centrosome? Answer: microtubule organizing center. they
contain two centrioles.
