BIO 111 EXAM 4 TEST QUESTIONS WITH ACCURATE SOLUTIONS – ALREADY GRADED
A+
1) After DNA replication, each duplicated chromosome consists of two of which of the
following structures?
A) daughter chromosomes
B) daughter nucleosomes
C) sister chromatids
D) sister chromatins
C) sister chromatids
2) Which of the following cellular events occur in the G1 phase of the cell division cycle?
A) normal growth and cell function
B) DNA replication
C) the beginning of mitosis
D) break down of the nuclear membrane
A) normal growth and cell function
3) What is the name of the microtubule-organizing center found in animal cells as an
identifiable structure present during all phases of the cell cycle?
A) centriole
B) centrosome
,C) centromere
D) kinetochore
B) centrosome
4) The mitotic spindle plays a critical role in which of the following processes?
A) splitting of the cell (cytokinesis) following mitosis
B) triggering condensation of chromosomes
C) dissolving the nuclear membrane
D) separation of sister chromatids
D) separation of sister chromatids
25) How do cells at the completion of meiosis compare with cells that are in prophase of
meiosis I?
A) The cells have half the number of chromosomes and half the amount of DNA.
B) The cells have the same number of chromosomes and half the amount of DNA.
C) The cells have half the number of chromosomes and one-fourth the amount of DNA.
D) The cells have half the amount of cytoplasm and twice the amount of DNA.
C) The cells have half the number of chromosomes and one-fourth the amount of DNA.
26) Which of the following events happens at the conclusion of meiosis I?
A) Homologous chromosomes of a pair are separated from each other.
,B) The chromosome number per cell remains the same.
C) Sister chromatids are separated.
D) Four daughter cells are formed.
A) Homologous chromosomes of a pair are separated from each other.
27) During which of the following processes do sister chromatids separate from each
other?
A) during meiosis I only
B) during meiosis II only
C) during both mitosis and meiosis I
D) during both mitosis and meiosis II
D) during both mitosis and meiosis II
28) Which of the following processes occurs in meiosis but not in mitosis?
A) chromosome replication
B) synapsis of chromosomes
C) alignment of chromosomes at the metaphase plate
D) condensation of chromosomes
B) synapsis of chromosomes
29) Which of the following processes has just occurred when chiasmata can first be viewed
under a microscope?
, A) meiosis II
B) anaphase II
C) prophase I
D) the separation of homologs
C) prophase I
30) Cohesions at centromeres of sister chromatids breakdown at what stage?
A) Anaphase I
B) Metaphase I
C) Prophase I
D) Anaphase II
D) Anaphase II
31) Somatic cells of roundworms have four individual chromosomes per cell. How many
chromosomes would you expect to find in an ovum from a roundworm?
A) four
B) two
C) eight
D) a diploid number
B) two
A+
1) After DNA replication, each duplicated chromosome consists of two of which of the
following structures?
A) daughter chromosomes
B) daughter nucleosomes
C) sister chromatids
D) sister chromatins
C) sister chromatids
2) Which of the following cellular events occur in the G1 phase of the cell division cycle?
A) normal growth and cell function
B) DNA replication
C) the beginning of mitosis
D) break down of the nuclear membrane
A) normal growth and cell function
3) What is the name of the microtubule-organizing center found in animal cells as an
identifiable structure present during all phases of the cell cycle?
A) centriole
B) centrosome
,C) centromere
D) kinetochore
B) centrosome
4) The mitotic spindle plays a critical role in which of the following processes?
A) splitting of the cell (cytokinesis) following mitosis
B) triggering condensation of chromosomes
C) dissolving the nuclear membrane
D) separation of sister chromatids
D) separation of sister chromatids
25) How do cells at the completion of meiosis compare with cells that are in prophase of
meiosis I?
A) The cells have half the number of chromosomes and half the amount of DNA.
B) The cells have the same number of chromosomes and half the amount of DNA.
C) The cells have half the number of chromosomes and one-fourth the amount of DNA.
D) The cells have half the amount of cytoplasm and twice the amount of DNA.
C) The cells have half the number of chromosomes and one-fourth the amount of DNA.
26) Which of the following events happens at the conclusion of meiosis I?
A) Homologous chromosomes of a pair are separated from each other.
,B) The chromosome number per cell remains the same.
C) Sister chromatids are separated.
D) Four daughter cells are formed.
A) Homologous chromosomes of a pair are separated from each other.
27) During which of the following processes do sister chromatids separate from each
other?
A) during meiosis I only
B) during meiosis II only
C) during both mitosis and meiosis I
D) during both mitosis and meiosis II
D) during both mitosis and meiosis II
28) Which of the following processes occurs in meiosis but not in mitosis?
A) chromosome replication
B) synapsis of chromosomes
C) alignment of chromosomes at the metaphase plate
D) condensation of chromosomes
B) synapsis of chromosomes
29) Which of the following processes has just occurred when chiasmata can first be viewed
under a microscope?
, A) meiosis II
B) anaphase II
C) prophase I
D) the separation of homologs
C) prophase I
30) Cohesions at centromeres of sister chromatids breakdown at what stage?
A) Anaphase I
B) Metaphase I
C) Prophase I
D) Anaphase II
D) Anaphase II
31) Somatic cells of roundworms have four individual chromosomes per cell. How many
chromosomes would you expect to find in an ovum from a roundworm?
A) four
B) two
C) eight
D) a diploid number
B) two
