BIOLOGY REPRODUCTION

Answer each question below related to mitosis, by selecting the most appropriate answer from the choices given.

1. During which stage of mitosis is the nuclear membrane broken into fragments?
Ο Early Prophase
Ο Metaphase
Ο Anaphase
Ο Late Prophase
Answer
Early Prophase
During the early prophase, the nuclear membrane is broken into fragments.


2. Equatorial plate of the mitotic spindle is formed during the _______.
Ο metaphase
Ο anaphase
Ο late prophase
Ο early prophase
Answer
metaphase
During the metaphase, the spindle apparatus becomes well-defined and the chromosomes get arranged at the equatorial plate.


3. Mitotic cell division is initiated in the _______.
Ο centriole
Ο centromere
Ο nucleus
Ο mitotic spindle
Answer
centriole
Prophase is the first phase of mitosis. It begins with the division of the centriole.


4. During which stage of mitosis do nucleoli reappear?
Ο Telophase
Ο Anaphase
Ο Early Prophase
Ο Late Prophase
Answer
Telophase
During the telophase, the nuclear membrane appears around the two groups of chromosomes. Thus, two well-defined nucleoli are formed.


5. The number of chromosomes in a human cell is _______.
Ο 2
Ο 4
Ο 23
Ο 46
Answer
46
There are 23 pairs of chromosomes in each human cell.


6. The resting stage of the cell is known as the _______.
Ο interphase
Ο telophase
Ο anaphase
Ο prophase
Answer
interphase
The period between two cell divisions, i.e., the resting stage of the cell, is known as the interphase.


7. During which stage of mitosis do chromatids separate to form two sets of daughter chromosomes?
Ο Anaphase
Ο Telophase
Ο Prophase
Ο Interphase
Answer
Anaphase
During the anaphase, the chromosomes divide at the centromere and start moving towards opposite poles.


8. Genetic information is transferred from parent to daughter cells through the _______.
Ο nucleus
Ο mitochondria
Ο endoplasmic reticulum
Ο centrioles
Answer
nucleus
Genetic information is transferred from parent to daughter cells through the nucleus.


9. Which stage of mitosis is depicted in the diagram below?





Mitosis Stage
Ο Anaphase
Ο Metaphase
Ο Telophase
Ο Prophase
Answer
Anaphase
During the anaphase, the chromosomes divide at the centromere and start moving towards opposite poles. Finally, they are arranged at the opposite poles of the spindle.


10. Which stage of mitosis is depicted in the diagram below?






Mitosis Stage
Ο Telophase
Ο Metaphase
Ο Anaphase
Ο Prophase
Answer
Telophase
During the telophase, nuclear membrane appears around the two groups of chromosomes . Thus, two well-defined nuclei are formed. This is followed by the division of the cytoplasm by a constriction ring at the equator (in the animal cell) or by the formation of a cell plate (in the plant cell).


11. Which stage of mitosis is depicted in the diagram below?




Mitosis Stage
Ο Prophase
Ο Anaphase
Ο Metaphase
Ο Telophase
Answer
Prophase
Prophase is the first phase of mitosis. It begins with the division of centriole. Soon after the division, centrioles start moving towards the opposite poles.


12. Which of the following is the longest stage of mitosis?
Ο Prophase
Ο Telophase
Ο Metaphase
Ο Anaphase
Answer
Prophase
The prophase is the longest stage of mitosis.


13. During which stage of mitosis does longitudinal splitting of the chromosomes occur?
Ο Anaphase
Ο Prophase
Ο Telophase
Ο Metaphase
Answer
Anaphase
During the anaphase, longitudinal splitting of the chromosomes occurs.


14. The interphase and mitosis together constitute the cell cycle.
Ο True
Ο False
Answer
True
The interphase and mitosis together constitute the cell cycle.


15. The nuclear membrane is formed around the newly-formed sets of daughter chromosomes during the telophase.
Ο True
Ο False
Answer
True
During the telophase, the nuclear membrane appears around the two groups of chromosomes. Thus, two well-defined nuclei are formed. This is followed by the division of the cytoplasm by a constriction ring at the equator (in the animal cell) or by the formation of a cell plate (in the plant cell).


16. During mitosis, loosely arranged strands of chromosomes become coiled, shortened and distinct during the metaphase.
Ο True
Ο False
Answer
False
Loosely arranged strands of chromosomes become coiled, shortened and distinct during the prophase.

1. The purpose of mitosis is to ensure that:
each new cell is genetically different from its parent
each new cell receives the proper number of chromosomes
gametes are available for reproduction
DNA is replicated without errors

2. The image below illustrates what phase of mitosis





anaphase
teleophase
metaphase
prophase



3. Which of the following is NOT part of mitosis
prophase
metaphase
telophase
interphase

4. Which of the following is the term used for the "connector" between two sister chromatids?
chromosome
chromatid
centromere
spindle fiber

5. A cell that has 20 chromosomes undergoes mitosis. Which of the following is true?
two daughter cells will be created, each have 20 chromosomes
two daughter cells will be created, each have 40 chromosomes
4 daughter cells will be created, each having 10 chromosomes
2 daughter cells will be created, each having 10 chromosomes

6. The spindle fibers form during which phase of mitosis?
telophase
interphase
prophase
metaphase

7. Compared to the X chromosome, the Y chromosome is:
much larger
much smaller
more twisted
inherited more often

8. Which of the following can be determined from a karyotype?
the sex of the individual
whether the individual has Down Syndrome
The number of chromosomes present
all of these

9. Most cells spend the majority of their time in:
prophase
metaphase
interphase
telophase

10. Cytokinesis begins during which phase?
telophase
prophase
anaphase
metaphase

# Mitosis is nuclear division that starts with 1 diploid cells and ends with 2 ______________cells.

Your answer:
diploid
polyploid
haploid
tetraploid
# Which of these statements best summarizes the cell theory?

Your answer:
Cells contain a nucleus and other parts.
Cells come in different shapes and sizes.
Cells can be seen through a microscope.
Cells are the building blocks of living things.


# The karyotype above shows a person with this condition.

Your answer:
klinefelter's syndrome
monosomy
trisomy
fragile X syndrome
# After cell division, a daughter cell will have properties like the parent cell because--

Your answer:
DNA is replicated prior to cell division
enzymes control cell divison
chromosomes change structure when a cell divides
proteins are created when a cell divides


# The cell spends the greatest amount of time in this stage of the cell cycle.

Your answer:
telophase
prophase
anaphase
interphase
# An advantage of sexual reproduction over asexual reproduction is that it allows protection for the offspring. more offspring to be produced. more genetic variation among the offspring. all of the above. none of the above. An advantage over sexual reproduction over asexual reproduction is that it allows--

Your answer:
more genetic variation among the offspring
faster time for reproduction to occur
protection for the offspring
more offspring to be produced


# What phase of meiosis is seen in the picture above?

Your answer:
Prophase I
Anaphase I
Metaphase I
Telophase I
# What type of cells result after meiosis?

Your answer:
2 genetically identical cells
4 genetically identical cells
2 diploids cells
4 genetically different cells


# A human egg/sperm cell is _______________, but when the sperm and egg come together the fertilized egg (potential human) is ________________.

Your answer:
diploid, diploid
haploid, diploid
diploid haploid
haploid, haploid
# Put the following cell cycle stages in the order they occur.

Your answer:
Prophase, Interphase, Telophase, Metaphase, Anaphase
Interphase, Prophase, Anaphase, Metaphase, Telophase
Telophase, Prophase, Anaphase, Metaphase, Interphase
Interphase, Prophase, Metaphase, Anaphase, Telophase