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WorksheetsGB1 Midterm Reviewer
Total questions: 70
Worksheet time: 1hrs 10mins
During what phase of Mitosis do the chromosomes line up in the Middle
Metaphase
Prophase
Telophase
Anaphase
What can stem cells be used for?
Repairing damage from a heart attack
Regrowing limbs
Bone marrow transplants
All of these
Why are stem cells controversial?
The best kind come from bone marrow
The best kind come from embryos
They have to be taken from animal testing
None of these
An (a) cell is called a (b) . These cells are important so that multicellular organisms can (c) cells when needed.
Meristems are unspecialised cells in...
(a)
Allow a plant to keep growing taller and spread wider
Meristems at the tips of shoots
Increase the width of a plant. Results in 'growth rings'
Meristems between the xylem and phloem
Provide a constant supply of new cells allowing roots to grow longer
Meristems at the tips of roots
Prophase
The chromosomes condense and the spindle forms
Metaphase
Chromosomes are aligned on the spindle equator.
Anaphase
Sister chromatids separate.
Telophase
The spindle disappears, and the nuclear envelope forms.
Prometaphase
The nuclear envelope breaks up, and spindle fibers attach
to kinetochores.
The cytoplasm of a cell divides by which process?
Telekinesis
Nuclear Division
Fission
Cytokinesis
Match each phase of the cell cycle with what occurs in the cell.
The cell grows and performs its normal cell functions.
G1
The cell replicates its DNA.
S
The cell growths and prepares for the nuclear division, and tries to fix the DNA replication errors.
G2
The nucleus divides
Mitosis
G1 - Gap 1
S - Synthesis
G2 - Gap 2
M - Mitosis
Cancer is ...
(Choose ALL that apply)
uncontrolled
cell growth
unregulated
cell growth
rapid
cell growth
normal
cell growth
Uncontrolled cell growth leads to
cancer
cell growth
normal
cell growth
Made up of dead cells
sclerenchyma
collenchyma
xylem
parenchyma
phloem
What is the main function of the phloem for the plant?
Transport water and oxygen from the roots to the leaves.
Carry dissolved sugars from the leaves to the growing regions of the plant.
Transport minerals and water from the leaves to the storage regions of the plant.
Carry water from the leaves to the growing regions of the plant.
The (a) carries (b) and dissolved nutrients from the (c) to other parts of the plant
Which of the following is not an example of animal tissue?
epithelia
(skin)
connective
(blood)
parenchyma
Where can you find stem cells?
(There are 2 possible answers)
(a)
Plant tissues responsible for growth is the .....
vascular tissue
meristematic tissue
epidermal tissue
ground tissue
Which bone cells work one removing old or extra bone?
Osteocyte
Osteoclast
Osteogenic Cells
Osteoblast
Which bone cells works on repairing broken bones?
Osteogenic Cells
Osteocytes
Osteoblasts
Osteoclasts
What is the relationship between osteoclasts and osteoblasts?
Osteoblasts build bones, and osteoclasts clean up excess bones. They keep each other in balance.
Osteoblasts blow up your skeleton. Osteoclasts put bones into casts. Death is inevitable.
Osteoblasts rule the skeletal system with an iron fist. Osteoclast seek to usurp the power of the mighty calcium lords. There is a war. One day it will end.
Everything changed when the osteoclasts attacked. Now it's up to the last osteoblast to save the day.
Compare and contrast the significance of Mitosis and Meiosis in your own life.
When does each cell division process occur? Why does mitosis or meiosis happen in your body?
Mature bone cells found within the bone are called?
osteocytes
osteoblasts
osteoclasts
osteons
Mature bone cells responsible for maintaining the bone matrix
Why would human muscle cells contain many more mitochondria than skin cells?
Explain why red blood cells do not have a nucleus.
Here are the types of plant cells found within the ground tissues.
Identify each type according to their appropriate characteristics.
Collenchyma
Parenchyma
Sclerenchyma
Which of the following is an undifferentiated embryonic tissue found in the active growth regions of plants such as tips of roots and stems?
Parenchyma tissue
Collenchyma tissue
Meristematic tissue
Permanent tissue
This is ************ karyotype
Normal male
Normal female
Down syndrome
(male)
Down syndrome
(female)
This is ************ karyotype
Normal male
Normal female
Down syndrome
(male)
Down syndrome
(female)
Is this individual male or female?
Male
Female
Pairs of similar chromosomes are called...
homologous chromosomes
sister chromatids
What is an organized picture of all of an organism’s homologous chromosome pairs lined up with each other?
Pedigree
Karyotype
How many pairs of sex chromosomes do human cells contain?
22
1
46
How many pairs of autosomes do human cells contain?
22
1
46
How many pairs of chromosomes do human cells contain?
23
46
The karyotype diagram below represents a human female with the genetic disorder known as Turner syndrome. Chromosomal analysis of this karyotype reveals the mutation is a result of
a missing X chromosome
a missing Y chromosome
an extra 21 chromosome
missing chromosome #9
What phase is this?
Telophase I
Prophase II
Metaphase I
Anaphase II
In which phase does crossing-over happen?
Prophase I
Prophase II
Metaphase I
Anaphase II
During meiosis, if an organism has 10 chromosomes, how many will the new daughter cells have?
10
8
5
2
In mitosis the (a) daughter cells that are created are (b) . In meiosis the (c) daughter cells that are created are (d)
the number of the chromosome in the human somatic cells is ...
(a)
An extra sex chromosome
A missing sex chromosome
A missing autosome (Monosomy)
An extra autosome (Trisomy)
Attachment of the mitotic spindle fibers to the kinetochores is a characteristic of which stage of mitosis?
prophase
prometaphase
metaphase
anaphase
In humans, the haploid number of chromosomes is ____.
23
46
69
92
In Anaphase II, the _________ separate.
Homologues
Sister Chromatids
Tetrads
Centrioles
True or False. In Meiosis II, there are TWO cells that go through each phase at the same time.
true
false
Chromosomes condense
Mitosis
Meiosis
Both
Involves crossing over
Mitosis
Meiosis
Both
Ends with diploid number of chromosomes
Mitosis
Meiosis
Both
Down Syndrome is a genetic disorder that happens when an individual obtains an extra copy of chromosome 21. This is because during meiosis the homologous chromosome/sister chromatids fail to separate. Failure to separate chromosomes is known as (a) ?
Name the genetic disorder shown by the karyotype:
Trisomy 21
Monosomy 21
Trisomy 3
Monosomy 3
Which type of stem cell can grow into any other cell type?
pluripotent
totipotent
somatic
multipotent
Benign
abnormal cells that typically remain clustered together. can be harmless
Malignant
cancer cells that break away from the tumor and move to other parts of the body
Metastasize
spreading of disease from one organ to others
Cancer
uncontrolled cell division
Tumors
clumps of cells that divide uncontrollably
Match the following.
Totipotent
Develop into any type of cell in the body, including the cells that make the placenta
Pluripotent
cells that are capable of developing into most, but not all, of the body’s cell types
Multipotent
limited potential to develop into differentiated cells
Mainly found in bone marrow & hair follicles
Undifferentiated
cells are used to repair or replace damaged cells and tissues.
Prophase
Chromosomes condense to sister chromatids.
Nuclear membrane disappears.
Spindles form.
Metaphase
Spindle fibers connect to the centromeres.
Chromosomes line up in middle of the cell.
Anaphase
Sister chromatids separate, pulling away from each other to opposite ends.
Telophase
Chromosomes decondense and start to look like chromatin again. Nuclear membrane re-forms.
Cytokinesis
Plants- Cell plate forms & creates a cell wall.
Animal- cleaves furrows, cytoplasm separates
Chromatid
one half of a duplicated chromosome.
Sister Chromatids
two identical chromatids
Centromere
region of the condensed chromosomes that looks pinched.
Telomere
ends of the DNA molecule.
