Unit 2 - Part 1 Fertilization and Early
Development review
ROUND 1
Dr. Nowicki
Fert. 1 Fert. 2 What’s so
Gametospecial about When Sperm
No
What-a-Sis?
gametes?
Met Egg
Polyspermy!
Fert. 3 Finally
finished!
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R1C1
• The cells that are created as the endproduct of gametogenesis have this
ploidy number.
AR1C1
• What is 1N?
R2C1
• Spermatogenesis takes place in
these structures in the
mammalian testis.
AR2C1
• What are the seminiferous tubules?
R3C1
• Oogenesis takes place in these
organs in the mammalian female.
AR3C1
What are the ovaries?
R4C1
Primary spermatocytes have this ploidy
number.
AR4C1
What is 2N?
R5C1
• Secondary spermatocytes have this
ploidy number.
AR5C1
What is 1N?
R1C2
• These are the 3 major regions of a
spermatozoan.
AR1C2
What are the head,
midpiece/neck and tail?
R2C2
This sac of enzymes in the sperm
is essential for successful
fertilization.
AR2C2
• What is the acrosome?
R3C2
• The sperm midpiece contains many
of this cellular organelle.
AR3C2
• What are mitochondria?
R4C2
• Mature ovum have a special protective
membrane around them that help with
fertilization called this:
AR4C2
What is a vitelline membrane or
zona pellucida?
R5C2
• Microtubules in the sperm flagella are
anchored by this structure.
AR5C2
• What is the centriole?
R1C3
• This process by which a cell responds to a
chemical is essential for sea urchin
gametes to find one another.
AR1C3
• What is chemoattraction?
R2C3
• Acrosomal Vesicles are released by a
process called ______________.
AR2C3
What is exocytosis?
R3C3
• This 14-amino acid peptide in the egg jelly
of sea urchins helps with attraction of the
sperm to the egg.
AR3C3
What is resact?
R4C3
• This kind of ion channel is used during the
sperm acrosome reaction.
AR4C3
• What are Ca2+ channels?
R5C3
• The acrosomal process in the sea
urchin S. purpuratus is coated in this
protein that allows for species
specificity in sperm-egg contact.
AR5C3
What is bindin?
R1C4
• Fertilization of the egg by 1 extra sperm
results in this ploidy number.
AR1C4
• What is triploid?
R2C4
• The sodium-potassium pumps in the egg
pump sodium in this direction.
AR2C4
• What is out of the egg?
R3C4
• These granules create the slow block
to polyspermy.
AR3C4
• What are cortical granules?
R4C4
• The small negative charge (-70mV)
in the egg prior to fertilization is
called this.
AR4C4
• What is the resting membrane potential?
R5C4
• If sea urchin eggs are fertilized under a
low sodium sea water, this condition
results.
AR5C4
• What is polyspermy?
R1C5
• Activation of the egg after
fertilization has 2 phases. Name
them.
AR1C5
What are Early and Late?
R2C5
•
The mitotic spindle of the zygtote
is organized by structure, from this
gamete.
AR2C5
• What is the centriole from the sperm?
R3C5
• Prior to fusion, the 2 nuclei from the
haploid gametes that have fused to
make a zygote are called this.
AR3C5
What are pronuclei?
R4C5
• Late responses of the egg to sperm
entry include increased synthesis of
these 2 molecules.
AR4C5
• What are DNA and Protein?
R5C5
• Early responses of the egg to
fertilization include an increased use
of this metabolic essential molecule.
AR5C5
What is Oxygen?