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Microvilli
The structure that pulls the sperm into the oocyt
oocyte cytoplasm
Arrange these structures of a human egg (secondary oocyte) according to the order that a sperm cell passes through them during fertilization.
In late fertilization, after the sperm and egg pronuclei have fused, the centrosomes and spindle apparatus that are required for mitotic cell division are derived from the
basal body of the sperm flagellum
Development
All the changes that occur during the life cycle of an organism are collectively called
The term that refers to the multicellular organism that undergoes development after the zygote stage is an
embryo
What aids with the penetration of the zona pellucida?
Release of digestive enzymes from the sperm
Corona radiata
The first structure that perm have to pass through in order to fertilize the egg
fusion of the sperm and egg pronuclei to form a zygote
Final stage of fertilization
A multicellular embryo
the result of cleavage
cellular
The first stage of development
cleavage
The first cellular stage of development, which involves cell division without the addition of cytoplasm or any increase in embryo size is known as
embryo
During the early, cellular stages of development, an organism is called a(n)
morula
During early stages of animal development, the solid ball of cells that develops as a result of cleavage is the
Fertilization in animals
Sperm penetrate the corona radiata, acrosomal enzymes digest zona pellucida, sperm binds to oocyte plasma membrane, sperm pronucleus forms, sperm pronucleus forms, sperm and egg pronuclei enclosed in nuclear envelope.
fertilization in animals pt 2
Sperm reaches oocyte, sperm secretes enzymes that weaken the corona radiata, sperm binds to the zona pellucida, sperm fuses with the oocyte plasma membrane, sperm nucleus enters oocyte cytoplasm
blastula
After cleavage results in a multicellular embryo, the second cellular stage of embryonic development is formation of the
cleavage
Cellular division without growth is called
Osmosis
Which process is responsible for the formation of the blastocoel during the cellular stages of development?
corona radiata
What is the first structure that sperm have to pass through in order to fertilize the egg?
blastula
The blastocoel is a fluid-filled cavity within a hollow ball of cells called the .
gastrula stage development
A. Archenteron B. ectoderm C. endoderm D. mesoderm
egg
Yolk is located within a hard-shelled
Gastrulation
The three germ layers form during which developmental stage?
blastocyst
The hollow, fluid-filled ball of cells that forms during the cellular stages of development is called a(n)
chicken
mesoderm forms from invagination of cells from. the primitive streak
frog
mesoderm forms by migration of cells between the ectoderm and endoderm
lancelet
mesoderm forms as an out pocketing of the archenteron
blastula
The blastocoel is a fluid-filled cavity within the .
endoderm
Beginning at the gastrula stage, the inner layer of cells in a developing animal embryo is called
Multiple choice question.
