Navigation » List of Schools » West Los Angeles College » Biology » Biology 006 – Genera Biology I » Spring 2021 » Exam 5
Below are the questions for the exam with the choices of answers:
Question #1
A trophoblast
B fertilization
C polyspermal
D polyspermy
Question #2
A It is a rather slow event of embryonic development.
B It is a rather slow event of embryonic development involving consecutive cycles of cell division.
C It forms a blastula.
D It involves consecutive cycles of cell division without cell growth and forms a blastula.
E It involves consecutive cycles of cell division without cell growth.
Question #3
A blastopore
B hypoblast
C fertilization.
D epiblast
Question #4
A not develop if transplanted.
B develop into connective tissue.
C develop into muscle tissue.
D develop into both muscle and epithelial tissue.
E
F develop into epithelial tissue.
Question #5
A a fast block to polyspermy
B hydrolytic enzymes are spilled from the acrosome
C a slow block to polyspermy
D a fusion of the egg and sperm membranes
E the binding of a sperm cell to the egg
Question #6
A fast block polyspermy.
B egg membrane depolarization.
C the embryo to embed into the uterus.
D the sperm to bind to the egg membrane.
E the zona pellucida or vitelline layer to harden.
Question #7
A to trigger the completion of meiosis by the sperm cell and to nourish the oocyte
B to trigger the release of cortical granules and to trigger the completion of meiosis by the sperm cell
C to help propel the sperm toward the egg
D to trigger the release of cortical granules
E to nourish the oocyte
F to digest the jelly coat
Question #8
A slow
B fast
C constant
D moderate
Question #9
A specification
B fertilization
C gastrulation
D cleavage
E induction
Question #10
A The polar bodies bud from this region
B The blastomeres originate only in the vegetal pole.
C The vegetal pole can have a higher concentration of yolk.
D The animal pole cells undergo mitosis but not cytokinesis.
E The posterior end of the embryo forms at the vegetal pole.
Question #11
A to help propel the sperm toward the egg
B to trigger the release of cortical granules
C to nourish the mitochondria of the sperm
D to trigger the completion of meiosis by the sperm cell
E to digest the jelly coat
Question #12
A is produced as a gradient & is required for cell-to-cell contact within the embryo.
B induces blastulation of the developing embryo.
C induces implantation of the embryo into the uterus of mammals.
D that separates out cytoplasmic factors to their respective cells within the developing embryo.
E is produced as a gradient & induces the differentiation of cells within the embryo.
Question #13
A blastocoel
B blastopore
C point of sperm entry
D primitive streak
E archenteron
Question #14
A the entry of sperm DNA into the egg
B the acrosomal reaction
C the slow block to polyspermy
D fast block to polyspermy
E the cortical reaction
Question #15
A V, III, IV, II, I
B IV, III, V, I, II
C V, IV, II, III, I
D IV, V, I, III, II
E III, V, II, IV, I
Question #16
A the cortical reaction
B both the cortical reaction and fast block to polyspermy
C both the acrosomal and cortical reactions
D the fast block to polyspermy
E the acrosomal reaction
Question #17
A neural crest cells in a mammal.
B the lip of the blastopore in the frog.
C polar bodies in a sea urchin.
D the notochord in a mammal.
E the archenteron in a frog.
Question #18
A brain and spinal cord
B the blastocoel
C digestive tract
D reproductive organs
E heart and lungs
Question #19
A induction
B fertilization
C gastrulation
D cleavage
E specification
Question #20
A trophoblast
B amnion
C yolk sac
D allantois
E chorion
Question #21
A differentiate into the brain.
B migrate to many different regions of the body.
C form the notochord.
D form the overlying ectoderm.
E control the segmentation of somatic mesoderm.
Question #22
A protostome
B chromosome
C blastopore
D acrosome
Question #23
A preformation and epigenesis.
B preformation and cell differentiation.
C
D cell division and differentiation.
E preformation and morphogenesis.
F differentiation and morphogenesis.
Question #24
A placental mammal.
B bird.
C reptile.
D fish.
E frog.
Question #25
A acrosomal reaction, binding of sperm to egg membrane, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy
B binding of sperm to egg membrane, acrosomal reaction, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy
C acrosomal reaction, fast block to polyspermy, binding of sperm to egg membrane, slow block to polyspermy, and then an increase in egg cytosolic calcium
D binding of sperm to egg membrane, acrosomal reaction, fast block to polyspermy, slow block to polyspermy, and then an increase in egg cytosolic calcium
E acrosomal reaction, fast block to polyspermy, binding of sperm to egg membrane, increase in egg cytosolic calcium, and then the slow block to polyspermy
Question #26
A FALSE
B TRUE
Question #27
A Notochord
B Epidermis
C Archenteron
D Intestinal tract
E Neural tube
Question #28
A Chorion
B Archenteron
C Notochord
D Epidermis
Question #29
A Discovery of a group of embryonic cells in the dorsal lip that ultimately produce specific body structures.
B Discovery of Spemann’s organizer.
C Identification of a morphogenic field in the dorsal lip of the blastopore of an early gastrula. The development of dorsal structures (neural tube, notochord) on both the dorsal and ventral parts of the gastrula that received the transplant.
D Discovery of a group of embryonic cells in the dorsal lip that ultimately produce specific body structures. The development of dorsal structures (neural tube, notochord) on both the dorsal and ventral parts of the gastrula that received the transplant. Identification of a morphogenic field in the dorsal lip of the blastopore of an early gastrula. Discovery of Spemann’s organizer.
E The development of dorsal structures (neural tube, notochord) on both the dorsal and ventral parts of the gastrula that received the transplant.
Question #30
A cadherins
B HOX genes
C Sonic hedgehog
D apical ectodermal ridge
E zone of polarizing activity
Question #31
A Gastrulation
B Cleavage
C Neurulation
D Fertilization
E Organogenesis
Question #32
A cytoskeleton.
B extracellular matrix.
C transport proteins.
D nucleus.
Question #33
A fish
B bird
C insect
D sea urchin
E amphibian
Question #34
A fertilization.
B preformation.
C cell differentiation.
D histogenesis.
E morphogenesis.
Question #35
A polar cap fusion.
B fertilization.
C autonomous specification.
D organogenesis.
E gastrulation.
Question #36
A preformation.
B gastrulation
C histogenesis.
D hypoblast
Question #37
A occurs within the inner cell mass that is embedded in the large amount of yolk.
B occurs along the primitive streak in the animal hemisphere.
C produces a blastocoel displaced into the animal hemisphere.
D is impossible because of the large amount of yolk in the egg.
E proceeds by invagination and involution as cells roll over the dorsal lip of the blastopore.
Question #38
A FALSE
B TRUE
Question #39
A FALSE
B TRUE
Question #40
A None of the choices are correct.
B cell differentiation.
C cell replication.
D cell growth.
E cell elasticity.
Question #41
A neurulation.
B gastrulation.
C fertilization.
D organogenesis.
E cleavage.
Question #42
A It assesses the quality of a developing embryo.
B It determines hereditable disorders in the embryo.
C It maps the genes of an embryo.
D It determines the ultimate structure/function of a particular cell type during embryonic development.
E It maps the proteins within a morphogenic field.
Question #43
A blastopore
B Acrosome
Question #44
A blastopore
B endometrium.
C blastocoel.
D trophoblast.
E archenteron.
Question #45
A nuclei in an egg.
B cytoplasmic determinants in a zygote.
C nuclei in a zygote.
D nuclei in an early embryo.
E cytoplasmic determinants in an early embryo.
Question #46
A is homogeneously arranged in the egg.
B impedes the formation of a primitive streak.
C prevents gastrulation.
D is concentrated at the animal pole.
E can lead to unequal cleavage of cells in the animal pole compared to those in the vegetal pole.
Question #47
A the central nervous system.
B the archenteron.
C the neural crest.
D somites.
E cells that will form future pigment cells and certain facial bones.
Question #48
A fertilization, gastrulation, neurulation, cleavage, organogenesis
B fertilization, gastrulation, cleavage, neurulation, organogenesis
C fertilization, cleavage, gastrulation, neurulation, organogenesis
D fertilization, cleavage, gastrulation, organogenesis, neurulation
E fertilization, gastrulation, cleavage, organogenesis, neurulation
Question #49
A Only the cell with the gray crescent will develop normally.
B Both cells will die immediately.
C The cell with the entire gray crescent will die.
D Both cells will develop normally because amphibians are totipotent at this stage.
E Both cells will develop abnormally.