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LINKS to more puzzles: Chapter 1 Chapter 2a Chapter 2b Chapter 3a Chapter 3B Chapter 4b Chapter 5a Chapter 5b |
LINKS to related sites: aCross Development home page: Tosney home page Society for Developmental Biology Gilbert’s textbook home page Sinauer |
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1 the ___ block to polyspermy is a change in the electrical properties of the egg membrane 4 mature egg, which has a haploid nucleus and all the material necessary to begin growth and development 7 the _a_t block to polyspermy is transient 9 after sperm fusion, microfilaments extend egg microvilli to form the fertilization ___ 11 midwestern state 12 _ _ _ _spermy is the entry of multiple sperm into the egg; 14 ____ granules contain enzymes and proteins important to block polyspermy and support cleaving cells; they fuse with the egg plasma membrane and release their contents 18 the _ _cyte is the term for the developing egg before it becomes haploid 19 sperm-activating _ _ _tide is a diffusible molecule like "resact" : it binds to sperm, and increases their motility 22 during fertilization the plasma membranes of egg and sperm will j_ _ _ or fuse, releasing the sperm nucleus into the egg cytoplasm 23 call letters 24 egg jelly activates the ___ reaction in marine invertebrate sperm 27 morphogenetic fact_ _ _ in different regions of the egg will segregate into different cells and direct differentiation 29 negative 30 sperm differentiate in the testes, but acquire the ability to _____ while they reside in the epididymis 31 the combining of genes derived from the two parents; a developmental biologist's definition of this common process 33 the ___ pellucida is a thickened vitelline membrane composed of thick extracellular matrix; it is typical of mammals 34 _ _erm are transferred to the oviduct largely by uterine muscular activity rather than by active swimming 35 the ___ reaction is a modified cortical granule reaction in mammals 37 type of fish 39 functions to transmit genes from parent to offspring 45 after the cortical reaction, additional sperm entry is _ _ _e or nonexistent 46 _ _K is a mouse sperm kinase that binds to zona pellucida proteins; it may initiate the mouse acrosome reaction by phosphorylating target proteins 48 this type of nuclei acid chain lies dormant until after fertilization 50 initially thought to be parasitic organisms in the semen; spell it without a vowel 52 not difficult 54 _ _ _ _ _duction is the creation of new organisms 55 a type of cherry 57 one ___(function) of fertilization is to transmit genes from parent to offspring; another is to initiate in the egg cytoplasm those reactions that permit development 58 _ _ _ _ _filaments are necessary for cells to divide or extend microvilli 59 _o_ospermy is a normal situation in which one sperm enters the egg and the haploid nuclei fuse 60 formerly thought to contain a "homonuclus", a preformed being 64 in the z_ _ _ reaction, a fertilization membrane doesn't form 65 the ___ vesicle is a structure in sperm derived from the Golgi apparatus; it contains enzymes to lyse the outer egg surface 66 mechanical, permanent block to polyspermy Top |
1 _ _llicular cells nourish the developing egg and then form the cumulus 2 the _xo_eme is a major portion of the flagellum 3 a _p_rm contains a bag of enzymes to enter the egg. 5 place where the author of these puzzles works, abbrev 6 _ _ _ _ _filaments are intracellular cables formed by polymerizing actin 7 cumulus cells are a layer of ovarian _ _llicular cells that remain around the egg after ovulation 8 the ___ block to polyspermy is due to cortical granule fusion with the egg plasma membrane 9 for final maturation or _ _ _ _ _ _tation, mammalian sperm must reside in the female reproductive tract for some time before they can bind to and fertilize the egg 10 indicates an unhappy cow 12 the ___ membrane regulates ion flow in the egg 13 add a u for yourself 15 the cortex is a thin region of cytoplasm along the ___ (edge) of the egg, adjacent to the membrane 16 a type of music, anagram 17 egg jelly activates the _ _ _osomal reaction in marine invertebrate sperm 20 enzymes released from the cortical granules will dissolve the vitelline posts that conn_ _t the vitelline envelope to the cell membrane; as water rushes in, the envelope expands and forms the fertilization envelope 21 substances in the oviducts can hy_e_activate sperm, greatly increasing their activity 25 number of cells in a bird's egg before fertilization 26 white ___, a team 28 the acrosome and nucleus constitute this part of the sperm 31 the flagellum is a complex motile structure that many of these use to move; a few others lack flagella and move by crawling 32 proteins and other materials stored in the egg to supply energy and animo acids 33 two of the last sandwiching one of the first 34 Californian city 35 _ _lch; zero 36 dy_e_n is a protein attached to microtubules in flagella that provides force for propulsion 37 during the ___ granule reaction, the vitelline membrane alters into the fertilization membrane and attached sperm are released 38 ZP-3 is a protein _ _ the mouse zona pellucida that binds sperm and then initiates an acrosome reaction (preposition) 40 if more than one sperm enters the egg, the embryo will _ _ _ely develop normally 41 ribosomes and _ _ _A are stored in the egg for protein synthesis 42 the _ _ _ _somal process is a finger-like extension of sperm proteins that emerges early in fertilization 43 an obvious difference between sperm and egg is the difference in s_ _e; the sperm loses most of its cytoplasm while the egg stores many components 44 contains a haploid nucleus 47 the _ _ _ _te is the diploid, fertilized egg 49 egg jelly activates the _c_osome reaction in marine invertebrate sperm, causing extension of the _c_osomal process 50 initially thought to be parasitic organisms in the semen 51 the fast block to polyspermy will _ _ecede the slow block 53 ___ pellucida is a thickened vitelline membrane typical of mammals 55 _ _ _din_ are acrosomal proteins that mediate species-specific recognition between sea urchin sperm and eggs (plural) 56 of the layers around the egg, the vitelline membrane forms an in_e_ layer, connected to the plasma membrane 58 che_ _taxis (attraction) is important in the sea urchin, Arbacia punctulata, where the eggs release a diffusible chemical, resact, to attract sperm 60 the _l_w block to polyspermy is due to cortical granule fusion with the egg plasma membrane 61 the _la_ma membrane regulates ion flow in the egg 62 the zona reaction would occur in p_ _ple during fertilization 63 _RN_ is present in the egg but lies dormant until after fertilization |
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