Polyspermy Study guides, Class notes & Summaries

1) Within a sperm cell, what is the function of an acrosome? - Answer- Contains enzymes needed to penetrate egg cells 2) How do membrane proteins on both an egg and a sperm cell function to keep fertilization species-specific? - Answer- A fragment from the egg-wall receptor binds to bindin proteins on the sperm only if it is the same species 3) Explain the steps of the acrosomal reaction. - Answer- i. Sperm Contacts jelly layer ii. Reaction begins: Release of digestive enzymes and extens...

true or false: animals all share a similar development due to the use of similar regulatory genes that are turned "on" and "off" in similar order. - Answer- true regulatory genes - Answer- genes that control gene expression the release of the contents of cortical granules - Answer- -occurs after a single sperm cell enters the egg -in some animal species: causes the jelly layer of the egg to physically change and lift away. cortical granules - Answer- Vesicles that begin just under...

Embryology Practice Questions with Answers 1. The part of the sperm containing proteolytic enzymes to digest the zona pellucida is the: A. capacitor B. head C. corona D. acrosome E. cumulus - D. is correct. The acrosome is the part of the sperm containing proteolytic enzymes to digest the zona pellucida. It is exposed by the process of capacitation. Then, under the influence of substances released by corona radiata cells, it releases its proteolytic enzymes and penetrates the oocyte....

Test Bank 1-2 Schoenwolf et al.: Larsen's Human Embryology, 5th Edition Chapter 1: Gametogenesis, Fertilization, and First Week Test Bank MULTIPLE CHOICE 1. A child with a large sacrococcygeal teratoma is delivered by cesarean section. The teratoma likely arose from which type of cells? A. Neuroectodermal stem cells B. Neural crest cells C. Primitive streak cells D. Primordial germ cells E. Secondary oocyte cells ANS: D 2. A baby is diagnosed with Down syndrome shortly after birth....

Embryology Test Questions and Answers with complete solution

1 VETA 105 - EARLY EMBRYOGENESIS: GAMETOGENESIS; FERTILIZATION; CLEAVAGE EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ 3 Early stages in the embryonic development Correct Answer: Gametogenesis Fertilization Cleavage 2 types of Gametes or sex cells Correct Answer: 1. ovum or female gamete or egg (oogenesis) 2. spermatozoon or male gamete (spermatogenesis) • Able to survive in environment different from the gonad • Recognize the other cell - during fert...

Embryology Exam | Actual Questions with Answers| updated 2023/24 1. The part of the sperm containing proteolytic enzymes to digest the zona pellucida is the: A. capacitor B. head C. corona D. acrosome E. cumulus - D. is correct. The acrosome is the part of the sperm containing proteolytic enzymes to digest the zona pellucida. It is exposed by the process of capacitation. Then, under the influence of substances released by corona radiata cells, it releases its proteolytic enzymes a...

1. The part of the sperm containing proteolytic enzymes to digest the zona pellucida is the: A. capacitor B. head C. corona D. acrosome E. cumulus D. is correct. The acrosome is the part of the sperm containing proteolytic enzymes to digest the zona pellucida. It is exposed by the process of capacitation. Then, under the influence of substances released by corona radiata cells, it releases its proteolytic enzymes and penetrates the oocyte. 2. The ovulated mammalian oocyte is arre...

Biology Praxis II 5235 Exam 2023 taxonomy categories in order? - Answer-Domain, kingdom, phylum, class, order, family, genus, species Did King Phillip Cry Out "For Goodness Sakes!" human taxonomic levels? - Answer-Animalia, chordata, Mammalia, primatae, hominidae, homo sapiens "All cool men prefer heavy sideburns" phases of mitosis? - Answer-Interphase, prophase metaphase, anaphase, telophase I-PMAT 7 characteristics of all animals? - Answer-movement, reproduction, sensitivity, ...

WSU BIO 106 FINAL EXAM Apoplast vs symplast - Apoplastic route water and solutes move along the continuum of cell walls and extracellular spaces 3 main tissues of a plant - dermal, vascular, ground Root developed in response to low o2 - pneumatophores What is not a plant hormone - secretin phototropin/phytochrome - These receive red light and control plant morphology sclerenchyma vs parenchyma cells - Sclerenchyma: dead, provide stability Parenchyma: Living cells, p...