Zygote Study guides, Class notes & Summaries

What are the phases of menstrual cycle? - menstruation, follicular phase, ovulation, luteal phase, and ischemic phase. How many hours does an ovum need to be capable of fertilization? - 24 hours. (48 hours the most). Total critical span during sex must occur for fertilization to be successful is - 72 hours or 48 hours before ovulation, plus 24 hours afterward. Eggs are propelled into fallopian tubes (ampulla) by: - fimbriae, peristalsis of tube, and cilia of tube. What is the zona pelluc...

ANSC 3040 Final Questions With Complete Solution 2024 What characterizes an Ootid to go to a Zygote and what is this process called Correct Answer: fusion of the two nuclei to one. called Syngamy What characterizes the change from a Zygote to a 2 cell embryo Correct Answer: the one cell embryo will undergo cleavage and become a 2 cell What are 7 stages of early embryonic development Correct Answer: 1. Ootid 2. Zygote 3. 2-cell embryo 4. Morula 5. Early blastocyst 6. Hatching Blast...

BIOD 121 MODULE 6 EXAM LATEST UPDATED 2024 key developmental stages - Fertilization Blastogenic stage Embryonic stage End of first trimester Fetal Stage Tobacco use can - increase the risk for miscarriage, stillbirth, preterm delivery, and low birth weight infants Alcohol use - is linked to a risk for fetal alcohol syndrome, which results in physical and mental disabilities and growth retardation drug use - increases the risk for low birth weight, preterm delivery, miscarriage...

karyotyping - number and type of chromosome present Barr body - -condensed inactive X chromosome near nucleus of cell -all females have 1 Barr body nondisjunction - failure of chromosomes to separate during meiosis autosomal nondisjunction - -failure of chromosomes (other than sex chromosomes) to separate during meiosis -exs: trisomy 21, trisomy 18 translocation - portion of one chromosome is transferred to another (usually nonhomologous) abnormal egg (XX) x normal sperm (X) - -...

SOPHIA HUMAN BIOLOGY UNIT 5 MILESTONE 5 | A+ Graded Which type of pancreatic cells help to lower blood sugar?  Delta cells  Beta cells  Alpha cells  Gamma cells CONCEPT Pancreatic Hormones 2 After fertilization, the newly formed zygote begins to divide into multiple cells through a process called __________.  Morphogenesis  Cleavage  Blastomere  Gastrulation CONCEPT Fertilization and Early Development

karyotyping - number and type of chromosome present Barr body - -condensed inactive X chromosome near nucleus of cell -all females have 1 Barr body nondisjunction - failure of chromosomes to separate during meiosis autosomal nondisjunction - -failure of chromosomes (other than sex chromosomes) to separate during meiosis -exs: trisomy 21, trisomy 18 translocation - portion of one chromosome is transferred to another (usually nonhomologous) abnormal egg (XX) x normal sperm (X) - -zygote: X...

Transplacental transmission of this pathogen can lead to still births or spontaneous abortions in pregnant women and encephalitis in immune compromised individuals. - Toxoplasma gondii Causative agent of African Trypanosomiasis (Sleeping sickness) - T. brucei Which statement correctly describes parasitism: - Where one member lives in or on another organism at the expense of the host. Which of these characteristics is *NOT* correct for the protozoan parasites? - pseudopodium ...

how many species live in planet Earth? - ANSWER-unknown-roughly 3 to 5 million why is life so incredibly diverse, yet so strangely similar? - ANSWER-organisms can contain similar features. planes have wings, birds have wings-this feature is useful for different things (different for penguins, pelicans, bats, eagles) true or false: biodiversity on earth will likely decrease in the near future? - ANSWER- true or false: scientists believe in evolution even though they currently lack eviden...

BIOS 256 Final Exam 2024/25 what are male gametes? - ANSWER Sperm What are female gametes? - ANSWER Secondary oocytes Embryonic period? - ANSWER From fertilization through the eighth week of development Fetal period? - ANSWER Begins at week 9 and continues on until birth Describe the first trimester? - ...

mollusca body plan shared features -foot: mass of muscle tissue used for movement and/or manipulation -visceral mass: clump that contains most of the organs -mantle: tissue that drapes over the organ clump and secretes the shell in shelled members 4 characteristics shared by all animals -eukaryotic- membrane bound nucleus and organelles -multicellular -heterotrophic- consumes food to get energy -have tissues that develop from embryonic layers (germ layers) germ layer formation step 1 spe...