Fertilisation Study guides, Class notes & Summaries

HSC Biology Module 5 Reproduction Reproductive success The ability to produce fertile offspring that survive to reproductive maturity and produce offspring of their own. Biological fitness the measure of an individual's reproductive success. It is calculated as the average contribution to the gene pool made by a certain genotype within a population and the relative likelihood that these alleles will be represented in future generation. Sexual reproduction It involves the meet...

Describe the events of fertilisation that occur after the acrosome reaction. -Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane -Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in towards the centre of the bilayer Describe the role of the CFTR protein in e...

What are the 3 phases of the first stage of labour? - Answer Latent phase - 0-4cm, irregular contractions, cervical canal shortens (3cm to less than 0.5cm). Active phase - 4-8cm, regular contractions 2-5 mins apart and lasting over 60 seconds, cervix is mid to anterior/soft, effaced. Transitional - 8-10cm, can be brief lull in contractions, change in woman's behaviour. Where does fertilisation usually occur? - Answer Ampulla of the uterine tube. What is the dosage of diamorphin...

BIOSCI 210 Species Concepts and Speciation Exam Questions and Answers 100% Pass Species (Charles Darwin) - Correct Answer ️️ -set of individuals closely resembling each other - knew than an understanding of variation within and between specials was critical for taxonomy and evolution Species (Modern Synthesis) - Correct Answer ️️ -species are fundamentally different from the taxa about and below them in taxonomic hierarchy Species (Folk Concept) - Correct Answer ️️ -Individu...

Two types of cells - correct answer - Eukaryotic (complex) - Prokaryotic (smaller and simpler) Animal cell - correct answer -nucleus -Cytoplasm -Membrane -Mitochondria (Involved In Reactions For Respiration) -Ribosomes (Involved in protein synthesis) Plant Cell - correct answer - cell wall - chloroplasts (chloryphyll, photosynthesis) - center vacuole (maintains cell pressure) Bacteria Cell - correct answer - no nucleus - plasmid dna (small loops) - flagella (tail) - cell ...

2023 AQA GCSE COMBINED SCIENCE: SYNERGY 8465/1F Foundation Tier Paper 1 Life and Environmental Sciences Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] GCSE COMBINED SCIENCE: SYNERGY F Foundation Tier Paper 1 Life and Environmental Sciences Tuesday 16 May 2023 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have: ⚫ a ruler ⚫ a protractor ⚫ a scientific calculator ⚫ the periodic table (enclosed) the Physics Equations Sheet (enclo...

There are two types of reproduction: • sexual reproduction • asexual reproduction. . Complete Table 1 to compare sexual reproduction with asexual reproduction. Write a tick ( ) in the box if the statement is true. The first row has been completed for you. [2 marks] Table 1 Sexual reproduction Asexual reproduction Cell division occurs Fertilisation occurs Genes are passed on from parent to offspring Offspring are genetically identical to each other ...

HUBS1406 Practice Quiz – Reproduction with Complete Solutions HUBS1406 Practice Quiz – Reproduction with Complete Solutions HUBS1406 Practice Quiz – Reproduction with Complete Solutions The organ that carries sperm from the epididymis to the urethra is the: - ANSWER-ductus deferens. Pressure on the cervix late in pregnancy causes an increase in the blood levels of: - ANSWER-oxytocin Select the correct statement about the uterine cycle: - ANSWER-If fertilisation occurs, the...

AQA GCSE Biology Inheritance Gametes sex cells Gametes are made by Meiosis Meiosis Produces non identical cells Sexual reproduction -Involves the fusion of Male and female gametes (fertilisation) -mixing of genetic information so we can see variation in offspring Asexual reproduction -one parent -does not involve gametes and no mixing of genetic information -offspring are identical -only involves mitosis Clones identical genetic copies Meiosis -all chromosomes are copied -cell divi...

BIOSCI 210 Species Concepts and Speciation Exam Questions and Answers 100% Pass Species (Charles Darwin) - Correct Answer ️️ -set of individuals closely resembling each other - knew than an understanding of variation within and between specials was critical for taxonomy and evolution Species (Modern Synthesis) - Correct Answer ️️ -species are fundamentally different from the taxa about and below them in taxonomic hierarchy Species (Folk Concept) - Correct Answer ️️ -Individu...