What is polyspermy and how is it achieved or inhibited in human fertilisation? Using a flowchart illustrate the positive feedback mechanism that occurs during (i) lactation and (ii) parturition
Q: Order the following levels of biological organization of humans from the most specific (1) to the…
A: Biological organization refers to the hierarchical classification of living organisms from the most…
Q: explain this cactus mutation
A: Introduction: mutation is a change in the DNA sequence of an organism. Cresting succulent…
Q: Briefly write on the characteristics and benefits of Healthcare Information System
A: A health information system is basically a system of different processes.This system mainly works to…
Q: what are the 3 scientific names for e coli bacteria and cactus
A: Scientific name are the names of living species derived from binomial naming system. The names are…
Q: How does the Spotted Lanternfly impact abiotic factors in the ecosystem?
A: Introduction An ecosystem is an area where different species of plants, animals, as well as other…
Q: How do you know when an area reaches its climax community? What would you want to see in that area…
A: ANSWER: A community is said to have reached climax when it has stabilised and has not undergone any…
Q: Explain the difference(s) that exist between Monocots & Dicots in the Table below: Monocots Dicots
A: Monocotyledons, also known as monocots, are flowering plants (angiosperms) that resemble grass and…
Q: a) Give one example of where active transport is used within the body and explain the mechanism of…
A: Introduction As we know cell membrane is semipermeable and it allows movement of various molecules,…
Q: Which of the following cannot be seen by astronauts in the International Space Station with their…
A: Space research has many benefits for humanity. One of the main benefits is that it allows us to…
Q: 4. In humans, brown eye color (B) is dominant to blue eye color (b). A woman who is homozygous…
A: An allele is one of two or more variations of a certain gene. A dominant allele can only show itself…
Q: for nature science taxomonist step 1: what are the job oppurtunitites fo it step 2: Why would…
A: Taxonomy is basically a branch of biology.This branch deals with the classification and…
Q: Discuss the differences between conventional T cell therapy and Chimeric Antigen Receptor (CAR) T…
A: Introduction: Strategies for cancer treatment and medical research are continually changing to…
Q: The peppered moth, Biston betularia, occurs as light- or dark-colored variants. Prior to the…
A: Directional selection is a type of natural selection in which a certain trait or characteristic…
Q: Case Study: A 24-year-old woman notes vaginal itching and irritation with a slight discharge.…
A: Gardnerella vaginalis is a gram-negative, facultative anaerobic rod-shaped bacteria that is commonly…
Q: Question: Suppose the progeny were crossed. Fill in the Punnett Squares below and answer the…
A:
Q: The component giving wood its stiffness in compression is a. lignin O b. extractives O c. cellulose…
A: This question explores the components that give wood its stiffness in compression. It looks at the…
Q: Why don't protists (eg. sponges) need circulatory systems? Question 12 options: None of their…
A: Protists are a diverse group of eukaryotic organisms that are found in nearly every habitat on…
Q: 1. In pea plants, round seeds (R) are dominant to wrinkled seeds (r). A homozygous dominant plant…
A: The genotypes of a specific cross or breeding experiment are predicted using the Punnett square, a…
Q: Briefly describe the differences in respiratory needs and structures used for gas exchange in the…
A: Respiration is a metabolic process that all organisms go through. It is a biochemical process that…
Q: 4) Explain why the edema of tissues does not appear if it was stated that the filtration force which…
A: Capillaries are the smallest blood vessels in the body and play a crucial role in the exchange of…
Q: Fertilized, unfertilized, and mammilated coat eggs of O O Strongyloides stercoralis Necator…
A: Some parasites can also cause severe allergic reactions, such as itching, rashes, and respiratory…
Q: what would bea good biology career for learning about phylogeny and modern taxonomy
A: 1.Phylogeny: It is mainly the evolutionary relationship between different groups of organisms and…
Q: Influence of buffer capacity and pH on tissue irritation
A: Knowledge of tissue behavior is essential for the diagnosis and treatment of diseases. By…
Q: 5. What is the size of coronavirus (any black arrow)? Scale bar = 100nm 7cm 70AM sonm 1cm
A: Introduction A microscope is an instrument by which we can observe very small object which we can…
Q: Hypothesis Generation and Experimental Design Green sea turtles spend most of their lives in the…
A: The various research and experiments are conducted by studying the relationship between the two…
Q: determine all the types of mutations and mention if they are harmful or not and why?
A: There can be errors in DNA which can lead to protein dysfunction or misfolding. These errors are…
Q: Blood volume in an organism, structure of blood, hematocrit
A: Introduction: Blood: liquid that moves carbon dioxide and other waste items away from the body and…
Q: In this diagram, which of the following is TRUE? H H+ (proton). Organic molecule that includes two…
A: Oxidation-reduction (O-R) reactions are very important reactions in cellular metabolism. The…
Q: Define terebinthinate
A: introduction: The word turpentine is derived from the Greek word terebinthine, which is also the…
Q: Suppose a 10-year old patient has come to your office with a very rare disease. One so rare that…
A: Rare diseases - Diseases which affects very small percentage of population. Gene sequencing - It is…
Q: Are healthcare policies effective over time?
A: Healthcare policies are rules and regulations that are made in order to achieve certain healthcare…
Q: In Dr. Kettlewell's peppered moth experiment, what was the DV?
A: Dependant variables (DV): The variable being measured or tested in an experiment is known as the…
Q: Case Study: A 24-year-old woman notes vaginal itching and irritation with a slight discharge.…
A: Bacterial vaginosis (BV) is a common condition in which the balance of bacteria in the vagina is…
Q: Evaluate why development and discovery of drugs to target bacterial cells has resulted in a larger…
A: The development and discovery of drugs to target bacterial cells has led to a wide range of…
Q: According to the reading, did Yellowstone National Park reach its climax community in the year of…
A: A climax community is considered to be the final stage in the succession of an ecosystem. It's a…
Q: discuss in detail about indicator microorganizm.
A: Introduction Microorganisms, for instance, bacteria and the viruses which are present in the water…
Q: Problem #1 In some chickens, the gene that produces color shows incomplete dominance. The gene will…
A: Incomplete dominance results from a cross in which each parental contribution is genetically unique…
Q: explain what a bootstrap value is and why the information it provides is useful.
A: bootstrap value is the proportion of replicate phylogenies that recovered a particular clade from…
Q: describe how named soluble mediators of the immune system can be generated or triggered, and what…
A: Introduction:- Immunity is defined as the ability of an organism to resist any kind of infection or…
Q: Which of the following statements is most correct? The electron transport chain - A: generates a…
A: Electron transport chain is a group of proteins Which transfer electrons through the mitochondrial…
Q: Discuss why it has been suggested that in the future obesity may be treated with antimicrobial…
A: Obesity become a major health issue and can lead to various health problems such as heart disease,…
Q: Difference between Capsule and Microcapsule in bacteria.
A: A capsule is a viscous material that surrounds the cell wall of some bacteria and forms a protective…
Q: Mendel's law
A: Gregor John Mendel is called the father of genetics as he give his famous three laws of genetics…
Q: What is the definition for “greenhouse gas” ?
A: Carbon dioxide is an inorganic biomolecule composed of two oxygen atoms that form a double bond with…
Q: Explain the viral and immunological mechanisms for the Herpes Simplex Virus responsible for their…
A: Viral infection are mostly identified when these viruses can cause a disease inside the host body.It…
Q: Action Potential In-Class Assignment 01/07/2021 The plot on the right-hand side is a conductance…
A: In a voltage clamp experiment, an experimenter applies a specific voltage to the cell and holds it…
Q: Design a novel drug for treatment for overactive bladder syndrome which does not target the…
A: Introduction Overactive Bladder Syndrome or OAB is a medical condition in which the ability of the…
Q: epidemiological studies are applied to the control problems in communities? True False
A: Answer: Epidemiology : It is the study to find the causes of health issues and diseases developing…
Q: Chlamydia trachomatis is an obligate intracellular pathogen. Discuss the interactions this microbe…
A: Chlamydia are gram negative obligate intracellular bacteria. As they lack peptidoglycan therefore…
What is polyspermy and how is it achieved or inhibited in human fertilisation?
Using a flowchart illustrate the positive feedback mechanism that occurs during (i) lactation and (ii) parturition
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- what is the purpose of calcium ion in fertilization?Name the 3 components of the blastocyst at the time of implantation and what into what do they develop? What is polyspermy and how is it achieved or inhibited in human fertilisation? Using a flowchart illustrate the positive feedback mechanism that occurs during (i) lactation and (ii) parturitionhCG, estrogen and progesterone are hormones that are secreted throughout pregnancy. Answer the following questions about these hormones. 1) What structure initially secretes estrogen & progesterone? 2)What structure takes over the role of secreting hCG, estrogen & progesterone in the second and third trimesters?
- Describe the main actions performed by oxytocin. Why parturition can occur without elevated levels of plasma oxytocin?Which of the following statements does NOT correctly describe the events following fertilization? Select one: a. Only the inner cell mass cells in a blastocyst are pluripotent. b. The trophoblast has an important role in maintaining the pregnancy, as it prevents the endometrium from shedding. c. As hCG takes over maintaining the endometrium immediately after implantation, the corpus luteum degenerates into the corpus albican. d. All 16 cells in a morula are truly totipotent, meaning that they can become any cells in the human body.Explain the relationship of the following pairs of terms. Briefly explain its relations 1.) Positive Feedback and oxytocin 2.) Negative Feedback and insulin 3.) Ovary and estrogen 4.) Testis and testosterone 5.) Neuron and nerve impulse
- Describe TWO positive feedback loops that are part of parturition and/or lactation. For each pathway, identify the mechanism that triggers the response, the glands, and the hormones involvedSometimes the egg and sperm fail to meet and conception does not take place. What are the leading causes of infertility in humans, and what procedures are being used to circumvent these blocks?If one follows 50 primary oocytes in an animal through theirvarious stages of oogenesis, how many secondary oocytes wouldbe formed? How many first polar bodies would be formed? Howmany ootids would be formed? If one follows 50 primary spermatocytes in an animal through their various stages of spermatogenesis, how many secondary spermatocytes would beformed? How many spermatids would be formed?
- Discuss the mechanism of action of the oxytocin? How does it facilitates uterine contraction especially to birthing mothers?Describe the development of reproductive organs in a fetus of each gender. Which genes, gene products, and hormones are involved in the sex differences? Which sex- related hormones are circulating in high concentrations in a pregnant woman compared to a nonpregnant woman? Do these hormones cross the placenta (if you are uncertain, consider hormone chemical class relative to membrane permeability to make an educated guess)? Assuming these hormones do cross the placenta, how do they affect the hormonal environment inside the fetus, and how does this relate to fetal reproductive development?If one follows 32 primary oocytes in an animal through their various stages of oogenesis, how many secondary oocytes would be formed? How many first polar bodies would be formed? How many ootids would be formed? If one follows 32 primary spermatocytes in an animal through their various stages of spermatogenesis, how many secondary spermatocytes would be formed? How many spermatids would be formed? Secondary oocytes First polar bodies Ootids Secondary Spermatocytes Spermatids