The zygote is split into the blastula after fertilization. The three germ layers develop in the blastula, which in some species is a hollow ball of cells, during a process known as gastrulation.
Fertilization :
The majority of animal reproduction is comparable to human reproduction. Additionally, animals create gametes for fusion. Gamete fusion, however, can happen inside or outside of the body.
Type of fertilization :
internal and external fertilization.
How does fertilization work, for insinstance ?
A reproductive technique that involved joining a male and a female germ cell—each with a single, haploid pair of chromosomes—to produce a diploid cell known as a zygote.
Pre-embryo is a collection of blastomeres formed by cleavage divisions.
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Answer:
the correct answer is b. cleavage division
Explanation:
Guinea pigs can produce differect coat colors, white, brown, and mixed white/brown (agouti). THe allele B is codominant with allel W (white coat). Cross an agouti colored Guinea pig with a brown Guinea pig. What are the odds of the offspring; 1/2 homozygous white, 1/2 heterozygous brown; 1/4 homozygous brown, 1/2 heterozygous agouti, 1/4 white; 1/2 heterozygous brown, 1/2 homozygous agouti; 1/2 homozygous brown, 1/2 heterozygous agouti.
In codominance, two alleles can be simultaneously expressed. The correct option is D. 1/2 homozygous brown (BB), 1/2 heterozygous agouti (BW).
What is codominance?Codominance is an inheritable pattern in which two alleles can be simultaneously expressed.
In these situations, heterozygous individuals can express two phenotypes, each of them coded by one allele.
Heterozygous individuals' phenotype is an additive expression of their parents' genes.
In the exposed example, coat color are white, brown and agouti (mixed).
Allele B codes for brownAllele W codes for whiteGenotype PhenotypeBB Brown
WW White
BW Agouti
Cross: Agouti pig with brown pig
Parentals) BW x BB
Gametes) B W B B
Punnett square) B W
B BB BW
B BB BW
F1) 50% of the progeny is expected to be homozygous BB and express brown coat color
50% of the progeny is expected to be heterozygous BW express agouti coat color
The correct option is then option D. 1/2 homozygous brown, 1/2 heterozygous agouti.
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why is the reason a virus can't infect a plant? plants have cells too right? so why?
Virus are able to infect plants therefore the reason a virus can't infect plant is because it's not a plant virus.
What is plant viruses?These are viruses that are capable of infecting plant cells and causing a harmful effects on them. These viruses are however different from animal viruses.
Example of plant viruses include:
Potato virus and Cucumber mosaic virus.Therefore, the reason a virus can't infect plant is because it's not a plant virus.
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A virus can infect a plant, plants also have cells, and specific viruses can infect them.
What are plant viruses?The definition of plant viruses includes all species of the pathogen that must be housed in plant species in order to be able to develop and multiply. Sometimes these viruses can cause disease in their hosts, depending on the health status of the crops.
With this information, we can conclude that all species of the pathogen that must be housed in plant species to be able to develop and multiply are phytoviruses.
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n
3
Read the excerpt from Jane Eyre by Charlotte Brontë.
My head still ached and bled with the blow and fall I
had received: no one had reproved John for wantonly
striking me; and because I had turned against him to
avert farther irrational violence, I was loaded with
general opprobrium.
"Unjust!-unjust!" said my reason, forced by the
agonising stimulus into precocious though transitory
power.
What does John's attack of Jane most likely represent
about the human condition?
O cruelty toward the defenseless
O conflict between family members
O the victory of emotion over reason
O the power of the rich over the poor
The thing which John's attack on Jane most likely represents about the human condition is C. the victory of emotion over reason
What is a Narration?This refers to the use of a narrator to show the sequence of events and how they occurred in a given plot.
Hence, we can see that from the given narration, there is a description of the attack which the narrator had faced from John and how when she wanted to retaliate, her reason tried to stop her from engaging in further violence.
This shows the victory of emotion over reason as she did strike back when her emotions goaded her into taking action by stating that it was a shameful thing.
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What is it called when one hormone helps another have its full effect?
Answer:
it is called permissive interaction
Explanation:
Answer:
In endocrinology, permissiveness is a biochemical phenomenon in which the presence of one hormone is required in order for another hormone to exert its full effects on a target cell.Ram gives his dog a piece of bread to eat. The dog picks it up and starts eating. Which of the following organ systems of the dog is active when it eats the bread?
1. digestive system
2.nervous system
3.skeletal system
A. only 1
B. only 1 and 2
C. only 1 and 3
D. all -1, 2 and 3
Answer:
D, all 3.
Explanation:
The nervous system sends a message to the nerves in the dog's bones (which are a part of the skeletal system) to pick up the food. The digestive system breaks down the food.
The organ systems of the dog that is activated when it eats the bread are the digestive, nervous, and skeletal system. Thus, the correct option is D, i.e. all of the above.
What is an Organ System?An organ system may be defined as a cluster of organs that work together to perform specific bodily functions significantly.
When a dog eats bread, the digestive system converts this piece of bread into simpler substances that are absorbed by the small intestine. This is the direct function of the organ system.
Apart from the digestive system, the nervous system sends the message through the impulse to the bones which are part of the skeletal system to grab the nutrients as well as energy for them.
Therefore, the correct for this question is D.
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Consider this animal cell. the organelles in an animal cell are labeled. part e represents small dots on the nucleolus. what is the function of the small, dark organelles labeled e?
Part e represents small dots on the nucleolus. The function of the small, dark organelles labeled e is that they make proteins for the cell. hence the small dots represent Ribosomes.
The process of protein formation in the cell is translation. Amino acids are assembled on the ribosome and a Mrna fragment decodes the amino acid codes and adds the amino acids. This forms a polypeptide chain.A ribosome is a tiny organelle that participates in the production of proteins, also known as protein synthesis. The second stage of protein synthesis, translation, is managed by the ribosome. Ribosomes can be found connected to rough endoplasmic reticulum or floating freely in the cytoplasm.learn more about ribosomes here: https://brainly.com/question/8773679
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industrialisation and urbanisation cause environmental imbalance why
Answer:
Because industrialization and urbanization often advance in an uncontrolled or unorganized way in developing countries, they can have destructive effects on the environment, particularly on basic ecosystems, wildlife habitat, and global biodiversity.
I'm not good at this.Can someone solve this?
Answer:
While the adult carp prefer slow moving water, they look for high, fast moving water when laying eggs (spawning). They lay hundreds of thousands of eggs at a time, which means populations grow and spread quickly. Because of this, they can quickly out-compete native species, and put ecosystems in danger.Carp are also thought to lower water quality, which can kill off sensitive organisms like native freshwater mussels.Asian carp cause serious damage to the native fish populations in the lakes and rivers that they infest because they out-compete other fish (video, 1 min) for food and space. Carp are also thought to lower water quality, which can kill off sensitive organisms like native freshwater mussels.A seed was discovered and, when planted, grew to be a large flowering plant.
A seed was discovered and, when planted, grew to be a large flowering plant because it belongs to angiosperm family.
What is angiosperm?Angiosperms are plants that produce flowers and seeds in fruits. They are the largest and most diverse group within the kingdom Plantae having about 300,000 species. Angiosperms represent about 80 percent of all plants.
So we can conclude that a seed was discovered and, when planted, grew to be a large flowering plant because it belongs to angiosperm family.
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The seed belongs to a plant in the angiosperm group.
What are angiosperms?Angiosperms are seed-producing, flowering plants.
Angiosperms are different from gymnosperms in that gymnosperms produce seeds that are not enclosed.
Angiosperms produce seeds that are enclosed in fruits.
Both angiosperms and gymnosperms belong to a group of plants known as Spermatophyta.
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define wetlands.please give me the answer
Answer:
Wetlands are areas where water covers the soil, or is
present either at or near the surface of the soil all year or
for varying periods of time during the year, including during
the growing season.
land consisting of marshes or swamps; saturated land.
Hello!
Wetlands can be defined as :
[tex]\fbox {Areas where water is present in the soil during all times of the year.}[/tex]
The most common cause of this electrolyte imbalance is dehydration.
A person may experience an electrolyte imbalance if they get dehydrated or have too much water in their system. Vomiting is the most frequent cause of an electrolyte imbalance. diarrhea.
What function does the electrolyte serve in the body?When dissolved in water, chemicals known as electrolytes acquire a natural positive or negative electrical charge. They support your body's ability to control chemical processes and maintain the proper balance of fluids within and outside of your cells.
During strenuous activity, drink enough of water to prevent electrolyte imbalance. Eat an electrolyte-rich diet that is balanced. Avoid doing any strenuous outdoor exercise when it's hot outside.
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What is sampling error, and how can scientists reduce this type of error?
Sampling error is a kind of experimental error that occurs when statistical characteristics of a population are estimated from a sample.
For example, the difference between a population mean and a sample mean is referred to as sampling error.
Scientists can reduce sampling error by taking observations from population rather than just a subset of the population.
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his nutrient is cycled between living things and the soil. Plants absorb this nutrient from the soil and turn it into organic compounds through assimilation. Animals eats the plants and pass the nutrient through the food chain from one organism to another. When the animal dies, it decomposes and returns the nutrient back to the soil. The nutrient can also enter the soil through weathering and erosion.
The nutrient is phosphorus
The phosphorus cyclePhosphorus cycles between living components of the earth (biosphere) and the soil (geosphere).
The element's reservoir is mainly the sediments of the ocean and rocks. Phosphorus gets into the soil by weathering of rocks.
Plants are able to pick the element up from the soil and animals are able to get their phosphorus by consuming plants.
When plants and animal die, their body decomposes and the phosphorus in them enters the soil.
Thus, the cycle being referred to in the illustration is the phosphorus cycle.
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Answer:
c,a,b
Explanation:
How is glucose different from glycogen?
Glucose is used immediately for energy in the cell while glycogen is stored in the liver for later use as energy.
Glucose and glycogen are both stored in the liver, but glucose is used first for energy, then glycogen.
Both are stored in the cell, but glucose is used first for energy, then glycogen.
Glucose is different from glycogen as Glucose is used immediately for energy in the cell while glycogen is stored in the liver for later use as energy. Thus, the correct option is A.
What is Glycogen?Glycogen may be defined as the reserved form of glucose that is constructed up of many interconnected glucose molecules.
When the cell needs immediate energy to accomplish metabolism, they directly use glucose for it, but while energy is not needed by the cell, then glucose is stored in the liver and muscles in the form of glycogen.
Therefore, Glucose is different from glycogen as Glucose is used immediately for energy in the cell while glycogen is stored in the liver for later use as energy. Thus, the correct option is A.
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Observations:
Record any observations about the cells you observed. What does the cell look like for each
stage? What is a distinguishing visible feature of each stage of the cell cycle?
Stages
Description of Cell
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
20 kids in class 1 infected how many will be infected with disease out of 20 kids
Answer:
20:20=x:1
20/20=x/1
20=20x
20/20=20x/20
1=x
How does recombination affect genetic variation in future generations?
Jolana wants to know more about the role plants play in the carbon cycle. What can she infer from the diagram below?
A. Plants use carbon dioxide for photosynthesis and give off carbon dioxide when they perform cellular respiration.
B. Plants use sugars and water for photosynthesis and give off oxygen when they perform cellular respiration.
C. Plants take in carbon in the form of minerals through their roots and release it as water in the atmosphere.
D. Plants use oxygen for photosynthesis and give off oxygen when they perform cellular respiration.
A 29-year-old female develops sepsis and, as a consequence, she experiences profound
vasodilation.
a) What effect does vasodilation have on the afterload? Explain why.
b) What effect does vasodilation have on blood pressure? Explain why. How will her body try
to bring her blood pressure back to homeostasis?
Vasodilation have positive effects on the afterload and blood pressure.
What effect does vasodilation have on the afterload?Vasodilation have positive effects on the afterload because afterload goes down when aortic pressure and systemic vascular resistance decreases through vasodilation.
What effect does vasodilation have on blood pressure?Vasodilation is a mechanism which occurs in order to enhance blood flow to areas of the body that are lacking oxygen and nutrients. The vasodilation causes a decrease in systemic vascular resistance (SVR) and an increase in blood flow that results in reducing blood pressure.
How will her body try to bring her blood pressure back to homeostasis?Her body try to bring her blood pressure back to homeostasis by increasing width of the blood vessels.
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In which organizational level of life does natural selection occur?
A. Tissues
B. Ecosystems
C. Populations
D. Organisms
What is pollination ?
The process by which pollen grains are transferred from the anther of one flower to the stigma of the same or another flower is known as pollination.
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Patient was treated with autologous cd34+ hematopoietic stem and progenitor cells transduced ex Vivo with self inactivating lentiviral vector encoding human ada. I can't understand what it is saying at all.
The technique makes reference to a vector-based gene therapy in which the expression for a gene associated with Adenosine Deaminase Deficiency (ADA) is restored.
What is gene therapy?Gene therapy refers to the genetic engineering methodologies to correct the defective expression of certain genes.
Gene therapy is divided into methods that use viral vectors to incorporate the defective nucleic acid (in this case lentiviral vector) or non-based vectors (e.g. polysomes or polycations).
In conclusion, the technique is a vector-based gene therapy to restore Adenosine Deaminase Deficiency (ADA).
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If you were given a cube of modeling clay, how would you shape it to have the greatest surface area-to- volume ratio?
To have the greatest surface area to volume ratio, it would be best to flatten the clay and create numerous projections.
The quantity of surface area per unit volume of an object or collection of objects is known as the surface-area-to-volume ratio (also known as the surface-to-volume ratio or abbreviated as SA:V). A cell's volume increases proportionately more than its surface area as its size decreases. As a result, the surface area to volume ratio is higher for smaller objects. For cells, a high surface area to volume ratio is crucial. There is more plasma membrane compared to the interior of the cell when surface area exceeds volume. This makes it feasible for materials to be moved into, out of, and around the cell as effectively as possible.The fact that a surface area must be sufficient to hold the volume helps to explain why most cells are tiny in size.
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What grade is full-biology?????
Answer ASAP
PLEASE HELP!! i need help with this for biology i’m desperate please
As per the demonstration of Griffith and Avery, it can be concluded that the given experiment finding supports hypothesis III, i.e. genetic material or transforming substance is DNA.
What is Genetic material?Genetic material may be defined as any substance found in the cells of plants, animals, microbial or other origins that hold genetic information and that departs it from one generation to the next.
In 1944, Avery and others concluded that the transforming material was pure DNA, not protein or RNA.
These investigators found that DNA extracted from a virulent strain of the bacterium Pneumococcus genetically transformed an avirulent strain of the organism into a virulent form.
Therefore, as per the demonstration of Griffith and Avery, it can be concluded that the given experiment finding supports hypothesis III, i.e. genetic material or transforming substance is DNA.
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Differences between nucleus and vacuole
Answer:
Explanation: vacuole Stores water, waste, food, and other materials or helps sequester waste products
Which type of energy is found in food?
OA. Chemical
OB. Thermal
OC. Mechanical
OD. Kinetic
Answer:
Chemical energy
Explanation:
We get chemical energy from foods, which we use to run about, and move and talk (kinetic and sound energy). Chemical energies are stored in fuels which we burn to release thermal energy - this is one way of making electricity, see Electricity for more information.
Estimate a daily total exercise time goal for each crew member on the top of each crew member's health tracker page. If you do not know the best target value, you can put down 100 minutes for now. You'll learn more about this value in another lesson.
Some of the reasons for engaging in exercise are:
To keep fatTo burn fats and caloriesTo stay healthyTo prevent diseases, etcWhat is Exercise?This refers to the physical activity that is done to keep one fit and healthy in both the mind and body.
Hence, we can see that your question is incomplete as you did not give information about the crew members and their exercise goals, so I gave you a general overview.
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Which type of cells have cell membrane
Answer: animal cells
Explanation:
plant cells have a wall
how memory and forgetting affects students academic performances
Memory and forgetting make students' academic performances poor
Because they are overburdened by the demands of the classroom, kids with working memory issues frequently struggle academically. They forget important task information, don't follow directions, and don't finish exercises.
Learning depends on memory, but memory also depends on learning because the knowledge that is stored in one's memory serves as the foundation for associating new information. It is a symbiotic relationship that develops over the course of our lives.
The loss or alteration of knowledge that has already been encoded and stored in a person's long-term memory is known as forgetting or disremembering.
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