The first distinct differences between organisms are observed during gastrulation. The correct answer is A.
Gastrulation is a crucial stage in the early development of an embryo that occurs after fertilization and blastulation.
During gastrulation, the cells in the blastula undergo a series of coordinated movements and reorganizations to form the three primary germ layers: the endoderm, mesoderm, and ectoderm.
These layers give rise to all the different tissues and organs in the body.
The formation of the three primary germ layers marks a significant milestone in embryonic development, as it is the first time that distinct differences between organisms become evident.
The fate of each cell during gastrulation determines the tissues and organs that will develop later in the organism's life.
Therefore, differences in the timing, duration, and location of gastrulation events can lead to significant differences in the overall body plan and structure of organisms.
As such, gastrulation is a crucial process in the early stages of animal development. Therefore, the correct answer is A.
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The first distinct differences between organisms are observed during gastrulation.
Gastrulation is a key developmental stage that occurs during the early embryonic development of animals. It involves the formation of three distinct germ layers - the ectoderm, mesoderm, and endoderm - that will eventually give rise to the different tissues and organs of the body. The process of gastrulation marks the beginning of morphogenesis, which is the process of creating the body plan and establishing the distinct differences between different organisms.
During gastrulation, the cells of the embryo undergo extensive movements and rearrangements to form the three germ layers. The ectoderm will give rise to the skin, hair, and nervous system, while the mesoderm will give rise to the muscles, bones, and circulatory system, and the endoderm will give rise to the digestive and respiratory systems. The formation of these distinct germ layers is the first step in the development of the body plan and the establishment of the different characteristics of different organisms.
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Farmers have cultivated five different vegetable crops by artificially selecting for certain traits from the wild mustard plant. This table lists information about five different vegetables that originated from the wild mustard plant.
Broccoli- Suppression of flower development
Cabbage- Suppression of internode length
Kale- Enlargement of leaves
Cauliflower- Sterility of flowers
Kohlrabi- Enhancement of lateral meristems
Which statement is correct about the development of these vegetables through artificial selection?
A.
They resulted from a characteristic of the mustard plant that was changed or enhanced by the selective cultivation.
B.
They resulted from the exposure to extreme temperatures and ultraviolet sun rays.
C.
They were created over one generation when crossbreeding took place between two different varieties of vegetables.
D.
They stopped forming additional varieties at the end of a growth cycle.
Answer:
A
Explanation:
because the farmers selected certain traits to propagate
which statement best describes the difference between the sympathetic and parasympathetic nervous systems?
Parasympathetic system calms you down lets all your organs have the same amount of oxygen delivered. The sympathetic system gets your muscles moving and makes you excited.
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Having dimples is a dominant trait. Having no dimples is recessive.
A father has the genotype Dd and a mother has the genotype Dd.
What is the correct phenotypic possibilties for their offspring?
100% DD, 0% Dd, 0% dd
Answer:
option D
. I hope this helps
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Match the following peer pressure tactics to the definitions. (unspoken pressure, rejection, insults, and reasoning)
Communicating verbally and nonverbally
Attempting to convince peers to alter their beliefs
Excluding or ignoring
Dressing a certain way or participating in a certain activity
Answer:
excluding or ignoring= rejection
Dressing a certain way or participating in a certain activity= unspoken pressure
Attempting to convince peers to alter their beliefs= pressure
Communicating verbally and nonverbally= insults (?)
Which kind of worm is sometimes used to prevent blood clots?
planarian
leech
fluke
hookworm
Answer:
Leech
Explanation:
leeches suck our blood so when a blood clot appears they can fix it by sucking our blood so the blood does not effect.
Answer:
a leech i got it correct on edu!
Explanation:
The majority of cellular respiration takes place in the nucleus of cells
Answer:
fALSE
it is in the mitochondria
Explanation:
Answer:
answer :
Explanation:
Explanation:
Please help me i dont understand how this stuff works
Answer:
Balloon 2
Explanation:
Opposite charges (positive/negative) attract, like charges (positive/positive or negative/negative) repel.
Have a great day!
Answer:
the second one
Explanation:
opposites charges attract so a negative charge is attracted to a positive charge and the second balloon has the most positive charge
¿Qué receptores se estimulan al oler la rosa? Explica el proceso a través del cual se percibe el aroma de la rosa.
Answer:
receptores olfativos especializados localizados en el epitelio olfatorio de la mucosa nasal
Explanation:
Las neuronas receptoras del olor se denominan receptores olfatorios. Los receptores olfatorios son células especializadas capaces de percibir miles de sustancias químicas diferentes y decodificar la información en miles de olores distintos. Estos receptores se localizan en la mucosa nasal de las fosas nasales. En el caso del olor a rosa, como así también cualquier otro olor, las sustancias químicas responsables del olor se dirigen al epitelio olfatorio de la mucosa nasal, donde se unen a receptores específicos localizados sobre filamentos sensoriales (cilios) en las membranas celulares de las neuronas especializadas. La unión desencadena una respuesta en la células neuronales, es decir, una descarga eléctrica que se propaga desde las fosas nasales hasta el cerebro, el cual decodifica la información (el olor) en una región conocida como bulbo olfatorio.
define and understand the following terms:(1)Phylum (2)Class (3)Family (4)Order (5)Genus
Explanation:
phyllum: group group of related classes
classes: group of related order
family: a group of related genera (genus)
order: group of related families
genus: group of related species
Answer:
(i) Phylum
The phylum is second highest unit of classification after Kingdom. It includes one or more related classes of animals. In plants, instead of phylum, the term ‘division’ is used.
(ii) Class
The class is a taxonomic group consisting of one or more related orders. For example, the class, Mammalia, includes many orders like Primata (Man), Carnivora (tiger) etc.
(iii) Family
Family is a taxonomic group containing one or more related genera, eg., Family hominidae contains apes, monkeys and man. In plants, families are categorized on the basis of vegetative and reproductive features.
(iv) Order
Order is a taxonomic group containing one or more families. For example, the order, carnivora, includes many families.
(v) Genus
Genus is a taxonomic group including closely related species. For example, the genus, Solanum, includes many species such as nigrum, melongena, tuberosum, etc.
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Why is dissolving salt in water a physical change?
Answer:
Allowing the water to evaporate will return the salt to a solid state. ... It has not combined with the water to cause a chemical reaction.
where is the gene found?
what's the function of the gene?
what's the structure of the gene?
Answer:
gene found in the Dna its in the nucleus
Which term best describes the rate at which glacial erosion takes place? HELP PLEASE!!!!!!!
Group of answer choices
Quick
Slow
Ephemeral
Sudden
Answer:
Slow
Explanation:
The rate at which glacial erosion occurs is very very slow, it is difficult to observe a glacier erosion. As there are two main processes which occurs in glacial erosion. Plucking which is defined as the erosion stage and which transports large chunks of rocks.
When you buy strawberry why does "TASTE" matter? Please helppp
Taste matters because you have to enjoy the strawberry when you eat it. Unripen strawberries are very sour and are not appealing to taste. You would have a difficult time eating a sour or rotten strawberry. That is why taste matters.
All geologic eras are about the same number of years.
True or false
Answer:
false
Explanation:
Why do cells continue to divide in adult organisms?
Answer:
Although most of the tissues in adult organisms maintain a constant size, the cells that make up these tissues are constantly turning over. Therefore, in order for a particular tissue to stay the same size, its rates of cell death and cell division must remain in balance.
Explanation:
There are two main reasons why cells divide rather than continuing to grow larger and larger: The larger a cell becomes the more demands the cell places on its DNA. If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane. Why does cell division remain important to an adult organism even after it is fully developed? It remains important because cells are renewed and wounds are healed in the process. When cells stop dividing to specialize in structure and function. When cells undergo programmed cell death.
To become larger in size in a living thing is called
Answer:
Growing of organisms is the process of being larger in size
Answer:
Growth or u can say growing
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How do cells of all organisms undergo similar processes to maintain homeostasis?
Answer:bozo
Explanation:
Answer:
I feel as though you're asking, How do cells know how to maintain homeostasis?
In which case, your answer would be by reacting to internal and external stimuli.
In the biosphere, _________________ is an important element in ATP (Adenosine triphosphate) and DNA (Deoxyribonucleic acid).
A. Phosphorus
B. Phosphate
C. Photosynthesis
D. Photons
In the biosphere, phosphorus is an important element in ATP (Adenosine triphosphate) and DNA (Deoxyribonucleic Acid), which is in Option A, as phosphorus is a crucial element in the biosphere as it is a component of both ATP (Adenosine triphosphate) and DNA (Deoxyribonucleic Acid).
What is phosphorus?Phosphorus is essential for the formation of the backbone of the DNA molecule, where it links the sugar and nitrogenous base components of the nucleotides. The phosphate group of each nucleotide forms a covalent bond with the sugar molecule of the adjacent nucleotide, forming a long, stable chain of nucleotides that make up the DNA molecule. The DNA molecule is responsible for transmitting genetic information from parent to offspring and serves as a blueprint for the development and function of living organisms.
Hence, in the biosphere, phosphorus is an important element in ATP (adenosine triphosphate) and DNA (deoxyribonucleic acid), which are in Option A.
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how do you determine amino acid sequencing
Answer:
there are two main methods used to find the amino acid sequences of proteins. Mass spectrometry is the most common method in use today because of its ease of use. Edman degradation using a protein sequenator is the second method, which is most useful if the N-terminus of a protein needs to be characterized.
Explanation:
A scientist compares two samples of white powder. One powder was present at the beginning of an experiment. The other powder was present at the end. She wants to determine whether a chemical reaction has occurred. She finds that neither sample bubbles or dissolves in water. She measures the mass and volume of the solids. Sample one has a volume of 45 cm3 and a mass of 0.5 g. Sample two has a volume of 65 cm3 and a mass of 1.3 g. What should the scientist conclude?
A.
The samples have the same color, so no chemical reaction has occurred.
B.
The two samples do not react with water, so no chemical reaction has occurred.
C.
The densities of the samples are different, so a chemical reaction has occurred.
D.
The densities of the samples are the same, so no chemical reaction has occurred.
E.
The densities of the samples are different, so no chemical reaction has occurred.
Answer:
I think it is C because there densities are different.
Why would so many earthquakes originate along the slab of lithosphere that is descending into the mantle?
Answer:
As the slab descends into the mantle, rheology changes cause the plate to bend and deform, and generates these earthquakes. The trend of such events can be seen in cross-sections of subduction zones
Explanation:
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Due to altitude, you might find snow here during the summer months.
A) By a lake
B) In the forest
C) In the ocean
D) On a mountain
Answer:
D
Explanation:
Since the temperature is colder at a higher altitide you can use that knowledge to think about how high these places are relative to eachother. You can then take the highest one for your answer
What is the yellow structure, and what role does it play in a cell??
Answer:
Storage of fat
Explanation:
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What are the potential advantages and disadvantages of a major shift from the hard or traditional path of energy development to the soft or visionary path?
(These were the corresponding textbook pages, if needed) Please read the following from the textbook Environmental Science:
7th Edition - Chapter 17
9th Edition - Chapter 14
Answer:
Advantages of following the soft path, the argument here is alternative sources of power such as hydropower, geothermal energy , wind energy , and photovoltaic cells must be developed. This provides a alternative source to remain in a healthy environment and also function as the society we currently live in using the hard path. Disadvantages of following the hard path result with future generations fearing over the irreversible damage of climate change and the damage done to our atmosphere. The hard path argue that we should continue to operate in the future as we have in the past, except more efficiently. This is close to impossible and will only continue the negative effects the hard path( the path we have been following) results in. The major shift determines the outcome of this world, the futures worries or reliefs and ultimately the survival of humans.
Explanation:
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Which of these non-renewable resources is used nowadays in vehicles to reduce pollution?Immersive Reader (1 Point) Compressed Natural Gas All of these Diesel Petrol
Answer:
Compressed Natural Gas
Explanation:
Nowadays there are a lot of car manufacturers designing cars for specific countries that run on Compressed Natural Gas. This is because burning natural gas has been proven to be much cleaner and environmentally friendly than burning petroleum or Diesel. Natural Gas produces the same energy as the other non-renewable resources used to power cars while at the same time drastically reducing all of the pollutants created by burning these resources.
Almost all __________________ use the energy stored in _________ for their life cycle
Answer: living things and I’m not fully sure what the second one is sorry
Explanation:
When egg and sperm meet, offspring formed will have traits from…
A. 1 parent
B. Passed from 2 parents
C. Traits identical to other siblings
Answer:
I'm pretty sure it's B because kids can get looks from both parents
Answer:
B. passed from 2 parents
Which mealworm behaviors were reflexes
List 5 ways that phosphorous is essential to plants & animal life on Earth.
Answer:
El fósforo (P) es esencial en todas las formas de vida conocidas, dado que constituye un elemento clave en muchos procesos fisiológicos y bioquímicos. Se trata de un componente presente en todas las células de todos los organismos vivos. El fósforo aparece en estructuras complejas de ADN y ARN que, al contener y codificar la información genética, controlan todos los procesos biológicos en las plantas. Además, el fósforo es un componente fundamental del sistema de transporte de energía en todas las células.
El fósforo no aparece aislado en la naturaleza, sino que se encuentra siempre combinado con otros elementos con los que forma los fosfatos que pueden ser muy complejos y presentarse bajo distintas formas en los suelos, el agua, las plantas, los animales y el hombre. Por tanto, se utilizará la palabra “fósforo” de forma genérica en lugar de identificar el fosfato concreto, aunque en la mayoría de los casos, se ofrecerán valores numéricos como P2O5 .
Hasta una época relativamente reciente, el crecimiento de las plantas y de los animales, y por extensión, la productividad de la agricultura, se veían limitados por la falta de fósforo, ya que anualmente solo se disponía de unas pequeñas cantidades de las rocas y de los minerales del suelo gracias a la acción erosiva de los elementos. Cuando los agricultores comenzaron a utilizar fertilizantes en el siglo XIX, los niveles de fósforo disponible para las plantas en muchos suelos eran todavía muy bajos. Por eso, hasta que no se comenzó a aplicar fósforo, la respuesta a otros nutrientes, especialmente al nitrógeno, era muy pequeña, es decir, que el fósforo era el nutriente limitante del crecimiento de las cosechas.
El fósforo desempeña un papel fundamental en la fotosíntesis, proceso por el que las plantas absorben la energía del sol para sintetizar moléculas de carbohidratos, es decir, de azúcares, que son transportados a los órganos de almacenamiento de las plantas. Este proceso es esencial para todas las formas de vida y constituye el primer paso en la cadena para producir alimentos, piensos y fibras.
Las raíces de las plantas absorben el fósforo del agua presente en el suelo y que se denomina solución acuosa del suelo.
Sin embargo, los compuestos de fósforo no son muy solubles y, como consecuencia, la cantidad de fósforo que la planta puede tomar de la solución acuosa del suelo tiende a ser mucho menor de la que necesita, especialmente cuando la planta se encuentra en un periodo de fuerte crecimiento. Por eso, el fósforo de la solución acuosa del suelo debería reponerse con una frecuencia de diez veces al día en esos periodos.
En un día, una cosecha de rápido crecimiento puede absorber el equivalente a cerca de 2,5 kg de P2O5 por hectárea (una hectárea equivale a 10.000 m2 ). De esto se deduce, por tanto, que es necesario que existan reservas adecuadas de fósforo en el suelo y que esas reservas puedan estar disponibles con facilidad. La mayoría de los suelos no abonados contienen una cantidad demasiado pequeña de fósforo, fácilmente aprovechable, para dar respuesta a la gran demanda de las cosechas, en especial durante ciertos periodos del ciclo de crecimiento. De ahí, que se imponga la necesidad de aplicar fertilizantes que contengan fósforo.
La carencia de fósforo afecta no solo al crecimiento de la planta y al desarrollo y rendimiento de la cosecha, sino también a la calidad del fruto y a la formación de las semillas. Asimismo, la carencia de fósforo puede retrasar la maduración de las cosechas, con lo que se retrasa la recolección y se pone en riesgo la calidad del producto.
Explanation: