What is Major structures arising out of primary germ layers
Answers
Major structures arising out of primary germ layers are the various tissues and organs that make up the human body. The primary germ layers are the three layers of cells that form during the early stages of embryonic development. These layers give rise to the different tissues and organs of the body.
The ectoderm, or outer layer, gives rise to the skin, hair, nails, and nervous system. The mesoderm, or middle layer, gives rise to the muscles, bones, cartilage, blood vessels, and kidneys. The endoderm, or inner layer, gives rise to the lining of the digestive system, respiratory system, and other internal organs.
From these three germ layers, complex structures such as the brain, heart, lungs, liver, and pancreas develop. Each organ is made up of a combination of tissues derived from all three germ layers. This process of embryonic development is critical for the proper formation and function of the human body. Understanding the origin of these major structures is important for researchers and clinicians working in the field of developmental biology.
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Related Questions
a
4
Magnesium is an alkaline earth metal with an atomic number of 12 Its in the third row in the periodic table. Which expression shows one way to find the number of
valence electrons in one atom of magnesium?
A. 12x3
B. 12 divided by 3
C. (12-8)-2
D. (12-2)+8
E. (12+2)-8
Answers
A. 12×3
Explanation:
I think
Magnesium atomic number-12
third row - 3
valence electrons in one atom of magnesium-12×3=36
Give some example of microorganisms
ASAP
Answers
Answer:
some examples of microorganisms
Bacteria.
Archaea.
Fungi.
Protozoa.
Algae.
Viruses.
Multicellular Animal Parasites.
do all organisms have to have all five characteristics of life
Answers
Explanation:
All living organisms share several keys characteristics or functions: order, sensitivity or responce to the environment, reproduction, growth and development, regulation and energy processing. When viewed together, these characteristics server to define life.the apoplast in plant tissues consists of ________.
Answers
if a population's growth rate decreases as the population size approaches carrying capacity, the population's growth follows a(n) ________ model.
Answers
If a population's growth rate decreases as the population size approaches carrying capacity, the population's growth follows a logistic model.
The growth of a population may be modelled by using a simple formula that incorporates a few variables like carrying capacity and population growth rate. Logistic growth is the term used to describe the natural growth pattern of a population in which growth is restricted by some limiting factor, such as food or living space.
In this situation, the population's growth rate slows as the number of individuals in the population approaches the maximum sustainable level.
The logistic model describes the population growth when the growth rate decreases as the population size approaches its carrying capacity. This model incorporates the concept of a carrying capacity (K), which represents the maximum population size that an environment can sustainably support. In the logistic model, the population growth rate (dN/dt) is proportional to both the current population size (N) and the difference between the carrying capacity and the current population (K - N).
Mathematically, the logistic model is represented by the equation:
dN/dt = rN * ((K - N)/K)
Where:
dN/dt is the rate of change of population size over time,
r is the intrinsic growth rate of the population (without considering the carrying capacity),
N is the current population size,
K is the carrying capacity.
As the population size (N) approaches the carrying capacity (K), the term (K - N) becomes smaller, causing the growth rate (dN/dt) to decrease. Eventually, the population reaches a stable equilibrium at the carrying capacity, where the growth rate becomes zero.
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Describe the function of each organelle.
Nucleus
Answers
awnser:
The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.
Answer:
The nucleus is the central and most important part of an object, it controls and regulate the activity of cells. The nucleus also carries the genes.
Explanation:
Simplify the expression 53 + 3(5 − 3).
137
131
27
21
Question 4
Answers
\(\longrightarrow{\green{59}}\)
\(\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}\)
\(53 + 3(5 - 3) \\ \\ = 53 + 3(2) \\ \\ = 53 + 6 \\ \\ = 59\)
Note:-\(\sf\purple{PEMDAS\: rule.}\)
P = Parentheses
E = Exponents
M = Multiplication
D = Division
A = Addition
S = Subtraction
\(\bold{ \green{ \star{ \orange{Mystique35}}}}⋆\)
\(\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\)
Calculate within parenthesis
\(5-3\\\\=2\)
\(=53+3\cdot \:2\)
Multiply and divide
\(3\cdot \:2\\\\=6\)
\(=53+6\)
Add and subtract
\(53+6\\\\= 59\)
So, the simplified expression of \(53 + 3(5 - 3)\) is 59
i need help this is due to 4:00PM!!
Mai filled two balloons with the same amounts of water, sugar, and yeast. She put one on a table in the classroom. She put the other on a sunny windowsill. Which reasoning explains why Mai observed that the balloon in the window grew larger in size?
The windowsill area is cooler.
The windowsill area is warmer.
The classroom table area is warmer.
The classroom table area is the same temperature as the windowsill.
Answers
Answer:
the windowsill area is warmer
Explain
yeast reacts with heat
the windowsill area is warmer
describe the benefits to both aerobic eukaryotic cells and anaerobic prokaryotic cells that may have allowed for the formation of a mutually beneficial relationship between the two different cell types to occur.
Answers
Prokaryotes include a variety of bacteria, which can be divided in archaebacteria and the eubacteria. Archaea, have no nucleus and cell organelle, and were considered as extremophiles living in severe environments.
The eubacteria embrace the general forms of bacteria which is a huge cluster of organisms that exist in an extensive range of environments like water, soil, and other organisms (e.g., human pathogens). The largest and most complex prokaryotes are the cyanobacteria, in which photosynthesis evolved
Eukaryotic cells have membrane-bound organelles. The nucleus, enclosed by a nuclear membrane, contains genetic material which which is different from prokaryotic cells (Bacteria and Archaea). Eukaryotic cells have a variety of cytoplasmic organelles and cytoskeleton.
In eukaryotes, the genetic information (contained in nucleus) is structured in a linear rather than circular pattern of DNA molecules. Nucleus is the place of DNA replication and synthesis of RNA.
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Which 2 events during meiosis increase genetic variation by ensuring that each egg and each sperm will be unique? mark 2.
Answers
During fertilisation, a zygote is created by the union of one gamete from each parent. Recombination and independent assortment take place during meiosis, giving each gamete a distinct DNA set.
Explain about the genetic variation?Genetic variation is the variance in DNA sequences among members of a population. Germ cells, such as sperm and eggs, as well as somatic (all other) cells, are prone to variation.
Three separate processes—mutation, recombination, and gene immigration—are responsible for the genetic diversity. Evolution and genetic variety are propelled by mutation.
Gene variants, sometimes known as mutations, can cause genetic differences, or a normal process in which genetic information is rearranged as a cell prepares to divide can also cause genetic variations (known as genetic recombination). Different phenotypes can be introduced into an organism by genetic changes that change gene activity or protein function.
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I
rupe de estudiante utiliza un aparate para estudia
reaction quimica entre pedande cascara de bo
acetico, me muestra la siguiente ilustracion
ar la transferencia de energia durante la
de camara de hormierhonate de calcio vare
Experimento con vinagre y cáscara de huevo
Burbujas
Burbujas
Burbujas
de
Tubo
de
vidrio
Tubo
de
vidrio
vidno
Cáscara de
huevo
Vinagre
Cáscara de
huevo
Vinagre
3
Cáscara de
huevo
Vinagre
5%
Durante el experimento, utilizan la misma masa de cascara de huevo, pere varian la
concentración del vinagre.
A. Explica por yue la transferencia de energia no es la misma entre las tres pruebas del
experimente
B. Describe como se podria modificar el aparato para que pueda medir con MAYOR
EXACTITUD la transferencia de energia en cada reacción.
Recuerda contestar todas las partes de la pregunta en el espacio previsto
Answers
A. La transferencia de energía no es la misma entre las tres pruebas del experimento debido a la variación en la concentración de vinagre.
La concentración del vinagre influye en la velocidad y la eficacia de la reacción química. El vinagre es una solución diluida de ácido acético en agua, y el ácido actúa para disolver la capa externa de carbonato de calcio que compone la cáscara del huevo. Cuanto mayor sea la concentración de ácido acético en el vinagre, más rápida será la reacción y mayor será la transferencia de energía. Por lo tanto, se puede observar que la prueba que utilizó la concentración de vinagre al 10% tuvo una transferencia de energía mucho más alta que las otras dos pruebas.B.
El aparato se puede modificar para medir con mayor exactitud la transferencia de energía en cada reacción. Esto se puede hacer utilizando un calorímetro, que es un dispositivo que se utiliza para medir el calor de las reacciones químicas o los cambios físicos. El calorímetro consta de un recipiente aislado que contiene una muestra y se coloca en un baño de agua. Se mide la temperatura del agua antes y después de la reacción, y la diferencia en la temperatura se utiliza para calcular la cantidad de calor absorbido o liberado por la muestra.
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Cladograms are scientific hypotheses that can be overturned by new data. True False Angiosperm plants did not appear until after the extinction of the dinosaurs. True False The definition of an analogous character is "a character that has a similar function to a character in a different organism, but these similarities are due to different evolutionary origins". True False In evolution, non-genetic changes that occur during an organism's life span, such as increases in muscle mass due to exercise and diet, cannot be passed on to the next generation. True False The definition of a monophyletic group is "a group of organisms that has a single ancestor and contains only some of the descendants of this unique ancestor". True False An ichnofossil is any part of the hard skeleton left behind by a vertebrate in the fossil record. True False
Answers
An ichnofossil is any part of the hard skeleton left behind by a vertebrate in the fossil record. This statement is false. An ichnofossil is a trace fossil, which is any indirect evidence of past life, such as tracks, burrows, and feces. It is not part of the hard skeleton left behind by a vertebrate.
Cladograms are scientific hypotheses that can be overturned by new data. This statement is true. Cladograms are diagrams that show the evolutionary relationship between organisms based on various traits. New data can cause changes to be made to cladograms which can result in a change to the interpretation of the evolutionary history of organisms.
Angiosperm plants did not appear until after the extinction of the dinosaurs. This statement is false. Angiosperms, also known as flowering plants, appeared in the fossil record at least 140 million years ago. Although the dinosaurs went extinct around 66 million years ago, angiosperms were already widespread and diversifying by that time.
The definition of an analogous character is "a character that has a similar function to a character in a different organism, but these similarities are due to different evolutionary origins". This statement is true. Analogous characters are traits that have evolved independently in different groups of organisms due to similar environmental pressures and not due to a shared ancestor.
In evolution, non-genetic changes that occur during an organism's life span, such as increases in muscle mass due to exercise and diet, cannot be passed on to the next generation. This statement is true. Non-genetic changes that occur during an organism's life span are not heritable and cannot be passed on to the next generation. Only genetic changes that occur in the germ cells, such as mutations, can be passed on to the offspring.
The definition of a monophyletic group is "a group of organisms that has a single ancestor and contains only some of the descendants of this unique ancestor". This statement is false. A monophyletic group is a group of organisms that has a single ancestor and contains all of the descendants of this unique ancestor. This group is also called a clade.
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Eighty-five to ninety percent of all intervertebral disk herniations occur at what two locations?
Answers
85–90% of all intervertebral disc herniations happen at the disc between L4 and L5 or L5 and S1, making the lower back particularly susceptible.
An issue with one of the rubbery cushions (discs) that lie in the spaces between the vertebrae that make up your spine is referred to as a herniated disc.
A spinal disc has a tougher, rubbery exterior covering a soft, jelly-like interior (nucleus) (annulus). A herniated disc, also known as a slipped disc or a ruptured disc, happens when a portion of the nucleus pushes through a tear in the annulus. Although a herniated disc can develop anywhere along the spine, it most frequently does so in the lower back. A herniated disc may cause pain, numbness, or weakness in an arm or leg, depending on where it is located. Many people with herniated discs don't experience any symptoms.
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Which organism would most likely be labeled a tertiary consumer?
Answers
Answer:
OHHHHH oKkkkkkk i didnt think that said organism u cant say what i thought it said on brainley but remove the n and i
Explanation:
Fill in the blanks need explanationVolcanic eruptions has ______ and _____ effect on the environment
Answers
The volcanic eruptions has the release of volcanic gas and it provoke climate changes that has a negative effect on the environment.
help me with answer number 4
Answers
60 minutes remaining
Question 13 The most abundant photoreceptors that detect dim light are Cones.
A True
B False
Question 14 Muscular tissue that adjusts the shape of the pupil to regulate how much light enters the eye is IRIS.
A True
B False Question
15 Opsins are visual pigments derived from Vitamin D.
A True
B False
Answers
Answer:
Question 13:
B. False
The most abundant photoreceptors that detect dim light are Rods, not Cones. Rods are highly sensitive to low light conditions and are responsible for vision in dim light and peripheral vision. Cones, on the other hand, are responsible for color vision and high visual acuity but are less sensitive to low light conditions.
Question 14:
A. True
The iris is the muscular tissue in the eye that adjusts the size of the pupil, controlling the amount of light entering the eye. It contracts or expands to regulate the size of the pupil in response to changing light conditions.
Question 15:
B. False
Opsins are visual pigments found in photoreceptor cells, specifically in the retina of the eye. They are responsible for capturing light and initiating the process of vision. Opsins are not derived from Vitamin D. Vitamin D is a separate compound involved in various physiological processes in the body, including calcium absorption and bone health.
Explanation:
what rhetorical strategies does squealer use when addressing the issue of sleeping in beds
Answers
Squealer, the propaganda master in George Orwell's Animal Farm, uses various rhetorical strategies when addressing the issue of sleeping in beds.
Firstly, he appeals to the emotions of the animals by convincing them that the pigs need a good night's sleep in order to better serve the farm. He uses fear tactics by telling the animals that if the pigs don't get enough rest, they may fall ill and be unable to lead the farm. Squealer also employs the strategy of repetition, emphasizing that the pigs have always been the leaders and need certain privileges to do their job effectively.
Additionally, he uses a logical argument, stating that the pigs are the only ones who can properly manage the farm, so they deserve to have a comfortable place to sleep. Finally, Squealer employs a technique known as euphemism, referring to the beds as "hospital beds," which sounds more acceptable to the animals than the truth. Overall, Squealer's rhetoric convinces the animals to accept the pigs' privilege of sleeping in beds, highlighting the power of propaganda in shaping public opinion.
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Which two body systems are interacting in the diagram?
Answers
Answer:
Where is the diagram pls?
Describe 3 properties of Halogens on the periodic table
Answers
Answer:
Halogens are nonmetals. At room temperature, fluorine and chlorine are gases and bromine is a liquid. Iodine and astatine are solids. Halogens are very reactive, the reactivity decreases from fluorine to astatine.
Explanation:
How does the presence of ice on our planet influence global temperatures?.
Answers
The presence of ice on our planet influences global temperatures by reflecting sunlight, acting as an insulating layer, and contributing to ocean circulation. This helps maintain a balanced climate system and cooler temperatures in polar regions
The presence of ice on our planet influences global temperatures in several ways. Ice acts as a cooling agent, reflecting sunlight, and contributing to ocean circulation.
1. Albedo effect: Ice, especially in the form of snow and ice caps, has a high albedo, which means it reflects a significant portion of the sunlight that hits it. This reflection helps to regulate Earth's temperature by preventing the absorption of excessive solar energy, which would otherwise contribute to global warming.
2. Insulation: Ice, particularly sea ice, acts as an insulating layer between the ocean and the atmosphere. This reduces the transfer of heat between the ocean and the atmosphere, helping to maintain cooler temperatures in the polar regions.
3. Ocean circulation: The presence of ice in polar regions contributes to the formation of cold, dense water, which sinks and drives the global ocean circulation known as the thermohaline circulation. This circulation distributes heat around the planet and plays a significant role in regulating global temperatures.
In summary, the presence of ice on our planet influences global temperatures by reflecting sunlight, acting as an insulating layer, and contributing to ocean circulation. This helps maintain a balanced climate system and cooler temperatures in polar regions.
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The structure of a prokaryotic ribosome is not the same as a ribosome in an animal cell. As a result, which of the following is correct? (3 points)
Some antibiotics can block the synthesis of peptidoglycan in the walls of bacteria.
Translation can occur at the same time as transcription in eukaryotes but not in prokaryotes.
Some antibiotics can block protein synthesis in bacteria without harming the eukaryotic host.
Prokaryotes are unable to use a greater variety of molecules as food sources than can eukaryotes.
Answers
Answer:
Because the structure of a prokaryotic ribosome is not the same as that of a ribosome in an animal cell some antibiotics can block protein synthesis in bacteria without harming the eukaryotic host.
Explanation:
Antibiotics are medicines used to cure infectious diseases by killing bacteria or preventing their replication. One of the mechanisms of action of antibiotics is to act on ribosomes and inhibit protein synthesis.
The ribosomes of prokaryotic cells are 70S, with a ribosomal RNA (rRNA) content of 66-68%, while the ribosome of the animal cell has a sedimentation coefficient of 80S, with an rRNA percentage of 60%. This difference makes it possible for some antibiotics, such as aminoglycosides, to affect bacterial protein synthesis but not the animal cell's protein synthesis.
The other options are not related to the difference in ribosomes between prokaryotic cells and animal cells.
Answer:
Above is correct
Explanation:
Just took test
Some species of hares are brown most of the year, but change color to white in the winter. This allows them to
blend in through the seasons.
Where are these organisms adapted to live?
O deciduous forests
O desert
O tropical rain forests
O savanna
Answers
Describe the structure of the lungs (number of lobes, types of tissue that make them up, name of membrane surrounding them).
Answers
Answer: Each lung is composed of smaller units called lobes. Fissures separate these lobes from each other. The right lung consists of three lobes: the superior, middle, and inferior lobes. The left lung consists of two lobes: the superior and inferior lobes. A bronchopulmonary segment is a division of a lobe, and each lobe houses multiple bronchopulmonary segments. Each segment receives air from its own tertiary bronchus and is supplied with blood by its own artery. Some diseases of the lungs typically affect one or more bronchopulmonary segments, and in some cases, the diseased segments can be surgically removed with little influence on neighboring segments. A pulmonary lobule is a subdivision formed as the bronchi branch into bronchioles. Each lobule receives its own large bronchiole that has multiple branches. An interlobular septum is a wall, composed of connective tissue, which separates lobules from one another.
Explanation:
Myosin is a motor protein that associates with:A. intermediate filaments.B. vimentin.C. microtubules.D. microfilaments.
Answers
Option A is correct. Myosin is a motor protein that associates with intermediate filaments.
One of the three varieties of cytoskeletal filaments found in cells are microfilaments, also referred to as actin filaments. They are made of globular actin monomers, which have the ability to polymerize into lengthy, fine filaments.
Large and intricate myosin is an essential component of muscle contraction and movement. It has two heavy chains, several light chains, and a "head" region that binds to actin filaments and moves along them using the energy from ATP hydrolysis.
The sliding filament theory of muscle contraction heavily relies on the interaction of myosin and actin filaments. Myosin participates in a variety of cellular activities, including cytokinesis, cell migration, and vesicle transfer, in addition to muscle contraction.
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Explain the following term - cellular respiration
Answers
Answer:
Answer Below V
Explanation:
Cellular respiration is a series of metabolic activities and processes that occur within organisms' cells to transform chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP) and then release waste products.
Why is it theorized that the asteroids die
not merge to form a planet?
Answers
Answer:
there's not enough total mass in the belt to form a planet. The belt contains only about 4 percent of the Moon's mass in asteroids
Explanation:
Science.com
Large geographic region characterized by a distinct climate and mix of species
Answers
Answer: A biome!
What does it mean when a
cell has an infection?
A. An invader is kept out of the cell by
the cell membrane.
B. An invader has been denied entry
into the cell by the cell membrane.
C. An invader has found its way into
the cell.
Answers
Answer:
C
Explanation:
If the invader was outside the cell, it wouldn't be infected.
organophosphate toxicity produces which sign or symptom? a. constipation b. salivation c. mydriasis d. hot, dry skin
Answers
Organophosphate toxicity produces salivation sign or symptom. Option (b)
Organophosphate toxicity refers to the harmful effects of exposure to organophosphate compounds, which are commonly found in certain insecticides and nerve agents. These compounds inhibit the activity of the enzyme acetylcholinesterase, which leads to an accumulation of acetylcholine, a neurotransmitter, in the body.
One of the hallmark signs or symptoms of organophosphate toxicity is excessive salivation or increased production of saliva. This occurs due to the overstimulation of acetylcholine receptors in the salivary glands, leading to increased secretions.
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