If gastrulation was blocked by an environmental toxin, then embryonic germ layers would not form.
When an embryo transitions from a one-dimensional layer of epithelial cells (blastula) to a multilayered, multidimensional structure known as the gastrula, it goes through a youthful developmental process called gastrulation.
The three layers of embryonic tissue, or germ layers, are created as a result of gastrulation. These cells will multiply, move, and differentiate during development into the four main adult tissues: epithelial tissue, connective tissue, muscle tissue, and nerve tissue.
The stages of gastrulation in amniotes are as follows: (1) the embryo develops asymmetries; (2) the primitive streak forms; and (3) cells from the epiblast intrude at the primitive streak and undergo an epithelial to mesenchymal transition to generate the germ layers.
Complete question:
If gastrulation was blocked by an environmental toxin, then
A) cleavage would not occur in the zygote.
B) embryonic germ layers would not form.
C) fertilization would be blocked.
D) the blastula would not be formed.
E) the blastopore would form above the gray crescent in the animal pole.
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1.Evolution is as much a fact as the fact that planets go around the Sun
2.Evolution is primarily concerned with the origin of humans
3.According to evolution, people came from monkeys a long time ago
4.Evolution is something that happened only in the past, it is not happening now
5.Evolution is something that happens to individual organisms
6.Evolution was developed as an idea to destroy or undermine religion
7.In order to accept evolution as a real process, you cannot believe in God
8.Evolution is only a theory
9.Biological, medical, and agricultural research increasingly assume that evolution occurs
10.Evolution involves individuals changing in order to adapt to their environment
each are either true or false
Answer:
1. true
2. false
3. true
4. false
5. false it happens to a species
6. false
7. false? not shure on this one
8. false
9. true
10. true
Answer:
I'd love to hear you explain this to a Muslim or Islam. Why pick on Christians and not Hindus or Buddhists? You are saying they are wrong by claiming evolution is real. Also, maybe give some evidence next time you blindly state information.
A researcher in 2024 studies the evolutionary relationships between influenza viruses by comparing the genomic sequences of the viruses found in pigs, ducks, and humans in a given year. When evaluating the viruses that had infected these hosts the previous year, she identifies a cross-species transfer from pigs to ducks in the year 2022. What information supports the hypothesis that cross-species transfer leads to more severe disease in the new host
Answer:
pigs suffered severe influenza in the year 2022
Explanation:
Influenza, commonly known as flu, is a viral infectious disease caused by different types of influenza viruses. Some of the most common symptoms of this disease include, among others, headache, coughing, fever, muscle pain, etc. Influenza viruses can affect humans and different animals such as, for example, cats, dogs, birds and horses. There is evidence showing cross-species influenza virus transmission. For example, it has been shown that the influenza type A virus can be transmitted from one species to another (for example, between humans and pigs). In these cases, cross-species transmission information may indicate how much potential a virus has to cause a pandemic in the new host by analyzing the severity and infectivity of the virus in the original host.
HELP ASAP!!!
Proteins are a type of biomolecule with a wide variety of functions. Which statement is correct about the digestive system and proteins?
Question 1 options:
Enzymes in your saliva start breaking down the carbohydrates in food
Ready to use energy is released as the protein is broken down
The large intestine absorbs proteins for use in cells.
The liver manufactures bile salts that help break down fats in proteins
Answer:
Enzymes in your saliva start breaking down the carbohydrates in food
Explanation:
It makes sense, your digestive system consists of your mouth, esophagus, stomach, pancreas, liver, gallbladder, small intestine, large intestine, and anus. As soon as you put food in your mouth you break down your food. Also I took the test, hope you make an good grade!!!
The statement 'enzymes in your saliva start breaking down the carbohydrates in food' is correct about the digestive system and proteins.
The digestive system is an organ system where organs work together to digest foods.Enzymes are specific proteins that carry out specific chemical reactions.Digestive enzymes such as amylase are secreted by the salivary glands in order to help with the digestion of foods.
In conclusion, the statement 'enzymes in your saliva start breaking down the carbohydrates in food' is correct about the digestive system and proteins.
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ITS A DOG I THINK!
matter and energy move through ecosystems between different organisms. how does matter travel through an ecosystem and through earths spheres?
Answer: In ecosystems, matter and energy are transferred from one form to another. Matter refers to all of the living and nonliving things in that environment. Nutrients and living matter are passed from producers to consumers, then broken down by decomposers. Decomposers break down dead plant and animal matter.
Explanation:
A man has an oak tree with dropping, discolored leaves, and poor growth. Which of the following professionals would be most
be able to tell him what is wrong with the tree?
O an arborist
O a landscape designer
O a pomologist
an agronomist
Helpp
Answer:
an arborist
Explanation:
An arborist is an expert on trees meaning they would be the one who would know best
it is where exchange of nutrient,oxygenated and unoxygenated,blood takes place
Answer: The cardiovascular system (the heart)
Explanation: It pumps the blood the right side pumps deoxygenated blood, meanwhile the left pumps oxygenated blood
Hope this helps :)
All of the following are in example kinetic energy except?
Light energy
Thermal energy
Mechanical energy
Chemical energy
Answer:
light energy
Explanation:
Answer:
Light energy
Explanation:
1. It consists of all the population of organisms living in a particular
ecosystem
a. Biosphere b. population C. ecosystem
d. community
Answer:
The answer is a.population
PLEASE HELP ME I WILL GIVE BRAINLIEST! ASAP HELP! HELP!
Read the two statements given below.
Statement 1: All living things generate from air, water, and fire
Statement 2: The children accidently triggered the smoke alarm
1. Which of the following best relates the statement to the correct type of theory?
2. Both statements are about scientific theories.
3. Both statements are about everyday life theories.
4. Statement 1 is about an everyday life theory, and statement 2 is about a scientific
theory.
5. Statement 1 is about a scientific theory, and statement 2 is about an everyday life
theory.
(this is a middle school science question, there is no way to put it as science)
Answer:
5. Statement 1 is about a scientific theory, and statement 2 is about an everyday life theory.
Explanation:
Answer:
The last one
Explanation:
Statement 1 is about a scientific theory, and statement 2 is about an everyday life theory.
Which sequence of events best describes the current theory of the origin of life on Earth?
Answer:
Development of simple bacteria --> RNA formation --> DNA formation
Explanation:
The sequence of events best describes the current theory of the origin of life on Earth development of simple bacteria --> RNA formation --> DNA formation.
What is RNA?According to the hypothesis and researchers, it seems to confirm that RNA was the first genetic or hereditary material that was present in the simple form of bacteria developed first.
RNA is the molecule responsible for the origin of life on the earth and evolved all the required processes and methods for carrying and expressing the genetic information of an organism before DNA. DNA is evolved from RNA molecules of simple bacteria.
Nucleic acid is one of the biological molecules in living organisms. The two types of nucleic acids are DNA and RNA. DNA (deoxyribonucleic acid) is a double stranded biological molecule that stores genetic information in living cells. They are made up of monomers called nucleotides.
Therefore, The sequence of events best describes the current theory of the origin of life on Earth development of simple bacteria --> RNA formation --> DNA formation.
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This region is known for hot and dry summers and long, cold winters.
Answer:
Desert?
Explanation:
Answer:
what is the question? there is none
Explanation:
choose the correct statement with respect to unicellular organisms:
what are the options so I can help :)
like animals plants need continuously reproduce themselves?
Explanation:
Plant reproduction is important to people and animals also because if plants were not continuing to make more of themselves then there would not any plants for people and animals to eat. ... Plants and animals and plants and pollinators are interdependent because they all need each other to survive.
Answer:
like animals plants reproduce by there parent plant from seeds there is three ways plants reproduce from wind, water and animal
animals: animal like monkey eat the fruit of the plant and throw the seed away later it will start growing
wind: when a strong winds occur it will carry plants like dandelions, swan plants away from its parents and when the wind is over it will start growing
water: plants like coconut will fall on the sea and plot away from its parent and after it landed on land it will start growing
Explanation:
hope it helps can you mark me as the brainliest have a nice day :)
A population of beetles changing from yellow to green and surviving better is an example of
A. genes
B. mutations
C. natural selection
D. selective breeding
Answer:
C. natural selection
Explanation:
Natural selection is when the organisms that have the better adaptation so they survive. In this case, the green was the better adaptation so they lived.
Please what's an ecosystem
ECOSYSTEM:
Ecosystem is the complex of living organisms, their physical environment, and all their interrelationships in a particular unit of space.
help me woth these two ill give free BRAINLESS
answer : the elbow is an example of the second last one (it won't let me write the word)
Answer:
Answer D
Explanation:
This is a synovial joint, or just D
describe the function of the following features in bringing about Movement in a snail muscles
Ce clasă ești sa văd daca te pot ajuta
Answer:
A snail moves using muscles that are generally referred to as ''false feet'. Moreover, it leaves a trail of a slime like substance that is secreted by the feet which reduces the friction between the false feet and the Earth. it contains mucus.
What are three examples of protists?
A.amoeba
B.paramecium
C.euglena
D.fungi
Answer:A,B,C
Explanation:
18) What kind of mutation causes extensive damage in the DNA?
a. Point mutation c. Frame shift mutation b. Chromosomal mutation d.Nonsense mutation
Answer:
c. Frame shift mutation.
Explanation:
Frame shift mutation is a type of mutation which causes more damage to the DNA of the cell. It causes changes in the amino acid sequences in a polypeptide chain. Point mutation is a type of mutation in which only one amino acid changed, while on the other hand, frameshift mutation changes the whole sequence of amino acids so we can say that frame shift mutation is more damaging to the DNA molecule.
What happened to North American coastal waters when the great white shark population decreased
If North American coastal waters when the great white shark population decreased then planktivore fish number increases.
What happens to marine systems when shark numbers decline?In the Ecosystem, the spatial controls and abundance, sharks indirectly maintain the seagrass and corals reef habitats. The loss of sharks has led to the decline in coral reefs, seagrass beds and the loss of commercial fisheries.
Thus, the number of planktivore fish increases.
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Which of the following statements is NOT true about cellular respiration?
Your options:
Cellular respiration breaks down sugars and other molecules to use the stored energy.
Cellular respiration occurs in the chloroplast in plant cells.
Cellular respiration occurs in the mitochondria of cells.
Both plants and animals perform cellular respiration.
Answer:
cellular respiration breaks down sugars and other molecules to use the stored energy
write a paragraph of at least five sentences expressing your appreciation of the benefits you can gain from dancing
Answer:
people of all ages, shapes, and sizes. It has a wide range of physical and mental benefits including:
improved condition of your heart and lungs
increased muscular strength, endurance, and motor fitness
increased aerobic fitness
improved muscle tone and strength
weight management
stronger bones and reduced risk of osteoporosis
better coordination, agility, and flexibility
improved balance and spatial awareness
increased physical confidence
improved mental functioning
improved general and psychological wellbeing
greater self-confidence and self-esteem
better social skills.
Does the egg or the sperm determine the biological male or female human ?
Answer:
the male that determines the sex of the offspring when fertilization occurs.
Explanation:
How can flooding can be cause
Answer:
Severe flooding is caused by atmospheric conditions that lead to heavy rain or the rapid melting of snow and ice.
Explanation:
what is a force and type of force
Explanation:
the pull or push with changes or tries to change the position of a body is called force.
there are different types of force among them the main types of force are given below pulling force pushing force gravitational force magnetic force frictional force and muscular force
hope it helps
Answer:
a force is a pull or push that can change the shape of something, the direction of something, the speed of something, and more.
The Main types of force are listed below;
frictiongravityWhat is a cell in science
Answer:
Cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast
hope it's help
#carryONlearningAnswer:
A cell is defined as the smallest, basic unit of life that is responsible for all of life's processes.
Explanation:
PLEASE HELP ME WITH THIS
Answer:
more exposure to sunlight and therefore increase photosynthetic production
Explanation:
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b) Explain why a leaf cannot be tested for starch by adding iodine solution directly.
Answer:
Due to presence of waxy layer.
Explanation:
A leaf cannot be tested for starch by adding iodine solution directly because waxy cuticle covering the leaves that prevents the penetration of iodine in the leave cells. First, the waxy layer should be removed by boiling the leaves that causes disruption in the cell membranes that make easier for the iodine to penetrate in the leave cells so that's why iodine can not be tested for starch directly.
Compare and contrast the digestive system of amoeba and planaria
Answer:
Amoeba is unicellular and is very primitive compared to planaria.
Planaria is advance and evolurionary, stands at a higher level being included in flatworms.