the _______ stage formally starts when the differentiation of the major organs has occurred.
Answers
The Fetal stage formally starts when the differentiation of the major organs has occurred. The fetal stage is the third stage of prenatal development, occurring after the embryonic stage. It starts in the 9th week of gestation, or 11th week of pregnancy, and lasts until birth. In the fetal stage, the major organs have already differentiated, and the fetus grows significantly in size and weight.
This stage is marked by continued development of tissues and organs and the beginning of physical movements. During this stage, the fetus grows at a rapid pace. The fetus starts to develop its fingerprints, and the organs, including the lungs, liver, and kidneys, start to function. The brain also develops rapidly, and the fetus can sense light, sound, and touch. The fetal stage is also a time of increased physical movements, including kicking, turning, and stretching.
The fetal stage is crucial because it is the final stage of development before birth. By the end of this stage, the fetus has all the major organs necessary to survive outside the womb. Hence, it is essential for the pregnant woman to take good care of herself during this stage and get regular prenatal care to ensure the health and safety of the fetus.
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Related Questions
Mark which of the following statement is false about exonic mutations
O a.
A frameshift mutation is likely to shift the original stop codon site
O b. Introduction of a premature stop codon leads to a shorter mRNA product
O c. A missense mutation can be a gain-of-function mutation
O d. Point mutations result in an altered sequence in the mRNA product
Answers
The false statement about exonic mutations is A frameshift mutation is likely to shift the original stop codon site so the correct answer is option (a).
Frameshift mutations are a result of the addition or deletion of nucleotides, which changes the reading frame of codons during translation. They usually result in the production of nonfunctional proteins that lack specific amino acids and are often truncated. Frameshift mutations may lead to the production of a premature stop codon that leads to a shorter mRNA product or the extension of a protein by introducing new amino acids after the frameshift. However, they are not likely to shift the original stop codon site. Instead, the resulting protein product may contain several stop codons at unexpected sites in the sequence, leading to an incomplete and nonfunctional protein.
Exonic mutations are DNA changes that occur within the coding regions of genes. They include point mutations, missense mutations, and nonsense mutations. Point mutations result in a single base pair change, while missense mutations result in the substitution of one amino acid for another. Nonsense mutations, on the other hand, introduce a premature stop codon that truncates the protein prematurely.A missense mutation can be a gain-of-function mutation, which means that the resulting protein gains new or enhanced activity. This is usually the case when the amino acid substitution leads to an increase in protein stability, affinity, or activity.
Conversely, a missense mutation can also result in a loss-of-function mutation, where the protein loses its normal activity due to amino acid substitutions. Thus, a missense mutation can either be beneficial or detrimental to the organism, depending on the specific mutation and the protein involved.
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DNA replication is considered to be ______ because the end product consists of one old strand and one newly synthesized strand.consistantsemiconservativedispersiveconservative
Answers
DNA replication is considered to be semiconservative because the end product consists of one old strand and one newly synthesized strand.
On this map of the world drag the label for each tectonic plate to its correct position on the figure
Answers
Answer:
arent you going to give us a picture
Explanation:
we kinda need it
Of the following, which is a nonrenewable natural resource?
a.
phosphorus
c.
cotton
b.
wood
d.
water
Answers
Which structures of a euglena work together to keep it alive?
O A. Organ systems
O B. Tissues
O C. Specialized cells
O D. Organelles
Answers
Answer
D. Organelles
Hope it helps
we can touch our finger to our nose while our eyes are closed in part because we can sense the position and movement of our joints as well as the length of stretch in our muscles. these sensations create awareness of our body's positioning. which of the following receptors is most likely responsible for this ability? we can touch our finger to our nose while our eyes are closed in part because we can sense the position and movement of our joints as well as the length of stretch in our muscles. these sensations create awareness of our body's positioning. which of the following receptors is most likely responsible for this ability? exteroceptors interoceptors proprioceptors nociceptors
Answers
As said, these feelings help us become aware of where our bodies are in space Proprioceptors.
What your body's muscles do?How Do Muscles Work and What Are They?
They also assist the body in chewing and making it easier for food to go through the digestive system. Even while we are absolutely still, our muscles are continually working in every region of the body.
What materials makes up muscle?Myofibrils, the protein building blocks that make up a single muscle fiber, include the myoglobin protein and other components that provide muscles the oxygenated blood they need to contract. When a stimulus to contract is applied, the filaments in each myofibril fold together.
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What is a sugar that cannot be extracted from plants.
Answers
Answer:
LactoseExplanation:
Lactose is the only sugar that cannot be extracted from plants. It can only be found in milk, including human breast milk, and in some dairy products.
imagine a pedigree that traces an inherited disorder found in individuals with two recessive alleles for gene d. the pedigree shows three siblings with the genotypes dd, dd, and dd. did the parents of these three children have the disorder
Answers
Answer: No, the parents don't have a disorder, but they carry recessive allele…
Explanation:
In this cross, there is no possibility to have children with genotype DD this concludes parents must be heterozygous which do not have the disorder those three genotypes it’s inherited DD, Dd, or dd
First to answer 15points plus brainliest!!!!
Nuclear Energy is produced by
Answers
Answer:
Fission or the act of splitting uranium atoms
Answer:
Nucler fission
Explanation:
Clearly C and D arent correct.
In nuclear fission(A), a uranium atom(mildly radioactive) is split by a nutreon, which realeases nucler energy.
In nucler fussion(B), which only occurs in the sun and stars, two nulcei are combined to make a even bigger nuclei, this does not produce nuclear energy.
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In plant cells, what
structures contain
DNA?
A. nucleus,
and central vacuole
mitochondria,
B. nucleus, mitochondria,
and chloroplasts
C. nucleus, mitochondria,
and rough ER
D. nucleus, mitochondria,
and smooth ER
Answers
Answer:
The answer towards your question would be B.
B. nucleus, mitochondria and chloroplasts.
Explanation:
To explain it, the reason is because Nucleus is the one which contains DNA and only mitochondria and chloroplasts are the other ones which also contain DNA as their genetic material. Although, all living organisms do use deoxyribonucleic acid (DNA) including plants. The DNA in plant cells is found only in the nucleus, the mitochondria and the chloroplasts.Which of the following statements is true about enzyme-catalyzed reactions? Select one: a. They alter the (Delta G) of a reaction. b. Enzyme-catalyzed reactions are all exergonic. c. The reaction proceeds quickly because it has increased activation energy d. The reaction proceeds faster than the same reaction in the absence of the enzyme. e. Their performance is unaffected by environmental conditions (e.g. pH, temperature).
Answers
Statement is true about enzyme-catalyzed reactions is d. The reaction proceeds faster than the same reaction in the absence of the enzyme.
Enzyme-catalyzed reactions are chemical reactions that are accelerated by enzymes, which are biological catalysts. These enzymes lower the activation energy required for the reaction to occur, allowing it to proceed at a faster rate than it would without the enzyme.
This increased rate does not alter the Delta G (change in free energy) of the reaction (option a) and does not mean the reactions are all exergonic (option b).
he reaction does not proceed quickly because of increased activation energy, but rather because the enzyme lowers the activation energy (option c).
Lastly, enzyme performance is affected by environmental conditions such as pH and temperature (option e), which can impact their function and efficiency.
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Write a Claim about how shared resources can be depleted and how to sustainably manage them
Answers
Shared resources can be depleted when used excessively and selfishly for one's interest only. For their sustainable management, the understanding should be inculcated that they are in limited quantities and hence should be used only when necessary and in required quantities.
Shared resources are those that are used by various individuals and populations at the same time. Due to their necessity they are in limited quantities and hence their efficient use is very essential. The examples of shared resources are fresh water bodies, grazing lands, forests, etc.
Sustainable management is the balanced use of resources so that they do not get depleted and are available for the use of the individuals.
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Can someone plz help me find the answer
Answers
Answer:
The answer is c because right between 25 and 75 years is when it starts to rapidly decrese.
Explanation:
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dont get to stressed with your homewwork i do online school to and it can get frustrating
If a cubical cell with 2-cm sides doubles the dimensions of its sides, what relative change occurs to the ratio of its surface area to volume ratio?
Answers
Answer:
When the length of the side of the cube is doubled, the area increases by a factor of four while the volume increases by a factor of eight.
Explanation:
Surface area of a cube is given by the formula below:
Surface area of a cube = 6a²
Volume of a cube is also given by the formula below:
Volume of a cube = a³
Where a is the length of a side of the cube.
For the first cube, a = 2 cm
Surface area of the first cube = 6 * (2 cm)² = 24 cm²
Volume of the first cube = (2 cm)³ = 8 cm³
When the side length of the cube doubles, a = 4 cm
Surface area of the second cube = 6 * (4 cm)² = 96 cm²
Volume of the first cube = (4 cm)³ = 64 cm³
The ratio of the area and volume of the new cube is given below:
Area = 96 cm² / 24 cm² = 4
Volume = 64 cm³ / 8 cm³ = 8
Therefore, when the length of the side of the cube is doubled, the area increases by a factor of four while the volume increases by a factor of eight.
What is the phenotype of a person whith the genotype I^Ai?
Answers
Answer:
Type A
Explanation:
Mode of inheritance for blood is tricky, but type A and B are codominant, while type A and type B are dominant over O. So in this situtation
I^Ai is A because type a is dominant over o
What is one thing people can do to reduce the amount of carbon in theatmosphere?A. Plant more trees.OB. Drive longer distances.OC. Use more electricity.OD. Burn more fossil fuels.
Answers
Reduction of carbon in the atmosphere
Plants consume carbon dioxide (CO2) in the process of photosynthesis as a substrate to form their food, i.e, sugars such as glucose, following the formula:
6 CO2 + 6 H2O + light --
What is the definition of Systentatic search ?
Answers
Systematic search refers to a methodical and organized approach to conducting research or gathering information in order to locate relevant and reliable sources.
It involves employing specific strategies and techniques to systematically explore various sources, such as databases, libraries, online resources, and academic journals, to gather information on a particular topic or research question.
In a systematic search, researchers follow predefined search criteria and methodologies to ensure that their search is comprehensive and unbiased.
This typically involves formulating specific research questions, identifying appropriate keywords and search terms, setting inclusion and exclusion criteria, and using advanced search techniques like Boolean operators and filters.
By employing a systematic approach, researchers aim to minimize the risk of missing relevant information and maximize the quality and reliability of the sources they retrieve.
Overall, a systematic search is a rigorous and structured process that helps researchers locate the most relevant and reliable information available, thereby supporting evidence-based decision-making and ensuring the integrity and validity of research findings
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Viral particles contain both nucleic acid and protein are can replicate inside of a host cell. Technically, this constitutes a "self-replicating molecular assemblage" which is also one way to define life. Therefore, one can conclude that
options:
A.viruses are not living because the they don’t breathe oxygen.
B.viruses are not living because they cannot think.
C.viruses are living.
D.Viruses are not living because this formation is a simple repetitive process without the ability to respond to the environment.
Answers
The viruses can be considered as living things.Viruses are self-replicating molecular assemblages that possess a number of characteristics of living organisms.
They are made of genetic material, either DNA or RNA, covered in a protein covering.
This genetic material contains instructions for the virus to replicate itself and infect host cells. Not only do viruses have the ability to capture resources from their environment, use them to replicate, and respond to changes in their environment, they are also able to evolve and adapt over time.
Furthermore, viruses are able to interact with other organisms and cause disease, both traits of living organisms. It is thus valid to say that viruses are living organisms.
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What are acidosis and alkalosis? What can cause each condition and what impact does that have on your body? How can each condition be treated?
Answers
Answer:Acidosis and alkalosis are medical conditions related to the pH balance of the body. The pH value of the body needs to be within a specific range in order for the body to function properly. Acidosis occurs when the pH of the blood drops below 7.35 due to an excess of acid in the blood. On the other hand, alkalosis occurs when the pH of the blood rises above 7.45 due to an excess of base in the blood.
Acidosis can be caused by several factors, including diabetes, kidney disease, lung disease, alcoholism, and certain medications. Symptoms of acidosis can include fatigue, confusion, shortness of breath, and a feeling of being generally unwell. Severe acidosis can lead to shock or coma and is a medical emergency. Treatment for acidosis involves identifying and treating the underlying cause. For example, if acidosis is caused by diabetes, controlling blood sugar levels can help treat the condition.
Alkalosis can be caused by several factors, including vomiting, prolonged vomiting or suctioning of the stomach, overuse of certain medications such as antacids, and conditions like lung disease, liver failure, and congestive heart failure. Symptoms of alkalosis can include confusion, muscle twitches, and a tingling sensation in the fingers and toes. Treatment for alkalosis typically involves identifying and treating the underlying cause. For instance, if alkalosis is caused by vomiting, treating the underlying cause of the vomiting can help resolve the condition.
In some cases, medical intervention may be necessary to correct acidosis or alkalosis. For instance, in severe cases of acidosis, bicarbonate may be administered intravenously to help restore pH balance. In cases of severe alkalosis, treatment may involve discontinuing medications that contribute to the condition and administering intravenous saline or potassium chloride.
Explanation:
How does Stem cell therapy work?
Please in detail
Answers
*WILL MARK BRAINIST*
Which body system is not directly connected to itself?
O respiratory
O circulatory
O endocrine
Answers
Answer:
0 endocrineExplanation:
This should be endocrine system since it is made up of ductless glands .Biological molecules used by living systems to catalyze specific reactions
Group of answer choices
Enzymes
Carbohydrates
Proteins
Amino Acids
Answers
Answer:
Enzymes
Explanation:
Enzymes are biological molecules that catalyze specific reactions.
Enzymes are organic proteins, and are catalysts for chemical reactions, meaning that they help to speed up the reaction.
They do this by lowering the amount of activation energy needed.
in the splicing step of gene expression, ______ are spliced out, and ________ are stitched together.
Answers
In the splicing step of gene expression, introns are spliced out, and exons are stitched together.
What is gene expression?Gene expression refers to the process of protein synthesis that begins with a gene in DNA and finishes with a functional protein. The genetic code is translated to make protein during gene expression. Gene expression is a complex process that requires many different molecules, including RNA polymerases, transcription factors, and other regulatory proteins.
In eukaryotic cells, pre-mRNA is modified before it exits the nucleus. RNA splicing is a crucial aspect of pre-mRNA processing, in which non-coding introns are excised and exons are joined to produce mature mRNA molecules. The splicing process is carried out by a complex machinery consisting of small nuclear ribonucleoprotein particles (snRNPs).
The snRNPs in spliceosomes recognize introns and bring together the flanking exons for precise excision. Intron removal is followed by the ligation of exons, which results in the formation of a mature mRNA molecule that can be exported from the nucleus to the cytoplasm, where it can be translated into a functional protein.
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hydrothermal vents are openings in the sea floor that release hot, mineral-rich water. these vents are found in areas with high volcanic activity, and are so deep in the ocean that no sunlight can reach them. hydrothermal vents help create a thriving ecosystem by releasing certain inorganic compounds into the surrounding area. bacteria harness energy from these compounds, producing sugar molecules that they can use as food. the bacteria provide a food source for giant tube worms, mussels, and shrimp, which in turn are eaten by eel-like fish. which of the following describes the bacteria in a deep sea hydrothermal vent ecosystem?
Answers
The bacteria in a deep sea hydrothermal vent ecosystem are: chemosynthetic bacteria.
These bacteria utilize energy from the inorganic compounds released by the hydrothermal vents to produce sugar molecules through a process called chemosynthesis. These sugar molecules are then used as a food source by other organisms in the ecosystem, including giant tube worms, mussels, shrimp, and eel-like fish.
The bacteria play a critical role in this ecosystem as they are the primary producers, creating the foundation of the food chain through chemosynthesis. This unique ecosystem is able to thrive in an otherwise inhospitable environment due to the presence of hydrothermal vents and the specialized organisms that have evolved to utilize their resources. T
he discovery of these deep sea ecosystems has broadened our understanding of the diversity of life on Earth and the potential for life to exist in extreme environments.
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A sequence is defined recursively by the formula f(n + 1) = –2f(n). The first term of the sequence is –1.5. What is the next term in the sequence?
Answers
Answer:
3
Explanation:
n = - 1.5
f(n+1) = -2f(n)
f(n+1) = -2 * -1.5
f(1+1) = 3
f(2) = 3
Can you help me with the question listed in the pictures below? Please and thank you. Will mark BRAINLIEST!!! :)
Answers
Need help ASAP with this answer
Answers
Answer:
C.
Explanation:
Animals found in the tundra include the musk ox, the Arctic hare, the polar bear, the Arctic fox, the caribou, and the snowy owl. Many animals that live in the tundra, like the caribou and the semipalmated plover, migrate to warmer climates during the winter.
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What part of the microscope is used to move an objective lens into place?
Answers
Answer:
The ocular micrometer has no units. Revolving Nose Piece - Several objective lenses of varying magnification and numerical aperture are mounted on the revolving nosepiece. The nosepiece must click into place for the objective lens to be in proper alignment.
Today, our species numbers more than _____ billion individuals, spread all over the globe.
Answers
Today, our species numbers are more than 7 billion individuals, which are spread all over the globe.
According to the scientific research or U.N.'s population division, it has been found that there are around 7 billion individuals approximately, and it has also been assumed that by the end of this year 2022, there will be approximately 8 billion species on the earth.
Therefore, By 2045, it has been predicted that the global population will reach nine billion. However, as of now, the global individuals are counted to sit at around 7.91 billion species approximately, according to the U.N.'s population research.
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Which method of heat transfer can occur in empty space?.
Answers
This is the form of heat transfer that doesn’t need a medium to transfer through.
That’s how heat from the sun gets to earth, even though empty space is very cold.
Answer:
Radiation is a heat transfer process that does not depend upon the contact between the heat source