Which of the following cells is least differentiated? A. homeoboxes. B. adult stem cells. C. embryonic stem cells. D. pancreatic cells
Answers
The least differentiated cell among the given cells is embryonic stem cells. So the correct answer is option C.
Stem cells are the human body's primary cells that have the ability to divide and change into various other types of cells. They are unspecialized and can differentiate into more than one type of cell. Stem cells have the ability to regenerate tissues, and they can be used in the treatment of many diseases. Different types of stem cells are:
Embryonic stem cells: These are the cells that are extracted from the embryo, which is in the blastocyst phase.Adult stem cells: These are the cells that are found in specific tissues of the body and can only differentiate into the particular cell type of the tissue they are found in.Induced pluripotent stem cells (iPSCs): These cells are generated from mature, fully differentiated cells that are reprogrammed into a stem-like stateLearn more about Stem cells: https://brainly.com/question/18243320
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Help ASAP
Using a microscope a student observes small circular cells that have a cell wall but no nucleus have based on their observations how would the student classify the cells A bacteria B protist C plant D animal
Answers
Explanation:because it has a cell wall but no nucleus
Which word best describes the term vaccinate?
heal
cure
prevent
promote
Answers
Answer:
Prevent.
Explanation:
In the diagram below, sunlight has heated the upper layer of the ground. The soil below the surface is much cooler.
Heat from the surface is transferred underground by _______.
A. condensation
B. radiation
C. conduction
D. Convection
Answers
Answer:
C. conduction
Explanation:
Conduction is the transfer of heat between objects in contact with each other as a result of molecular action. Conduction occurs within and between all states of matter.
Answer:
C. conduction
Explanation:
I did it on study island
Р
R
S
Which box depicts the simplest level of organization?
A)
Р
B)
O
R
D)
n
Answers
Answer:
i'm sorry if i get it wrong but i think its s
Explanation:
How are the cormorants found on the Galapagos Islands different than ones in South America?
Answers
Answer: galapagos cormorants are flightless
Explanation: flight is energy expensive. Cormorants in a remote archipelago don’t have anywhere to fly to. Natural selection favours energy efficiency.
This peripheral blood smear is from a 42-year-old man with a past medical history significant for hypertension who presents with progressive fatigue and weakness over the past month. He indicates generalized abdominal fullness. Laboratory data include: WBC = 129.7 x 10^3/uL , RBC = 4.43 x 10^6/uL , HGB = 13.0 g/dL, MCV = 91 fL, RDW = 15%, and PLT = 309 x 10^3/uL. Identify the following cells and answer the accompanying questions.
1.What cytochemical stain might be done on the peripheral blood smear to aid in diagnosis?
2.What would you expect the results of the special stain to be ?
3.Explain your answer Calculate the Mean corpuscular Hemoglobin Concentration
4.Calculate the Hct What is this disease?
5.Name the chromosomes associated with this disease. Explain the genetic translocation associated with this disease
Answers
1. A cytochemical stain that might be done on the peripheral blood smear to aid in diagnosis is a myeloperoxidase (MPO) stain. 2. If a myeloperoxidase (MPO) stain is performed, the results would be negative. 3. The mean corpuscular hemoglobin concentration (MCHC) cannot be determined with the given data since the hematocrit (Hct) value is not provided.
1. A cytochemical stain that might be done on the peripheral blood smear to aid in diagnosis is a myeloperoxidase (MPO) stain.
2. In this case, if a myeloperoxidase (MPO) stain is performed, the results would be negative.
3. The mean corpuscular hemoglobin concentration (MCHC) is calculated by dividing the hemoglobin concentration (HGB) by the hematocrit (Hct) and multiplying by 100. However, the information provided in the question does not include the Hct value, which is necessary for calculating the MCHC. Therefore, it is not possible to determine the MCHC with the given data.
4. The hematocrit (Hct) can be calculated by multiplying the red blood cell count (RBC) by the mean corpuscular volume (MCV) and dividing by 10. In this case, the RBC count is 4.43 x 10^6/uL and the MCV is 91 fL. Using the formula: Hct = (4.43 x 10^6) x (91) / 10, the calculated Hct is 40.273%.
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suppose you studied a watershed ecosystem (an ecosystem where all the water runoff drains into a single body of water) in depth and measured the amount of water that evaporates, the amount of water that goes through transpiration, and the amount of water the watershed gains through precipitation. if you were to add the total amount of water that leaves the watershed by both evaporation and transpiration, would you expect that to be larger or smaller than the amount of water that the watershed gains through precipitation? explain your answer.
Answers
In a watershed ecosystem, the balance between water inputs and outputs is essential for maintaining its health and stability. Precipitation is a key input of water, while evaporation and transpiration are the main processes by which water is lost from the ecosystem.
It's difficult to predict whether the total amount of water lost through evaporation and transpiration would be larger or smaller than the amount of water gained through precipitation without specific data. However, in a well-balanced watershed ecosystem, these processes should be roughly equal over long periods, ensuring that the water resources are maintained at a sustainable level. If the combined water loss through evaporation and transpiration is greater than precipitation, it could lead to water scarcity and potentially stress the ecosystem. Conversely, if precipitation exceeds the combined evaporation and transpiration, it might cause flooding or other issues related to excessive water accumulation.
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a. decreasing urinary output b. bradycardia c. decreasing systolic pressure d. increasing pulse
Answers
Based on the given terms, it seems like the individual in question may be experiencing some form of cardiovascular or renal dysfunction.
Specifically, decreasing urinary output could be a sign of reduced kidney function, while bradycardia (a slower-than-normal heart rate) and decreasing systolic pressure (the pressure of blood against the walls of arteries when the heart beats) could indicate a problem with the heart or blood vessels.
On the other hand, an increasing pulse rate may be the body's compensatory response to decreased blood pressure or decreased cardiac output. To properly diagnose and treat the individual's condition, further medical evaluation and testing would likely be necessary.
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why does vibrations create sound?
Answers
Answer:
Sound is a type of energy made by vibrations. When any object vibrates, it causes movement in the air particles. These particles bump into the particles close to them, which makes them vibrate too, causing them to bump into more air particles. This movement, called sound waves, keeps going until they run out of energy.
Answer:
because of energy
Explanation:
vibrations are a kind of energy and sound is also a kind of energy
when during the cell cycle are chromosomes visible? group of answer choices only when they are being copied during mitosis chromosomes are always visible. only during the g phase only during interphase
Answers
During the cell cycle, chromosomes are visible only during mitosis. This is when the chromosomes are divided and distributed evenly into two daughter cells.
Mitosis is a process in which a cell separates its chromosomes into two identical sets. Chromosomes can only be seen during mitosis. The chromosomes are first copied, and the copies are pulled apart during the mitotic process.
Only during mitosis are chromosomes visible. Chromosomes, unlike mitosis, are not always visible. During the G1, S, and G2 stages of interphase, cells typically spend 90% of their time growing and replicating their organelles in preparation for cell division.
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what organelles are only in a plant cell
Answers
Answer:
Chloroplasts and cell walls only appear in plant cell. Chloroplasts help the plant appear green because of a substance inside the chloroplast called chlorophyll. Cell walls protect the cell by preventing unwanted bacteria or anything that could disturb the plant cell, out of the cell.
Hope this helps, have a good day!
DNA technology is used to find cures for genetic diseases such as Huntington's disease. Which of
these best explains the use of DNA technology in curing genetic diseases with gene therapy?
a. uses medicines to alter the genetic makeup of faulty genes
b. removes the faulty gene and replaces it with a working gene
C. causes mutation in faulty genes by exposing them to high-cnergy radiation
d. removes the faulty gene from the body without replacing it with another gene
Answers
Option B: removes the faulty gene and replaces it with a working gene, best explains the use of DNA technology in curing genetic diseases with gene therapy
Gene therapy is a medical strategy that addresses the underlying genetic issue in order to treat or prevent disease. Instead of utilizing drugs or surgery, gene therapy procedures allow doctors to treat a problem by changing a person's genetic composition.
The first gene therapy technique, also known as gene transfer or gene addition, was created to:
Add a new gene to cells to aid in the treatment of a disease.Introduce a healthy copy of the gene to replace the disease-causing altered copy.To know more about gene therapy:
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bacterial replication begins at a single, defined dna sequence known as
Answers
Bacterial replication begins at a single, defined DNA sequence known as the origin of replication (ori).
This is where the replication machinery, including DNA polymerase and other enzymes, bind and initiate the unwinding of the double-stranded DNA to begin replication. The ori sequence is typically relatively short, typically just a few hundred base pairs long, and has specific features that allow it to be recognized by the replication machinery. \
Once replication is initiated at the ori, it proceeds bidirectionally, with two replication forks moving away from the ori and replicating the DNA in opposite directions until they meet at the opposite side of the circular bacterial chromosome.
Thus, Bacterial replication begins at a single, defined DNA sequence known as the origin of replication (oriC). The origin of replication is the starting point where the process of duplicating the bacterial DNA commences, allowing for the successful division and reproduction of bacteria.
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The coenzyme _____ is the oxidizing agent in glycolysis. A) ADP D) FAD B) thiamine pyrophosphate E) biotin C) NAD+
Answers
The coenzyme NAD⁺ will be the oxidizing agent in glycolysis. Option E is correct.
In glycolysis, NAD⁺ (nicotinamide adenine dinucleotide) functions as the oxidizing agent. It plays a crucial role in the oxidation-reduction reactions that occur during glycolysis, which is the metabolic pathway responsible for the breakdown of glucose.
During the energy-yielding steps of glycolysis, glucose is converted into two molecules of pyruvate. In the process, several oxidation reactions take place, where certain molecules are oxidized, and NAD⁺ acts as the oxidizing agent by accepting electrons and hydrogen ions (H⁺). As a result, NAD⁺ is reduced to NADH, which carries the high-energy electrons and protons to later stages of cellular respiration for further energy extraction.
The conversion of NAD⁺ to NADH is a critical step in glycolysis because it helps to harvest energy from glucose. The NADH produced in glycolysis can then participate in subsequent stages of cellular respiration, such as the citric acid cycle and oxidative phosphorylation, to generate ATP.
Hence, E. is the correct option.
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--The given question is incorrect, the correct question is
"The coenzyme _____ is the oxidizing agent in glycolysis. A) ADP B) FAD C) thiamine pyrophosphate D) biotin E) NAD⁺."--
Choose the best description of the cell cytoskeleton.
Answers
Answer:
The cell cytoskeleton is a dynamic network of fibers that can be quickly dismantled and reassembled to change cell shape and the position of cell components,The fundamental functions of the cytoskeleton are involved in modulating the shape of the cell, providing mechanical strength and integrity, enabling the movement of cells and facilitating the intracellular transport of supramolecular structures, vesicles and even organelles.
Explanation:
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what not to do when handling acids and bases
Answers
Wear protective gear (goggles, long-sleeved clothes, and gloves) when using acids and bases. Do not allow acids or bases to come in contact with skin or eyes. Limit the amount of acids and bases transported for usage around the house. Cap the bottles of acid and base cleaners tightly.
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Rabbits are very popular domesticated animals, so popular that there are over 300 breeds of domesticated rabbits in the world. You attend a rabbit show and notice that all of the breeds vary in many characteristics, such as size, color, and fur length. You notice that there is weight information on the cages of all rabbit individuals at the show and decide to jot down data for two specific rabbit breeds (in pounds):
Breed A: 10, 8, 7, 10, 9, 9, 10, 9
Breed B: 10, 12, 14, 13, 10, 15, 11, 12
In three to five sentences, 1) calculate the average weights of the two rabbit breed groups, 2) describe some factors that could contribute to the different weights seen within breeds, and 3) describe how you would track and find the growth rate of the two rabbit breeds during an investigation.
Answers
Answer:
Average of breed a: 9 pounds, average of breed b: 12.125
Explanation:
10+8+7+10+9+9+10+9 = 72
72/8 = 9 pounds
10+12+14+13+10+15+11+12 = 97
97/8 = 12.125 pounds
The North Pole and the South Pole are
A:Classified as tundra biomes
B: Not home to any animals
C: not classified into major biomes.
D: Part of Aquatic Ecosystems
Answers
Answer:
A
Explanation:
classified as tundra biomes
this instrument is used to open the vaginal orifice for visual examination, what this instrument called?
Answers
a process where the cervix, vagina, and vulva are examined with a lighted, magnifying device called a colposcope. An device known as a speculum is used during colposcopy to expand the vagina.
So that the cervix may be seen more clearly. Colposcope: A device for medical use in examining the cervix; it allows the user to see inside a hollow space. The cervix, vagina, and vulva are examined during a colposcopy using a lit, magnifying equipment called a colposcope. The most popular tool used by gynaecologists to examine the vagina and cervix is the two-bladed, or bivalve, speculum.
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Please help I’ll put max points
Answers
answer ::::::::: there u go
Answer:
other answer
Explanation:
What is the speed of air inside our body at the time of sneezing?
Answers
Answer:
Mainstream understanding is that a sneeze is 100 mph, or ~45 m/s. However, this isn't even close to being true.. A study in 2013 (see link below) was conducted where they investigated the airflow dynamics of sneezing and breathing, and discovered that the highest velocities of a sneeze are around 10 mph, or 4.5 m/s.
Explanation:
Answer:
100 miles per hour
Explanation:
These organisms niche in an environment is to break down dead or decaying matter.
Group of answer choices
a. Carnivore
b. Producer
c. Herbivore
d. Detritivore
Answers
Answer: Detritivore
Explanation: These are vital organisms that grow by breaking down dead and decaying matter. Some of these are scavengers - macro-organisms that feed on dead or decaying matter, e.g. flies, cockroaches, earthworms. Others are decomposers, generally microscopic bacteria and fungi, that break down wastes. These are also called saprophytes and play an important role in returning nutrients to the soil from dead and decaying matter.
Answe this pls smart people need help
Answers
Answer:
i am pretty sure that the answer is, She tells you that it hurts.
Explanation:
If the girl is crying it is pretty obvious that it hurts. Everything else is like a hint to what medicine she needs. If she tells you that it hurts that not really a hint because almost every sickness hurts.
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he transcribed strand in DNA is: 5' to 3' sense antisense AUG all of the above
Answers
The transcribed strand in DNA is "5' to 3' sense." (Option A)
What is transcription?The transfer of genetic material from DNA to RNA is known as transcription. The DNA double helix separates during transcription, allowing the RNA polymerase enzyme to transcribe a single DNA strand. The resulting RNA molecule is single-stranded, and it has a sequence of nucleotides that are complementary to one of the DNA strands. RNA polymerase recognizes the sequence of nucleotide bases on the DNA molecule that signifies the start of a gene and binds to it.
The transcription occurs in a particular direction, that is, it begins at the promoter and ends at the terminator. In transcription, the enzyme RNA polymerase reads the DNA sequence and synthesizes RNA in the 5' to 3' direction. The RNA synthesized during transcription is referred to as the primary transcript and is then modified and processed to become a functional RNA molecule.
Thus, the correct option is A.
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The transcribed strand in DNA is from the 3' to 5' direction. This strand is complementary to the coding strand that has the same sequence as the RNA that is transcribed from the gene.
The sense strand (coding strand) is from the 5' to 3' direction. The RNA that is transcribed has the same sequence as the sense strand with T substituted with U. However, the RNA is from the 5' to 3' direction. The antisense strand is the noncoding strand that acts as the template for the RNA synthesis. This strand is from the 3' to 5' direction, the same direction as the transcribed RNA.
The codon AUG codes for the amino acid Methionine and is called the start codon as it signals the beginning of the open reading frame. Thus, the correct option is 'all of the above'.
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2b. Based on your answer for 2a, which reintroduction site would you expect to see the largest number of
surviving ferrets? (1)
a
El Cuervo (MX)
b. Cheyenne River
C. Badlands
d. FL Belknap
Answers
menarche and spermache are examples of ______________ sex characteristics.
Answers
Menarche and spermarche are examples of secondary sex characteristics.
Secondary sex characteristics are physical features that develop during puberty and are not directly involved in reproduction. In females, menarche is the onset of menstruation, which typically occurs between the ages of 11 and 14, and is a key indicator of the onset of puberty. Other secondary sex characteristics that develop in females include the growth of pubic and underarm hair, breast development, and widening of the hips. In males, spermarche is the onset of sperm production, which typically occurs between the ages of 12 and 16, and is also a key indicator of the onset of puberty. Other secondary sex characteristics that develop in males include the growth of facial, pubic, and underarm hair, deepening of the voice, and growth of the Adam's apple.
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Define translation (adding for extra letters cuz it had to be 20 characters long so ignore this)
Answers
Please help me write a REPLY! It should be evident you read the post and have a thoughtful response.
• The reply should be at least FIVE sentences total. Replies should not say "cool post", "good idea", etc., but answer the post based on the following criteria.
• Is the post detailed enough to describe the discussion topic?
• Does the post grab your interest? Why/not?
• If applicable, is the post supported with proper scientific sources and citations?
POST:
Genetic technology has brought about many advances in different fields, including agriculture. With the advent of CRISPR-Cas9 gene editing, scientists have been able to make precise changes to the genetic code of crops and livestock, leading to increased yields, better resistance to pests and disease, and improved meat quality. Research shows that “CRISPR-Cas9 edits genes by precisely cutting DNA and then letting natural DNA repair processes to take over. The system consists of two parts: the Cas9 enzyme and a guide RNA” (CRISPR/Cas9, 2022). This technology has been integrated into agriculture, with farmers and researchers using it to develop more sustainable and healthier food systems.
One of the most significant benefits of using CRISPR-Cas9 in agriculture is the potential to reduce the use of harmful chemicals. For instance, scientists have been able to develop crops that are more resistant to pests and disease, which reduces the need for pesticides and herbicides. This not only saves farmers money but also makes food safer and healthier for consumers. Reducing the use of these chemicals also has the potential to improve soil health and reduce water pollution, leading to a more sustainable food system. CRISPR-Cas9 also has the potential to improve crop yields. For example, researchers have used gene editing to develop crops that can withstand harsh weather conditions, such as drought and extreme temperatures. This means that farmers can produce more crops even in unfavorable conditions, improving food security and reducing the likelihood of food shortages. Additionally, researchers have used CRISPR-Cas9 to improve the nutritional content of crops, such as developing varieties of rice with higher levels of Vitamin A, which can help prevent blindness in children in developing countries.
The use of CRISPR-Cas9 in livestock has also shown great promise. Gene editing can improve the health and welfare of animals, for example, by developing livestock that are more resistant to diseases. This not only reduces the use of antibiotics in agriculture but also reduces the suffering of animals. Additionally, gene editing can improve the quality of meat, making it more nutritious and better tasting. This could potentially reduce the amount of meat required to meet nutritional needs, which could in turn reduce the environmental impact of livestock farming. However, despite these potential benefits, there are also some concerns surrounding the use of CRISPR-Cas9 in agriculture. One concern is that the technology could be used to produce “designer” crops or livestock, which could have unintended consequences for the environment and human health. For example, developing crops that are resistant to herbicides could lead to the overuse of these chemicals, leading to resistance in weeds and potential harm to human health. Similarly, developing livestock that are resistant to antibiotics could lead to the spread of antibiotic-resistant diseases, which would be detrimental to human health.
In conclusion, I do believe this to be effective. The integration of CRISPR-Cas9 gene editing into agriculture has the potential to greatly benefit society by improving crop yields, reducing the use of harmful chemicals, and improving the health and quality of livestock. However, there are also some concerns about the technology that must be carefully considered and addressed to ensure its safe and responsible use. The potential benefits and concerns surrounding the use of CRISPR-Cas9 in agriculture must be weighed carefully to ensure that this technology is used in a way that benefits both the environment and society.
Answers
I found your discussion about the potential reduction in the use of harmful chemicals in agriculture particularly interesting. The ability to develop crops that are more resistant to pests and disease could greatly reduce the need for pesticides and herbicides, which would make food safer and healthier for consumers. Additionally, the potential to improve soil health and reduce water pollution through the reduction in the use of these chemicals could have a significant impact on creating a more sustainable food system.
Your discussion of the concerns surrounding the technology was also very informative. The potential for the development of "designer" crops or livestock is a legitimate concern, as unintended consequences for the environment and human health could arise. It is important that these concerns are carefully considered and addressed to ensure that the technology is used in a safe and responsible manner.
Overall, your post provided a balanced and thoughtful discussion of the potential benefits and concerns surrounding the use of CRISPR-Cas9 in agriculture. The use of this technology could have a significant impact on improving crop yields, reducing the use of harmful chemicals, and improving the health and quality of livestock. However, it is essential that the technology is used in a way that balances these potential benefits with careful consideration of any potential risks.
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Hemoglobin binds to oxygen in the presence of protons. Briefly describe what happens when the pH in the solution decreases (starting pH is 7.4), and how this affects hemoglobin’s binding affinity to oxygen?
Answers
Hemoglobin binds to oxygen in the presence of protons. When the pH in the solution decreases, the hemoglobin's affinity for oxygen reduces. This process is known as the Bohr effect.
The hemoglobin molecule consists of four subunits, each containing an iron atom that binds to an oxygen molecule. The binding of oxygen to hemoglobin is influenced by several factors, including pH. The binding affinity of hemoglobin to oxygen is reduced as the pH of the solution decreases. This process is known as the Bohr effect.The Bohr effect is a phenomenon in which an increase in acidity (decrease in pH) or an increase in carbon dioxide concentration causes a decrease in the affinity of hemoglobin for oxygen. When hemoglobin binds to oxygen in the lungs, the pH is higher, resulting in a stronger bond between hemoglobin and oxygen. In peripheral tissues, where oxygen is needed, metabolic activity produces protons and carbon dioxide, resulting in a decrease in pH. This change in pH results in the release of oxygen from hemoglobin in the tissues, where it is needed for respiration.
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Name the infection agent that can be good or bad for the human body and scan even live on skin?
A. Fungi
B. Bacteria
C. Viruses.
Answers
Answer:
fungi
Explanation:
creates lung disease,,, etc
hope it helps :))
Answer:
B. Bacteria
Explanation:
viruses in most cases are not good for the human body since they mutate so much. while most germaphobes hate bacteria it is really useful and needed in the body. for example the amount of bacteria in our body that keeps us alive. but of course there are bad types of bacteria. like E coli. which is found in under cook and contaminated food.