Influenza is a bacterial infection whose symptoms include sore throat and fever. True or False
Answer: Im positive is true i hope this helps
Explanation: i leanded this last year
os protozoarios tambem sao chamados de?
Answer:
protozoário
Explanation:
esse é o outro termo para protozoários
Explain the key differences between meiosis and mitosis, and explain explain why mitosis in a triploid (3n) cell can occur easily but meiosis is difficult
Meiosis is a specialized cell division process that produces haploid gametes with genetic diversity, while mitosis is a cell division process that results in two genetically identical diploid cells. Mitosis in triploid cells can occur easily because it involves the replication and equal distribution of chromosomes.
Meiosis is a specialized cell division process that occurs in sexually reproducing organisms. It involves two successive divisions, Meiosis I and Meiosis II, resulting in the formation of haploid cells from diploid cells. The primary purpose of meiosis is to generate gametes (sperm and eggs) with half the chromosome number of the parent cell.
Meiosis I involves the homologous chromosomes pairing, crossing over, and their separation into two daughter cells. This division reduces the chromosome number by half. Meiosis II is similar to mitosis but without DNA replication, and it separates the sister chromatids of each chromosome into four haploid daughter cells
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the diagram represents apparatus used to investigate osmosis
pls help pls pls pls
Answer:
the solution in the tube will rise.
Explanation:
water molecules move across the semipermeable membrane into the tube containing the starch solution. However the starch molecules are too large to pass across the semipermeable membrane hence remain in the tube.
Organisms that reproduce by undergoing mitosis are carrying on
sexual reproduction.
asexual reproduction.
Answer:
asexual reproduction l
2. Number the steps of protein synthesis 1-4 (1 being the beginning and 4 being the
end).
tRNA carries amino acids to the ribosome and matches with the
correct codon.
mRNA strand attaches to a ribosome.
amino acids are linked together by peptide bonds to create protein.
DNA is unzipped and the bases are used to code for a strand of
mRNA.
Proteins synthesis includes transcription and translation. 1) DNA is unzipped and the bases are used to code for a strand of mRNA. 2) mRNA strand attaches to a ribosome. 3) tRNA carries amino acids to the ribosome. 4) Amino acids are linked by peptide bonds to create protein.
------------------------------
TRANSCRIPTION
In protein synthesis, the first step is to synthesize messenger RNA, mRNA.
The transcription is the coping process of the DNA section, and it happens in the nucleus.
After that, the translation occurs when the formed mRNA moves to the cytoplasm through the nucleus membrane pores.
TRANSLATION
Once in the cytoplasm, it begins the translation process.
mRNA meets a free ribosome that is the primary structure for protein synthesis.
Ribosomes are composed of two subunits, a big one and a small one.
They also associate with different tRNA that carries amino acids.
The ribosome reads mRNA in the 5´ to 3´ direction, and, according to the codons that are being readen, tRNA transfers the correct amino acids to build the polypeptide chain.
Each tRNA has two important sites. One of them is the antidocon that couples with the codon of the mRNA molecule. The other site couples with the coded amino acid.
The new amino acid joins the growing chain through peptidic bonds between the carboxyl and amino groups.
The tRNA leaves the ribosome and is free to join another amino acid and repeat the cycle.
The protein is synthesized from the amino terminus to the carboxy terminus, while the added amino acids to the chain are coded by a codon formed by three bases in the mRNA.
The start and stop codons are used as signals of the synthesis initiation and finish. The ribosome beggins protein synthesis when reading the start codon, and when reaches the stop codon, protein synthesis is over.
According to this theoretical framework, we can order the steps.
1) DNA is unzipped and the bases are used to code for a strand of
mRNA ⇒ Transcription ⇒ Nucleus
2) mRNA strand attaches to a ribosome ⇒ Translation ⇒ Cytosol
3) tRNA carries amino acids to the ribosome and matches with the
correct codon ⇒ Translation ⇒ Cytosol
4) amino acids are linked together by peptide bonds to create protein ⇒ Translation ⇒ Cytosol.
--------------------
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Which of the following are examples of inorganic nutrients? A) vitamins. B) lipids. C) carbohydrates. D) minerals. D) minerals.
Answer: minerals, minerals, and vitamins and carbohydrates.
Explanation:
Ras is a GTP-binding protein that is often defective in cancer cells. A common mutation found in cancer cells causes Ras to behave as though it were bound to GTP all the time, which will cause cells to divide inappropriately. From this description, the normal Ras gene is a/an
From this description, the normal Ras gene is normal Ras gene is a proto-oncogene.
Proto-oncogenes are normal genes involved in regulating cell growth and division. They play essential roles in cellular processes, including signal transduction pathways that control cell proliferation, differentiation, and survival.
However, when certain mutations or alterations occur in proto-oncogenes, they can become oncogenes, promoting uncontrolled cell growth and contributing to the development of cancer.
In the case of Ras, it is a proto-oncogene that codes for the Ras protein.
Thus, the Ras protein is a GTP-binding protein that acts as a molecular switch in intracellular signaling pathways, relaying signals from cell surface receptors to the nucleus.
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information regarding temperature is processed by cells in the skin.
The statement "information regarding temperature is processed by cells in the skin" is true.
The skin cells are responsible for processing the information about the temperature in the surroundings. The skin is the largest organ of the body and it plays an important role in sensing the surrounding environment. It is made up of different types of cells including the epidermal cells, dermal cells, and sensory cells. The sensory cells in the skin are responsible for sensing different stimuli including pressure, touch, and temperature. The skin temperature receptors are located in the dermis of the skin. These receptors are responsible for sensing the temperature changes in the surroundings. When the temperature of the environment changes, these receptors send signals to the central nervous system (CNS) via nerve fibers. The CNS then processes this information and sends a response back to the skin in order to regulate the body temperature.
Therefore, it can be concluded that cells in the skin are responsible for processing the information regarding temperature.
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Select the correct answer. If the DNA content of a diploid cell in prophase 1 is x, what would it be for the same cell at prophase II? A. 2x B. X4 Oc. x12 /2
Answer:
The right answer is X/2
Explanation:
the daughter cell will end up with X / 2 DNA content when it starts the second division (prophase II). I
hope this helps!
Answer:
3
Explanation:
how long does it take for a ziploc to biodegrade
plastic items take up to 1000 years to decompose in landfills. But plastic bags we use in our everyday life take 10-20 years to decompose, while plastic bottles take 450 years.
I hope this helps
2. List and describe two characteristics that distinguish primates from other mammals.
The two characteristics that distinguish primates from mammals are specialized behavior and unspecialized structure.
Primates are characterized by opposable thumbs, forward-facing eyes, and a low sense of smell. Primates have opposable thumbs because they adapted to tree living. All common ancestors of primates have opposable thumbs.
Primates have larger brains (in proportion to their body weight) than other mammals. They also rely more on visual perception at the cost of olfactory perception (which is the primary sense of smell in most mammals).
These characteristics are more prominent in monkeys, and much less so in Loris and Lemurs.
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1. How many atoms are present in 8. 500 mole of chlorine atoms?
2. Determine the mass (g) of 15. 50 mole of oxygen.
3. Determine the number of moles of helium in 1. 953 x 108 g of helium.
4. Calculate the number of atoms in 147. 82 g of sulfur.
5. Determine the molar mass of Co.
6. Determine the formula mass of Ca3(PO4)2
The number of atoms in 8.500 mol of chlorine atoms is 5.1167 x 10²⁴ atoms of chlorine
The mass of 15.50 moles of oxygen is 247.98 g
The number of moles of helium in 1.953 x 10⁸ g is 4.880 x 10⁷ moles
The number of atoms present in 147.82 g of sulfur is 2.774 x 10²⁴ atoms of sulfur
The molar mass of Co (cobalt) is 58.93 g/mol.
The formula mass of Ca₃(PO₄)₂ is 310.18 g/mol.
What is the number of atoms present in 8. 500 mole of chlorine atoms?The number of atoms is determined as follows:
1 mole of atoms contains 6.022 x 10²³ atoms
In 8.500 moles of chlorine atoms, the number of atoms present would be:
8.500 mol x 6.022 x 10²³ atoms/mol = 5.1167 x 10²⁴ atoms of chlorine
The molar mass of oxygen is 15.999 g/mol.
The mass of 15.50 moles of oxygen would be:
15.50 mol x 15.999 g/mol = 247.98 g
The molar mass of helium is 4.003 g/mol.
The number of moles of helium in 1.953 x 10⁸ g would be:
1.953 x 10⁸ g / 4.003 g/mol = 4.880 x 10⁷ moles
The molar mass of sulfur is 32.06 g/mol.
The number of moles of sulfur in 147.82 g would be:
147.82 g / 32.06 g/mol = 4.608 moles
The number of atoms present will be:
4.608 mol x 6.022 x 10²³ atoms/mol = 2.774 x 10²⁴ atoms of sulfur
The molar mass of Co (cobalt) is 58.93 g/mol.
The formula mass of Ca₃(PO₄)₂ will be determined as follows:
Ca: 3 x 40.08 g/mol = 120.24 g/mol
P: 2 x 30.97 g/mol = 61.94 g/mol
O: 8 x 16.00 g/mol = 128.00 g/mol
Formula mass of Ca₃(PO₄)₂ = 120.24 + 61.94 + 128.00
Formula mass of Ca₃(PO₄)₂ = 310.18 g/mol.
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Most inclusive means highest position in taxonomic categories so At the very top is the kingdom which is the broadest category, followed by phylum, class, order, family, genus, and species. So here answer is b)class.
The following taxonomic categories is the highest in hierarchy: Class. The correct option is C.
Taxonomic categories are hierarchical classifications used to organize and categorize living organisms based on their evolutionary relationships. The categories are arranged in a hierarchical manner, with each level becoming more inclusive than the previous one.
In this hierarchy, the category that is inclusive most is the highest level, which is the Kingdom. However, the given options do not include Kingdom as a choice. Among the provided options, the category that is highest in hierarchy and inclusive of the others is the Class.
Order is a lower category within Class, species is a lower category within genus, and genus is a lower category within family. Therefore, Class encompasses multiple Orders, species encompasses multiple individuals within a genus, and genus encompasses multiple species within a family. Thus, Class is the most inclusive category among the given options. The correct option is C.
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Complete question:
Of the following taxonomic categories, which one is inclusive most (that is the highest in hierarchy)?
A. Order
B. species
C. class
D. genus
Each spring, high school students, college interns, and retirees count and weigh tiny glass eels in streams that feed into the hudson river. they report their observations to the new york state department of environmental conservation hudson river estuary program and the national estuarine research reserve system, who depend on volunteers, to help build a database of information about glass eels. the observations that these volunteers make would best be described as__________
In streams that pour into the Hudson River every spring, high school students, college interns, and retirees weigh and count the tiny glass eels. the observations that these volunteers make would best be described as observational studies
They share their findings with the volunteer-run national estuarine research reserve system and the Hudson River Estuary Program of the New York State Department of Environmental Conservation in order to contribute to the creation of a database of knowledge on glass eels. These volunteers' observations are best characterized as discovery science.
What is science of discovery?The goal of discovery science, also known as discovery-based science, is to identify novel patterns, relationships, and hypotheses via the examination of extensive experimental data.
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The observations that these volunteers make would best be described as___ observational studies
What is observational study?
Observational studies involve the study of participants with none forced change to their circumstances, that is, with none intervention. Although the participants' behaviour may change under observation, the intent of observational studies is to research the 'natural' state of risk factors, diseases or outcomes
Why are observational studies important?
They help to investigate relationships that are unable to be tested under randomised controlled experiments, can help provide insight and develop hypotheses on what subsequent randomised evidence is required for future research, and may provide an understanding on how things work in clinical practice
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How many molecules can one molecule of myoglobin bind? why is this number diff erent from that of hemoglobin? why do you think that myoglobin binds oxygen more tightly than hemoglobin?
One molecule of myoglobin can bind only one molecule of oxygen. This number is different from that of hemoglobin because hemoglobin can bind up to four molecules of oxygen.
The difference in binding capacity is due to the distinct structures and functions of these two proteins.
Myoglobin is a monomeric protein with a single heme group, allowing it to bind one oxygen molecule. Its primary function is to store oxygen
in muscle tissues and provide a steady supply of oxygen during periods of high demand, such as intense physical activity.
Hemoglobin, on the other hand, is a tetrameric protein with four heme groups, each capable of binding an oxygen molecule.
Hemoglobin's main role is to transport oxygen from the lungs to the body's tissues and to carry carbon dioxide back to the lungs for exhalation.
Myoglobin binds oxygen more tightly than hemoglobin due to its unique physiological role. As an oxygen-storage protein,
myoglobin needs to have a high affinity for oxygen to ensure that it can effectively hold onto and release oxygen when needed. In contrast,
hemoglobin must be able to both pick up and release oxygen as it travels through the circulatory system, requiring a more moderate affinity for oxygen.
In summary, myoglobin can bind one oxygen molecule, while hemoglobin can bind four. This difference is due to their distinct structures and functions, with myoglobin serving as an oxygen storage protein
and hemoglobin as an oxygen transport protein. Myoglobin's higher affinity for oxygen ensures efficient oxygen storage and release in muscle tissues.
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How does charles darwin fit in to the story of the piltdown forgery?
The Piltdown forgery was a notorious hoax in the field of anthropology, where a supposed fossil of an early human ancestor was found in England in 1912.
The hoax went undiscovered until the 1950s, and it was eventually revealed that the fossil was a composite of several different species, including a human skull and an orangutan jaw.
Charles Darwin's theories on evolution played a significant role in the Piltdown forgery. The hoax was created during a time when the debate over human evolution was highly contentious,
and some scientists were eager to find evidence of an early human ancestor. The Piltdown forgery was seen as
supporting evidence for the idea that human evolution had taken place in Europe, rather than in Africa, as Darwin had suggested.
The Piltdown forgery was also a reflection of the cultural and social attitudes of the time. British society at the turn of the century was deeply invested in the idea of British exceptionalism
and the idea that the British race was superior to others. The forgery played into this idea, as it suggested that the "missing link" in human evolution had been found in England.
In conclusion, Charles Darwin's theories on evolution played a role in the Piltdown forgery, as the hoax was created in response to the debates surrounding human evolution in the early 20th century.
The forgery was also a reflection of the cultural and social attitudes of the time, which placed great value on British exceptionalism and the idea of British superiority.
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The simulation shows a game of tug-of-war. Place a blue team and a red team with same-sized people on each side of the rope. What can you say about the sizes of the left and right arrows?
The sizes of the left and right arrows should be the same.
In the game of tug-of-war, the sizes of the left and right arrows represent the relative strengths of the blue team and the red team. If the blue team is stronger and pulling harder, the size of the left arrow would be larger than the size of the right arrow.
Conversely, if the red team is stronger, the size of the right arrow would be larger than the size of the left arrow. The sizes of the arrows indicate the force exerted by each team and provide a visual representation of the balance of power in the game.
In tug-of-war, the objective is for one team to overpower the other and pull the rope towards their side. The larger the arrow representing a team's strength, the greater their force and ability to move the rope in their direction.
The size of the arrows serves as a visual cue for spectators to understand which team has the advantage at any given moment. It helps to create a sense of competition and excitement as the teams struggle to gain control of the rope.
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What behavior is observed if the voltage across a neuronal membrane is set to -20 mV?
a.The potassium channel opens, and K+ ions flow in.
b.The sodium channel opens, and Na+ ions flow in.
c.The voltage-gated sodium and potassium channels both remain closed.
d.The sodium channel opens, and Na+ ions flow out.
The sodium channel opens, and Na+ ions flow in is the correct behavior observed when the voltage across a neuronal membrane is -20 mV.
The stable state of the cell is referred to as the "resting membrane potential," which is a dynamic process that balances ions that leak down their concentration gradient and ions that are pushed back up their concentration gradient. The resting membrane potential will remain unchanged regardless of external factors.
When a voltage across a neuronal membrane is set to -20 mV, this facilitates the opening of voltage-gated sodium channels in the neuronal membrane. This is because the concentration of Na+ is higher outside than inside the cell.
Therefore, the ions will rush into the cell by chemical and electrical gradients. As the sodium ions keep entering the cell, it will cause the membrane less negative. This process is known as depolarization.
Therefore, the correct statement is option b.
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The initial population of a bacteria colony is observed to be 500 bacteria. The population shows a growth rate of 50% per day, and the carrying capacity of the surrounding is estimated to be 2,000,000 bacteria. To the nearest whole number, find the population of bacteria after 15 days. A 165,822 bacteria B 622,707 bacteria C) 903,430 bacteria 2,000,000 bacteria
The population, to the nearest whole number, of bacteria after 15 days is approximately 4,769 bacteria, The correct option is E, None of the above.
To find the population of bacteria after 15 days, we can use the formula for exponential growth:
N = N₀ * \((1 + r)^t\)
Where: N = Final population after time t N₀ = Initial population r = Growth rate per time period t = Time period
Given: N₀ = 500 bacteria r = 50% per day (or 0.5) t = 15 days
Plugging in the values, we have:
N = 500 * \((1 + 0.5)^{15\)
Calculating this expression:
N = 500 * \((1.5)^{15\) N
= 500 * 9.537 N
= 4,768.5
Thus, the correct option is E, None of the above.
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The question is inappropriate; the correct question is:
The initial population of a bacterial colony is observed to be 500 bacteria. The population shows a growth rate of 50% per day, and the carrying capacity of the surrounding area is estimated to be 2,000,000 bacteria. To the nearest whole number, find the population of bacteria after 15 days.
A. 165,822 bacteria
B. 622,707 bacteria
C. 903,430 bacteria
D. 2,000,000 bacteria
E. None of the above
2. Consider all the "energy" that was "lost" in the food chain during the activity.
In an actual ecosystem how might this energy be used? Explain.
Answer:
Energy that is not used in an ecosystem is eventually lost as heat. Energy and nutrients are passed around through the food chain, when one organism eats another organism. Any energy remaining in a dead organism is consumed by decomposers.
What are the impacts of the Prdue Pharma OxyContin scandal. Please provide detailed answers with references from the scandal in an orderly manner. Please mostly focus on the impacts related to the case not history.
Advanced Accounting
The impacts of the Purdue Pharma OxyContin scandal include increased opioid addiction and overdose deaths, legal consequences and financial penalties, loss of trust and reputation, increased scrutiny and regulation of opioid prescribing, and a focus on prevention, treatment, and harm reduction.
The Purdue Pharma OxyContin scandal had significant impacts, including the following:
Increase in opioid addiction and overdose deaths: OxyContin, a powerful opioid painkiller, was aggressively marketed by Purdue Pharma, contributing to the opioid crisis in the United States. The scandal led to a surge in opioid addiction rates and a sharp increase in overdose deaths.Legal consequences and financial penalties: Purdue Pharma faced numerous lawsuits and legal actions from individuals, states, and the federal government. In 2020, the company pleaded guilty to criminal charges and agreed to pay billions of dollars in fines and settlements.Loss of trust and reputation: The scandal severely damaged the reputation and public trust in Purdue Pharma as well as the pharmaceutical industry as a whole. The deceptive marketing practices employed by the company undermined the credibility of the company and its claims regarding the safety and efficacy of OxyContin.Increased scrutiny and regulation of opioid prescribing: The scandal prompted increased scrutiny and regulation of opioid prescribing practices by healthcare providers and government agencies. It led to the implementation of stricter guidelines, monitoring programs, and prescribing restrictions to curb the overprescribing and misuse of opioids.Focus on prevention, treatment, and harm reduction: The OxyContin scandal highlighted the need for a comprehensive approach to address opioid addiction, including increased efforts in prevention, access to evidence-based treatment, and harm reduction strategies such as naloxone distribution and syringe exchange programs.It is important to note that the impacts of the Purdue Pharma OxyContin scandal are ongoing, and efforts to address the consequences and prevent future harm are still being pursued. The references for detailed information on this topic can be found in various news articles, investigative reports, legal documents, and government reports related to the Purdue Pharma OxyContin scandal.
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You can only transport polar substances using
facilitated diffusion
Explanation:
hope it helps
Please help me really quick :)
Answer:
carbon dioxide is removed by respiratory organs
Explanation:
the cardiovascular system transports waste products to other systems
Plants using the CAM pathway occur in many locations but are most common in very arid locations, such as deserts. What deserts occur in North America and where are these deserts located?
The desert that occurs in North America is the Great Basin Desert and it is located at Nevada of North America.
CAM pathway, which is also called Crassulacean Acid Metabolism, is a pathway that involves carbon fixation that occurs in plants growing in arid areas.
With this pathway these plants are able to photosynthesize during the day, but only exchange gases at night.
An arid habitat is an environment that is characterized by extreme lack of water, example is the desert.
In North America, the desert that occurs there is the Great Basin Desert. It spreads into different states which include:
NevadaWestern Utah, Eastern California, andIdaho.But the major part of Nevada is occupied by the Great Basin Desert.
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Could someone help me with biology?
Question: Explain the following statement as if you had to explain it to your parents: "All systems and devices in the body help maintain homeostasis. "
Thank you in advance!
Answer:That’s a true statement, the devices in the body do help maintain homeostasis . Like your brain, they’re important factors in your body that makes the things in your body controlled for movement and adjustments .
Explanation:
Which process results in a cell containing the same DNA as its parent cell? mitosis meiosis gamete formation fertilization
Answer:
The correct answer would be A. mitosis.
Explanation:
Mitosis is a type of cell division which results in the formation of two daughter cells each containing same DNA as its parent cell.
It usually takes place in somatic cells of eukaryotic organisms.
It helps in growth and repair of cells or tissues in multi-cellular organisms.
In contrast, meiosis takes place in germ cells to produce haploid gametes. Gametes contains half the number of chromosomes present in parent cell. In addition, crossing over takes place in meiosis which results in the genetic variation.
Answer: The answer is A.
Explanation: Because I got it correct.
Water is always _________________ around the earth.
Answer:
Floating
Explanation:
Explain why a river forms a valley. pls help
Answer:
Erosion.
Explanation:
Erosion is when rocks/dirt move from one place to another. Erosion happens due to flowing water such as streams or rivers. Over time, these streams/rivers can erode the land around it to create valleys.
Hope that helps!
The improving emotion regulation during one's late teen years partially results from improved connections between the frontal lobes and the _____________.
A) Limbic system
B) Brainstem
C) Cerebellum
D) Thalamus
The improving emotion regulation during one's late teen years partially results from improved connections between the frontal lobes and the A) Limbic system.
A key component of behaviour is the limbic system. The complex functional neuroanatomy of the limbic system and its numerous circuits may help to explain some of the symptoms of neuropsychiatric diseases. The amygdala's function in numerous anxiety disorders and emotional memory has been uncovered via unwavering research.
The limbic system is the area of the brain that controls our emotions and behavioural responses, particularly when it comes to behaviours like feeding, reproducing, and raising offspring as well as fight-or-flight reactions, which are all necessary for survival.
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