Answer:
10mm , 0.0625mm
Explanation:
The size of the image of a cell that is 0.05mm in diameter viewed under a microscope with a 200x power lens would be 0.05mm * 200 = 10mm.
The size of the actual cell if an image of a cell is 50mm in diameter when viewed under a 800x microscope would be 50mm / 800 = 0.0625mm.
ALLEN
In many situations, algal reproduction is affected by external conditions. Look at this graph of hypothetical data that compares the growth rate of S. platensis over a period of 5 days when exposed to different light levels. Given these data, what light levels would you use for a bioreactor containing this species?
From the given graph it can be inferred that in the growth of Spirulina platensis alga, over a period of five days maximum biomass was produced at a light intensity of 2000 lux. So the light levels that would be optimum to use in a bioreactor would be 2000lux. Option C is correct.
What is the usefulness of S. platensis?Spirulina platensis is a microalgae. It is used to produce several fine chemicals. It is used in industries to produce proteins, vitamins, Beta-carotene, phycocyanin, and linolenic acid. It is also a great source of nutraceuticals.
The most crucial variables for the large-scale production of Spirulina biomass are nutrient availability, temperature, and light. Spirulina platensis has a high economic importance due to the production of a variety of pigments and nutraceuticals.
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The given question is incomplete. the most probable question is:
1. In many situations, algal reproduction is affected by external conditions. Look at this graph of hypothetical data that compares the growth rate of S. platensis over a period of 5 days when exposed to different light levels. Given these data, what light levels would you use for a bioreactor containing this species?
Options:
A. 500 lux
B. 1000 lux
C. 2000 lux
D. 3000 lux
Question- what type of circuit is in the diagram?
after during the activity, give your own definition of culture
What relationship can be determined from the following information: . The radioactive isotope iodine 131 has a half-life of 8.1 days and emits 0.8 MeV (milli-electronvolts) of energy . The radioactive isotope phosphorus 32 has a half-life of 14.3 days and emits 1.7 MeV of energy . The radioactive isotope phosphorus 33 has a half-ife of 25.5 days and emits 0.25 MeV of energy . The radioactive isotope sulfur 35 has a half-lfe of 875 days and emits 0.2 MeV of energy Multiple Choice O The longer the half-lIfe, the more energy emitted by the particles O The longer the hif ife the les energy emited by the porticles O Redotoopes of he same elemen must enst the same amountof energy in their emissions of the same element must emit the same amount of energy in their emissions and decay at the same rate. O Adjusted for time, radioisotopes emit the same amount of energy in their emissions O Energy and half-life are not directly related.
Option E: energy and half-life are not directly related, is the relationship determined from the given information about the radioactive isotope.
Half-life is the amount of time required by a nucleus if a radioactive isotope to lose half of its radioactivity. Each radioactive isotope has its own particular half-life that cannot be altered because of external and alternating factors like those of quantity and form of the material.
A radioactive substance is highly unstable and thus loses its energy by decaying. This means that the energy lost is directly proportional to the amount of the substance present. But energy of a radioactive substance is independent of it's half-life of decaying. This means that option E is the correct choice.
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Teddy mixed 3.0 moles of sodium hydroxide and 6.0 moles of ethanoic acid. did he make a buffer solution? explain your answer using a blacked equation.
Since hydrochloric acid and sodium hydroxide neutralize each other, the pH of the resultant solution is 7, and NaCl is created as a resultant. It is created by combining a strong base (NaOH) and a strong acid (HCl). A weak acid or basic, as well as its salt, should be used to make the buffer solution. There is no buffer solution that can be made by combining sodium chloride with water. As a result, sodium chloride and water cannot be utilized to create a buffer.
[tex]NaOH(aq) + HCl(aq)\\[/tex] → [tex]NaCl(aq) + H2O(l)[/tex]
A buffer solution can be made by combining a weak acid solution with a solution of salts of its conjugate base.
Both an acid and a base must be present for a buffer to be able to neutralize both acid and base while maintaining the pH of the solution constant. A weak acid can neutralize bases in a buffer, while a conjugate base can neutralize acids.
To guarantee that there is an adequate conjugate base in the solution, a salt solution of the conjugate base must be added directly. Weak acids do not dissociate sufficiently to provide a sufficient conjugate base in the solution.
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A grass with elongated tillers would likely regrow from __________________ if trimmed near grounf level
a. Basal buds
b. Axillary buds
c. horizontal roots
d. Intact growing points
A grass with elongated tillers would likely regrow from basal buds if trimmed near ground level.
What are basal buds?Basal buds are small growth points located at the base of a plant's stem near the soil surface. They have the potential to produce new shoots and leaves, and are an important factor in the regrowth and survival of many herbaceous plants.
When a plant is trimmed, cut back, or damaged, the basal buds can activate and produce new growth, allowing the plant to regenerate and continue to grow. This characteristic makes basal buds a valuable adaptation for many grasses and other plants that face regular disturbances, such as mowing or grazing, in their natural habitats.
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5. In humans, normal skin color (A) is dominant over albino (a) and diabete
has been found to be inherited (in some cases) through a recessive
allele. A diabetic albino man marries an normal woman whose mother
was an albino and whose father was diabetic. What are the genotypes
of the man and woman? What percentage of their children would be
expected to be both non-diabetic and have normal color?
The genotype of the man would be aadd and the genotype of the woman would be AaDd and the percentage of their children to be non-diabetic and have normal color is 25%.
What is albinism?A person with albinism will have extremely light skin, hair, and eyes. Albinism is an inherited disorder. They experience it because their bodies produce less melanin than normal. Skin, hair, and eyes are all colored by melanin.
Thus, the genotype of the man would be aadd and the genotype of the woman would be AaDd (she got an allele of albinism from her mother and an allele of diabetes from her father) and the percentage of their children to be non-diabetic and have normal color is 25%.
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The image is attached below:
What happens during a condensation reaction?
O A water molecule is consumed and a monomer is released.
OA water molecule is released and a monomer is attached.
O A water molecule and a monomer are both released.
OA water molecule is consumed and a monomer is attached.
1 of 8 QUESTIC
Answer:
(b)
Explanation:
In a condensation reaction, a water molecule is consumed and a monomer is attached to form a larger molecule.
Label the diagram
Transcription and Translation (Protein Synthesis)
Answer:
1-3 is transcription while 4-8 is translation.
Explanation:
The labeling of the diagram is as follows:
1: DNA. 2: mRNA.3: Codon.4: tRNA. 5: Anticodon.6: Amino acid.7: Ribosome. 8: Protein. What is Protein synthesis?Protein synthesis may be characterized as a type of biological process through which amino acids are sequentially arranged in large numbers and form a specific functional protein through the involvement of rRNA, tRNA, mRNA, and numerous enzymes.
When it comes to the process of protein synthesis, there are two steps, i.e. Transcription, and translation. Transcription involves the conversion of DNA into mRNA within the nucleus of the cell. While translation involves the conversion of mRNA into a functional protein. This step takes place in the cytoplasm of the cell.
Therefore, the labeling of the diagram is well mentioned above.
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Which of the following describes how the San Andreas Fault formed on Earth at a transformed boundary?
© Plates moved in closer
• Plates moved away from each other
• Plates slid past each other
• Plates moved with each other in the same direction
Plates moved in closer is best describes how the San Andreas Fault formed on Earth at a transformed boundary. Thus, option A is correct.
What is convergence?The convergence has been known as the a process where both the plates tend to move in closer as one plate overrides the other and the formation of a Himalayas has been described as the range that formed by the movement of the sediments that were bought by the Tethys sea.
Transform boundaries has been forms when the plates has slide past each other. Divergent boundaries has been formed when they moves away from each other. Convergent boundaries forms when the plates move toward each other.
Therefore, Plates moved in closer is best describes how the San Andreas Fault formed on Earth at a transformed boundary. Thus, option A is correct.
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Which of the following provides evidence of the Golgi apparatus and endoplasmic reticulum interacting to allow the cell to maintain homeostasis?
OPTIONS
When transport vesicles are received, chemicals are modified; the resulting products are packaged for transport to other parts of the cell.
Chemical messages are transported to all parts of the cell to signal the increase of protein synthesis and excretion of excess water.
Specific instructions code for the manufacturing of proteins, which are assembled and used as enzymes for the production of the cell’s energy.
Waste produced as a result of cellular respiration is packaged and stored for eventual release out of the cell through active transport.
"When transport vesicles are received, chemicals are modified; the resulting products are packaged for transport to other parts of the cell."
What is protein modification?The process of protein modification and transport, which involves the Golgi apparatus and endoplasmic reticulum working together. In this process, proteins synthesized in the endoplasmic reticulum are modified by the Golgi apparatus and packaged into transport vesicles for delivery to other parts of the cell.
This interaction between the Golgi apparatus and endoplasmic reticulum is important for maintaining cellular homeostasis by ensuring that proteins are correctly modified and delivered to their intended destinations within the cell.
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Answer:
The correct answer is When transport vesicles are received, chemicals are modified; the resulting products are packaged for transport to other parts of the cell. This statement provides evidence of the Golgi apparatus and Endoplasmic Reticulum interacting to allow the cell to maintain homeostasis because it describes the process in which chemicals are modified by the Golgi apparatus, packaged by the Endoplasmic Reticulum, and transported to other parts of the cell.
The scientist know know exactly the earth formed
A) No answer text provided
B) No answer text provided
C) False
D) True
Answer:
False
Explanation:
Earth has always existed, but scientists don't know exactly when. They believe that Earth formed around 4.5 billion years ago, but they aren't sure where it came from.Follow=Followlike=like
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If left alone, vines can eventually ‘choke’ a tree from getting the sunlight it needs to survive. What is the best description for this relationship?
A. Consumer - consumer
B. Producer - Consumer
C. Predator - Prey
D. Parasite - Host
Answer: D. Parasite - Host
Explanation:
The vines are taking the nutrients away from the tree, but not necessarily consuming the tree
Fat around organs
a-chemical messenger
b-protection
c-structure of cell membranes
Fat around organs are mostly used as a form of protection as it provides a from of cushion to reduce the effects of stress.
What is Visceral body fat?This is also known as 'hidden' fat, and it is referred to as a type of fat which is stored deep inside the belly, wrapped around the organs, including the liver and intestines.
Fat around organs are mostly used as a form of protection as it provides a from of cushion to reduce the effects of stress and other unpleasant situations to ensure that the organs aren'rt damaged and are able to perform optimally.
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During which step of aerobic cellular respiration is carbon dioxide produced?
What is a solution's absorbance, if its molarity is 0.18M?
If a solution's molarity is 0.18M, then its absorbance will be 0.5.
What is molarity?A chemical species' concentration in a solution, specifically the amount of a solute per unit volume of solution, is measured by its molar concentration. The number of moles per liter, denoted by the unit symbol mol/L or mol/dm³ in SI units, is the most often used unit denoting molarity in chemistry.
Molarity is directly proportional to the absorbance of any solution, if molarity increases, absorbance also increases. Therefore, if a solution's molarity is 0.18M, then its absorbance will be 0.5.
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Which step happens first in translation?
A. The amino acids form peptide bonds.
• B. A tRNA molecule attaches to a codon.
• C. The ribosome reaches the start codon.
• D. The amino acid pulls apart from tRNA.
Answer:
A. A tRNA molecule attaches to a codon.
Explanation:
The first step of translation is that a tRNA molecule attaches to a codon. These tRNAs (transfer RNAs) bring the amino acids to the ribosome - rRNA complex, where they connect to the codons and are arranged into a full protein.
In a baseball game, joseph hits a ball to the outfield. When does the ball have the most potential energy?.
Answer: When the ball is at its highest point, it has potential energy. When the ball is falling towards the table, it has kinetic energy. It has the most kinetic energy at the very end of its descent when it is moving the fastest.
Explanation:
A student wants to use objects she finds around the house to model Mercury, Venus, and Earth. Which model best compares the relative sizes of these three planets? a. Three basketballs b. Two basketballs and one softball c. Two softballs and one basketball d. One marble, one softball, and one basketball
The answer is D, she can make use of One marble, one softball, and one basketball
What are planetary bodies?According to the geophysical definition of celestial objects, a planetary-mass object (PMO), planemo, or planetary body is any celestial object big enough to establish hydrostatic equilibrium (to be spherical under its own gravity), but not enough to support core fusion like a star.
What different kinds of celestial bodies are there?
Planets.StarsSatellites.Comets.Asteroids.Meteors and Meteorites.Galaxies.Learn more about planetary bodies here:
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How did the rise of discriminatory groups affect the failure of reconstruction in south carolina?.
The advancements gained in South Carolina during Reconstruction were hampered by the emergence of hate groups like the Ku Klux Klan.
The development of hate groups like the Ku Klux Klan in South Carolina contributed significantly to Reconstruction's defeat. Black Americans were prevented from exercising their newly acquired political and social rights, such as voting and running for office, by these groups via the use of violence and intimidation. They also aimed to reinstate the previous social structure and uphold white supremacy. The ineffectiveness of the federal government in enforcing Reconstruction laws and safeguarding Black Americans from violent retaliation gave these groups more power and ultimately led to the breakdown of Reconstruction in South Carolina and other Southern states.
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Before recommending drastic changes or additional rules for athletes, what type of evidence or experiments would you need to see linking concussions to CTE and depression? Give one example in 1-2 sentences.
Answer:
Explanation:
To link concussions to Chronic Traumatic Encephalopathy (CTE) and depression, it is important to have controlled and long-term studies that follow a large cohort of athletes who have experienced concussions, comparing their brain health and mental health outcomes to those of a similar control group of athletes who have not experienced concussions. For example, a long-term study that uses imaging techniques such as MRI or PET scans to compare the brain structure and function of athletes who have experienced concussions to those who have not, and assesses the incidence of depression and other mental health outcomes, could provide important evidence linking concussions to CTE and depression.
What can you say about the heat flow based on the diagram above between the mug of hot chocolate and hand? What about heat flow from the hand to the ice cube? Where is the heat released and absorbed ? Which object releases and absorbs heat? what arrow best represents this heat flow?
Answer:
A and C
Explanation:
heat tranfer goes from hot to cold, or in more correct terms; heat transfers to the lower temperature.
6. How is prokaryote reproduction similar to mitosis? How is it different? (2) 7. A scientist is studying a type of thermophilic prokaryote. Are these most likely archaea or bacteria? How do you know? (2) Part 2: Eukaryotes 8. What two features do algae have that make them like plant cells? (2) 9. Why do you think scientists had problems deciding if euglenoids were more similar to plants or animals? (2)
Prokaryote reproduction is similar to mitosis in that it involves the replication and division of the genetic material, followed by cell division.
Explaining Procaryotes, and answers to other parts of the questionProkaryote reproduction is similar to mitosis in that it involves the replication and division of the genetic material, followed by cell division. However, prokaryotes do not have a nucleus, so the process is simpler and does not involve the formation of a mitotic spindle or the separation of chromosomes into daughter nuclei.
Thermophilic prokaryotes are most likely archaea, as they are known to thrive in extreme environments such as hot springs and deep-sea vents, whereas bacteria are more commonly found in moderate environments.
Algae have two features that make them like plant cells: they contain chloroplasts for photosynthesis and have a cell wall made of cellulose.
Scientists had problems deciding if euglenoids were more similar to plants or animals because they possess characteristics of both groups. Like plants, they have chloroplasts and can perform photosynthesis, but like animals, they can move using a flagellum and can consume other organisms for nutrients. This led to some debate about how to classify them, but they are now generally considered to be a type of protist.
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The seed plants became dominant during the late ___ when the climate became ___
a. Cretaceous; drier
b. Carboniferous; drier
c. Carboniferous; wetter
d. Cretaceous; wetter
e. Cambrian; wetter
Answer:
The correct answer is d. Cretaceous; wetter.
Explanation:
During the late Cretaceous period, the climate became wetter, which allowed seed plants to become dominant. The increased rainfall and moisture provided favorable conditions for the growth and reproduction of seed plants, which eventually displaced the earlier dominant forms of plant life such as ferns and mosses. This shift in dominance marked a major step in the evolution of plants and paved the way for the development of modern forests.
What is a hypertonic, hypotonic, and isotonic solution?
Answer:
Hypotonic has a lower concentration of fluid, sugars and salt than blood. Hypertonic has a higher concentration of fluid, sugars and salt than blood. Isotonic has similar concentration of fluid, sugars and salt to blood.
Which of the following is NOT part of an investigation?
A. pseudoscience
B. data
C. equipment
D. method
Pseudoscience is not part of an investigation. The correct option is A.
What is investigation?An investigation is a methodical, scientific procedure that involves observation, data collection, and analysis in order to provide an answer to a question or find a solution to a problem.
The following components of an investigation are typically present: data, apparatus, and procedure.
Claims, beliefs, or behaviors that are presented as scientific but do not have a foundation in empirical data or adhere to the scientific method are referred to as pseudoscience. Science that is conducted legitimately does not include pseudoscience.
Thus, the correct option is A.
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hemophilia is caused by sex linked recessive allele. Diane's brother has hemophilia there's no history of hemophilia and her husband Craigs family is it possible for Diane and Craig to have a child with hemophilia
PLS HELP
It not possible for Diane and Craig to have a child with hemophilia even though the gene is recessive in the wife
Can genes be recessive?A recessive gene is a gene that will only express its characteristic (phenotype) when two copies of the gene are present, one from each parent. If an individual has only one copy of the gene (they are heterozygous), the dominant gene will be expressed instead.
In general, dominant genes mask the expression of recessive genes, so the phenotype of an individual is determined by the dominant gene. However, in certain cases (such as homozygosity for a recessive gene), the recessive gene can be expressed.
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The following questions refer to the diagram below. Fill in the blanks and answer the
questions below.
reactants
Progress of the reaction
1. Is this reaction endergonic or exergonic?
2. Which has more free energy, reactants or products?
3. Which letter refers to the change in free energy of the reaction?
The given reaction is an exergonic reaction. In an exergonic reaction, the reactant's free energy is more than the products.
Why is the the reactant's free energy more than the products?This is because an exergonic reaction releases energy as the reactants are converted to products. The released energy comes from the potential energy stored in the chemical bonds of the reactants. As a result, the products have less free energy than the reactants, since some of the potential energy has been released as usable energy (such as heat or work) during the reaction. The difference in free energy between the reactants and products is k.
The letter W refers to the change in free energy of the reaction.
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Question 10 of 10
In which two processes do cells make a small amount of ATP for every
glucose molecule split in two?
A. Glycolysis
B. Fermentation
C. The electron transport chain
D. The Krebs cycle
SUBMI
Glycolysis and Kreb's cycle are two processes in which cells make a small amount of ATP for every glucose molecule split in two.
Describe glycolysis.
The process by which glucose is broken down to provide energy is known as glycolysis. It generates two pyruvate molecules, ATP, NADH, and water. There is no need for oxygen throughout the process, which occurs in the cytoplasm of a cell.
An overall net of two ATP molecules will be created during fermentation and glycolysis. To prevent glycolysis from ceasing, fermentation will produce 2 ATP, and glycolysis will produce 2 ATP through substrate level phosphorylation. There is no electron transport system involved in fermentation, and no ATP is produced during the fermentation process itself. Two ATP, six NADH +H+, and two FADH2 were created during the Krebs cycle. Due to the two pyruvic acid molecules that enter the system for every glucose molecule, two ATP molecules are produced.
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How are structure and function related in living things?
Answer:
Structure and function are closely related in living things, as the structure of an organism determines its ability to perform specific functions necessary for survival and reproduction. For example, the structure of a bird's wing determines its ability to fly, while the structure of a plant's root system allows it to absorb water and nutrients from the soil. Similarly, the structure of a cell's membrane determines its ability to regulate the exchange of materials between the cell and its environment, and the structure of a muscle's fibers enables it to contract and relax. Therefore, structure and function are interdependent in living things and both are crucial for maintaining the overall health and survival of the organism.
Explanation:
