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
the predigree to thr right shows the passing on of straught thumbs (recessive) and Hitchhikers thump (doninant) in a family. Shaded shapes mean the person has a straight thumb
The pedigree to the right shows how two different traits, the straight thumb (recessive) and the Hitchhiker's Thumb (dominant), are passed on within a family. The shaded shapes represent individuals who have a straight thumb.
What is shaded shape?Shaded shape is an image that has been partially filled in with a color, pattern, or texture. This method of creating an image is commonly used in artwork, drawings, and other visuals to create a sense of depth and perspective. Shading can also be used to create a variety of effects and textures, allowing for a greater level of detail and realism.
Starting at the top left, the first individual has a Hitchhiker's Thumb. His partner, the second individual, also has a Hitchhiker's Thumb. Their child, the third individual, has a Hitchhiker's Thumb as well.
Moving to the top right, the fourth individual has a Hitchhiker's Thumb. His partner, the fifth individual, has a straight thumb and is shaded. Their child, the sixth individual, has a straight thumb and is shaded.
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Which Fisheries are used as a major source of protein?
Plain
Coastal
Hilly
Desert
Answer:
The Correct answer is A that is Plain Fisheries
Explanation:
Plain Fisheries for ex- Carp and Tilapia are used as a major source of protein because These Fish contain all the essential amino acids which makes them a high-quality source of protein.
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Question 1:
Climate change is leading to greater environmental instability in many regions of the
globe. Which of the following would likely happen to sea anemones and their
reproductive strategies?
Group of answer choices:
They would reproduce sexually more often.
They would produce physically larger offspring.
They would produce offspring more frequently.
They would produce smaller numbers of offspring.
Question 2:
In an unstable environment, sea anemones will most likely produce ___________.
Group of answer choices:
offspring primarily through budding
offspring primarily through binary fission
asexually only
planulae through sexual reproduction
Question 3:
In paragraph 2, the word “sessile” means ___________.
Group of answer choices
having both male and female organs in a single organism
reproducing by budding off new individuals
remaining attached to the bottom like a coral reef
being moved by wind and currents from place to place
Question 4:
Which of the following is a characteristic of asexual reproduction?
Group of answer choices:
It produces small numbers of offspring.
It is most common in humans
It involves male and female gametes.
It produces genetically identical offspring.
Question 5:
Scientists can determine whether a colony of sea anemones was produced sexually
or asexually by ___________.
Group of answer choices:
counting the number of individual polyps
looking at environmental stability over time
examining the genetic diversity between polyps
examining the diet of each polyp
Which statement explains the impact of favorable oceanic conditions on the biosphere?
Hurricanes change the shape of the coastline.
Intertidal areas support many types of life.
Ocean waves add more sand to the beaches.
Pollution moves onshore from oceans.
The diversity of species seen in intertidal zones helps to illustrate how the biosphere is impacted by favorable oceanic conditions.
The areas between the highest point of the high tide and the lowest point of the low tide are known as the intertidal zones. There is a lot of nourishment in these areas due to the constant shift brought on by the advancing or receding of water, and they also offer favourable living conditions for a variety of creatures, particularly tiny and mid-sized ones.
The effect on the biosphere as a whole is highly favourable. The number of distinct organisms and the number of species that are represented in a very short space are both highly high. As a result, the environment becomes incredibly vibrant and prosperous.
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Answer:
B. Intertidal areas support many types of life.
Explanation:
The answer is actually B!!! Please note that you have to make sure that YOUR question says BIOSPHERE and NOT GEOSPHERE etc.
I also got it right on the quiz, check the pic for proof
A student runs an experiment to figure out if the size of a wire changes how well i
the resistance in the wires.
s electricity. She uses 5 different widths of copper wire and attaches each to a multimeter to measure the resistance in the wires. The data collected is shown below:
Wire 1- 12 Ohms
Wire 2- 17 Ohms
Wire 3- 9 Ohms
Wire 4- 14 Ohms
Wire 5- 6 Ohms
What is the independent variable in this experiment?
A The multimetet.
B. The resistance values.
C. The material of the wires, copper.
D. The widths of the wires.
The widths of the wires was the independent variable in the experiment.
define resistance ?Resistance is a measure of the degree to which an object opposes the flow of electric current through it. It is the ratio of the voltage applied to a conductor or circuit to the resulting current that flows through it, and is typically measured in units of ohms (Ω). The higher the resistance of a material, the more difficult it is for electric current to flow through it. Factors that can affect resistance include the material of the conductor, its temperature, and its dimensions.
Resistance is an important concept in understanding and designing electrical circuits, as it can impact the overall performance and efficiency of a system. The widths of the wires was the independent variable in the experiment.
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5. Fill in Box 5.16, listing three tissue types that either secrete, absorb, or store things for the human body, and explain what these tissues do.
Box 5.16 Tissue Types That Secrete, Absorb, or Store
Tissue
What Does It Secrete, Absorb, or Store?
Most of the secretory and absorptive tissues are epithelial tissues, while those that act as storage units are connective tissues and simple cuboidal epithelium and simple columnar epithelium are useful in the absorption and secretion of molecules during active transport.
What are Absorptive tissues?Most of the absorptive tissues contain epithelial cells that protect the human body from dangerous components in ingested foods where epithelial cells are important gateways to the human body.
Simple columnar epithelia are epithelia specialized for absorption that often have apical cilia or microvilli where these cells line the stomach and intestines.
Thus, most of the secretory and absorptive tissues are epithelial tissues.
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Explain the 4 types of human blood type. What is present in each
Answer:
Explanation:There are 4 main blood groups defined by the ABO system:
blood group A – has A antigens on the red blood cells with anti-B antibodies in the plasma
blood group B – has B antigens with anti-A antibodies in the plasma
blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma
blood group AB – has both A and B antigens, but no antibodies
What is the cell membrane, what is its function and structure, and how does it work?
Answer:
The cell membrane, also known as the plasma membrane, is a thin, semipermeable membrane that surrounds the cytoplasm of a cell and separates it from the external environment. Its main function is to control the movement of substances into and out of the cell, as well as to maintain the cell's internal environment. The cell membrane is composed of a phospholipid bilayer, with proteins and carbohydrates embedded in it.
The cell membrane works by having molecules move from an area of higher concentration to an area of lower concentration. This movement is caused by the molecules having kinetic energy, which causes them to move around randomly. As they move, the molecules spread out, causing the concentration of the molecules to decrease in the area they are moving away from and to increase in the area they are moving towards. The cell membrane is semipermeable, meaning that it allows certain molecules to pass through it, while blocking other molecules. The molecules that are allowed to pass through the cell membrane must be small enough, and have the right type of charge, in order for them to fit through the phospholipid bilayer.
Answer:
What is Cell membrane : A thin membrane that surrounds the protoplasm of every cell.
Function : It provides rigidity and protection to the cell against variations in the environment. It also gives a definite shape, size and support to the cell.
Structure: It is an outer covering of the other cells organelles of the cell.
Hope it Helps :)
please help me with this problem
Answer: 5
Explanation:
edge23
The 5' end of mRNA serves as a binding site for __________, which allow translation to begin.
a.The promotor proteins
b.The ‘A’ site of the large ribosomal subunit
c.tRNA
d.Initiation factors
Each mRNA molecule being translated often undergoes numerous initiations. The 5′ end of the mRNA is threaded into a new ribosome as soon as the previous ribosome has translated enough of the nucleotide sequence to move out of the way. Hence, it allows the translation to begin.
A ribosome outside the nucleus decodes messenger RNA (mRNA) during translation to produce a specific polypeptide or amino acid chain. The polypeptide performs its unique functions inside the cell after folding into a functional protein. The ribosome facilitates decoding by promoting the binding of complementary tRNA anticodon sequences to mRNA codons. The tRNAs transport certain amino acids that are linked together to form a polypeptide as the mRNA passes through and is "read" by the ribosome.
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A mother has type A blood but is a carrier for O. A father has AB blood . Show genotypic and phenotypic percentages of the generation
A mother has type A blood but is a carrier for O. A father has AB blood.
The genotypic and phenotypic percentages of the generation is
Type A
Type B
What is the function of multiple alleles?Blood type in humans is controlled by a gene with multiple alleles. Alleles iA and iB are dominant over allele i but are codominant. This means that the following genotypes will give rise to the phenotypes as follows:
iAiA or iAi - type A
iBiB or iBi - type B
iAiB - type AB
ii - type O
According to this question, if a mother with Type O (ii) blood and a father with type AB (iAiB) blood are crossed, the following offsprings will be likely produced:
iAi, iAi, iBi, iBi
iAi - type A
iBi - type B
Hence, the possible phenotypes of the children will be type A and type B blood.
Therefore, A mother has type A blood but is a carrier for O. A father has AB blood.
The genotypic and phenotypic percentages of the generation is
Type A
Type B
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In a chemical reaction, bonds in reactant molecules are broken and new bonds
are formed to yield products.
How does an enzyme make this happen at an optimal rate in a cell?
A. It lowers the amount of energy needed to break the bonds in the products.
B. It increases the amount of energy needed to break the bonds in the
substrate.
C. It increases the amount of energy needed to break the bonds in the
products.
D. It lowers the amount of energy needed to break the bonds in the
substrate.
Answer:
D. It lowers the amount of energy needed to break the bonds in the substrate.
Explanation:
Enzymes play a crucial role in catalyzing chemical reactions in cells. They do so by lowering the activation energy required for a reaction to occur. An enzyme works by binding to a specific substrate, or reactant molecule, and creating an environment around it that makes it easier for the substrate's bonds to break and for new bonds to form. This allows the reaction to proceed at a much faster rate than it would without the enzyme.
In this context, the correct answer is (D) It lowers the amount of energy needed to break the bonds in the substrate. This is because the enzyme acts to lower the activation energy required for the substrate's bonds to break, allowing the reaction to occur more easily and at a faster rate. By reducing the energy needed to initiate the reaction, the enzyme makes it more likely that the reaction will occur, and thus the rate at which products are formed is optimized.
Steve has 2 baskets of apples. Basket A weighs 3 pounds 32 ounces. Basket B weights 96 ounces. Which-basket weighs more?
Answer:
mhhhhhhhhhhhhhhhhhhhhhh
Explanation:
,,,,,hjgggggggggggggv
In the image below, in which location is carbon released into the atmosphere?
A
B
C
D
Answer: (d) the carbon released into the atmosphere at location D.
All of the following uses that changed the land EXCEPT
O development
O agriculture
O conservation
O mining
Extensification of land usage necessitates the growth of industries that are extremely harmful, such agriculture, fish farming, and feedlots.
How does agriculture work?To nurture the soil, develop crops, & care for livestock is the science and technique of agribusiness. The processing of plant and animal products for human use as well as their marketing are included. Food and textiles are largely produced via agriculture.
Agriculture's significance: why?Simple definitions include "the science or occupation of cultivating land and raising crops and livestock" and "the occupation of cultivating land" can be found at dictionary.com. However, there are a wide variety of landscape ecologies and climates that fall within this criteria, each of which can support a different kind of plant or animal species.
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What is an element? Is water (H2O) considered an element?
Answer: a element is a part or aspect of something abstract , especially one that is essential or characteristic YES water is an element
Explanation:
Answer: yes it is..
Explanation:
he following diagram shows the branching tree diagram for some animals.
A slanting line is shown. There are five lines drawn vertically on this line at equal intervals. Shark, Frog, Kangaroo, Lion and Chimpanzee are written on top of each vertical line in order from left to right. Common Ancestor is written on the left end of the line. There is a black circle between each pair of these vertical lines. The first black circle is before Shark and says Vertebrae. The second black circle is between Shark and Frog and says Lungs. The third black circle is between Frog and Kangaroo and says Mammary gland. The fourth black circle is between Kangaroo and Lion and says Placenta. The fifth black circle is between Lion and Chimpanzee and says Large brain.
Which two organisms share the greatest number of derived characteristics?
Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee
The two organisms that share the least number of derived characteristics are Kangaroo and chimpanzee.
What is an organism?
Taxonomy divides living things into categories like multicellular animals, plants, and fungus, or unicellular microbes like protists, bacteria, and archaea.All kinds of creatures are capable of responding to stimuli in some capacity and reproducing, growing, and developing. Multicellular organisms that distinguish specialised tissues and organs throughout development include squids, tetrapods, vascular plants, beetles, and mushrooms.Prokaryotes and eukaryotes are both types of unicellular organisms. The two distinct domains of bacteria and archaea are prokaryotes.To know more about organisms, click the link given below:
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In an ecosystem, there are two color varieties within a species of toads: brown and green. Over 50 years, the proportion of the
population that is green increases from 20% to 50%. Which statement is the most likely to explain this change? (1 point)
O Pollution caused a decrease in the proportion of brown toads.
O The environment changed such that toads that can jump higher into the trees to survive better.
O The environment changed such that green toads can blend into their surroundings better.
O A disease caused a decrease in the proportion of brown toads.
Answer:
Explanation:
The most likely explanation for the increase in the proportion of green toads in the population is that (c) the environment changed such that green toads can blend into their surroundings better. This increased their chances of survival and reproductive success, leading to a higher proportion of green toads in the population over time.
1. Form a Hypothesis Would this therapy work if mRNA were replaced with other types of
RNA, such as ribosomal RNA (rRNA) or transfer RNA (tRNA)? Use evidence to support
your hypothesis.
NOTEBOOK
2. Evaluate a Solution What are the advantages of using mRNA, rather than DNA, for
directing the synthesis of the drug? (HINT: Remember the role of regulating gene
expression in the cell.)
NOTEBOOK
3. Develop Models Review the steps of administering an mRNA drug. Add illustrations to
the figure to model the processes that are occuring inside the cell with the mRNA drug.
Either draw the illustrations by hand or copy diagrams from the chapter.
NOTEBOOK
4. Use Models Use your model to compare the administration of an mRNA drug to the
protein synthesis that the cell normally performs.
NOTEBOOK
5. Conduct Research Use an online search engine to research more information about
mRNA drugs, their uses, and their development. Be sure to take notes and to cite your sources.
The text: What happens when you take a conventional drug, such as aspirin or penicillin? The drug
travels through the blood stream, and then is absorbed by body cells or (as with penicillin)
by the cells of bacteria or other invaders. The drug does its work, but eventually it goes
away. Enzymes and other mechanisms break apart drugs and remove them from the body.
Today, researchers are trying to develop drugs in a very different way. The new drugs are a
modified form of messenger RNA (mRNA). Instead of directly completing the tasks of the
drug, the modified mRNA enters the cell and directs protein synthesis. Then the protein
takes action as a drug or medicine. The protein might be a vaccine or antibody, or it might
be an enzyme that the body cannot make or that it needs in an increased supply.
To develop mRNA drugs, researchers had to find a way to make the molecules last longer
in the body than they generally do. They also needed to "trick" the target cell into
recognizing and accepting the drug. Otherwise, the cell might attack the drug as if it were
a virus.
Researchers met both challenges with the same solution. The drug is not quite the same as
the natural mRNA found in cells. Instead, it uses a few nucleotides that are slightly
different from the normal nucleotides found in RNA. The modifications make the mRNA
both more stable and less virus like.
Answer:
The text describes the development of mRNA drugs and how they differ from conventional drugs. mRNA drugs work by directing protein synthesis inside the cells, and the protein produced by the cell acts as the drug. To develop mRNA drugs, researchers had to find a way to make the molecules last longer in the body and to avoid the cell recognizing the drug as a virus. The solution was to modify the mRNA so that it is different from the natural mRNA found in cells, making it more stable and less virus-like. The text does not directly address the hypothesis about whether mRNA can be replaced with other types of RNA for the therapy to work. However, it does suggest that the modifications to the mRNA are key to the drug's effectiveness and stability.
impacts of invasive species impacts the carbon cycle? and how?
Answer:
Explanation:
Invasive plants tend to deplete soil health in grasslands by reducing biodiversity and eliminating native species. The shift towards an invasive plant monoculture is accomplished through a variety of strategies including competition for soil moisture, changing soil chemistry, shading and space.
it releases more carbon dioxide into the atmosphere than native plants, according to new research in Science.
Where is the chromatin during interphase
Helppppp it’s due today
Stablizing selection is represented in graph A, and distructive selection is represented in graph B. Thus, option B is correct.
What will be the equation?
Given inequality is,
x + 2y ≤ 47
This inequality has a sign of less than equal to ( ≤ ). Properties of this inequality when graphed will be sign of equal to in the given inequality shows that the graph of the line will be a solid line.
Sign of less than represents the shaded region below the line.The graph lying in first quadrant and graph of horizontal line lying in the fourth quadrant are representing functions.
Thus, Stablizing selection is represented in graph A, and distructive selection is represented in graph B. Thus, option B is correct.
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According to the image below, which season is about to begin in the southern hemisphere?
Summer
Autumn
Winter
Spring
(I tried summer and it was wrong)
Answer:
Explanation:
The answer is spring. In the Northern hemisphere, it is fall. In the west hemisphere, it's summer. In the east hemisphere, it's winter.
Layers of the Atmosphere Activity
Discussion Questions:
Study the graph you have formed. What do you notice about the air temperature
as the height of the atmosphere increases?
On the basis of the graph, the air temperature decreases as the height of the atmosphere increases except in the stratosphere and thermosphere.
What is the relation between air temperature and altitude?Normally the temperature of the air decreases with increasing altitude but in layers of the stratosphere and thermosphere air temperature increases as the height increases in these layers.
The temperature decreases due to an increase in air pressure. pressure and temperature are inversely proportional to each other.
Thus, this is the relation between air temperature and altitude.
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Your question is incomplete, most probably the full question is this:
Layers of the Atmosphere Activity
Discussion Questions:
Study the graph you have formed. What do you notice about the air temperature as the height of the atmosphere increases?
The image is attached below:
In snapdragons plants , the alleles for red and white flowers show incomplete dominance and results in a pink flower . Cross a pink snapdragon with a pink snapdragon . Show genotypic and phenotypic percentages of the generation
Answer:
In snapdragons, the gene for flower color has two alleles, R (red) and W (white). If a plant has the genotype RR, it will have red flowers, if it has the genotype WW, it will have white flowers, and if it has the genotype RW, it will have pink flowers because of incomplete dominance.
When two pink snapdragons (RW x RW) are crossed, their offspring will have the following genotypic and phenotypic ratios:
Genotypic ratios:
RR: 25%
RW: 50%
WW: 25%
Phenotypic ratios:
Red flowers: 25%
Pink flowers: 50%
White flowers: 25%
In this case, half of the offspring will have the same genotype (RW) and phenotype (pink) as the parents, while the other half will have different genotypes (RR and WW) and phenotypes (red and white).
What is a solution's absorbance, if its molarity is 0.25M?
The molar absorbtivity constant at 560 nm for this substance is 0.3 M⁻¹cm⁻¹.
The absorbance of the solution is 0.45, the concentration would be 1.5 M.
What is the molar absorbtivity constant?The molar absorbtivity constant is a measure of the ability of a substance to absorb light at a specific wavelength. It is related to the absorbance of a solution by the Beer-Lambert law:
A = ε * b * c
where;
A is the absorbance,ε is the molar absorbtivity constant,b is the path length of the cuvette (in this case, 1 cm), andc is the concentration of the solution.Rearranging the equation to solve for ε:
ε = A / (b * c)
Substituting the values from the question, we have:
ε = 0.075 / (1 cm * 0.25 M)
ε = 0.3 M⁻¹cm⁻¹
(b) To find the concentration if the absorbance is 0.45, we can use the Beer-Lambert law:
A = ε * b * c
Rearranging the equation to solve for c:
c = A / (ε * b)
Plugging in the values from the question and using the value of ε found in (a), we have:
c = 0.45 / (0.3 * 1)
c = 1.5 M
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Complete questions:
A 0.25 M solution is in a tube of path length of 1 cm, has an absorbance = 0.075 at 560 nm.(20)
(a) What is the molar absorbtivity constant (b) What is the concentration if absorbance is 0.45
Rock fragments that are tumbled and carried over long distances by this stream are most likely becoming
What function do proteins not play in the plasma membrane of animal cells?
Cell division
Attach cells together
Transport
Receptors
Answer:
Proteins in the plasma membrane of animal cells do not play a direct role in cell division. They do play roles in attaching cells together, transporting molecules in and out of the cell, and acting as receptors for signaling molecules.
A mother has AB blood . A father has O blood . Show genotypic and phenotypic percentages of the generation .
When a mother with AB blood and a father with O blood have a child, the child's blood type will depend on the genetic information they inherit from their parents. Blood type is determined by the presence or absence of specific antigens (proteins) on the surface of red blood cells.
The mother has AB blood, which means that she has both A and B antigens on her red blood cells. The father has O blood, which means that he has neither A nor B antigens on his red blood cells.
The genotypes (genetic information) of the mother and father can be represented as follows:
Mother: IAIA or IAi (AB blood)
Father: ii (O blood)
The I gene determines the presence of the A or B antigens on the red blood cells. The A allele codes for the A antigen, while the B allele codes for the B antigen. The i allele codes for the absence of both antigens. The capital letters denote the dominant alleles (A and B) and the lowercase letters denote the recessive alleles (i).
When a child inherits one I allele from the mother and one i allele from the father, they will have A or B blood, depending on which I allele they inherit. When a child inherits two i alleles from both parents, they will have O blood.
Here is the calculation of the genotypic and phenotypic percentages of the possible offspring:
Genotype Phenotype Percentage
IAIA AB 50%
IAi AB 50%
ii O 50%
So, the offspring of a mother with AB blood and a father with O blood have a 50% chance of having AB blood, a 50% chance of having A or B blood, and a 50% chance of having O blood. The phenotype (observed blood type) of the offspring will depend on the combination of alleles they inherit from their parents.
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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