Which molecule, xanthophyll or beta-carotene, is more polar?.
Answers
Both xanthophyll and beta-carotene are polar molecules. Polar molecules contain polar covalent bonds where electrons are not shared equally and they have an uneven distribution of charge on the atoms.
This results in partial charges across the molecule and gives rise to a positive and a negative end.Beta-carotene is more nonpolar than xanthophyll, which makes xanthophyll the more polar molecule. The reason behind this is because it has more polar groups present in its structure.Beta-carotene has 11 double bonds, and all of these bonds are conjugated. Conjugated bonds have delocalized electrons, which increase the distance between the atoms and decrease the overall polarity of the molecule.
The extended conjugation in beta-carotene creates a long, nonpolar tail, which reduces the polarity.Xanthophylls contain oxygen, which gives the molecule a polar nature. The oxygen atoms create a negative region on the molecule, and the hydrocarbon tail creates a nonpolar region, which results in an amphipathic molecule. Due to this, xanthophyll is the more polar molecule when compared to beta-carotene.
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Related Questions
1. Which of the following would be expected to be true of parallel universes? Choose all that apply. *
They would be located close to one another.
They would be made up of the same number of elements.
They would all contain exact duplicates of people you know.
They would have the same laws of physics.
Answers
The property which would be expected to be true of a parallel universe would be that: They would have the same laws of physics.
Discussion:
A parallel universe by definition is; a separate universe or world that coexists with our known universe but is very different from it. a realm of existence and experience that is fundamentally different from the one that most humans share; a separate reality ultimately.
PS: Plato reflected deeply on the parallel realities, resulting in Platonism, in which the upper reality is perfect while the lower earthly reality is an imperfect shadow of the heavenly.
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The genome of escherichia coli consists of 4380 genes, encoding 4290 proteins, in just 5175720 base pairs. what percent fraction of the escherichia coli genes encode proteins?
Answers
According to the above formula, the percentage of genes that code for proteins is 97.95%.
Briefing:4380 genes are found in total.
4290 total proteins are encoded by the genes.
There are 5175720 base pairs overall.
Percentage of genes that code for proteins: Although there are 4380 genes overall, only 4290 of them code for proteins.
Total number of protein-coding genes divided by the total number of genes present gives the fraction of protein-coding genes (4290/4380), which equals 0.9795.
Percent fraction of genes encoding proteins
= Fraction of genes encoding proteins * 100
= 0.9795*100
The percentage of genes that code for proteins is 97.95%.
Where are the genes in DNA?Deoxyribonucleic acid (DNA) segments called genes are responsible for carrying out specified protein functions in one or more types of bodily cells. The structures called chromosomes found in cells house a person's genes. Chromosomes, which are found in the cell nucleus, are where genes are found.
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Examine the images here for two tree species. What best defines the taxonomy used to group these species?
Question 6 options:
These trees were grouped and named based on similar metabolic processes.
These trees were grouped and named based on shared evolutionary characteristics.
These trees were grouped and named based on overlapping geographic ranges.
These trees were grouped and named based on similar appearance.
Answers
The option of best defines the taxonomy used to group these species is that These trees were grouped and named based on shared evolutionary characteristics.
What is the taxonomy of a pine tree?The taxonomy Pinus is that it belongs to the following:
Kingdom : Plant Phylum : Coniferophyta Class : Pinopsida Order : Pinales Family : Pinaceae Genus : Pinus Species : Palustris P. MillThe Common name: Longleaf pine.Learn more about taxonomy from
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Based on this information, is ebony body color or yellow-brown body color the dominant allele? Explain.
Answers
Based on the information, ebony or yellowish-brown body color exerts a codominance.
What is the dominant allele?Dominant alleles can be defined as those that, even in a single dose, manage to manifest themselves. This means that when a dominant allele is present, the organism may be homzygous or heterozygous, and the phenotype will still be expressed.
With this information, we can conclude that ebony or yellowish-brown body color exerts a codominance.
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I need help with my question
Answers
Answer: Aight bet
Explanation:
If you give me some context abou this question i can possibly help you
Which is the most important product of cellular respiration?
(A) ATP
BADP
C) NADH
D FADH₂
Answers
Answer:
A:
ATP
Explanation:
Science yeah
Why are stem cells undifferentiated
Answers
Stem cell, are undifferentiated cell because they are capable of dividing to produce some offspring cells that continue to be stem cells .
Cell differentiation is the method in which stem cells becoming more Functional. In most of the Adults stem cells are undifferentiated cells found living within specific cell . Cell differentiation is an important process as it creates diversity of life on Earth .
In general Differentiated tissues in our bodies can renew themselves or generate new cells to replace dead tissue. For example , Embryonic stem cells have the capacity to self renew and to differentiate into cellular by-product of the endodermal, ectodermal, and mesodermal lineages.
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Which of the following is NOT present in all cells?
ribosomes
mitochondria
cell membrane
Answers
If a hair is found to have a round-shaped cross section, what other characteristic would you expect to see in the overall strand? Straight hair Kinky hair Curly hair Dyed hair
Answers
The round shaped cross section of hairs depicts that the hairs are straight in nature.
Hairs are the proteinaceous structure that grow as an outgrowth outside may parts of the body. The majority of hairs can be seen on the head of a human. The shape of the hair is provided by the cortex. The protein which is present in the hairs is keratin. And the color of the hair is provided by another protein called melanin.
Keratin is the fibrous protein crucial for the formation of body structures like hairs, nails, epidermis, etc. The protein provides great strength and protection to the hairs and skin.
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Answer:
(A) Straight hair
Explanation:
The following photo should help you understand why I'm correct.
12. Se obtienen 500 mL de CO2 en el laboratorio a una temperatura de 18 °C y una presión de 560 mmHg. El volumen que ocupa a condiciones normales será A. 345,6 mL B. 625,2 mL C. 298,4 mL D. 798,5 mL
Answers
Answer:
A. 345,6 mL
Explanation:
Tenemos un gas definido en ciertas condiciones (de presión, temperatura y volumen) y queremos saber el volumen que ocupará en condiciones normales de presión y temperatura, es decir, 1 atm y 0ºC.
Para resolver este problema utilizaremos la ecuación de los gases ideales:
pV=nRT
Ya tenemos todos los datos, y sólo nos resta calcular n, el número de moles. R es la constante de los gases, la cual tiene el valor redondeado de 0.082 L.atm/mol.K, por lo cual es importante convertir las unidades para que éstas se cancelen y den como resultado los moles de gas.
Dividimos 560 en 760 para pasar de mmHg a atm, 500 mL se dividen por 1000mL para pasar a litros, y a la temperatura de 18ºC se le suman 273 para pasarla a Kelvin.
Despejamos n de la ecuación:
n=p.V ÷ R.T
n= 0.740 atm × 0.50 L ÷ 0.082 L.atm/mol.K × 291 K
n= 0.0155 mol
Ahora que tenemos el número de moles del gas, podemos usar la ecuación nuevamente para calcular el volumen que tendrá el gas en condiciones normales (1 atm y 0ºC, o 273 K).
Despejamos V de la ecuación:
V= n.R.T ÷ p
V= 0.0155 mol × 0.082 L.atm/mol.K × 273 K ÷ 1 atm
V= 0.346 L ≈ 346 mL
El volumen que ocupará el mismo gas a condiciones normales será 346 mL, por ende la respuesta correcta es la A. Hay una pequeña discrepancia pero ésta es normal, se debe al redondeo del resultado al final (acá redondeo 345.6 a 346).
are the genes determining the three traits assorting independently of each other? why/why not? use the probability associated with your chi square value to support your answer.
Answers
Answer:
why not
Explanation:
1. Natural Selection is guided by the environment. It also drives the process of
evolution,
True
False
Answers
Answer:
true
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in chapter 29, how was scout able to recognize boo radley even though she had never seen him before?
Answers
Scout was able to recognize Boo Radley because she had seen a carving of him made by his father.
In chapter 29, when Boo Radley comes to rescue Jem and Scout from Bob Ewell's attack, Scout sees him in the dim light and describes him as a "gray ghost." However, she realizes that it is Boo Radley when she notices the familiar shape of his face that she had seen in the carving.
Ans in 100: Scout's ability to recognize Boo Radley based on the carving she had seen earlier in the book is a powerful moment that emphasizes the importance of memory and perception. By relying on her memory and noticing small details, Scout is able to understand the true identity of a character who has remained a mystery to her throughout the novel.
Conclusion: In conclusion, Scout recognized Boo Radley in chapter 29 because she had seen a carving of him earlier in the book. This moment highlights the significance of memory and perception in understanding the characters and events in To Kill a Mockingbird.
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describe mutations, adaptations, differential reproduction, and biological evolution as well as the different types of natural selection, coevolution, and evolution types.(convergent and divergent)
Answers
Mutations can come from errors in DNA replication on cell division, exposure to mutagens or a viral infection.
Evolutionary adaptation, or known as adaptation, is the adjustment of organisms to their environment to develop their chances at survival in the environment.
Differential reproduction means individuals that have favorable characteristics tend to have more competitive advantage and are more possibly to pass their genes to the next generation.
Evolutionary modification of traits happens when variation is introduced into the population by genetic recombination, gene mutation, genetic drift, or is removed by natural selection.
Natural selection is the mechanism of evolution that favors organisms which are better adapted to their environments. Directional selection, stabilizing selection and disruptive selection are the types of natural selection.
Coevolution happens when species evolve together. Coevolution usually occurs in species which have symbiotic relationships. For example, flowering plants and their pollinators.
While convergent evolution consists of unrelated species which develop similar characteristics over time, divergent evolution consists of species with a common ancestor with change to become increasingly different over time.
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which combination of roots refers to the ducts through which bile leaves the liver? question 12 options: choleangio ccholedocho cholecyst hepatochole cholelith
Answers
The combination of roots that refers to the ducts through which bile leaves the liver is "Choledocho." This term combines the roots "chole," which refers to bile, and "docho," which refers to duct. The Correct option is B
The choledocho or common bile duct is the largest duct in the biliary system and carries bile from the liver and gallbladder to the small intestine. The bile duct system is an important part of the digestive system, as it helps to process and eliminate waste from the body.
Disorders of the bile ducts, such as gallstones or cancer, can cause significant health problems and may require medical treatment.
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After a protein is made in the endoplasmic reticulum of an animal cell, it A) attaches to a ribosome on the ER membrane to be encoded and used in DNA replication B) is sent to the Golgi apparatus to be processed, stored, and sent to another destination C) is stored in the large central vacuole until it is needed by the cell for growth and repair D) travels to the mitochondria to be broken down and used for energy to power the cell
Answers
Answer:
B) is sent to the Golgi apparatus to be processed, stored, and sent to another destination
Explanation:
Proteins are important biomolecules produced in the cells of living organisms, specifically the Rough Endoplasmic reticulum (RER) attached to the ribosome (site of protein synthesis).
However, after production by the RER, the protein is sent to an organelle called the Golgi apparatus in order to be processed, stored, and sent to another destination by transport vesicles.
true or false. protein primary structure cannot be used to predict protein secondary structure.
Answers
The statement "protein primary structure cannot be used to predict protein secondary structure" is true because they are different levels of structure.
Primary structure refers to the sequence of amino acids that make up the protein, while secondary structure is the folding of the protein into a specific conformation.
The primary structure of the protein is not enough information to determine the secondary structure, because it is determined by a variety of factors such as intramolecular forces, hydrogen bonding, and hydrophobic interactions.
Additionally, different proteins can have the same primary structure but different secondary structures. In order to accurately predict secondary structure, more information about the protein is needed, such as the three-dimensional structure.
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Earth is not greatly expanding or contracting. Without
changing the dimensions of Earth, how could the plates move in
relation to one another?
Answers
Answer:
The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into one another; divergent, where plates move apart; and transform, where plates move sideways in relation to each other. They move at a rate of one to two inches (three to five centimeters) per year.
In which organism can cell walls be found?
Answers
Answer:
Cell walls are structures that surround and protect the cells of some organisms. According to the web page context, cell walls can be found in:
PlantsFungiBacteriaSome protistsCell walls are not found in animals or most protists.
Explain the characteristics of the three states of matter.
Answers
Answer:
Explanation:
Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed particles. ... Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume.
Answer:
➢ Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed particles. ... Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume.
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Which disruption in the water cycle would most likely affect photosynthesis?
heat causing an excess of transpiration
heat causing an excess of evaporation
heat causing an excess of condensation
heat causing an excess of precipitation
Answers
Answer:
heat causing an excess of transpiration
Explanation:
Heat creating an excessive amount of transpiration is the water cycle disturbance that would most likely have an impact on photosynthesis. Water vapour is emitted from plants during the process of transpiration, which is necessary for photosynthesis.
What is the purpose of transpiration ?Transpiration cools the plant and gives the leaves the water they need for photosynthesis. The plant may get exhausted and unable to carry out photosynthesis if there is excessive transpiration as a result of the heat.
Additionally, excessive transpiration can result in dry, compacted soil, which can lower the amount of water that is available to the plant. Because the plant won't be able to absorb enough water to carry out the process, this could harm photosynthesis.
, Additionally, an excessive amount of transpiration may speed up evaporation, lowering the amount of water available for photosynthesis. The water cycle can become unbalanced if there is too much transpiration because more water is lost via transpiration than is replenished by.
Because the plant won't be able to absorb enough water to carry out the process, the amount of water available for photosynthesis may decrease as a result. Therefore, it is evident that heat-related excess transpiration is the water cycle disruption that will most likely have an impact on photosynthesis.
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Which of the following are factors that make petroleum a limited resource? (Select all that apply)
a) It is a non-renewable resource.
b) It takes millions of years to form.
c) The process of extraction is difficult and expensive.
d) It is found only in certain regions of the world.
Answers
The factors that make petroleum a limited resource are a) It is a non-renewable resource, b) It takes millions of years to form, and d) It is found only in certain regions of the world.
a) Petroleum is a non-renewable resource because it cannot be replaced or regenerated in a short period. Once it is consumed, it is gone forever.
b) The formation of petroleum takes millions of years. It is created from the remains of ancient marine plants and animals that were buried under layers of sediment and subjected to heat and pressure over time.
d) Petroleum is found only in certain regions of the world, making it geographically limited. These regions, such as the Middle East, have vast reserves of petroleum, while other areas have little or none.
Factors like petroleum being a non-renewable resource, its formation taking millions of years, and its geographical limitations contribute to its status as a limited resource.
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during prophase i of meiosis,
Answers
Prophase I marks the start of the first meiotic division, meiosis I. Chromatin, a protein and DNA complex, condenses to create chromosomes during prophase I.
What major event takes place during meiosis' prophase I?The chromosomes condense during prophase I and become apparent inside the nucleus. Every chromosome now has two sister chromatids connected at the centromere since every other chromosome was duplicated during the S phase, which occurred right before prophase I. Each chromosome has the shape of an X thanks to this arrangement.
Which sequence of events should occur during meiosis?Cells go through four phases throughout each round of division: prophase, metaphase, anaphase, and telophase.
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Question:-
What happens during prophase 1 of meiosis?
WILL GIVE BRAINLIEST IF CORRECT AND 66 POINTS
A small creek runs through a mature forest, keeping the soil around the creek damp all year. A variety of ferns and several flowering plants thrive in this shady, moist area. Along the higher ground above the creek, many species of flowering plants that need less water grow. If a farmer diverted the creek to water his fields, causing the creek to dry up, what would be the most likely long-term consequence for the ferns and angiosperms in the forest?
The ferns would outcompete the angiosperms in the forest since they can tolerate a wider range of moisture conditions than angiosperms.
The angiosperms and the ferns would not be affected since their thick, waxy cuticle coverings would protect them from drying out.
The angiosperms would outcompete the ferns since their sperm do not need moist conditions to get to their eggs as ferns do.
The ferns and angiosperms would begin to produce spores instead of seeds since the spores are better able to survive dry conditions.
Answers
Answer:
The ferns would outcompete the angiosperms in the forest since they can tolerate a wider range of moisture conditions than angiosperms.
Explanation:
Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identifies a difference in the structure of proteins and polysaccharides?
a) Only polysaccharides can be folded and twisted to very specific shapes.
b) Only polysaccharides are comprised of repeating units of cytosine, adenine, guanine, and thymine.
c) Only proteins can be large molecules with thousands of subunits.
d)Only proteins are formed from amino acids joined by peptide bonds.
Answers
Answer:
Only proteins are formed from amino acids joined by peptide bonds.
Answer:
D. Proteins only formed from amino acids with the help of peptide bond.
Explanation:
Polysaccharide are made up of long chain of monosaccharide (these are known as simple sugar like glucose). Polysaccharide are carbohydrates such as starch, glycogen and cellulose. Polysaccharide consist of oxygen, hydrogen and carbon molecules with the ratio of 1:2:1.
Proteins, there are 20 different types of amino acids are found in protein and playing important fundamental role in to determine the structure and function of the protein. Proteins are major structural element of the cell, they are working as a transporter helping in movement of the molecule inside and outside the cell. Proteins consist molecules of carbon, nitrogen, oxygen and hydrogen and these molecules are not present in a partial ratio.
Which of the following does NOT secrete hormones?
A. Ovaries
B. Skin
C. Adrenals
D. Pancreas
Answers
Answer:
skin acts as a protective barrier, therefore it does not secrete hormones
Skin does not secrete hormones. Thus, the correct option is B.
What are Hormones?Hormones may be defined as chemical substances that are produced by the organ system of an organism and transported at the site of action via the bloodstream. Hormones act as messenger molecules in the body.
Skin acts as the primary or first line of defense for the immune system. It does not secrete any hormones. It plays an important role in innate immunity. Ovaries are responsible for the secretion of hormones like estrogen and progesterone in females and regulate all the prospective consequences in the body of females.
The adrenal gland secretes hormones like cortisol and aldosterone which are steroid hormones. Such hormones are important in regulating metabolism, inflammation, immune functions, etc. The Pancreas secretes insulin and glucagon which play an active role in regulating the level of glucose in the blood.
Therefore, the skin does not secrete hormones. Thus, the correct option is B.
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How many letters in a codon?
Select one:
O 5
o 6
O 3
o 4
Answers
if a tissue had triploid cells, how many copies of each gene would it possess?
Answers
The presence of triploid cells in a tissue denotes that there are three sets of chromosomes present in each cell, as opposed to the typical two sets. A mistake in chromosomal replication or segregation during cell division causes this disease.
There would be three copies of each gene in triploid cells. Each gene would have three copies instead of the typical two copies present in diploid cells since genes are situated on chromosomes, and since triploidy entails an additional pair of chromosomes.
The presence of an additional pair of chromosomes throws off the usual balance of gene expression and cellular processes, which is why triploidy can cause a variety of genetic and developmental problems.
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What is the term for the site where the muscle attaches that does not move when the muscle contracts?.
Answers
The origin is the term for the site where the muscle attaches that does not move when the muscle contracts.
It's simple to believe that muscle is muscle, and that the tissues in hearts, tongues, and arms are essentially the same. Mammalian bodies, however, are composed of three distinct muscle types: cardiac, skeletal, and smooth. Organs including our skin, blood arteries, and digestive tracts are made up of smooth muscles. The heart's muscles are called cardiac muscles. Despite how amazing and sophisticated these tissues are, the skeletal muscles are what carry out the bulk of the work.
The muscles that are a part of the skeletal system are known as skeletal muscles. They are voluntary muscles, as opposed to the hearts and stomachs, and one has cognitive control over them.
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Which best describes the fossil record
Answers
The statement that best describes fossil record is that fossil record provides evidence of a common ancestor to many species.
What is fossil record?A Fossil record can be defined as a geological record that shows the preserved remains of organisms that existed in the past which are under or within rocks for many years.
The importance of fossil record is that they provide evidence for evolution and the adaptation of plants and animals to their environments.
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