Formamide molecules are added to an electrophoresis buffer for the purpose of denaturing DNA.
What is the purpose of the buffer during electrophoresis?A laboratory procedure called electrophoresis is used to divide DNA, RNA, or protein molecules according to their size and electrical charge. The molecules are moved by an electric current through a gel or other matrix. In the case of Denaturing Gradient Gel Electrophoresis (DGGE), the gradient can be an electrical field or a denaturant such as a solution of urea and formamide.
Size, charge, and other characteristics are used in electrophoresis to separate macromolecules like protein and nucleic acids. Scientists utilize buffer to transport the charge through the gel for electrophoresis that separates by charge. Additionally, the buffer keeps the gel's pH steady, reducing alterations that would take place in the protein or nucleic acid if the pH were to become unstable.
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Which disorder is a less severe but chronic form of depression?
Major depressive disorder
Bipolar disorder
Persistent depressive disorder
Post-traumatic stress disorder
Answer:
Persistent depressive disorder.
Persistent depressive disorder, known as dysthymia or low-grade depression, is less severe than major depression but more chronic. It occurs twice as often in women as in men. Persistent depressive disorder (PDD) is a serious and disabling disorder that shares many symptoms with other forms of clinical depression.
IUPAC name of 2,2,3-trimethyl butane
Answer:
Triptane molecular formula C7H16Why are white-eyed female fruit flies so rare in nature?
A. White-eyed females are not rare.
B. The allele for white eyes was nearly removed from the gene pool.
C. Females must inherit two copies of the recessive allele.
White-eyed female fruit flies so rarely in nature because females must inherit two copies of the recessive allele. Therefore, option C is correct.
Why are white-eyed female fruit flies so rare in nature?The gene for eye color in fruit flies is located on the X chromosome, and there are two possible alleles: one for red eyes (dominant) and one for white eyes (recessive).
Male fruit flies have only one X chromosome, so if they inherit the white-eyed allele, they will have white eyes. However, females have two X chromosomes, so they must inherit two copies of the white-eyed allele to have white eyes.
Because the white-eyed allele is recessive, it is much less common than the red-eyed allele in the gene pool. In nature, white-eyed female fruit flies are rare because they must inherit two copies of the recessive allele from both parents. Thus, option C is correct.
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Help with somebody who is an expert in meteorology or took any class in it
I would say this isn't a question but more a lack of experience in a field of science or a subject.
So I will help by giving a brief explanation on what it is.
The study of the Earth's atmosphere and the changes in temperature and moisture distribution that give rise to various weather situations is known as meteorology. Precipitation (rain and snow), thunderstorms, tornadoes, hurricanes, and typhoons are a few of the important topics of research.
Thank you,
Eddie
Drag each tile to the correct location.
Sort the statements based on whether they describe the lives of small stars, large stars, or both.
The correct location of each tile is as follows:
Small stars - It becomes a white dwarf when fusion endsSmall stars - It can fuse hydrogen for billions or trillions of yearsLarge stars - It may turn into a black hole at the end of its lifeLarge stars - It becomes a neutron star after the supernova phaseBoth - It increases in size when core hydrogen is used upWhat are stars?Stars are large celestial bodies which produce heat and light energy as a result of the nuclear reactions occurring within the core of the stars.
Stars are composed mostly of hydrogen and helium gas which undergo nuclear fusion reactions.
Stars have lifespans, and the fate of the star at the end of its lifespan depend on whether they are small or large stars.
The correct description and as such location of each tile is as follows:
Stars that become white dwarves when fusion ends are Small stars.
Stars that can fuse hydrogen for billions or trillions of years are Small stars.
Stars that may turn into a black hole at the end of their lives are Large stars.
Stars that become a neutron star after the supernova phase are Large stars.
Both Large and small stars increase in size when core hydrogen is used up.
In conclusion, stars produce heat and light energy by means of fusion reactions.
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Sunlight is the ultimate source of energy in the ecosystem.
Answer: yup. That, and water or air.
Explanation:
d. Ecological relationships How many chromosomes does an individual human person have? a. 23 b. 46 c. 64 d.82
Answer:
there is 46 chromosome in a human
Answer: there is 46 chromosome in a person
Explanation:
what is the outer wall of a cell
An individual of the genotype “Aa” mates with an individual of the genotype “Aa”. What is the probability that their first two offspring will both be the “aa” genotype? (Type answer as a probability between 0 and 1)
Answer:the probability of their first two offspring being aa is 0.25
Explanation:
Because their are 4 possible genotypes for the offsprings
AA Aa Aa aa
And the probability of aa is 1/4
Answer:
1/4
Explanation:
if you look at the attached image, i made a punnett square to represent the relationship. Only one of the squares is aa genotype out of 4, therefore the probability that their first two offspring will both be the “aa” genotype is 1/4.
For single celled, asexual organisms, cell division is used for ___.
For multicellular organisms, simple cell division is used for___
a.growth and repair; growth, repair, and reproduction
b.reproduction; growth and repair
c.reproduction; growth, repair, and reproduction
d.growth, repair, and reproduction; growth, repair, and reproduction
In the case of asexual, single-celled creatures, cell division is needed for reproduction, while simple cell division is employed for growth and repair in multicellular organisms (option B).
Cell division in unicellular & multicellular organisms-
The mechanism through which a mother cell splits into two or more daughter cells is known as cell division.Cell division aids in the growth, maturation, healing, and production of reproductive cells in multicellular organisms (sperms and eggs). A poorly controlled process called uncontrolled cell division can lead to illnesses, most notably cancer.Binary fission is a method of prokaryote reproduction used by bacteria. Cell division is the sole process that unicellular organisms can use to create new individuals. The result of cell reproduction in both prokaryotic and eukaryotic cells is a couple of new cells which are genetically identical to their parent cell. Daughter cells are distinct entities in unicellular organisms.Therefore the correct answer is an option (B).
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Which of the following is the movement of molecules along a concentration gradient by spontaneous random motion to achieve a uniform distribution?
Diffusion is the movement of molecules along a concentration gradient by spontaneous random motion to achieve a uniform distribution.
What is diffusion?Diffusion is the movement of water vapor from regions of high concentration (high water vapor pressure) toward regions of lower concentration.
Diffusion can also be defined as the random movement of molecules (fluids) along a concentration gradient until even distribution is achieved.
Therefore, diffusion is the movement of molecules along a concentration gradient by spontaneous random motion to achieve a uniform distribution.
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From a trough to a peak, the economy goes through
The economy will then start to shrink as it descends from the peak and enters recession.
What is happening to the economy during the trough phase?The economy's growth rate declined during the depression phase. Up until the demand and supply for products and services, as well as the prices of the factors, reach their lowest point, there is still a further decrease. Eventually, the economy sinks to its lowest point. The economy enters the peak phase when it reaches its highest level of output, which marks the end of growth. After this, a contractionary phase occurs as employment levels and housing starts start to drop.
The time between an economic activity's peak and its subsequent trough, or lowest point, is known as a recession. The economic cycle between its trough and peak is one of expansion.
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Why is cellular reproduction important for homeostasis?
It helps cells make oxygen.
It helps cells make glucose.
It removes waste from cells.
It splits a cell into new cells.
Too much logging in the Oyamel fir forests could lead to the eastern monarch butterfly going extinct because
Answer: They wouldn't have anywhere to live. The fir trees are a home to the butterflies cutting the trees means cutting their homes down.
Explanation:
so yea
Answer: A, the entire population of the species spends winter in oyamel
how does afforest station help to balance environment
Explanation:
The ever and ever increasing demand for wood fuel, gas, timber, building materials, and many other consumer products are exerting more and more pressure on the earth’s natural resources, living organisms, and natural cycles responsible for maintaining a balance on earth.
Natural resources such as the water systems, fertile soil, clean air, vegetation cover, wildlife, indigenous plant species, and natural cycles such as the oxygen and nitrogen cycles, and food chains need trees for their continuity and balance.
Explanation:
afforestation makes the earth a better place by reducing the carbon footprint or carbon dioxide in the atmosphere
Which of the following is NOT a behavior of parental care?
A. Feeding
OB. Courtship displays
C. Protection from predators
D. Incubation of eggs
Parental care is the energy investment in looking after the progeny to ensure reproductive success, at the sacrifice of feeding, mating, and being save. The option is B. Courtship displays.
What is parental care?Parenting is a caring behavior chosen by some species in which parents invest energy in looking after their offspring to ensure their survival and hence, their reproductive success.
K-strategists are the species that perform parenting.
Animals must optimize the invested energy in growing, surviving, reproducing, and leaving fertile offspring. They must ensure the perpetuity of the species. The best way to do it is by reaching sexual maturity, mating, and leaving progeny that also reaches their fertile age. So species choose how to do it and where to invest more energy.
K strategists take care of their offspring and invest too much energy in doing it.
Parents must feed them, an activity that requires most of their energy to produce food or look for it. They must protect their progeny from potential opportunistic predators, so they need to be near the whole time. They need to teach behaviors and habits.And so many other things that require energy investment.
So, when parents take care of their offspring, the energy usually destined for survival and mating activities is now destined for parenting.
Often, parents can not feed because they can not leave their offspring alone. They face predators putting themselves in danger of being hurt. They can not mate even if they are in the reproductive season.
According to this framework, the correct option is Courtship displays. Option B. This is a typical pre-mating behavior in which sexual selection plays a significan role.
The behaviors of parental care are
A. Feeding
C. Protection from predators
D. Incubation of eggs
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Animal Diversity Lab Activity:
For this lab activity, you will create a
phylogenetic tree with 20 Sponge Bob
Characters and 35 different “shared
derived characteristics” for members of
the Animal Kingdom. Note if there are
any instances of convergent evolution in
these characteristics.
The lab must follow these keys:
-The tree is not so small and squished that I can’t read the names or see the characters.
-All 20 Sponge Bob characters are included
-All 35 traits/characteristics are used. Any instances of convergence are listed.
-All traits/characteristics are in the correct place and clearly describe the intended character.
Sponge Bob Characters:
• Sponge Bob Square Pants
• Squidward Tentacles
• Patrick Star
• Sandy Cheeks
• Mr. Krabs
• Pearl Krabs
• Gary
• Shark with fake arms
• Sheldon J. Plankton
• Mrs. Puff
• Karen
• Man-Ray
• Larry the Lifeguard
• Mermaid Main & Barnacle Boy
• Jellyfish Fields
• Whelks
• Bullworm
• Nematodes
• Potty the Parrot
• Madam Hagfish
SHARED DERIVED CHARACTERISTICS
• Bilateral Symmetry
• Spiny Skin
• Segmented Worms (Annelids)
• Eutherian
• True Coelom
• Jaws
• Round bodies(Pseudo-coelom)
• Radial Symmetry
• Crustacean
• Land-Dwelling
• Presence of a nucleus
(Eukaryotic)
• Multicellular
• No true tissues (Noneumetazoan)
• Swim Bladder
• Chordate
• Phylum Porifera
• Soft body(Gastropod)
• Osteichthyes
• Protist
• Tetrapod
• Spicules
• Cnidocytes
• Medusa Body Form
• Dinosaur
• Mammal
• Homeothermic
• Amniotic Egg
• Milk & Hair
• The Future of Animal Evolution
• Exoskeleton
• Ecdysis
• Deuterostome (Blastopore
becomes anus)
• Jawless Chordate
• Buoyant Liver
• Chondrichthyan
The phylogenetic tree of organisms within the animal kingdom include characteristics below:
Ancestral protistsTissuesbody symmetryGerm layersBody cavityPoriferaPlatyhelminthesNematodaAnnelidaMolluscaArthropoaEchinodermataChordataWhat is phylogenetic tree?A phylogenetic tree simply refers to a branching diagram or a tree showing the evolutionary relationships among various biological species of both plants and animals based on their similarities and differences; either genetically or physically
Generally, animals; be it vertebrates or invertebrates has the few characteristics below:
All animals are multicellular organismsAnimals are also heterotrophic, meaning; they depend on other organisms for food or they obtain their energy by consuming energy-releasing food substances.Animals typically reproduce sexually.All animals are also made up of cells that do not have cell walls.In conclusion, the phylogenetic tree of organisms within the animal kingdom include all characteristics mentioned above
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Which of the following groups of organisms contains a cell wall?
I. Plantae
II. Animalia
III. Fungi
IV. Eubacteria
Together, the right and left cerebral hemispheres make up which part of the brain?.
Propose five ways in which the government can ensure that the help it offers is received only by the people who are in need?
As the Sustainable Development Goals (SDGs) were being approved in late 2015, my colleagues here at ODI delivered the Projecting Progress scorecard.
What are five ways the government can guarantee that the help it offers is obtained only by the people who are in need?By encouraging the need to create cooperatives throughwhich the country can be funding them.By working with the church to identify the weak in the society so that the required help can go to the right people.By forming commitees that should be glancing at the need in the community Ensure governments and supporters have a formal process to track, review and debate progress towards achieving the ‘leave no behind’ agenda. pretending to be needy.Prioritise policies that target those most at risk, orient financing towards them, and deliver better data
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Carbon is transferred from the
atmosphere to organisms
through...
A. photosynthesis.
B. precipitation.
C. combustion.
Answer:
A
Explanation:
I believe the answer is through photosynthesis
is whistling higher pitch or is singing higher pitch
Answer: Singing , as whistleing does not even involve your larynx
Explanation:
What blood types are possible for a child with a mother who has a blood type of O, and a father with a blood type of A,
and is homozygous.
The mother has an O blood type means genetically she has [tex]I^{O} I^{O}[/tex]and the father is homozygous means he has [tex]I^{A} I^{A}[/tex]in this situation the child will have only A blood group and genetically the child will have [tex]I^{A} I^{O}[/tex]. Thus the answer is blood type A.
What is the genetic constitution of all the blood groups?The blood group type will have two genotypes one homozygous condition that is type [tex]I^{A} I^{A}[/tex] or the heterozygous condition that is [tex]I^{A} I^{O}[/tex] but in both conditions phenotypically the person will have type A blood group.
The same happens with the type B blood group where the homozygous [tex]I^{B} I^{B}[/tex]or the heterozygous [tex]I^{B} I^{O}[/tex] in both genotype conditions phenotypically the person will have a B blood group.
This condition is not applied in the O blood group as it will always express in homozygous condition as if A or B present then will dominate so if a person has blood type O then the person always has [tex]I^{O} I^{O}[/tex] in their genotype.
The condition for having blood group O is the father and mother both should have heterozygous genotype then there will be a possibility the child will have O blood group.
Here, in the question, both parents are homozygous as the mother is expressing blood group O then must have homozygous [tex]I^{O} I^{O}[/tex] and it is already mentioned in the question that the father is also homozygous that is [tex]I^{A} I^{A}[/tex] . The Punnett square is given in the image attached.
Hence, as both parents have homozygous genotype and the father has blood type A which is dominant so children will be heterozygous and have A blood group as A is dominant over O.
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How does evolution occur through natural selection?
A. Individuals die instead of adapting when changes in the environment occur.
B. Individuals different from their population are quickly killed by the rest of the species.
C. Individuals with a low fitness are more likely to survive.
D. Individuals best suited to their environment are more likely to survive and pass on genes.
Evolution occurs through natural selection when individuals best suited to their environment are more likely to survive and pass on genes; option D
What is evolution?Evolution is the process by which new species of organisms are formed from existing species through gradual changes which occur in these organisms over a long period of time.
Evolution of species can occur through a process known as natural selection.
Natural selection is the process by which species which possess certain features that enable to adapt to changes in their environment survive while those that do not have these features die.
In conclusion, natural selection is one the processes by which evolution occur.
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I need help with questions 3 4 and 5 sorry if the picture is a little blurry
Answer:
3 the most likely answer is b
because the other choices are unrelated to the question
4 the choices are not appropriate as I think
but contextual answer is most likely c but it has to be the absorbtion of sugar by pancreases
7 answer is obviously c
Part C
AP wave is a type of seismic wave called a longitudinal wave, or pressure wave. Longitudinal waves occur when the
material that carries the wave is compressed and stretched. Aside from seismic waves, what is an example of a
longitudinal wave that you have observed?
Answer:
Sound wave is an another example of longitudinal wave. Sound wave is a vibration that is transmitted through a medium, such as air, water, and metals. Ultrasonic wave is defined as “inaudible sound with high frequency for human” the frequency of which generally exceeds 20 kHz. These days, sound wave which is not intended to be heard is also called ultrasonic wave.
Answer: A wave traveling through a compressed spring or a sound wave traveling through the air are examples of longitudinal waves.
Explanation: Simple answer from Edmentum
Compare the Viking 1 and 2 probes to the Pathfinder probe that landed on Mars in 1997. How was their technology different?
Mariner 4 and 9 and Viking 1 and 2 probes needed enhanced cameras and wireless communication equipment to take images of Mars's surface and send them back to Earth. According to the video, how did improving our technology lead to new discoveries about Mars?
Using internet resources, describe how advances in imaging and wireless communication for space exploration have led to changes in imaging devices and communication on Earth?
Mars Odyssey and Mars Express required spectrometric equipment that could analyze Mars's atmosphere and surface composition and temperatures. Using internet resources, describe some home or business technologies that use spectrometric equipment to analyze the atmosphere or temperature?
Using internet resources, research one space probe described in the video. Describe its goals and justify its purpose by explaining how it helped advance our understanding of the universe?
HELP PLEASE!
THANK YOU
Improving our technology lead to new discoveries about Mars because the new technology helps us to find more information about the environment of the Mars planet.
How did improving our technology lead to new discoveries about Mars?Scientists use Terrain-Relative Navigation which is a device due to which the Perseverance rover can estimate its location while moving through the atmosphere of Mars on its parachute. Improvement in our technology lead to new findings about Mars. The new technology helps us to collect more data about the Mars planet.
So we can conclude that Improving our technology lead to new discoveries about Mars because the new technology helps us to find more information about the environment of the Mars planet.
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Answer:
1. Viking 1 and Viking 2 probes transmitted panoramic views of the red and rocky soils back to Earth after six years later. The Pathfinder probe sent back large amounts of data of the environment especially about climatic variations in only three months. You can tell the technology was very different between these two because of how long it took for each probe to gather data.
2. In 1965, Mariner 4 and 9 probes found geological formations (Olympus Mans). The Mariner 4 sent back the first image of Mars. The Mariner 9 found erosion marks that indicated that there was once water on Mars. In 1976, the Viking 1 and 2 probes transmitted panoramic views of the soils. From 1965 to 1976, they were able to discover more about Mars over improving the technology. When the Viking probes were launched, we discovered more than when the Mariner probes were launched. For example, we were able to uncover how red and rocky the soils were.
3. We now receive information differently thanks to wireless technology. For instance, we now have computers and phones that let us contact someone by simply pressing a button. GPS may now be used to display various places. Additionally, we can now forecast the weather. We can know the weather for every day because forecasters have access to a ton of technology. Thus, we now substitute archaic methods for digital ones.
4. Fire alarm and air conditioning systems include technologies that incorporate various communication systems that enable them to react to changes in the atmosphere or temperature. Therefore, when the atmosphere's temperature fluctuates, they are utilized.
5. Viking 1 and 2 were used to find life on Mars. Since they launched the Mainer probes, they found that there was once water on Mars which later created the Viking 1 and 2 probes for further investigation. Along with finding life on Mars, they were also created to take better photos of the planet.
Fill in the blank.
1. Helping children to evaluate and overcome frustrating situations is one way to prevent ________
2. Accepting and supporting a child fosters that child's __________
3. Giving a child a reason for a request helps to foster ________
and _______ .
4. When a caregiver sets limits so that children know what they can and can't do, the caregiver is
expressing ________
of the children's actions.
5. When a caregiver offers to help a child pick up blocks, the caregiver alts as a ________
of prosocial behavior.
6. Self-esteem is increased by ______________
a child's efforts.
Helping children to evaluate and overcome frustrating situations is one way to prevent aggression.
aggressionself-esteemself-esteem; self-regulationsupportmodelsupporting What are the methods used to help your child get control of their anger?A lot of people have no idea about social skills. We are known to often picked them as we grow up learn by observing people close to us such as out parents and in interactions with others.
A way that a child can manage their anger is for a parent to teach our children to be able to know and deal with their anger, as we can be able to prevent its negative effect before it occur.
Therefore, Helping children to evaluate and overcome frustrating situations is one way to prevent aggression.
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Which phrase best describes a process represented in the diagram below?* 5 points
---
Fertilized egg
O a zygote dividing by mitosis
a zygote dividing by meiosis
a gamete dividing by mitosis
a gamete dividing by meiosis
Multicellular
organism
The image shows a zygote dividing by meiosis.
What is cell division?We know that cell division occurs when a cell breaks up to give daughter cells. This could occur by mitosis or by meiosis. In each case, we have two or four daughter cells being formed.
Now we have to look at the image very well. We can see that the process is occurring inside the gamete cells. There is a fertilized egg that divides into two. We know that a fertilized egg is called a zygote.
In conclusion, we can say that, the image shows a zygote dividing by meiosis.
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30 points!! Please helppp!! It’s the last question!! The following diagram shows the branching tree for four kingdoms and some of their shared derived characteristics.
What shared characteristic can be written at point X? Use complete sentences to explain your answer.
These are synapomorphies, or shared derived features. These are the traits that arose in particular groups of creatures' progenitors and were then passed on to those groups' offspring (or lineages).
What is synapomorphies?A unique character or character state that has evolved from its ancestor is known as an apomorphy.An apomorphy that is shared by two or more taxa is referred to as a synapomorphy and is thought to have originated in those taxa's most recent common ancestor. Synapomorphy suggests homology in cladistics.A characteristic or trait obtained through evolution from a similar ancestral form and shared by two or more taxonomic groups.Synapomorphies are traits that a group of taxa share because they descended from a single ancestor. Thus, synapomorphies provide as proof of historical connections and the corresponding hierarchical structure.An advanced character state that is shared by two or more taxa and that is obtained through evolution.It is inherited from the most recent common ancestor, whose own ancestor is presumed not to contain such qualities.Learn more about synapomorphies here:
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