Answer:
Molecular arrangement is the property of water remains unchanged when it recycles in the atmosphere .
Explanation:
In the water, Molecular arrangement remains same when it recycles in the atmosphere . A water molecule consists of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent.
This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons. All of the electron pairs—shared and unshared—repel each other. Thus it is the element or property which remains in same condition.
The chemical composition of water, specifically the molecular structure of H₂O, remains unchanged during the water cycle as it moves through the atmosphere, despite undergoing phase changes.
The property of water that remains unchanged when it recycles in the atmosphere is its chemical composition. Each water molecule, consisting of two hydrogen atoms and one oxygen atom (H₂O), maintains this structure throughout the water cycle, regardless of the physical state it may be in (solid, liquid, or gas). Despite continuous phase changes such as evaporation, condensation, and precipitation, the intrinsic molecular structure of water does not alter. Water's unique properties, including its high specific heat and density anomaly where solid water (ice) is less dense than liquid water, play crucial roles in weather systems and the environment without changing the actual H₂O molecule.
As water evaporates, forms clouds, and returns as precipitation, it moves energy through the atmosphere, driving weather patterns. The vast amount of energy required for the temperature of water to change protects our climate by absorbing and releasing heat at a slower rate. This characteristic also significantly impacts Earth's weather, as it allows water to store heat, influencing weather events like hurricanes. Despite these changes in state and temperature, the chemical composition of water remains consistent during the hydrologic cycle.
What do you think is the evolutionary significance of DNA polymerase? What do you think would happen if there was a genetic mutation on the genes encoding for DNA polymerase?
Answer:
Evolutionary significance of DNA polymerase: DNA polymerase is a key enzyme of DNA replication. During replication, it duplicates the DNA strand which then moves to next-generation, thus, continuing the life generations after generation.
If there will be a mutation in DNA polymerase, the nature of mutation would define the consequences. If it is a NEUTRAL mutation, it would not affect the action of DNA polymerase. However, if it a POSITIVE mutation, it may improve the function of DNA polymerase. On the other hand, if the mutation is NEGATIVE, it can be very harmful to living organisms because negative mutation can impair the function of enzyme thus stopping the DNA replication. This would most likely seize the life on Earth.
DNA polymerase plays a vital role in DNA replication, ensuring accurate transmission of genetic information. A genetic mutation on the genes encoding for DNA polymerase can compromise the fidelity of DNA replication and lead to the accumulation of harmful mutations.
Explanation:The Evolutionary Significance of DNA PolymeraseDNA polymerase is an essential enzyme in the process of DNA replication. It catalyzes the synthesis of new DNA strands by adding complementary nucleotides to the growing chain during DNA replication.
The evolutionary significance of DNA polymerase lies in its accuracy and efficiency in replicating DNA. Its fidelity ensures that genetic information is faithfully preserved, allowing for the transmission of genetic traits from one generation to the next.
If there is a genetic mutation on the genes encoding for DNA polymerase, it can lead to a compromised fidelity of DNA replication. This can result in a higher rate of errors during DNA replication, leading to the accumulation of mutations in the genome. These mutations can potentially have detrimental effects on the organism, including genetic disorders, diseases, or reduced survival and reproductive fitness.
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Unspecialized human cells are called ____________.
Question 3 options:
cancer cells.
mitotic cells.
signal cells.
stem cells.
Answer:
D. Stem Cells
Explanation:
Stem cells are cells that are able to be developed into most other types of cells in order to repair and restore damage in the body. To do this, stem cells must be able to specialize into many other different cell types. This means that first the stem cells must be an unspecialized human cell to later become specialized.
I need help please and thank you
Answer:
It's C.
Explanation:
It's not Muscles because muscles are tissues made up of specialized elongated cells or fibres which can contract(shorten or thicken) to bring about movements. And we all know Ca and Proteins are needed for the formation of strong and healthy bones, muscles and teeth. Same goes for ligaments.
For polypeptide chains, its a vital part involved in the breaking down of Proteins.
Proteins->Proteoses->Peotones->Polypeptide-> amino acids.
PeAcE.
Investigator Smith is convinced that he has found a gun used in two shootings. When compared under the microscope, the two bullets do not seem to match up. If Investigator Smith is correct, what could be a reason why the bullets don't match?
The bullets hit at different speeds.
The bullets were bought from different gun stores.
The bullets were fired one right after the other.
One bullet was fired several years after the other.
Answer:
D) One bullet was fired several years after the other.
Explanation:
Every gun barrel has rotating groves because gives to the bullet a spin movement in order to improve accuracy during its flight. This spiralling groves leave in the bullet some unique marks, that if you can fire another bullet from the same gun, under a microscope an investigator can match this groves. But time and the use on the gun can change the patron of this marks leading to the deterioration on the gun barrel, possibly take us to a missmatch on two bullets fired by the same gun.
Final answer:
The bullets don't match because they were fired from different guns, which create unique markings on the bullets.
Explanation:
Investigator Smith may have incorrectly concluded that the gun he found was used in the two shootings. One possible reason why the bullets don't match is that they were fired from different guns. Each gun leaves distinct markings on a bullet when it is fired, creating unique striations. If the bullets under the microscope do not show similar markings, it suggests they were not fired from the same gun.
Therefore, the correct answer is that the bullets were fired from different guns. This could be due to different guns having different barrel characteristics, wear and tear, manufacturing defects, or modifications.
It is important for a forensic investigator to analyze various factors, such as bullet markings and gun characteristics, to determine if a bullet was fired from a specific gun.
Which method is most likely to be used to determine the absolute age of animal bones that are less than 45,000 years old ?
Answer: CARBON DATING
Geologists do not use carbon-based radiometric dating to determine the age of rocks. Carbon dating only works for objects that are younger than about 50,000 years, and most rocks of interest are older than that. Carbon dating is used by archeologists to date trees, plants, and animal remains; as well as human artifacts made from wood and leather; because these items are generally younger than 50,000 years.
Velocity (m/s)
5
8
9
10
11
12
6 7
Time (s)
3
) A dog was west of his home for a short time and returns home then runs past it in the other direction (east). The graph shows
his position as a function of time.
How long did the dog stop at his home before running again?
A)1 seconds
B)2 seconds
C)5 seconds
D)10 seconds
Answer:
Although the graph was missing, I managed to find it on another source. According to the given conditions, correct answer is option C. A dog stop at his home for 5 seconds.
Reason:
In the graph, The dog was west of his home then he came back, he stopped at his home then runs to other direction (East).
When the dog was running from west to home, his running speed or velocity was 1 m/s which was then decreased to 0 m/s after reaching home. Here (at home) the dog stopped for a while (5 seconds according to the graph), and his velocity was 0 m/s. Then, he started running again to other East direction with velocity -2 m/s (opposite direction).
See attached images for further description.
How can an earthquake or landslide produce a tsunami
Answer:
Tsunamis are large, potentially deadly and destructive sea waves, most of which are formed as a result of submarine earthquakes.
Explanation:
What pattern do you observe in beak length from 1973 to 1978
Answer:
In 1973,
The maximum length for the beak of birds was obserbed to be less than 12mm in length
While, at 1978, it was observed that some birds had beak length at 12mm.
From 1973 to 1978, it can be observed that short beaks bird was more in population than 1978.
In the 1600s, advances in microscopy led to the developm
vances in microscopy led to the development of cell theory) Which of the following statements is part of the
ll theory?
A.All cells require water and oxygen to survive.
B. All living things are made of one or more cells.
C.All cells have organelles with specialized functions.
D.All living things rely on several different types of cells.
2. In order to function, all living things require which of the following?
A cells
B. nuclei
c. organs
D tissues
3.The 1830s Theodor Schwann showed that the mature tissues of animals were traceable to embryonic cells. Which of the
wing statements of cell theory does this provide evidence for?
A) All living things are made from cells.
B. Cells are the basic units of structure and function in an organism.
3. All cells come from preexisting cells.
D.Each cell has a specific design and purpose.
Answer:
Hello! The answers are:
B. All living things are made of one or more cells.A. cellsC. All cells come from preexisting cells.Explanation:
All of the statements in the questions are features of the cell theory.
Cell Theory:
The cell theory, proposed by scientists Theodor Schwann, Matthias Schleiden, and Rudolph Virchow, is the basic principle of biology. The cell theory contains three features or clauses that explain the basic structure and function of life. The cell theory postulates the following:
All living things, either unicellular or multi-cellular, are composed of cells.All cells originate from pre-existing cells, not through spontaneous generation.The cell is the basic unit of life. This basically means that the cell governs all structural and functional processes of life.In which area would you have the most difficulty breathing?
Answer:
The top of the mountain
Explanation:
The air is the thinnest at high altitudes, like the top of a mountain
Answer:
The top of the mountain
Explanation:
The top of the mountain is where the air is under the least pressure and, a lesser amount of oxygen is present, along with that, because in the picture, the top of the mountain would have the least amount of air pressure, said air (specifically oxygen) will have more difficulty making it through your lung's selectively permeable membranes, and making it's way around your body in your red blood cells.
what do the letters on the inside of the puunnett squre stand for
Answer:
The possible genotypes of their children
Explanation:
A punnet square can be described as a diagram which illustrates the outcomes of a cross. The letters on the outside of a punnet square depict the genotype of the parents whereas the letters on the inside depict the genotype of the children.
For example consider the following punnet square:
A a
A AA Aa
a Aa aa
In the following punnet square, Aa and Aa are the genotypes of the parents.
the children would have the probability of having the following genotypes: AA, Aa, Aa, aa
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#30
Single-celled algae and multicellular plants
both perform photosynthesis.
Photosynthesis is the process by which both
types of organisms
A. make food.
B. get rid of wastes.
C. extract energy from food.
D. reproduce.
Answer:
The correct option is A) make food.
Explanation:
Photosynthesis can be described as a process by which organisms like plant and some algae make their own food. They use light energy from the sun to convert carbon dioxide and water into glucose and oxygen. Oxygen is the by- product of this reaction. Hence, option A is correct.
Other options are wrong because photosynthesis is not a process by which energy can be extracted from food or it is not a process by which excretion of waste occurs. Neither is it a process of reproduction.
The single-celled algae and multicellular plants A. make food. Therefore , A. make food is correct.
Photosynthesis is a vital biological process in which both single-celled algae and multicellular plants harness energy from sunlight to convert carbon dioxide and water into glucose.
This transformative process occurs in chloroplasts, where pigments such as chlorophyll capture light energy.
This captured energy facilitates the synthesis of carbohydrates, serving as the primary source of organic nutrients for these organisms.
During photosynthesis, light energy is converted into chemical energy, stored in the form of glucose.
This glucose not only serves as a direct energy source for the organisms but also acts as a foundational building block for other essential organic molecules.
By utilizing carbon dioxide and releasing oxygen as a byproduct, photosynthesis plays a crucial role in maintaining atmospheric balance.
While photosynthesis is indeed a process vital for generating sustenance, it is not directly involved in waste elimination, energy extraction from food, or reproduction.
The primary focus is on the synthesis of organic compounds to support the metabolic and growth needs of these organisms.
option A, "make food," accurately encapsulates the core function of photosynthesis for both single-celled algae and multicellular plants.
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Refer the the graph below showing the absorption spectrum of chlorophyll a. Explain what the graph is showing
Answer: The graph shows that chlorophyll a absorbs light principally around 420-450 nm and 650-680nm wavelengths
Explanation: Chlorophyll a is a pigment found in plants that traps light energy for use in photosynthesis. Chlorophyll a absorbs light mostly in the blue and orange-red wavelengths. This is shown in the graph, where the peaks are around the 400nm and 600nm wavelengths, corresponding to blue and red in visible light.
This absorption means the pigment is 'excited' by this light, sending into a higher state if energy which provides energy for the reactions of photosynthesis.
There were no geologists alive when the Bright Angel shale layer formed. However, scientists have been able to determine that this rock formed near the shore of an ocean. What evidence could geologists use today to find out about this ancient rock layer?
Answer:
because people where not alive yet oontill cenoznic era
Explanation:
Answer: Scientists could examine rock that formed recently and compare it to Bright Angel Shale. If the recent rock forms near oceans, the Bright Angel Shale rocks may have too.
Which is a better conductor of heat: air or a copper wire? Why?
A) Air is a better conductor of heat because it is a mixture.
B) Copper is a better conductor of heat because it contains electrons.
C) Air conducts heat better because the molecules in a gas are further apart.
D) Copper wire conducts heat better because molecules in a solid are closer together.
Answer:
i think the answer is D
Explanation:
A better conductor of heat is copper wire, which conducts heat better because molecules in a solid are closer together, which is option D. Copper is a good conductor of heat because it has free electrons that can move throughout the metal and transfer thermal energy quickly.
What is copper?Copper is a better conductor of heat than air because of the way its atoms and molecules are arranged. In a solid like copper, the atoms are packed closely together, allowing heat energy to be transferred quickly through the material. In contrast, in a gas like air, the molecules are much further apart, and heat energy transfers more slowly as a result. This is why copper is often used in electrical wiring and in other applications where high conductivity is needed.
Hence, a better conductor of heat is copper wire, which conducts heat better because molecules in a solid are closer together, which is option D.
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Compare the composition of the Inhaled and exhaled air ?
Chlorenchyma and aerenchyma are modified ____________ (a) phloem (b) sclerenchyma (c) collenchyma (d) parenchyma
They are D) modified parenchyma
Science help please
Answer: It would actually be C
Explanation: the mRNA stand for Messenger RNA. It's the type of RNA that carries protein-building. Hence... its C
Where do clouds form? Select three options.
A. at the ground
B. in the upper atmosphere
C. near the Earth’s surface
D. where the air has very low humidity
E. where the atmosphere contains few particles
B
By the upper atmosphere, it is meant the upper atmosphere of the troposphere – the lowest layer of the earth’s atmosphere where weather events occur.
Explanation:
Liquid water first evaporates from the earth’s surface, mostly due to heat energy from the sun. The water vapor cools as it rises into the upper troposphere. This is because the upper atmosphere is cooler. As the water vapor cools, it coalesces into water droplets. These droplets, for them to form a cloud, need seed-like particles – like dust suspended in the atmosphere– to coalescence on. This way, the droplets grow bigger and this is how clouds are formed.
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Answer:
B DE
Explanation:
Which statements describe the fossil record? Check all that apply.
There is very little fossil evidence for the first 4 billion years of Earth.
There is very little fossil evidence for the last 600 million years of Earth.
Most of the fossil evidence is from the first 4 billion years of Earth.
Most of the fossil evidence is from the last 600 million years of Earth.
The fossil record is complete.
The fossil record is not complete.
Statements that gave description as regards fossils records in the question are;
There is very little fossil evidence for the first 4 billion years of Earth.The fossil record is complete.Fossil record can be regarded as documented records which is dine through help of by fossils.
These fossils comes from the remains of organisms as well as imprints of organisms which is been preserved in sedimentary rock as far as earlier geological periods.
For the first 4 billion years of Earth, the records of Fossil evidence is very little, but as time goes on, there are alot of evidence discovered, and the totality is known as Fossil records.
This records helps to get the record of the occurrence of living organism as well as its evolution, geological time as inferred from fossils.
Some of Examples are:exoskeletonsbonesobjects preserved in amber hairshells stone imprints of animalsThe totality of fossils is known as the fossil record
Therefore, Fossil records helps in explanation of evolution of living organisms
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The correct options are (A), (D), and (F). The statements that describe the fossil record accurately are There is very little fossil evidence for the first 4 billion years of Earth, Most of the fossil evidence is from the last 600 million years of Earth and The fossil record is not complete.
Let's evaluate each statement about the fossil record:
A) There is very little fossil evidence for the first 4 billion years of Earth.
True Fossil evidence is sparse for the first 4 billion years of Earth's history, primarily because early life forms were mostly microscopic and not easily preserved. Fossils from this period are rare and mostly consist of simple organisms like bacteria.B) There is very little fossil evidence for the last 600 million years of Earth.
FalseThere is actually a considerable amount of fossil evidence for the last 600 million years, especially since this period includes the Cambrian Explosion, a time of rapid diversification of life forms, and the development of complex organisms.C) Most of the fossil evidence is from the first 4 billion years of Earth.
FalseMost of the fossil evidence comes from the last 600 million years, especially since more complex and larger organisms became prevalent and more likely to be preserved as fossils.D) Most of the fossil evidence is from the last 600 million years of Earth.
TrueMost of the fossil record, particularly detailed and diverse fossils, comes from the last 600 million years, which includes the Cambrian period to the present. This period features a wealth of preserved life forms and a greater diversity of fossils.E) The fossil record is complete.
FalseThe fossil record is not complete. Many factors, such as geological processes and the nature of fossilization, result in gaps in the record. Not all organisms are equally likely to be preserved as fossils.F) The fossil record is not complete.
TrueThe fossil record is indeed incomplete. Many organisms did not fossilize, and geological processes can destroy fossils, leaving gaps in our understanding of the history of life.The complete question is:
Which statements describe the fossil record? Check all that apply.
A) There is very little fossil evidence for the first 4 billion years of Earth.
B) There is very little fossil evidence for the last 600 million years of Earth.
C) Most of the fossil evidence is from the first 4 billion years of Earth.
D) Most of the fossil evidence is from the last 600 million years of Earth.
E) The fossil record is complete.
F) The fossil record is not complete.
PLEASE ANSWER QUICK!!! Jonas drew a diagram to compare two kinds of evidence that support the theory of evolution. Which label belongs in the area marked Z? no longer used by species link two species to a common ancestor evidence of adaptations to similar environments part of comparative anatomy studies
The label that belongs in the area marked Z indicates evidence of adaptations to similar environments. Thus, the correct option for this question is C.
What is Evolution?Evolution may be defined as a type of biological process that involves changes in the proportions of biological types in a population over a specific period of time. It involves the descent with modification from preexisting species.
The term adaptation can be defined as the evolutionary strategies through which species face different environments. Different kinds of species may have identical types of adaptations in order to face the same environmental conditions.
Therefore, the label that belongs in the area marked Z indicates evidence of adaptations to similar environments. Thus, the correct option for this question is C.
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Answer:
The correct answer is (C) evidence of adaptations to similar environments.
A cell that is undergoing mitosis is examined with a light microscope. An observation that would allow for identification of the cell as an animal cell rather than a plant cell would be
Question 10 options:
the centrioles migrating.
the chromosome pairs separating from each other.
the chromosomes twisting about each other.
the nucleoli disappearing.
Answer:
An observation that would allow for identification of the cell as an animal cell rather than a plant cell would be the centrioles migrating.
Explanation:
Centrioles start moving in the direction of opposite ends of the cell, whereas the microtubules starts moving from the centrioles and gets attached to the centromeres of chromosomes. the microtubules that have been projecting from the centrioles on opposite poles of the cell are connected to individual centromere and further form into spindle fibers. After the accumulation of chromatin into chromosomes in prophase, resulting in the breaking apart of the membrane or nuclear envelope. In case of animal cells, the centrioles present at the nucleus starts to separate and go to the opposite poles of the cell. As the centrioles transfer, a spindle is seen to be formed between them.
In pea plants, purple flowers are dominant over white flowers, which are recessive. Cross two homozygous dominant (PP) parents.
Final answer:
Crossing two homozygous dominant pea plants (PP) will result in 100% homozygous dominant offspring (PP) with purple flowers.
Explanation:
When two homozygous dominant (PP) pea plants with purple flowers are crossed, all of the offspring will also have purple flowers. This is because purple flowers are dominant over white flowers. As these pea plants are homozygous dominant, each parent will contribute a dominant P allele to their offspring, resulting in offspring with a PP genotype. Therefore, a Punnett square analysis for this cross is not required as the outcome will be 100% PP offspring with purple flowers.
Which of the following best defines climate? (3 points) Short-term atmospheric conditions of a region The weather pattern of an area over two weeks or less Average weather conditions of a region over the long term A pattern of weather that never changes
Answer:
Average weather conditions of a region over the long term
Explanation:
Answer:
Average weather conditions of a region over the long term
Explanation: That is the correct answer I think
Many wants to increase the yield of herd garden. A friend suggest that she pinch of the tops of the plants as the grow by cutting off the apical meristem how should this increase yield?
Answer: Photosynthesis takes place in the chloroplast of green plant cells
Explanation:
Is it true that all cells have the same genes, but different genes are active in different cells?
Answer:
Is it true that all cells have the same genes, but different genes are active in different cells.
No, all cells are made up of a gene which is inherited from the parents cell. The gene is located in the DNA which is found in the nucleus of every living cell
Explanation:
Which genotypes will be included for the offspring in the Punnett square for this cross?
PP, Pp, and pp
PP and pp
PP and Pp
Pp only
Pp only will be included for the offspring in the Punnett square for this cross
Explanation:
In an experiment Mendel shows how to keep it in grid when he conducts a cross and presents a way of showing the potential combinations of parental alleles in the offspring is to align the alleles and call it a Punnett square. It functions like a multiplication table.
The phenotype experiment work on appearance of organism. It can be understood as if female part of flower is PP genotype it means entire offspring has pink color. If female part has Pp genotype it means 50% of offspring will have pink and 50% have another color.
Answer:
d
Explanation:
Explain how gases in the
atmosphere can cause the
greenhouse effect and describe
one problem which it may cause
PLEASE HELP ME
Gases in the atmosphere, ie., carbon dioxide, nitrous oxide, and methane, trap the heat from water vapor the sun has evaporated. This can cause higher temperatures, and forms the greenhouse effect. A problem it causes is global warming, since those gasses are trapping the heat in the atmosphere, harming the ozone layer, causing more ultraviolet rays to go through, which is very harmful to humans.
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Explanation:
The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat. This process makes Earth much warmer than it would be without an atmosphere.This cause global warming
state in sequence four main steps of sexual reproduction and write two advantages of such reproduction
Answer:
Hello!
Sexual Reproduction has slightly different stages in plants and animals. Sexual reproduction in plants has the following steps:
PollinationGamete germinationFertilizationZygote FormationSexual reproduction in animals has the following steps:
Gamete formation Fertilization Zygote formation Zygote develops into embryoAdvantages:
The embryo develops in a protective environment i.e. the ovary in plants and uterus in animals. Sexual reproduction produces genetic variations in the offspring that aid survival and incur resistance to diseases.Explanation:
* Pre-fertilization stages include meiosis 1 and 2 that involve the formation of genetically different gametes.
* The stages, zygote formation and the development of the zygote into an embryo and later into an individual, are classed as post-fertilization stages.