Answer: The Cells
Explanation: Cells are the smallest living organism in an ecosystem
The cell is the smallest unit of organization in an ecosystem.
What is a cell?The cell function of an animal cell is to perform like a hormone and engage production of energy for the cells
The cell function of a plant cell is to carry out all of the functions necessary for survival.
Animal cells are eukaryotic cells which are surrounded by a plasma membrane. It contains the nucleus and the organelles that are membrane-bound.
Thus,The cell is the smallest unit of organization in an ecosystem.
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Which describes the function of the human sperm cell’s structure?
A)The nucleus contains all 46 chromosomes.
B)The tail allows it to travel to the egg.
C)The head contains a basic substance that counteracts acidic substances in the vagina.
D)The sperm’s structure allows it to live for two weeks in the vagina.
Answer:
The correct answer is B. The sperm tail helps in propelling and moving the sperm to reach the egg. It is made of proteins which contract and relax to cause the movement. The head and tail however, are covered by a single membrane. Head composes the nucleus.
Answer:
b
Explanation:
why not
The wing of a bird and the leg of a horse are very different looking structures. Although they look different, bird wings and horse legs are very similar in the arrangement of the bones that make up the limb. Which term is used by scientists to describe structures that look different on the outside but are actually similar in construction and develop from the same embryonic tissues?
A) common descent
B) ancillary anatomy
C) vestigial structures
D) homologous structures
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It is D, homologous structures.
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Answer: D) homologous structures
Explanation:
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Changes in environmental conditions always result in new ecosystems and loss of biodiversity characterized by an increase in the number of some species, the evolution of new species, and the extinction of some species.
Use what you have learned from the lesson, as well as reliable and reputable resources, to evaluate this claim.
The statement is a short one, but it manages to sum up what happens in nature in a simplified manner.
All the species have evolved to a certain type of environment, thus being perfectly well adapted to certain living conditions, and developing traits that are advantageous for the survival in that particular environment. But the Earth is constantly changing, and those changes result in changes of the environment, sometimes gradually, sometimes very quickly. The loss or change of environment always has huge impact on the species. Some go extinct, especially the ones that have been too specialized, while the more opportunistic and less specialized species often manage to survive. The ones that manage to survive face a new environment, so they evolve in a way that is advantageous for them to survive in the new environment, thus giving rise to new species. Other species may already have the required traits for the new environment but have been living in different area, so they will gradually move in this new environment as it suits them, thus having a situation where the ecosystems will eventually be totally changed and unrecognizable from the predeceasing ecosystems.
Answer:
Changes in environmental conditions like floods or forest fires, always result in new ecosystems and loss of biodiversity characterized by an increase in the number of some species, the evolution of new species, and the extinction of some species. If humans are hunting for predators like jaguars, this would affect the food chain and cause a loss of biodiversity. The prey would survive and reproduce more because there would be fewer predators to eat them. Therefore, the population can increase. Species can also evolve to fit the environmental conditions. For example, if there is a major drought in an area, some organisms could adapt and evolve to the drought. However, the organisms that can't evolve would die and would also cause a loss of biodiversity. Environmental conditions like climate change affect many organisms. One pine tree species went extinct because of climate change. The seeds couldn't grow and reproduce in the weather, so the organism gradually went extinct.
what evidence places fish as the first vertebrates
Answer:
Fossils
Explanation:
Phosphorus isn't as abundant as nitrogen or carbon because it is contained in the
+ and
released with
processes, which can take a long time.
Answer: Lithosphere and geological
Explanation: The phosphorus is not as abundant as carbon because it does not occurs in the form of gas.
The phosphorous cycle is completed in the lithosphere as well as geological process which takes time. It is contained in the rocks and gets run off through water after weathering.This is how the plants get phosphorous from soil and water.
The run off then flows towards ocean and sea and gets deposited in the ocean. This is how phosphorous cycle takes place.
Phosphorus is crucial for life but isn't as abundant as nitrogen or carbon because it's found primarily as phosphate, which moves through the environment very slowly. It's leached from rocks and makes its way into bodies of water, where it can stay for thousands of years.
Explanation:Phosphorus is an essential nutrient for living processes; it's a major component of nucleic acid and phospholipids, and, as calcium phosphate, makes up the supportive components of our bones. Phosphorus is often the limiting nutrient, necessary for growth, in aquatic ecosystems. Phosphorus occurs in nature as the phosphate ion (PO4³-).
In addition to phosphate runoff as a result of human activity, natural surface runoff occurs when phosphate is leached from phosphate-containing rock by weathering, which sends phosphates into rivers, lakes, and the ocean. The movement of phosphate from the ocean to the land and through the soil is incredibly slow, with the average phosphate ion having an oceanic residence time between 20,000 and 100,000 years. Consequently, the abundance of phosphorus is relatively low when compared to elements like nitrogen or carbon.
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How does water affect metamorphic processes? A. It decreases the rate at which metamorphic reactions take place. B. It stops elements from moving around within earths crust. C. it can have elevated concentrations of dissolved substances. D. It prevents the transfer of ions between and within minerals.
Answer:
it can have elevated concentrations of dissolved substances
Explanation:
Water is widely regarded as a universals solvent. During a metamorphic process, the presence of fluids most especially water cannot be over empahisized.
Water in metamorphic processes helps to concentrate dissolve materials and moves them from one point to another within the crust. By so doing, water helps to facilitate the rate at which the reaction and transformation occurs. Water available for metamorphic processes usually have elevated temperature, this would further aid to catalyse the transformation work on the rock.
Water plays nearly the same role as pressure and temperature in a metamorphic reaction. It serves as the mobile unit to move materials from one point to the to another. The water concentrates the dissolve materials that comes in contact with it and utilizes it to further produce new metamorphic minerals. Generally, fluids allow for better mobility.
Answer:
It can have elevated concentrations of dissolved substances.
exposure to 100 R's :
•will have little effect
•can cause radiation sickness
•is enough to kill a person
?
Answer:
Will have little effect
Answer:
Your answer is B. Radiation Sickness.
Explanation:
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How many people die of lung cancer every year?
a.
over 140,000.
b.
less than 10,000.
c.
less than 50,000.
d.
none of the above.
the most recent year for which we have statistics available, 157,423people -- 86,689 men and 70,734women -- died from lung cancer in the U.S.
How might a gene mutation be silent, with no observable affect on a cell or an organism?
A. Many proteins are superfluous to the function of a cell. A gene mutation in a gene that encodes an unnecessary protein would have no observable affect on the cell or the organism.
B. Codons are complementary to anti-codons in tRNA. A gene mutation that changes a codon to its anti-codon would have no observable effect on the cell or the organism.
C. Several codons are stop codons. A gene mutation that inserts a stop codon when only a few amino acids remain in the peptide sequence would have no observable effect on the cell or the organism.
D. Many amino acids are coded by multiple codons. A gene mutation that encodes the same amino acid would have no observable effect on the cell or the organism.
Answer:
D
Explanation:
There is approximately 64 base combination of codons (3 bases sequences) that are possible from the four bases nucleotides that make up our DNA. Yet there are only approximately 20 types of amino acids in our bodies. This means that other than the 4 start and stop codons, there is a lot of redundancy in the coding of amino acids by codons. Therefore some mutations on codons will have no effect on the type of amino acid translated. These are the silent mutations.
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Quick question, how do scientists use genetic information? Why is it useful?
Answer:
The new genetic information is useful to public health scientists because it allows them to test for relationships between diseases and genetics. The most common way scientists collect genetic information on a DNA sample is to interrogate a specific point in the genome using a technique we call “genotyping.”
Explanation:
Answer:
The new genetic information is useful to public health scientists because it allows them to test for relationships between diseases and genetics
What will probably happen to the plant if it does not receive any water for a month?
A.
It will stop growing.
B.
It will continue to grow at the same rate.
C.
It will still grow, but it will turn a darker green.
D.
It will start growing faster.
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Answer: Photosynthesis is the light dependent process which must occur for the plant to live. This process also requires water and carbon dioxide. If photosynthesis does not occur the plant will wilt and die.
Explanation:
A person asks questions about what causes sound waves to transfer through the air. what is the best description of what this person is doing? A listening to music B looking for a solution C designing a new device D studying science
Answer:
I think it's A could be wrong
Explanation:
The person seeking answers about what causes sound waves to transfer through the air is essentially studying science. They're investigating how sound waves, disturbances of matter that carry from their source, work in transferring sound. The process involves vibrations causing variations in pressure, which our ears and brains interpret as sound.
Explanation:The person asking questions about what causes sound waves to transfer through the air is essentially studying science, specifically Physics. Sound waves are a type of pressure wave and are disturbances of matter that are transmitted from their source outward. An example of this can be when a speaker produces sound. The speaker uses a cone to create oscillations that result in the vibration of air molecules. These vibrations form compressions (high-pressure regions) and rarefactions (low-pressure regions), which move out as longitudinal pressure waves or sound waves with the same frequency as the speaker.
In human hearing, these sound waves cause the eardrum to vibrate. This complicated mechanism then converts the vibrations into nerve impulses which the brain perceives as sound. Even things like music are pleasant due to the changing frequencies of various instruments and voices, which form different sound waves.
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How are natural resources classified
As renewable or no renewable
As naturally occuring or manufactured
As good for the environment or bad for the environment
As readily available or not
Answer:
As renewable or no renewable
Explanation:
The natural resources are classified as renewable or no renewable. The renewable natural resources are the ones that are constantly present, caused by the nature, and they can not be spent. Some of these natural resources are the wind, and the sunlight. The no renewable resources are the ones that are in limited amounts, thus they can be spent. Some of these natural resources are the oil, natural gas, and coal. The no renewable natural resources though are much more used than the renewable ones. The reason for this is that tend to produce more energy, and also are relatively cheap. The renewable natural resources are on the rise when it comes to their usage, and lot of nations make a lot of effort to make them their primary source of energy, but it seems that that will take a while.
Answer:
As renewable or nonrenewable
Explanation:
why does the complexity of gene regulation mirror the complexity of the organism in which it is found?
Answer:
Organisms that are more complex, such as eukaryotes, have cells that are specialized for specific functions. Gene regulation needs to be more complex to produce these specialized cells for complex organisms. Please Mark Me Brainliest
Explanation:
What is a blastula?——————————
The blastula (from Greek βλαστός (blastos), meaning "sprout") is a hollow sphere of cells, referred to as blastomeres, surrounding an inner fluid-filled cavity called the blastocoele formed during an early stage of embryonic development in animals.
Answer:
An early stage of embryonic development having a hollow mass of cells.
Explanation:
During embryonic development, blastula represents a development stage, characterized by a hollow mass of cells. These cells are known as blastomeres. Inside the ball of cells, a fluid-filled cavity is present, known as segmentation cavity or blastocoel.
In mammals, blastula is called as blastocyst, including humans.
what specialized tissue do vasculer plants have that other plants do not
Answer:
You didnt give me and choices so out of the information i have from this answer i can conclude that the answer is out of these 3 Options.
1.) Phyllids 2.) Xylem 3.) Phloem
The specialized tissue that vascular plants have that other plants dont are xylem and phloem. These vascular tissues allow plants to grow without drying out.
Which sphere is part of the carbon and water cycles but absent form the phosphorus cycle
Answer: Atmosphere
Explanation:
What is a solution give a example
Answer:
A solution is a homogeneous mixture of two or more substances.
Salt Water
Explanation:
Which base sequence in the DNA molecule identifies the region where a transcription factor will bind, allowing RNA polymerase to attach to the molecule?
a. AACCTG
b. TGGA
c. TATATA
d. AGGAT
TATATA base sequence in the DNA molecule identifies the region where a transcription factor will bind, allowing RNA polymerase to attach to the molecule. So, the correct option is C.
What is Transcription factor?A transcription factor is defined as a protein that regulates the rate of transcription of genetic information from DNA to messenger RNA by binding to a specific DNA sequence.
Most of the transcription factors are located in the cytoplasm, after which it receives signals from the cell membrane signal transduction, transcription factors are activated and then move from the cytoplasm to the nucleus where they interact with the associated DNA frames.
The TATATA base sequence in the DNA molecule identifies the region where a transcription factor will bind.
Thus, the correct option is C.
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Final answer:
The TATA box, represented by the sequence c) TATATA, is where transcription factors bind allowing RNA polymerase to initiate transcription.
Explanation:
The region on a DNA molecule where a transcription factor will bind, allowing RNA polymerase to attach to the molecule, is identified by a specific base sequence known as the TATA box. This sequence is typically a repeat of thymine and adenine dinucleotides, represented as TATATA or a slight variant thereof. Transcription factors first bind to the TATA box, which allows for the assembly of an initiation complex. Subsequently, RNA polymerase recognizes this complex and binds to the DNA, initiating transcription.
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A small population of lizards lives on an island where the environment is changing quickly.Which BEST describes why the lizards may become extinct?
A.The lizards are not able to reproduce
B.The lizards are undergoing natural selection
C.The lizards do not have enough genetic variation
D.The lizards have to much overproduction
Answer: B
Explanation: The lizards are trying to adapt t the environment, therefore, it would be B.
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Its B for the question hope this awnser helps you
Describe two roles that enzymes play in DNA replication. . . .
×║thank you║×
Answer:
The DNA enzyme helicase unzips the DNA strand so that one side can be used as a template to make a new strand. DNA polymerase is another enzyme that takes nucleotides from solution and bonds them to other nucleotides.
11. How does active transport differ from all other forms of transportation?
A. It creates an equilibrium shift
B. It maintains homeostasis
C. It shifts from high to low
D. It requires energy
Though both active transport and passive transport involve ion movement and use ion channels to move ions across the cell membrane, in or out of the cell.
Passive Transport (or Diffusion) moves ions from high concentration to low, using no metabolic energy. Active Transport moves ions from low concentration to high, using metabolic energy in the form of ATP.
So the answer is C.
Answer:
The Answer is D It requires energy
Explanation:
The movement of ions are assisted enzymes which uses energy.
How does ATP supply energy for cellular activities? by breaking off a phosphate group from its structure by releasing the sugar molecule from its structure by adding a phosphate group to its structure by attaching itself to a glucose molecule
Answer:
A) by breaking off a phosphate group from its structure
Explanation:
ATP supplies energy for cellular activities by breaking off a phosphate group from its structure. This released energy is used to do work by the cell, such as muscle contraction.
Explanation:ATP, or adenosine triphosphate, supplies energy for cellular activities by breaking off a phosphate group from its structure. When ATP is broken down, usually by the removal of its terminal phosphate group, energy is released. This energy is used to do work by the cell, usually by the binding of the released phosphate to another molecule, thus activating it. For example, in the mechanical work of muscle contraction, ATP supplies energy to move the contractile muscle proteins.
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Which of the following correctly lists the three major locations of freshwater on Earth in order, from greatest amount of water to least amount of water?
A. ice caps and glaciers, groundwater, surface water
B. surface water, ice caps and glaciers, groundwater
C. groundwater, surface water, ice caps and glaciers
D. surface water, groundwater, ice caps and glaciers
A. Option is correct
Ice caps and glaciers - 69%
Groundwater - 30%
Surface water - less than 1 %
Answer:
A. ice caps and glaciers, groundwater, surface water
Explanation:
Fresh water is a type of water, found in nature, in which there is no salt. It is water suitable for consumption (provided it is treated) for humans and animals. Fresh water is also used in agriculture. Only about 2.5% of the water found on our planet is sweet. It is mainly found in polar caps and glaciers, groundwater, surface water.
With the growth of the world population, fresh water has become increasingly scarce. Overuse, waste and water pollution are the main problems related to fresh water today.
As it is a precious and scarce mineral resource, society must be aware that, in order not to run out of water in the near future, it is necessary to avoid waste, use it rationally and do not pollute rivers, lakes and water sources.
State two additional kinds of evidence beside structural and molecular that can further support the relationship between species
Answer:
Behavior maybe? The diet?
Explanation:
in general which step ofvthe scientific method is generally follows a hypothesis
Answer:
test your hypothesis
Explanation:
Answer:
The correct answer will be-perform the experiment to test the hypothesis
Explanation:
In a scientific method, the sequential steps are followed to understand and explain any natural phenomenon.
The important step of the scientific method is the formation of the prediction based on the background research called hypothesis. The hypothesis exhibit a limited explanation of the scientific explanation.
Therefore, the next step after the formation of the hypothesis will be the design of an experiment to test the hypothesis. The experiment must be performed to test the hypothesis and is the correct answer.
Who examines and coordinates the cleanup of polluted sites?
Answer:
The Environment Protection agency examines and coordinates these sites.
Explanation:
if a control group is NOT included in an experiment, it would be difficult to
Answer:
Find the base of the experiment
Explanation:
If i tested how high my new jumping boots could go, then i would first have the person jump without them and then jump with them. I would use the control (without the shoes) and compare it to how high the person went WITH them on.
Without a control group in an experiment, it's difficult to determine whether the outcomes observed were truly due to the variable being tested or some other factors. A control group acts as a reference point, showing what happens when the variable isn't applied, which is key for comparison with the experimental group. Excluding a control group may result in misleading or unreliable results despite the additional difficulty of including one.
Explanation:If a control group is NOT included in an experiment, it would be difficult to discern whether observed outcomes were in fact due to the variable being tested or if they resulted from some other external factors. The control group acts as a baseline or reference point in an experiment. It represents what happens when the variable or treatment is not applied, which is vital for comparison with the experimental group where the treatment is applied.
For example, in drug testing experiments, a control group may receive a placebo while the experimental group receives the actual medication. Both groups must otherwise be managed exactly the same, meaning they need to have comparable characteristics and demographics. By doing this, researchers can confidently attribute any statistically significant differences in outcomes between the two groups to the effect of the drug being tested, and not due to chance or other variables.
Excluding a control group from an experiment could mean that the results could be misleading, inconclusive, or unreliable. While including a control group in experimental design might seem more difficult, it's an integral part of ensuring the validity and integrity of the experiment data and findings.
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which of the following is the best way to address this problem
To address a problem in design and interface, one should define the problem, utilize problem-solving strategies and tools, and methodically work through solutions. An analytical approach to design challenges in Computers and Technology enhances user interaction and satisfaction while preventing future issues.
Explanation:Addressing design and interface challenges can often be approached methodically through steps and utilizing the right tools. Firstly, identify the core problem, which can include user interface issues, lack of intuitive design, or poor user experience. After pinpointing the problem, consider problem-solving strategies relevant to the field of Computers and Technology, such as:
Planning out the interface with a focus on simplicity and intuitionEngaging with tools that assist in interface design and usability testingSequentially approaching the problem-solving process, tackling one issue at a timeSeeking evidence-based methods to support your chosen approachEmploying a preventive mindset to avoid future issues by thorough testing and iterationBy adopting these strategies, you can ensure that the approach to addressing the problem is systematic and yields effective solutions that enhance the overall design and functionality of your product. A thoughtful, analytical approach to problem-solving in technology can improve user satisfaction and prevent recurring problems.
What controls a tropism?
A tropism is a turning toward or away from a stimulus in the environment. Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin.
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Answer: It is controlled by the sun. It grows like a normal plant does. A plant grows towards the sun.
Explanation: Plants always grow towards the sun unless somehow they die. The sun controls them.