Which statements accurately describe elements? Check all that apply. Elements are made up of two or more types of atoms. Elements are made up of only one type of atom. Each element has a unique chemical symbol. Elements can be identified by their atomic number. One element cannot be combined with another element.

Answer

Well, this should be changes in the temperatures of the Earth

Explanation

A study in climatic changes over a period of 5 years should first observe how the temperature is balanced on Earth as a factor to determine the amount of energy entering and exiting the Earth. The elements of study should cover differences in the amount of energy reaching the Earth, differences observed in the reflectivity of the atmosphere and surface of the Earth and the greenhouse effect

Answer:

A

Explanation:

Final answer:

All living things use nitrogen to create amino acids, proteins, and nucleic acids. Nitrogen in the atmosphere is unusable for most organisms until it is fixed by certain microorganisms into compounds like nitrates or ammonia. Plants absorb these compounds and are then consumed by animals, passing the nitrogen through the food chain.

Explanation:

All living things use nitrogen to synthesize important biological molecules necessary for life. Nitrogen is critical for the production of amino acids, which are the building blocks of proteins, as well as nucleic acids such as DNA and RNA. While the atmosphere is approximately 79% molecular nitrogen (N2), this form of nitrogen is largely inaccessible to most organisms because they are unable to break the strong triple bond that N2 molecules possess.

Therefore, the nitrogen must be 'fixed' into a more usable form, such as nitrates or ammonia. This nitrogen fixation is performed by certain microorganisms, including those in the species Rhizobium, which are found in root nodules of legumes, and cyanobacteria present in soil and water environments. Once nitrogen is fixed, plants can absorb it and incorporate it into organic compounds. Herbivores and carnivores then obtain their necessary nitrogen by consuming plant material or other animals.

Life is classified in many levels from less specific to more specific:

Domain (bacteria, archaea, eukaryotes)

Kingdom

Phylum

Class

Order

Family

Genus

Species

The domains 'contains' the most number of organisms, species contain the least number of organisms.

Answer:

Species

Explanation:

The highest taxonomic category is domain followed by kingdom, phylum, class, order, family, genus and species. Among this, being the highest category, domain includes maximum number of organisms. On the other hand, being the lowest taxonomic category, species would include least number of organisms.  

Example: Domain “eukarya” includes all the eukaryotic organisms while species "sapiens" includes only present day human beings.

The answer is B. Natural Gas.

Answer: Oil

Explanation:

The united states is the leading producer of the crude oil and gas and holds more coal reserves as compared to the other countries.

The crude oil production is accounted to be largest in the United States which accounts for more than 10.9 million barrels per day.

This is a huge number which is not been expected from any of the other countries. The United states is the leading country when it comes to fossil fuels.

It would be Interphase, Prophase, Metaphase, and Anaphase

Answer:

A, C, and E

Explanation:

The answer is; Basalt rock

This type of rock is dark-colored due to the high content of magnesium and iron from the lava that forms it. Extrusive basalt rocks are fine-grained due to the rapid cooling of lava on the earth's surface. The basaltic lava is usually of low viscosity to the low silica content. Therefore , this lava flows greater distances before cooling. Basalt comprises approximately 90% of volcanic rocks on earth.

Answer by YourHope:

Hi! :)

Asexual reproduction produces offspring that are genetically identical to each other and to the parent.

:)

1. A

2. B

3. A

I am pretty sure this is correct

The two processes that are most responsible for the decrease in the height of the Appalachian Mountains include weathering and erosion.

The statement that explains why earthquakes occur more frequently in California than in Massachusetts is due to the fact that California is located on the boundary of two crustal plates, but Massachusetts is not.

The feature that forms when an oceanic plate has been moving over a hot spot for millions of years is that volcanoes form as lava erupts through the oceanic plate.

It should be noted that erosion and weathering reduce the height of rocks and this can lead to a decrease in the height of the Appalachian Mountains.

In conclusion, the correct options are A, B, and A.

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Answer:

DNA - Deoxyribonucleic acid, a macro molecule which has all the hereditary data or information in many living beings.

Function- DNA plays an important role in the production of proteins, along with the metabolism, and reproduction of the cells.

Explanation:

Structure of DNA:

Deoxyribonucleic acid, a macro molecule which has all the hereditary data or information in many living beings.

DNA plays an important role in the production of proteins, along with the metabolism, and reproduction of the cells.

The image is a simplified representation of a short DNA molecule, with deoxyribose sugar molecules in orange, linked to phosphate molecules through a special type of covalent linkage called the phosphodiester bond.

Each nitrogenous base is represented by a different color – thymine in purple, adenine in green, cytosine in red and guanine in blue.

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The correct answer is: D. The chromosomes do not pull apart during cell division and the result is a cell that has double the number of chromosomes than it would normally have.

Colchicine is alkaloid produced by many plants and it is mitotic inhibitor. Colchicine inhibits the micro tubules to assemble to form spindle fibers, so consequently, chromosome segregation and the cell division are arrested at metaphase.

Option D) is correct. 'The chromosomes do not pull apart during cell division and the result is a cell that has double the number of chromosomes than it would normally have. '

Researchers and breeders utilize colchicine-induced polyploidy to create new plant varieties with improved characteristics, demonstrating its role in agricultural and biological research.

In plant cells, treatment with colchicine results in cells with multiple sets of chromosomes, which can have practical applications in plant breeding and genetic research.

Polyploidy induced by colchicine can produce plants with desirable traits such as larger flowers or fruits, increased vigor, or enhanced resistance to diseases.

Answer:- The three forms of nitrogen in an aquarium are

1. Nitrate NO3-

2Nitrite NO2-

3. Ammonia NH3

Explanation:

Thus, in this nitrogen cycle we can see that there are three different forms in which nitrogen is present- ammonia, nitrate and nitrite.

Answer:

pharyngeal slits

Explanation:

Ans.

The Che proteins (chemotaxis proteins) are cytoplasmic proteins that play an important role in signal transduction pathways between the repellent or attractant and flagellar motor switch of a bacterium. Bacterial cell membranes contain different chemoreceptors for different attractants and repellents.

When a repellent or attractant binds with a chemoreceptor, stimulation of signal-transduction pathway occurs.  It sends a signal to the cytoplasmic domain of receptor, which interacts with Che proteins, present at cytoplasm. The rate of auto-phosphorylation decreases when an attractant binds with receptor, while the rate of auto-phosphorylation increases when an attractant binds with receptor.

Thus, 'the attractant enhances smooth swimming and counterclockwise rotation towards the chemical source, which repellent enhances tumbling clockwise rotation away from a chemical source.'  

Terrain this is the answer lat me know if i am wrong

The alligators in the mangrove forest will receive a portion of the 500,000,000 pounds of biomass produced by the phytoplankton in the food web.

To determine how much biomass the alligators in the mangrove forest will receive, we need to follow the energy flow in the food web. Phytoplankton, as primary producers, produce 500,000,000 pounds of biomass. The energy from the phytoplankton is then passed on to primary consumers, secondary consumers, and so on. As apex predators, the alligators will receive the biomass from all the trophic levels below them. The exact amount will depend on factors such as energy transfer efficiency between trophic levels, but the alligators will receive a portion of the 500,000,000 pounds of biomass.

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Question: What are linked genes?

Answer: genes on the same chromosome that are inherited together

Explanation: this is because these genes are not inherited by themselves

question answered by

(jacmorris04)

Linked genes are genes on the same chromosome that are inherited together during cell division because they are located closely together. These genes often lead to unique patterns of inheritance.

Linked genes are genes that are located on the same chromosome and thus are likely to be inherited together during the cell division process. This is because they are situated so close to one another on the same chromosome that they do not separate independently, a key tenet of Mendelian genetics. Because of this, linked genes often show genetic traits or phenotypes that violate the principle of independent assortment, leading to unique patterns of inheritance.

For example, in fruit flies, the gene for eye color and the gene for wing size are linked genes. This means that if a parent has red eyes and large wings, their offspring are much more likely to also have red eyes and large wings because these traits are often inherited together due to the close proximity of their respective genes on the chromosome.

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A taller plant can reach above the shorter ones and receive more sun light,it could even block sunlight going to other plants and reduce it competition.

Hope this helped!

Being taller gives plants a competitive advantage primarily through increased access to sunlight, enabling more photosynthesis, and through broader seed distribution.

In the world of plants, having height gives a competitive advantage in several important ways.

1. Sunlight: The taller a plant is, the more accessibility it has to sunlight, which is essential for photosynthesis. In dense areas, taller plants can outcompete shorter plants for sunlight.

2. Distribution of Seeds: Being taller often enables plants to spread their seeds over a larger area, promoting their species' growth elsewhere. This is particularly the case for plants whose seeds distribute by wind.

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The process is habitat fragmentation.

Notwithstanding causing direct mortality, roads constructed between the forests can have various aberrant effects which lead to condition called habitat fragmentation. This can result from either creature not having the option to go across the road without being hurt or through shirking of the road.

For instance, a few snakes have been appeared to pivot and not go across the road when they experience it. Some creatures keep away from the outside of the road in any event, when there are no vehicles driving on it.

Flying creatures that normally fly short good ways starting with one tree then onto the next may likewise be reluctant to fly over a huge open space, which confines their developments crosswise over roads.  

It would be Anaphase of mitosis since its the separation between the two chromosomes while the two chromatids on each side move to opposite directions. -maclittleseed

Hemoglobin consists of protein subunits (the "globin" molecules), and these proteins, in turn, are folded chains of a large number of different amino acids called polypeptides. The amino acid sequence of any polypeptide created by a cell is in turn determined by the stretches of DNA called genes.

Final answer:

Hemoglobin is a protein molecule with a heme group that contains iron, essential for oxygen transportation in the blood.

Explanation:

Hemoglobin is a complex protein molecule found in red blood cells, which is crucial for transporting oxygen throughout the body. It consists of four subunits, each made up of a polypeptide chain called globin and a heme group. The heme group contains an iron ion (Fe²⁺) that can bind to oxygen molecules. When all four iron ions in a hemoglobin molecule are bound to oxygen, the blood appears bright red, indicative of oxygenated arterial blood. Hemoglobin's ability to carry oxygen is due to its iron centers, which can only transport oxygen when in their reduced Fe²⁺ state, as oxidation to Fe³⁺ prevents the binding of oxygen.

The mantle and core of the earth are still hot because of the pressure of the overlying earth layers. The deeper the layer the hotter it is due to higher pressure, in lieu of the fact that temperature and directly proportional. In addition, some of the heat from the time the earth was formed is still trapped inside the earth and nuclear decay of radioactive elements in the regions ensure the earth does not cool.

The mantle and outer core of the earth are liquid while the inner core is solid. The former  layers are liquid because the temperatures in these regions have surpassed the melting point of the elements that make up the layers. However, the inner core remains solid due to the enormous pressure in the region. The pressure is so high it prevents the element in the region from melting.  

Protein structures. The sequence of amino acids in a protein is called its primary structure. Within a chain the atoms are held together by covenant bonds. Each protein has its own characteristic sequence of amino acids.

www.rsc.org/Education/Teachers/Resources/cfb/proteins.htm

No, it is not possible to have thunder without lightning. Thunder is a direct result of lightning.

So the answer is False

I hope this useful

No, it is not possible to have thunder without lightning. ... A typical cloud-to-ground flash lowers a path of negative electricity (that we cannot see) ... one-millionth of a second - so the human eye doesn't see the actual formation of the stroke.

The Combined DNA Index System (CODIS) is the United States national DNA database created and maintained by the Federal Bureau of Investigation. CODIS consists of three levels of information; Local DNA Index Systems (LDIS) where DNA profiles originate, State DNA Index Systems (SDIS) which allows for laboratories within states to share information, and the National DNA Index System (NDIS) which allows states to compare DNA information with one another.

Answer:

CODIS stands for Combined DNA Index Systems and is a computer program that stores the DNA Fingerprint of convicted criminals and missing persons. This program is very useful in forensic science.

Explanation:

CODIS is a computer program maintained by the FBI, which operates databases across the country. These databases contain more than five million profiles. CODIS covers several different indices.

CODIS uses algorithms to compare 13 different locations in STRs, plus one that determines the gender of the person in question. The system has rules and safeguards to protect the privacy of people in the database. Algorithms that point to positive results - which must be confirmed by an analyst - can provide clues to the police or even identify a possible criminal. The downside of using CODIS is that it only covers the profiles it includes - and there are over a million profiles waiting to be included in the system.

Cell Membrane Semi-permeable membrane made of phospholipids that acts as a barrier between inside and outside of the cell.

Cytoplasm The fluid, cytoskeleton, and organelles inside a cell.

Nucleus Contains DNA and control's the cell's activity.

Cell organelles that have their functions listed correctly are as follows:

"Chloroplast, Cytoplasm, Vacuole Mitochondria, Cell membrane and Cell wall"

1.Chloroplasts:

Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process.

2. Cytoplasm:

Cytoplasmic organelles are "little organs" that are suspended in the cytoplasm of the cell.

3. Vacuole:

In plant cells, vacuoles help maintain water balance.

4. Nucleus:

It controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes.

5. Nuclear membrane:

It serves to separate the chromosomes from the rest of the cell.

6. Mitochondria:

It is involved primarily in cell respiration and energy production.

7. Cell membrane:

It provides protection for a cell.

8. Cell wall:

It provides structural strength and support, and also provide a semi-permeable surface for molecules to pass in and out of the cell.

So, in the given table the organelle that represents correct functions are:

"Chloroplast, Cytoplasm, Vacuole Mitochondria, Cell membrane and Cell wall".

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answer is - Fictional heating

Option b is correct. The small circular piece of bacterial DNA used for inserting a foreign gene is called a plasmid. It is a vehicle used in molecular cloning for replicating and expressing the inserted gene in bacterial cells.

Scientists often use bacteria to produce recombinant DNA, which in turn is used to create multiple copies of genes or express proteins. When introducing a foreign DNA into bacteria, the DNA fragment is first inserted into a plasmid. A plasmid is a small circular DNA molecule that can replicate independently of the bacterial chromosomal DNA. These plasmids are also known as vectors as they can carry foreign DNA from one organism to another, and, thus, used as a vehicle for gene cloning. Once inserted, the foreign DNA is replicated along with the rest of the bacterial DNA through the division of the bacterial cells.

Answering the student's question, the small circular piece of bacterial DNA, separate from the main chromosome, into which a foreign gene is inserted is called a plasmid. Therefore, the correct option is B. Plasmid.

false please mark me brainliest

The energy in a polysaccharide is stored in the high energy carbon-hydrogen covalent bonds within the monomers. The breaking of these bonds is what is responsible for releasing energy used to generate ATP.

THE ANSWER IS: C