2. Define biomagnfication.

Random mutation is not an mechanism of evolution .

Five important factors for evolution mechanism are Natural Selection, genetic drift, gene flow, mutations, and non random mating. Through these process members of a population differs greatly in their traits.

Natural selection is the most important mechanism of evolution, other evolutionary mechanisms can also change the frequencies of traits in populations. These include mutation, genetic drift and migration. Natural selection have 5 basic and major components These are Variation (individual have variation in appearance and behavior ), Inheritance( traits are continuously passed on from parent to offspring), Selection, Time and Adaptation.

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Answer:

The potential environmental impacts associated with solar power—land use and habitat loss, water use, and the use of hazardous materials in manufacturing—can vary greatly depending on the technology, which includes two broad categories: photovoltaic (PV) solar cells or concentrating solar thermal plants (CSP).

Explanation:

Answer:

■. The club mosses, or lycophyta.

■. The current hypothesis for the origin of microphylls is called the enation theory.

■. They are the earliest group of seedless vascular plants.

■. They dominated the landscape of the Carboniferous period.

■. Club mosses are the most primitive type of seedless vascular plants.

■. clubmosses, firmosses, and quillworts — these are the some common examples of Lycophyta.

■. Extinct lycophytes like Lepidodendron and Sigillaria grew into tall trees.

■. Lycophytes, also known as ‘ferns allies’.

■. They are a clade of vascular plants similar to ferns, but have unique leaves called microphylls.

■. They usually have pinnately compound leaves.

The fluid portion of the blood is Plasma. The correct answer is (d).

Blood is made up of four main components: plasma, red blood cells, white blood cells, and platelets. Among the four major components, plasma is the most abundant, accounting for approximately 55% of the total volume of blood.

The term “plasma” refers to the liquid component of blood, as well as the complex mixture of proteins and other substances that are dissolved or suspended within the fluid.

Plasma is a clear, yellowish liquid that is mostly made up of water, but it also contains a wide range of dissolved substances such as electrolytes, nutrients, gases, hormones, and waste products.

In addition to the dissolved substances, plasma also contains proteins such as albumin, globulins, and fibrinogen. These proteins play a crucial role in maintaining the body’s fluid balance and transporting other substances throughout the body.

Blood plasma plays an important role in maintaining the body’s homeostasis. It helps to regulate the pH, osmotic pressure, and overall volume of the blood. It also carries vital nutrients and oxygen to the cells and removes waste products and carbon dioxide from the body.

Additionally, plasma contains antibodies and other components of the immune system that help to protect the body against infections and diseases.

In summary, Plasma is the correct answer and is an essential component of the blood that plays a critical role in maintaining the body’s overall health and well-being.

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Answer:

hi

Explanation:

Key terms

TermMeaningSymbiosisInterspecific interaction in which two species live together in a long-term, intimate associationMutualismA symbiotic relationship between two species in which both partners benefitCommensalismA symbiotic relationship between two species in which one benefits and the other is unaffected

Answer:

The answer to the question is a

The acid growth hypothesis in an actively growing shoot is Auxin-activated proton pumps lower the pH of the cell wall, which breaks bonds and makes the walls more flexible. the correct option is B) .

This hypothesis states that auxin-activated proton pumps in the plasma membrane and tonoplast lower the pH of the cell wall, which breaks bonds between the cell wall and makes it more flexible, allowing for increased cell elongation. This increases cell expansion and cell growth.

The acid growth hypothesis states that auxin triggers the growth of plant cells by increasing their acidity levels. Auxin leads to an increase in hydrogen ions (H+) outside of the cell, as well as the activation of proton pumps in the plasma membrane and tonoplast. As a result, the pH of the cell wall is reduced, causing the cell wall to loosen up and the cell to expand. This enables the cell to develop and grow longer. This hypothesis also states that the action of proton pumps is responsible for creating an electrical gradient and a proton motive force. In essence, auxin causes the expansion of the cell wall, which results in the development of the cell.

Therefore, Option B) Auxin-activated proton pumps lower the pH of the cell wall, which breaks bonds and makes the walls more flexible is the correct answer.

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The process you are referring to is called phagocytosis, which is a fundamental process in cell biology that allows cells to engulf and digest unwanted or foreign materials.

Phagocytosis occurs in various types of cells, including white blood cells, which play a crucial role in the immune system.
The process of phagocytosis involves several steps. First, the cell recognizes the unwanted body or particle by its surface receptors. Then, the cell membrane extends around the particle, forming a phagosome. Once the particle is fully enclosed, the phagosome fuses with lysosomes, which contain digestive enzymes that break down the particle into small molecules that can be used by the cell.
Phagocytosis is essential for maintaining proper cellular function and defending against infection and disease. It is also involved in the removal of dead cells and debris from tissues. However, in some cases, phagocytosis can go awry, leading to the destruction of healthy cells and tissues. In summary, phagocytosis is a crucial process in cell biology that helps maintain a healthy body by removing unwanted or foreign materials.

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Answer:

semiconservative replication

Answer:

the DNA is sperm very very vruerh4ieieee

Returns 99% of the water filtered from the glomerulus to the blood.

What is tubular reabsorption ?

It is the process in which solutes and water moves out of the filtrate and then again in the bloodstream .

It is the second major step in urine formation .

During this , they are absorbed second time because of that the term reabsorption is used .

Hence ,tubular reabsorption returns 99% of the water filtered from the glomerulus to the blood .

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A tarsier is a species of primate discovered in 1997 that is only 10 cm long.

This animal has distinctive characteristics that set it apart from other primates, such as its widely spaced nostrils that open outward and its long prehensile tail. Its nostrils help it to locate prey more accurately and its tail allows it to hang from branches, trees, or other surfaces.

The tarsier also has huge eyes, allowing it to see in very low light conditions. Unlike other primates, the tarsier is primarily carnivorous and its diet includes insects, frogs, lizards, and small birds.

It is found in the forests of Southeast Asia, primarily in the Philippines and Indonesia. The tarsier is an endangered species and its main threats are habitat destruction and hunting. Conservation efforts are in place to protect this unique species.

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Answer:

1) opposite

2) germ cells

3) S phase or interphase (depending on what you have been taught)

Explanation:

Active transport pumps stuff against their concentration (from low to high) gradient (using ATP). This direction is opposite to what diffusion does because diffusion moves stuff down their concentration gradient (from high to low).

Germ cells undergo meiosis to make gametes.

For 3, answer can be S phase or interphase (depends on what you have been taught). Interphase is where cell spends 90% of its time. this is where dna doubles due to replication (S phase is a specific phase inside of interphase where DNA actually replicates)

The statement is false.

A molecule undergoes oxidation when it loses electrons (e-) or energy and turns positively charged.

Depending on how many electrons are lost during oxidation, the molecule's oxidation number changes.

The process of reduction, which is the reverse of oxidation, involves a molecule gaining energy and electrons. Oxidation-reduction or redox process is the name given to them collectively.

Unsaturated fatty acids must undergo cis-trans isomerization and epimerization in order to be oxidized, which calls for enzymes that are not required for the oxidation of saturated fatty acids.

Thus from the above conclusion we can say that the oxidation of unsaturated fatty acids does not requires exactly the same group of enzymes as the oxidation of saturated fatty acids. Hence, the statement is false.

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Answer: black

Explanation:

Yes

Answer:

wow it is blank

Explanation:

Answer:

On your Android phone or tablet, open a spreadsheet in the Google Sheets app. Select the (stuff) you want to include in your chart.

Tap Insert. Chart.

Optional: To choose a different chart, tap Type. Then, choose an option.

Tap Done .

Explanation:Hope this helps!

Answer: im trying to do the same thing but on pc :/

Explanation:

The elevated PCB levels in the Last Frontier region may be attributed to a clandestine illegal dumping operation, where an unidentified entity has been disposing of PCB waste covertly. To test the hypothesis of an illegal dumping operation causing the observed increase in PCB levels, Conduct thorough sampling, identify potential dumping sites, investigate local industries, conduct stakeouts, trace the source, and take legal action and prevention measures.

The observation described above, which is detailed in the "PCB in the Last Frontier: A Case Study on the Scientific Method" file, can be explained by the presence of a clandestine illegal dumping operation in the Last Frontier region. This explanatory story suggests that an unidentified entity has been secretly disposing of PCB (polychlorinated biphenyl) waste in the area, leading to the elevated levels of PCBs detected in the environment.

1. Conduct thorough sampling: Collect samples from various locations in the Last Frontier region, including soil, water, and air samples, to quantify and compare the PCB levels. This will help establish a baseline for normal PCB concentrations in the area.

2. Identify potential dumping sites: Analyze the collected samples to identify hotspots of PCB contamination. Use geospatial mapping techniques and data analysis to identify areas with significantly higher PCB concentrations.

3. Investigate local industries: Examine nearby industrial facilities, waste disposal sites, and manufacturing plants to determine if any of them are involved in handling or producing PCBs. Gather information on their waste management practices and compliance with regulations.

4. Stakeout and surveillance: Set up surveillance equipment and conduct stakeouts in suspected areas to catch any illegal dumping activities in action. This may involve coordinating with law enforcement agencies and environmental protection organizations.

5. Trace the source: Analyze the collected PCB samples to determine the specific composition and characteristics of the PCBs. This information can help trace the origin of the PCBs and potentially identify the responsible party.

6. Legal action and prevention: If evidence of illegal dumping is discovered, report the findings to the appropriate authorities for legal action. Additionally, recommend stricter regulations, increased monitoring, and public awareness campaigns to prevent further illegal dumping incidents.

By following these steps, it is possible to investigate and test the hypothesis of an illegal dumping operation, ultimately providing evidence to support or refute the explanatory story behind the observed increase in PCB levels in the Last Frontier region.

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It is important to prepare dilutions of a stock solution for several reasons:

Overall, preparing dilutions of a stock solutionis an important step in many scientific experiments and procedures, as it allows for more accurate, safe, and convenient handling of substances.

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Answer:

what is question ???????

Answer:

• Mitochondria need glucose to produce energy for the body.

Hope it's helpful.

Electronegativity.

If the difference in electronegativity for the atoms in a bond is greater than 0.4, we consider the bond polar. If the difference in electronegativity is less than 0.4, the bond is essentially nonpolar.

Answer:

light dependent reaction occurs in grana produces ATP, release oxygen and produce glucose. while light independent reactions occur in stroma, fixes carbon dioxide. Explanation: Photosynthesis is a process that converts light energy into chemical energy in a multi protein complex called a photo system.

Answer:

Franklin took Photo 51 after scientists confirmed that DNA contained genes. Maurice Wilkins, Franklin´s colleague showed James Watson and Francis Crick Photo 51 without Franklin´s knowledge. Watson and Crick used that image to develop their structural model of DNA.

Explanation:I took that but if ya read it you will know what it is trust me.

Protein B, which is 50kD in size and rod-shaped, will elute last out of the gel filtration column.

Supporting answer: Gel filtration chromatography, also known as size exclusion chromatography, separates proteins based on their size. The principle behind this technique is that smaller molecules can enter the pores of the gel matrix more easily, resulting in slower elution, while larger molecules pass through the column more quickly.

In this case, Protein B is both 50kD in size and rod-shaped. The rod-shaped structure implies that it has a more elongated shape compared to the spherical proteins. Due to its elongated structure, Protein B is likely to have a larger hydrodynamic radius (size as perceived by the gel matrix) compared to Protein A, even though they are both 50kD in size.

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30S ribosome subunit, N-formyl methionine-tRNA, 50S subunit. All aminoacyl-tRNAs use the same location as a decoding site, and formyl methionyl-tRNAF appears to attach there first.

This entrance point must be mostly on the 30S ribosome particle in tRNA, although it may also extend to the 50S particle in certain places. As t-RNAs begin transcription, ribosomes start translation. Translation and transcription are hence closely related biological activities. Of the four stages of protein biosynthesis, translation initiation is the most tightly controlled and rate limiting stage.

A big 50S and a tiny 30S component make up the bacterial 70S ribosome. The aminoacyl (A), peptidyl (P), and exit (E) sites are three tRNA binding sites that are present in this protein.

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Answer:

more hydrogen ions and ph lower than 7

The effect is that the galaxy's spiral arms will disappear, and so will our supermassive black hole.

A galaxy is a collection of stars, stellar remains, interstellar gas, dust, and dark matter that are gravitationally bound together. The word comes from the Greek word galaxias, which means "milky" and refers to the Milky Way galaxy, which houses the Solar System. Galaxies were created when enormous clouds of gas and dust collapsed under the force of their own gravitational pull, allowing stars to form.

Our galaxy moves in relation to other galaxies in the universe in addition to the motions of Earth within the solar system and of our solar system within the Milky Way Galaxy. These motions are somewhat random for nearby galaxies. For instance, the Milky Way Galaxy is heading in the direction of the Andromeda Galaxy. On a larger scale, however, researchers have found that the universe as a whole is expanding, which over time is causing all collections of galaxies to drift apart.

In conclusion, the spiral arms of galaxies and our supermassive black hole will vanish.

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The influence of polymer structure on the interactions of cationic polymers with DNA and the morphology of the resulting complexes has a significant effect on the delivery of nucleic acids into cells. The type of cationic polymers and their concentration, the polymer structure, molecular weight, and degree of branching, as well as their interactions with DNA, all play a significant role in the formation and stability of the resulting polyplexes.

The morphology of polyplexes varies with polymer type and architecture, and this plays a vital role in gene delivery's efficacy and toxicity.

Among the most extensively investigated polymers are linear poly(ethyleneimine) (PEI), branched PEI, and poly-L-lysine (PLL).

PEI is a highly branched cationic polymer with primary, secondary, and tertiary amines, making it an efficient gene delivery vector.

In addition to PEI, PLL has been extensively investigated as a gene carrier.

It is a cationic polymer with lysine residues that can interact with negatively charged DNA.

Polymer concentration, molecular weight, degree of branching, and degree of protonation are all critical variables affecting the morphology of the polyplexes.

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Answer:

Hi hope this is right

Explanation:

Echinoderms have a spiny endoskeleton. They have radial symmetry as adults but bilateral symmetry as larvae. Echinoderms have a unique water vascular system with tube feet. This allows slow but powerful movement.

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The top level of an energy pyramid has the fewest organisms

the highest trophic level would have the lowest variety of organisms. that is because as the trophic degree goes higher, the quantity of energy decreases. An organism in the fifth trophic level would only get hold of 0.01% of the strength this is produced by using the organisms inside the first trophic stage (the producers). round 90% of power is lost as it transfers from one trophic stage to any other. The minimal quantity that the 5th trophic degree receives prevents an growth in biomass. As such, organisms inside the better trophic ranges want to devour a huge amount of meals if you want to advantage huge amounts of strength.

In assessment, an organism inside the first trophic stage could have 100% energy. Organisms within the first trophic level include the autotrophs, including plants. vegetation are able to synthesize their personal meals, which they then use to synthesize power, through the procedure of photosynthesis.

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