Cells involved in immune responses have receptors that are highly specific to molecules on the surfaces of bacteria, viruses, and some cancer cells. this is known as:_________

Answer:

one is made of silk and one is made from branches and anything to keep it together and for padding

Explanation:

the spider makes the webs out of silk and it traps anything that goes through it. the birds make the nests from branches and litter.

The relationship is between the nest and the bird, or between the spider and the web functionally similar or analogous characters as nest provides a home to birds and for a spider, the same is true.

Similar character of an organism can be either homologous or analogous where Homologous structures have same embryonic origin while analogous organs are functionally similar.

Analogous structures share a common evolutionary origin,  Analogous is having the same or corresponding roles but do not share a common evolutionary origin, the bones in the front flipper of a whale are homologous to the bones in the human arm.

Analogous structures are from wings in flying animals like bats, birds, and insects, to fins in animals. Plants and other organisms can also show analogous structures like sweet potatoes and potatoes, which have the same function of food storage.

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Answer:

A

Explanation:

Each nucleotide in a DNA sequence is made up of:

The pentose sugar is even shaped like a pentagon, so when in doubt simply count the sides!

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Answer:

Explanation:

The hydrogen that is used in Stage 2 of photosynthesis comes from the water molecules that were originally split in Stage 1. During Stage 1, which occurs in the thylakoid membranes of the chloroplasts, water molecules are broken down into oxygen, protons (H+), and electrons (e-). The oxygen is released into the atmosphere, while the protons and electrons are carried by the electron carrier NADP+ to the stroma of the chloroplasts, where they participate in Stage 2 of photosynthesis, also known as the Calvin cycle or light-independent reactions. In Stage 2, the hydrogen atoms from NADPH are combined with carbon dioxide to create carbohydrates using energy from ATP produced in Stage 1. So, the hydrogen that is used in Stage 2 of photosynthesis ultimately comes from water molecules that were originally split during Stage 1.

Explanation:

The planets in our Solar System are believed to have formed from the same spinning disc of dust that formed the Sun. This disc, called the solar nebula, was composed mainly of hydrogen and helium, but also had other elements in smaller proportions.

According to Harry Harlow's research on infant monkeys raised with two types of artificial mothers, infant monkeys are more likely to cling to the cloth mother when frightened.

In Harry Harlow's famous research (experiment), he presented infant monkeys with two surrogate mothers: one made of wire and one covered with soft cloth.

Although the wire mother provided a source of food, the infant monkeys spent significantly more time clinging to the cloth mother, especially when they were scared or stressed. This finding suggested that the need for comfort and contact comfort was more important to the monkeys than the provision of basic nourishment.

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they needed healthcare

Explanation:

they had to spend more on health care and food and all that's why they lost more money

Pili are made of the protein pilin, which is the first option, as pili are short, hair-like appendages that extend from the surface of some bacteria. These structures are primarily composed of the protein pilin, which forms a helical filament that gives the pili their characteristic shape.

The function of pili varies depending on the type of pili and the bacterial species that produce them. Some pili are involved in bacterial adhesion, allowing bacteria to attach to surfaces such as host cells or environmental substrates. Other pili are involved in bacterial motility, allowing bacteria to move around in their environment. Pili can also play a role in bacterial conjugation, which is the transfer of genetic material from one bacterial cell to another. The structure and composition of pili can vary depending on the bacterial species and the function of the pili.

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The endocrine system regulates our body by secreting hormones into the blood or to surrounding cells. Major organs that are part of the endocrine system are the Pineal gland, Pituitary Gland, Thyroid, Thymus, Adrenal Gland, and the sex organs, ovary, and testes.

ANSWER: None of the choices are correct.

1. DNA replication produces two identical DNA molecules, called SISTER CHROMATID(S), which separate during mitosis.

2. After chromosomes condense, the CENTROMERE(S) is the region where the identical DNA molecules are most tightly attached to each other.

3. During mitosis, microtubules attach to chromosomes at the KINETOCHORE(S)

4. In dividing cells, most of the cell's growth occurs during INTERPHASE

5. The MITOTIC SPINDLE(S) is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division.

6. During interphase, most of the nucleus is filled with a complex of DNA and protein in a dispersed form called CHROMATIN

7. In most eukaryotes, division of the nucleus is followed by CYTOKINESIS, when the rest of the cell divides.

8. The CENTROSOME(S) are the organizing centers for microtubules involved in separating chromosomes during mitosis.

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Full Question:As in most areas of biology, the study of mitosis and the cell cycle involves a lot of new terminology. Knowing what the different terms mean is essential to understanding and describing the processes occurring in the cell.

According to the graph, the blood sugar level for person B is 130 mg/dL after 6 hours of eating meal.

The blood sugar level is highest just after eating the meal but with the passage of time, the concentration of blood sugar level decreases due to absorption by the body. One hour after eating the meal, the blood glucose level is slightly decreases but after 6 hours, the blood glucose level tends to very low due to more consumption of the body or storing by the body in different parts.

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Answer:

A: Cytoplasm

Explanation:

The correct answer is: C. Carbon offsets
Paying to plant trees because you use carbon in your daily life would be an example of carbon offset. Carbon offsets allow individuals or companies to compensate for their carbon emissions by investing in projects that reduce or remove carbon from the atmosphere, such as reforestation efforts.

By planting trees, carbon is absorbed from the atmosphere through the process of photosynthesis, helping to offset the carbon emissions produced by human activities. This is an example of a strategy that can be used to reduce carbon emissions and move towards a more sustainable future.
When you pay to plant trees because you use carbon in your daily life, you are engaging in carbon offsets. This means that you are attempting to balance out your carbon emissions by supporting projects, such as tree planting, that remove or reduce carbon dioxide from the atmosphere. Planting trees helps to absorb carbon dioxide, which contributes to mitigating the effects of climate change. By investing in carbon offsets, you are taking a step towards reducing your overall carbon footprint and promoting sustainability.

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Answer:

It is located in the nucleus

Explanation:

Answer:

Explanation:

nucleus

The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA.

Daphnia is an acuatic microarthropod which depends on the environment to perform its metabolic tasks. Arthropods are poikolotermic, which means their body temperature depends in the environment's temperature. Considering the above, it would be important to measure the following variables for some period fo time, let's say 90 days: 1) temperature, 2)salinity, 3)organic matter and 4) pH. Number of days is important, so we could give Daphnia time to acclimate to its new environment. We should measure at least to points, in the beginning, to measure the immediate to response to the abiotic change, and at the end, to measure the effect of the measured variable in Daphnias heart.

The design could comprise treatments with normal values of this variables where Daphnia lives, and with a couple of extreme values (both upper and lower extremes. For example, imagine Daphnia uses to live in lakes with mean temperature of 19 C, then this would be the control case for temperature and you could also use 14 C and 24 C, as the treatments to explore the effects of temperature variation. In any case the choice of values should be informed by literature. For example with ongoing climate change, you could use the projected rises in temperature to explore how Daphnia would perform in those cases. After performing the individual variable assays (I mean, temperature fluctuates, the rest of parameters are hold the same). It would be pretty informative to combine variables. Let's say, how could Daphni behave with warming and acidic pH. Another example, how could Daphnia behave with warming and organic matter enrichment/oligotrophy (poor concentration of nutrients). In this way you could asses more realistic scenarios, since nature has these and much more variables playing simultaneously. According to the problem, heart rate is the variable of interest (that is of our response variable), therefore we should measure heartrate in all the conditions mentioned above. As all organismis search to keep their metabolism/functions (that includes heart rate, among many other) with major changes, we should see some fluctuations in the begginng of the assay, but their will tend to stabilize if Daphnia is able to cope with the altered environment conditions.

Using dams as freshwater sources can damage existing habitats.

What is the Environmental Impact of dams?

Freshwater habitats are severely harmed by dams, which has an impact on both humans and the environment. Dams, canals, and diversions already stop the flow of 60% of the world's major rivers. Dams and the infrastructure they are associated with, including irrigation systems, are a major cause of the disappearance of numerous freshwater habitats and species.

Dams cut off rivers from their marshes and floodplains. Freshwater ecosystems may suffer catastrophic harm. They affect fish migration patterns and inundate riparian habitats such as waterfalls, rapids, riverbanks, and wetlands. Dams alter the diversity and productivity of species by impeding the natural flow of sediment to deltas, estuaries, flooded forests, wetlands, and inland seas. Water quality is impacted by dam activities as well. Retention of water and sediment has an impact on the capability of rivers to handle waste and the quality of the water (the ability to break down organic pollutants). This might result in the creation of harmful hydrogen sulfide gas, further lowering the quality of the water.

Hence, the answer is, D. Dams can damage existing habitats.

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Answer:

It is the letter/option: B

Answer:

B

Explanation:

Meiosis results in 4 haploid cells, and mitosis results in 2 diploid cells.

Philippines has great diversity in natural resources. The country has diverse arable lands, rich in flora and fauna, extensive coastlines and rich mineral deposits.

30% of the land area is determined be geographically prospective by Philippine Mines and Geo-Sciences Bureau. 1.5% of the land area is covered by mining . The country has many different natural water forms, such as bays, rivers, lakes falls, gulfs, straits and swamps. Philippines has excellent natural harbours for ports like Manila Bay. Fertile land is the country's main source of livelihood. Rich, wide plains that are suitable for farming are found in the Cagayan Valley, Central Luzon, South western Bicol, Panay, Negros, Davao, Cotabato, Agusan and Bukidnon. Major crops that are grown are rice, corn, sugarcane, coconut, abaca and tobacco.

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If a 7mm thick plate had been poured, this would affect the size of the inhibition zones, because the inhibition area would be smaller as a greater thickness would require more drugs in the same area.

It is one of the simplest, most reliable and most used susceptibility methods in microbiology laboratories. Its basic principle is the diffusion of the antimicrobial on the surface of the agar, from a disk impregnated with the same antimicrobial.

With this information, we can conclude that if a 7mm thick plate had been poured, this would affect the size of the inhibition zones, because the inhibition area would be smaller as a greater thickness would require more drugs in the same area.

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Answer:

B

Explanation:

Answer:

b

Explanation:

Answer: the fulcrum

i don't know the other one

1) blue line: by the year 3000 the population will not have reached its carrying capacity. Orange line: by the year 3000 the population will reach its carrying capacity (K=11 billion individuals). Green line: by the year 2500 human population will reach its carrying capacity (K = 8 billion individuals). 2) water, food, and space availability. Natural disasters and uncontrolled human activities. 3) if we do reach carrying capacity we will keep growing in size until N>K, and then decrease.

Carrying capacity (K) refers to the maximum point at which the environment can support a growing population.

K is a constant. It coincides with the population size when the natality rate and mortality rate are equal to each other. This is the equilibrium point.

So when the population size exceeds K, carrying capacity makes the population decrease in size. This is because there are not enough resources for this population to survive.

The carrying capacity might be affected by different factors, known as limiting factors, which might be a result of the population density (for example, competition, predation, parasitism) or might be density-independent (human impact or natural disasters).

In the exposed graph,

1) Do you think Earth's population will reach carrying capacity?

It depends on the line we analyze,

It represents the highest predicted population growth.

There is no explicit carrying capacity point in this line since the curve has not reached a plane yet.

It seems that, by the year 3000, the human population will still be growing.

It represents the medium-predicted population growth.

The carrying capacity point seems around 11 billion individuals, which is where the curve has reached its plane.

This graph represents that by the year 3000, the human population will have reached its carrying capacity, and it will be in equilibrium.

It represents the lowest predicted population growth.

The carrying capacity point seems slightly higher than 8 billion individuals, which is where the curve has reached its plane.

This graph represents that by the year 2500, the human population will have reached its carrying capacity (8 billion individuals), and after that year it will decrease. By the year 3000 there might be around 7 billion individuals.

2) What might be some limiting factors?

Limiting factors:

3) What do you think will happen if we do reach carrying capacity?

When the human population reaches its carrying capacity, I believe there will be no control on population growth and resource use, so it will keep growing until N > K, and then it will need to obligatory decrease in size.

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Evolutionary processes and ecological processes can occur on similar time scales, and evolution by natural selection is often mediated by ecological phenomena, such as predation. Here option A is the correct answer.

Evolution and ecology are related fields of biology that are interconnected and affect each other. Evolutionary processes involve changes in the genetic makeup of populations over time, while ecological processes involve interactions between organisms and their environment.

These two processes can occur on similar time scales, as evolutionary changes can lead to ecological changes and vice versa. Furthermore, evolution by natural selection is often mediated by ecological phenomena, such as predation.

Natural selection is the process by which organisms with traits that are advantageous for survival and reproduction are more likely to survive and pass on their traits to the next generation. Ecological factors, such as predation, can select certain traits that confer survival advantages, such as speed, camouflage, or toxicity.

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Complete question:

Which of the following statements about evolution and ecology is true?

A - evolutionary processes and ecological processes can occur on similar time scales.

B - evolution by natural selection is generally not mediated by ecological phenomena (such as predation).

Answer:

1. Ligase  - 5. joins the Okazaki fragments together

(Ligase is involved in joining the okazaki fragments together by sealing the nicks of the DNA strand.

2. Helicase - 1. unwinds the DNA molecule

(Helicase separates the two DNA strands at the replication fork.)

3. Polymerase - 2. synthesizes the complementary daughter strands

(Polymerase synthesizes the complementary daughter strand by adding nucleotides to the DNA.)

4. Topoisomerase - 4. creates nicks ahead of the replication fork to relieve tension from unwinding

(The highly coiled DNA is relaxed by creating nick ahead of the replication fork in the phosphate backbone of DNA strands.)

5. RNA primase - 3. synthesizes RNA primer at the initiation point

(RNA primase synthesizes an RNA primer (short sequence of RNA).)

Explanation:

Answer:

B

Explanation:

Hybridization

Answer:

B

Explanation:

Answer:

Shows an inversely proportional relationship.

Explanation:

The Boyle's law belongs in the region marked X whereas the other circle belongs to Charles law. There is inverse relationship between the two circles or these two laws because in Boyle's law, temperature is constant while on the other hand, in Charles law pressure is constant instead of temperature. In Boyle's law, pressure of a gas is inversely with its volume whereas in Charles law, the volume of a gas is directly proportional to its absolute (Kelvin) temperature.

The taste of food is determined by a combination of factors such as the food's chemical composition, the individual's genetics, and their past experiences with that particular food.

When we eat food, our taste buds send signals to our brain, which interprets the signals as either pleasurable or unpleasant. Foods that contain a balanced combination of sweet, salty, sour, and bitter tastes are usually more desirable than those that lack a balance or are overwhelmingly strong in one taste.

                             Additionally, some individuals may have a genetic preference for certain tastes or textures. Past experiences with a food can also affect one's perception of its taste, as negative experiences such as food poisoning or childhood aversions can create a repulsive response. Ultimately, taste is subjective and can vary greatly from person to person.

Cultural influences: Cultural background and upbringing can affect the types of foods people find appealing or repulsive. Certain flavors or ingredients may be more common in one culture than another, and individuals may develop a preference for those specific tastes.

Basic tastes: Our taste buds can detect five basic tastes – sweet, salty, sour, bitter, and umami (savory). Foods with a desired taste often contain a balance of these basic tastes, while repulsive foods may have an overwhelming presence of one or more of these tastes.

In conclusion, the perception of a food's taste as desirable or repulsive depends on personal preferences, cultural influences, and the balance of the basic tastes detected by our taste buds.

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Answer:

matter

Explanation:

"In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings"

Answer:

In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings

Explanation:

It doesn't exchange matter

Answer:

Veins

1l carry blood from tissue of the body to the heart

2) are usually found closer beneath the skin

3) are less muscular then arteries

4) collapse if blood flow stops

arteries

1) carry blood back away from the heart to the tissue of the body.

2) found deeper within the body

3) are more muscular then veins

4) would generally remain open even if blood stops because of it's muscular structure.