Differentiate between prokaryotic cells and eukaryotic cells ​

In a food chain with 2,000 units of biomass among the primary producers, the amount of biomass expected among the tertiary consumers can be estimated using the 10% rule.

This rule states that, on average, only about 10% of the energy from one trophic level is transferred to the next.  In this scenario, if primary producers have 2,000 units of biomass, only 10% of that energy (200 units) will be transferred to primary consumers. Similarly, only 10% of the energy from primary consumers will be transferred to secondary consumers, resulting in 20 units of biomass at the secondary consumer level.

Lastly, 10% of the energy from secondary consumers is transferred to tertiary consumers, which equates to 2 units of biomass. In summary, in a food chain with 2,000 units of biomass among primary producers, one would expect to find approximately 2 units of biomass among the tertiary consumers, based on the 10% rule. This rule highlights the significant energy loss that occurs as organisms consume one another in a food chain.

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Answer:

options on. D is write answer

The city grew by approximately 1.9% from 2010 to 2020.

To calculate the percent growth from 2010 to 2020, we need to consider the growth from 2010 to 2015 and the subsequent decline from 2015 to 2020. From 2010 to 2015, the population grew by 8%, which means it increased to 52,000 + 8% of 52,000 = 56,160. From 2015 to 2020, the population fell by 5.7%, which means it decreased to 56,160 - 5.7% of 56,160 = 52,987.68 .To calculate the overall percent growth from 2010 to 2020, we compare the final population of 52,988 to the initial population of 52,000. The percent growth is ((52,988 - 52,000) / 52,000) * 100 = 1.9% (rounded to the nearest whole number). Therefore, the city grew by approximately 1.9% from 2010 to 2020.

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Answer:

C) Is the enzyme that facilitates DNA synthesis.

Answer:

C

Explanation:

Prokaryote cell and Eukaryote cell have significant differences in their structures, functions, and complexity. A comparison between prokaryote cell and eukaryote cell is given below: Prokaryote cell .They lack a nucleus and are unicellular organisms without membrane-bound organelles .

They contain a circular DNA molecule located in the nucleoid, which is surrounded by the cytoplasm. A rigid cell wall made of peptidoglycan is present in bacteria. The cell wall acts as a protective barrier around the cell, shielding it from environmental threats. On the other hand, archaeal cell walls are composed of different materials than bacterial cell walls. Pili and flagella are present in most bacteria.

The pili help the bacteria attach to surfaces, while the flagella are used to propel the cell .Eukaryote cell .They have a well-defined nucleus and are multicellular organisms with membrane-bound organelles .Cells may have a cell wall, but it is not made of peptidoglycan as in the prokaryotic cell. Instead, plants have cell walls made of cellulose, while fungi have cell walls made of chitin .

They have mitochondria, which are the site of cellular respiration and produce ATP, and chloroplasts, which are the site of photosynthesis. These organelles are absent in prokaryotic cells . Eukaryotic cells are larger and more complex than prokaryotic cells.

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Adhesion depends on binding between specific molecules on both the host and pathogen so that the pathogen can gain a stable foothold on host tissues.

In epidemiology, adhesion makes reference to the process in which pathogen and host interact during an infection.

The adhesion process is fundamental to reach the survival of the pathogen during a particular infection.

These pathogens can be any type of microorganism able to cause harm to the host (e.g., bacteria and fungi).

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Answer: It looks accurate to me

Explanation: Nice looks good

Answer:

Linked Genes

Explanation:

i think this is correct but Brainliest if I'm right please?

Answer: The hydrophobic, or “water-fearing,” part of a phospholipid consists of its long, nonpolar fatty acid tails. The fatty acid tails can easily interact with other nonpolar molecules, but they interact poorly with water.

The characteristic of a phospholipid membrane keeps the aqueous environment inside and outside the cell separate and the character is hydrophobic or water fearing.

Cell membrane has been defined as a wall that has differentiated and protect the inner structure of the cell from the outer environment. The main function of the cell membrane has to keep away the toxic material out of the cell. The cell membrane has contain channels as well as receptors that gives permission to only selective permeable membrane to enter into the cell.

Cell cycle has been defined as cycle in which the cell is able to produces, grows and divides. The cell cycle has mainly three steps the first one has been known as  G1 phase in which the size of the cell increases, S phase has been synthesis of DNA takes place and the third step has been known as G2 phase in which cell ready to divide.

Cell has been defined as the base of life as it has the structural as well as functional unit of life. Cell has made up of pre existing cells and the cell contain various cell organelles such as the mitochondria, endoplasmic reticulum, ribosomes, golgi appratus, nucleus, and cytoplasm.

Therefore, The characteristic of a phospholipid membrane keeps the aqueous environment inside and outside the cell separate and the character is hydrophobic or water fearing.

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Answer:

D. The endosperm has 36

Explanation:

The egg of a plant has a haploid chromosome number of 12(n = 12)- The endosperm has 36 chromosomes.

After double fertilization, the endosperm is a tissue that develops inside the seeds of the majority of flowering plants. In most species, it is triploid (three chromosome sets per nucleus), which may be auxin-driven. In addition to providing nutrition in the form of starch, it also surrounds the embryo and may also contain oils and proteins. As a result, endosperm may become a source of nutrition for animals. For instance, barley endosperm is the primary source of sugars for brewing beer, while wheat endosperm is ground into flour for bread (whole wheat flour also contains the rest of the grain).

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Acidophilus can be either unicellular or multicellular, but they are commonly green algae-like formed and usually unicellular.

Answer:

color change

release/absorb energy

solid precipitate forms

gas bubbles.

The wrong answer is melt from solid to liquid.

Sex-linked traits are genes carried on the sex chromosomes, the X and the Y chromosome. Only males carry the Y chromosome, and therefore all genes on the Y chromosome are passed down to the son. Women carry two X chromosomes; therefore, sex-linked traits can be passed on from both the mother and the father.

Examples of sex-linked traits include red-green colour blindness and haemophilia.

In codominance, both alleles are expressed in the phenotype of heterozygous offspring. The human ABO blood group is an example of codominance.

There are three alleles for the ABO gene: IA, IB, and I (i is recessive to both IA and IB). If an individual is heterozygous for both the IA and IB alleles, they will express both A and B antigens on their red blood cells. If they are homozygous for either IA or IB, they will express only one antigen on their red blood cells.

Incomplete dominance occurs when neither allele is dominant nor recessive, but instead, the phenotype is a blend of both. An example of incomplete dominance is the snapdragon flower, which has a red flower and a white flower. When the red flower is crossed with the white flower, the resulting offspring have pink flowers, which is a blend of red and white. The genotype for pink flowers is Rr, where R represents the red allele, and r represents the white allele.

When two pink flowers are crossed, their offspring will have a ratio of 1:2:1 of red, pink, and white flowers.

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Only in the citric acid cycle does each glucose molecule yield 2 ATP and 6 NADH molecules.

Two pyruvate molecules are produced from one glucose molecule. The pyruvate dehydrogenase complex enzyme then transforms these pyruvate molecules into Acetyl-CoA. One acetyl-CoA generates one GTP (the ATP equivalent), one FADH2, and three NADH. Two acetyl CoA (or one glucose molecule) will result in the synthesis of two ATP, two FADH2, and six NADH.

The citric acid cycle is a chain of redox and decarboxylation events that eliminate carbon dioxide and high-energy electrons. In the following route, the electrons momentarily trapped in NADH and FADH2 molecules are used to produce ATP. At each cycle turn, substrate-level phosphorylation yields one molecule of either GTP or ATP. The cyclic pathway is not compared to a linear one.

Thus, we can conclude that each glucose molecule only produces 2 ATP and 6 NADH molecules during the citric acid cycle.

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Answer:

There are many ways.

Explanation:

Humans have a combined respiratory and circulatory system, whereas insects do not. In humans, the air is brought in through the mouth/nose, through the windpipe, and into the lungs, the oxygen is absorbed into the bloodstream where it can be transported to muscles and organs. However, insects take in air through tiny holes in their thorax and abdomen. These are called spiracles. The oxygen is stored in many dorsal air sacs to be used. Then carbon dioxide is expelled through the spiracles.

The following statements describe the similarities and differences in the way humans and insects obtain oxygen:

Respiration is the process by which living organisms generally exchanges gases with its environment.

The way in which different organisms obtain energy for the respiratory process differs.

Some of the differences and similarities between the way humans and insects obtain oxygen are as follows:

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Answer:

The cell division where 4 daughter cells with half of the genetic information of the original are obtained is meiosis (option c).

Explanation:

Meiosis is a type of cell division through which sex cells or gametes are obtained. It is a reductive division, since the daughter cells resulting from the process contain half of the chromosomal charge with respect to the original one.

In the process of meiosis, four haploid cells are obtained from a diploid cell, each of which is involved in the reproduction of the species. This mechanism of division occurs in two stages, called meiosis I and II.

The other options are not correct because:

    a) Diffusion: it is a passive trans-membrane transport mechanism.

    b) Mitosis: is the cellular division of somatic cells, where the result is two daughter cells identical to the original.

    d) Photosynthesis: is the mechanism by which plants obtain energy and nutrients, from solar energy.

The pH indicator will produce a color change, which can be used to indicate a positive lactose fermentation test.

Lactose fermentation tubes and undiluted samples would be used to determine fecal contamination in water.

Fecal contamination is any type of physical, chemical, or biological contaminant that can be found in water as a result of feces (human or animal) entering the water.

This can occur as a result of leaky sewer systems, flooded septic tanks, or improperly disposed of fecal matter in lakes, rivers, or streams.So, the answer to this question is option (a) Lactose fermentation tubes and undiluted samples.What is Lactose fermentation?Lactose fermentation is a process that converts lactose, a disaccharide sugar molecule, into energy and other beneficial byproducts.

The fermentation of lactose yields the following products: lactic acid carbon dioxide hydrogen an organism can ferment lactose, a change in pH will occur in the surrounding medium. As a result,

the pH indicator will produce a color change, which can be used to indicate a positive lactose fermentation test.

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Active transport across membrane is shown in picture and requires a transport protein and ATP.



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Answer:

The answer is B

Explanation:

Vestgial

The image shows a nucleotide, which is formed by three parts:

a: a phoshate group

b: a sugar

c: a nitrogenous base (A/U, T, C or G)

Answer: The correct answer is B. depleted.

Explanation:

Depletion refers to the reduction or loss of plant and animal species. One factor of it is overexploitation.

Answer:

High to low concentration

Explanation:

Answer:

they are no longer genetically identical

Answer: Wear eye protection, rubber gloves

Handle acid with care and follow CLEAPSS or SSERC guidelines on its use.

The safety equipment which is required for the Osmosis Experiment is as follows:

Osmosis may be defined as a process through which the molecules of a solvent be inclined to pass through a semipermeable membrane from a region of less concentrated solution into a more concentrated one.

During the whole setup of this experiment, numerous chemicals, as well as, instruments are required. So, in order to ensure your safety, try to follow all the basic and fundamental protocols of the laboratory along with that of the experiment.

Equipment assists or saves you in situation where a certain mistake is has happened. For example, if a drop of acid falls on hand, assume what will happen when you are without gloves? This is the importance of safety equipment.

Therefore, the safety equipment which is required for the Osmosis Experiment are goggles, gloves, systematic protocols, etc.

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An oily substance called sebum is secreted onto hairs to stay them soft and pliable and is eventually deposited onto skin to keep it soft as well

sebaceous gland, small oil-producing gland present within the skin of mammals. Sebaceous glands are usually attached to hair follicles and release a fatty substance, sebum, into the follicular duct and thence to the surface of the skin.

Human sebum consists of squalene, esters of glycerol, wax and cholesterol, also as free cholesterol and fatty acids . Triglycerides and fatty acids, taken together, account for the predominant proportion (57.5%), followed by wax esters (26%) and squalene (12%).

Why is sebum produced?

Sebum is an oily substance produced within the sebaceous glands. It mixes with fat molecules, called lipids, to make a protective coating on the skin's surface. These lipids help hydrate the skin and protect it from potentially harmful pathogens, like bacteria and fungi.

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Foods that are high in unsaturated fats are usually liquid at room temperature due to the unsaturated fats they contain. This is because unsaturated fats have a lower melting point than saturated fats and are therefore liquid at room temperature.

Unsaturated fats are a type of fat that has one or more double bonds in their chemical structure. This gives them a bent shape that makes it more difficult for them to pack tightly together. Since these fats are not packed as tightly, they tend to have a lower melting point and are often liquid at room temperature.

The key difference between unsaturated and saturated fats is the number of double bonds in their chemical structure. Unsaturated fats have one or more double bonds, while saturated fats do not have any double bonds. The presence of double bonds makes unsaturated fats more "bent" and less rigid, which makes it more difficult for them to pack tightly together. This is why unsaturated fats tend to be liquid at room temperature while saturated fats tend to be solid at room temperature.

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O Dew will form on leaves.

The dew point is the temperature at which water vapor in the air will condense into liquid droplets. It is a measure of the amount of moisture in the air. The higher the dew point, the more moisture in the air. The dew point temperature is determined by the air temperature and the amount of water in the air. When air cools, its capacity to hold moisture decreases. If the air cools to its dew point, the excess moisture condenses, forming dew.

In the morning, the temperature on the ground is often more excellent than the temperature in the air. As the sun rises, the ground warms up, and the air above it cools. As the temperature drops to the dew point, the moisture in the air condenses on surfaces such as leaves, blades of grass, and other outdoor surfaces that are at or near the dew point temperature.

The statement "Air will contain more water vapor" is incorrect, as dew forms when the air can no longer hold its moisture and the excess water vapor condenses.

The statement "Clouds will disappear" is not correct, as dew formation is a phenomenon related to the condensation of water vapor, and clouds are formed by the same process, but at higher altitudes. "Water vapor in the air will evaporate" is also not correct, as the temperature dropped to the dew point, which is the point where the water vapor condenses, not evaporates.

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The HPV vaccine is nearly 100% effective in preventing the strains of HPV that cause warts and cervical cancer.

The HPV vaccine is highly effective in providing protection against certain strains of the human papillomavirus (HPV) that are responsible for causing warts and cervical cancer. HPV is a sexually transmitted infection that can lead to various health issues, including genital warts and cervical abnormalities that may progress to cancer.

The HPV vaccine targets specific HPV strains known to be high-risk for the development of cervical cancer, primarily types 16 and 18. These two strains are responsible for approximately 70% of all cervical cancer cases. By vaccinating individuals before they are exposed to HPV, the vaccine helps to build immunity against these specific strains, reducing the risk of acquiring HPV infections that can lead to cervical cancer and genital warts.

Numerous studies and real-world data have shown the efficacy of the HPV vaccine in preventing HPV infections and related diseases. Clinical trials have demonstrated high vaccine efficacy rates, close to 100%, for preventing HPV infections caused by the targeted strains. This has led to the recommendation of widespread HPV vaccination as a preventive measure to reduce the incidence of cervical cancer and associated health issues.

It is important to note that while the HPV vaccine offers significant protection against specific high-risk strains, it does not provide complete immunity against all HPV strains or eliminate the need for regular cervical cancer screenings. Therefore, regular screenings and follow-up care are still recommended for early detection and prevention of cervical cancer, even for individuals who have received the HPV vaccine.

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The combining form referring to the tissue that is the major coverage of the external surface of the body is an integument.

The integument is the combining form referring to the tissue that is the major coverage of the external surface of the body.

The integumentary system is a system of the body that includes the skin and its associated structures. Hair, nails, sweat glands, and sebaceous glands are among these structures. It is the body's largest organ system, accounting for 16% of the total body weight of a person. The integumentary system's major function is to safeguard the body from damage, disease, and dehydration. It also serves to help maintain the body's internal environment and temperature balance.

The skin is the most important organ in the integumentary system. It is a tough, waterproof, and flexible protective barrier that prevents pathogens, pollutants, and other environmental threats from entering the body.

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