26.
Which of the following food chains
shows one way that energy moves
through an ocean ecosystem?
A fish plankton + whale → squid
B squid whale fish plankton
C plankton squid fish whale
D whale fish plankton → squid

If 15% of the nitrogenous bases in a sample of DNA from a particular organism are thymine, DNA contains 4 types of nitrogenous bases, namely Adenine (A), Cytosine (C), Guanine (G), and Thymine (T). Therefore, the total percentage of these nitrogenous bases in DNA should be 100%.

The percentage of Thymine is given to be 15%.Now, let's calculate the percentage of Cytosine. For this, we will use Chargaff's rule which states that Adenine pairs with Thymine and Cytosine pairs with Guanine in a DNA molecule. Therefore, the percentage of Adenine and Thymine should be equal (A = T), and the percentage of Cytosine and Guanine should also be equal (C = G).

Since Adenine and Thymine percentages are equal, the percentage of Adenine (A) = 15%Percentage of Cytosine (C) = Percentage of Guanine (G)Using the above equation, we can say that C + G = 85% (Remaining percentage after the inclusion of T and A).Since C = G (as per Chargaff's rule), we can write it as: C + C = 85% or 2C = 85%C = 85/2% = 42.5%. Hence, the percentage of Cytosine in the sample of DNA should be 42.5%.

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The myocardial of the heart is protected by the visceral serous pericardium, also referred to as the epicardium, which can be regarded as its serosa.

A mesothelium covering some loose connective tissue rich in elastin makes up the majority of its structure.

The wave of depolarization travels from the endocardial to the epicardial surface during ventricular contraction. Both of these layers work to lubricate the heart during activity to reduce friction.

The parietal serous pericardium connects with the visceral serous pericardium at the anatomical base of the heart and extends to the root of the major arteries. The ventricular outflow tracts, where the aorta and pulmonary trunk exit the heart, and the ventricular inflow tracts, where the superior/inferior vena cava and pulmonary veins enter the heart, are where this juncture occurs.

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Two examples of Lamarck's theory are the first and last options "a fish needing to develop stronger flippers and dark coat of pocket mice", as the theory states inheritance of acquired character.

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The rate of cooling is inversely proportional to the crystal size. The faster the cooling rate, the smaller is the crystal size and the slower the cooling rate, the larger is the crystal.

Rate of cooling can be defined as the elimination or removal of the high temperature from any object. This removal and be slow and gradual, therefore slow rate of cooling; or it cab quick and instant, therefore, fast rate of cooling.

Crystals are the solid components whose molecules are arranges in a regular fashion, giving it an ideal 3 dimensional pattern. They are symmetrical in nature. The examples of crystals are sugars, salt, etc.

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Answer:

C

(3·x^2 - 2·x)·(2·x^2 + 3·x - 1)

= 3·x^2·2·x^2 + 3·x^2·3·x - 3·x^2·1 - 2·x·2·x^2 - 2·x·3·x + 2·x·1

= 6·x^4 + 9·x^3 - 3·x^2 - 4·x^3 - 6·x^2 + 2·x

= 6·x^4 + 5·x^3 - 9·x^2 + 2·x

Explanation:

hope this helps UwU

if it is correct and you make me brainliest

Answer:

Neurons aren't able to communicate with each other.

Answer: D

Explanation:

Answer: C

all of these are good things except the flooding of the habitats  

Narcotic effects in the brain involve activity related to the receptors: (c) opioid.

Narcotic effect is the effect of the drugs upon the brain that causes good as well as bad effects. If used in required and prescribed doses, drugs can reduce pain and provide the state of sleep. However when the dose of drugs increases, it results in addiction.

Opioid is the class of drugs used as a pain reliever. These drugs bind to the opioid receptors of the brain. They are quite powerful drugs and hence overdose can result in deleterious effects over the body. The different drugs under opioids are heroin, morphine, codeine, etc.

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The number of different haploid cells that could be produced by meiosis in a diploid cell with four pairs of homologous chromosomes is 16.

During meiosis, homologous chromosomes pair up, exchange genetic material in a process called crossing over, and then separate into different cells. In this case, there are four pairs of homologous chromosomes, which means there are a total of 8 different chromosomes.

Each chromosome can independently align and separate during meiosis, resulting in different combinations of chromosomes in the resulting haploid cells. The number of possible combinations is calculated by taking 2 to the power of the number of chromosome pairs. In this case, there are 4 pairs, so the calculation is 2⁴, which equals 16.

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When the brown anole species appeared in Florida, the green anole population declined primarily due to competition for resources and habitat. The brown anoles likely competed with the green anoles for food, shelter, and mating opportunities, leading to a decrease in the native green anole population.

The decline in the green anole population when the brown anoles appeared is due to competition for resources and habitat. Brown anoles are better adapted to urban environments and can thrive in disturbed areas, while green anoles are adapted to natural habitats.

The brown anoles outcompete the green anoles for food, shelter, and breeding sites, leading to a decline in the green anole population. Additionally, brown anoles are known to prey on green anoles, further contributing to their decline. The introduction of a new species can have significant impacts on the ecosystem, and in this case, it has had a negative impact on the native green anole population.

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Answer:

I'd say B. Muscles make up about 40% of the body so the cell amount should be even.

Structures with similar structure but differ in their function are known as homologous structures. The similar structure is due to having a common ancestor with that structure that was passed down. Homologous structures are used to find evolutionary relationships among organisms.

The study of comparative anatomy shows that the same basic structures of the body have been modified over time to serve various purposes. For example, the forelimbs of vertebrates are made up of the same bones, although they are used for different functions in different animals. This is because they have a common ancestor from which they evolved.Structures with different structures/origin but the same function are called analogous structures.

These structures have a superficial resemblance due to convergent evolution, such as a bird and bat wing. Convergent evolution is when two different species evolve for the same conditions (flying, swimming, etc.).Vestigial structures are structures that have no function but are remnants of structures that had a function in the ancestors of the organism. These structures may not have any function in the organism, but they may have had an important function in the organism's ancestors. DNA is a universal molecule that is used by all living organisms.

The genetic code is universal, and all organisms use the same code to build proteins. DNA and proteins have been used to determine evolutionary relationships among organisms. Organisms share huge amounts of DNA and proteins, and this similarity is used to determine their evolutionary relationships. Humans and chimpanzees share over 98% of their DNA. Most of the differences are in non-protein coding regions of the DNA.

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A codominant pattern of inheritance occurs when both alleles of a heterozygote are equally expressed in the phenotype.

Heterozygous is the term used to describe the existence of two distinct alleles at a specific gene locus. One normal allele, one mutant allele, or two separate mutant alleles can all be present in a heterozygous genotype.

In codominant inheritance, a gene expresses in two distinct forms (alleles), each of which produces a slightly different protein. The characteristics of the genetic condition are influenced by both alleles, which also affect the genetic trait. Humans' MN blood group system serves as an illustration of codominance, as do speckled poultry, which express alleles for both black and white plumage, and roan cattle, which express alleles for both red and white hair.

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Some organisms use vitamins as coenzymes to be able to live as aerobes.

Coenzymes are molecules that help enzymes carry out their functions. In the case of organisms living as aerobes, which require oxygen to survive, vitamins play a crucial role in energy production. For example, vitamin B2 (riboflavin) is an essential component of the electron transport chain, which is responsible for generating ATP, the cell's energy currency, during aerobic respiration.

Similarly, vitamins such as niacin (vitamin B3) and pantothenic acid (vitamin B5) are involved in key metabolic reactions that support aerobic metabolism. By using vitamins as coenzymes, organisms can efficiently carry out aerobic respiration and obtain the energy they need to survive.

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The four main principles of natural selection of a species population include variation, overproduction, adaptation, and descent with modifications.

Natural selection is the process through which populations of living organisms adapt and change with time. Individuals in a population are naturally variable in an environment, meaning that they are all different in some way or the other. This variation means that some individuals have traits which are better suited to the environment than others.

Natural selection is based on four main principles which are variation, overproduction, adaptation, and descent with modification.

Variation is defined as any difference between the individuals in a species or groups of organisms of any kind of species. Mutation is the ultimate source of genetic variation in a population, but mechanisms such as sexual reproduction and gene flow contribute to it as well.

Overproduction occurs as a result of large production of a species. This results into increase in a population.

Adaptations are the changes in the physical or genetic makeup of a species which help them to survive better in an environmental condition.

Descent with modification means that traits are passed down from one generation to the next generation and sometimes it also undergo changes or modifications over time. These modifications may be caused through Natural Selection or even a mutation of DNA.

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Answer: the relative differences in arrival times of the S and P seismic waves at several recording stations tell scientists about the different speeds those waves were traveling at, which in turn gives information about the density of the material the layer is made of, and how thick the layer is in several directions.

Explanation:Earth's layers

Answer:

Fruits, vegetables, lean meat, limiting saturated fats, eating controlled portions.

Explanation:

Fruits and vegetables are extremely important for a balanced diet. Same with lean meat.

These provide good amounts of fiber and protein.

Eating less saturated fats are good too. Same with eating controlled portions so you do not over or under eat.

Hope this is correct, good luck with your studies.

Answer:

A balanced diet contains foods from the following groups: fruits, vegetables, dairy, grains, and protein.

Through openings in the epidermis called stomata the gases like carbon dioxide, oxygen, and water vapour move in and out of leaves.

Each stoma which is the singular form of stomata is surrounded by two guard cells. As these guard cells deflate or swell, the passages into the leaf either open or shut, thus regulating the materials that pass in and out of the plant.

Stomata are tiny, microscopic and critical for photosynthesis. Stomata resemble doughnuts — a circular pore with a hole in the middle for gas to enter or leave the plant.

Stomata are usually more numerous on the bottom of leaves. Stomata also provide for the exchange of gases between the outside air and the branched system of interconnecting air canals within the leaf.

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The correct question is:

How do gases enter and exit the leaves of plants?

The data made above suggest that resource partitioning is an ecological mechanism that the two insect species most likely exhibit. Option b is Correct.

Species that dwell in the same community might develop to use distinct resources, which lessens competition. This process is known as resource partitioning. When present in a region where the other beetle species is absent, the two-spot and three-spot avenger beetles hunt for food at night. They are closely related predatory bug species.

The two species have evolved to hunt at opposite times of the day where their ranges overlap, with the three-spot avenger beetle hunting in the morning and the two-spot avenger beetle hunting at night. As they are no longer directly fighting for the same resources, this lessens conflict between the two species for prey. Option b is Correct.

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Answer:

C.

Explanation:

Gravity

Answer:

I believe the printing press

Explanation:

the printing press was invented around 1440

Connective tissue, which involves the fibers that hold your organs and other components in place, is harmed by Marfan syndrome, a genetic illness.

An FBN1 gene mutation causes Marfan syndrome. The mutation restricts the body's ability to make the necessary proteins for connective tissue construction. Marfan syndrome is an asymptomatic disease that strikes one in four persons. The chance of a Marfan syndrome carrier passing it on to their offspring is one in two.

The faulty gene for Marfan syndrome is typically inherited from a parent who also has the condition. It is a 50/50 chance that the faulty gene will be inherited by each kid of an affected parent.

About 25% of those with Marfan syndrome have a bad gene that is inherited from neither parent.

So the syndrome is autosomal dominant, even if only one parent has it, a kid can inherit it. Therefore, there is a 50% risk that the child of a Marfan syndrome carrier will have the condition.

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Histones bind tightly to DNA primarily because of the strong electrostatic interactions between the positively charged histones and negatively charged DNA.

Histones bind tightly to DNA primarily because of electrostatic interactions between the positively charged amino acid residues on histones and the negatively charged phosphate groups on the DNA backbone. This electrostatic attraction is a strong force that can hold the two molecules together tightly.

Histones are rich in positively charged amino acids, such as lysine and arginine, which can form salt bridges with the negatively charged phosphate groups of the DNA. This helps to neutralize the charge of the DNA, making it more compact and stable. In addition to electrostatic interactions, histones also form hydrogen bonds and other non-covalent interactions with the DNA, further contributing to the stability of the complex.

While both histones and DNA are hydrophobic, this is not the primary reason for their tight binding. Hydrophobic interactions may contribute to the stability of the complex in some cases, but they are typically weaker than electrostatic interactions and hydrogen bonding.

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Answer:

Option C. is the correct choice.

Explanation:

Food provides "energy" to organisms.

Best Regards!

Answer:

C. Energy

Explanation:

Answer:

its c

Explanation:

component of the cell membrane is a Lipid for sure and thats the only answer choice with lipid

Answer:

i belive its C

Explanation:

The others dont make sense to me to fit the answer :)

Species more likely to become endangered require pristine habitats and late successional ecosystems. The correct option is C. A and B only.

An endangered species is a species that is at risk of extinction or is declining rapidly in population. Endangered species are those that have been classified by the International Union for Conservation of Nature (IUCN) as at risk of extinction in the wild.

A pristine habitat is a habitat that has never been impacted or damaged by human activity. These habitats are free of human-caused disturbances, such as habitat destruction, pollution, or invasive species.

Late-successional ecosystems are those that have reached a climax or stable state. These ecosystems are the most mature and diverse, with a wide range of species. The ecosystems that have been undisturbed for a long period of time are those that are late-successional ecosystems. Species that are more likely to become endangered require pristine habitats and late-successional ecosystems. These types of ecosystems are rare and fragile and are easily impacted by human activities. Therefore, conservation measures must be taken to ensure that these ecosystems are protected from human disturbance and other forms of damage.

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Explanation:

The answer is ( faramones). for mating purposes..