________ is a fatty molecule made by alveolar cells to reduce surface tension and prevent alveolar collapse between breaths. Group of answer choices Surfactant Nicotine Mucus Sebum

Percentage of children to be color blind- 50%

Percentage of children to be normal- 50%

Genotypes of F1 generation: XCXc , XcXc, XCY, XcY

Explanation:

If we cross multiply these genotypes XCXc and XcY, the resulting offspring would be:

XCXc – normal vision female- 25%

XcXc – colorblind female- 25%

XCY – normal male- 25%

XcY- color blind male- 25%

Answer:

malaria isn't caused by bacteria

Homologous evolution means divergent evolution.

it is a type of evolution in which different species have common ancestor. for example if we take members of one species and put them in different environments then it is observed that there is some changes in the species according to environment

analogues evolution means convergent evolution

Answer:

Similar traits can be either homologous or analogous. Homologous structures share a similar embryonic origin. Analogous organs have a similar function. For example, the bones in a whale's front flipper are homologous to the bones in the human arm.

It is calculated by dividing the number of gene copies by the number of times the allele occurs in the population. All the copies of every gene in a population make up the gene pool of that population.

An allele's or gene's relative frequency at a certain locus in a population is known as its allele frequency, which is expressed as a fraction or percentage. With regard to the population as a whole or the sample size, it is specifically the percentage of all chromosomes that have that allele.

It is exactly the proportion of all chromosomes that has that allele, with relation to the population as a whole or the sample size.

Therefore, take the square root of q2 to get q, or the frequency of the recessive allele in the population, which is 0.632 (0.632 × 0.632 = 0.4). So, q = 0.63. P must be 1–0.63 = 0.37 since p + q = 1.

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When two species compete for resources, (b) both species will decline in fitness. This is because competition takes up energy and resources that could otherwise be used for reproduction and survival.

The better competitor may be able to survive and reproduce more successfully than the poorer competitor, but both species will be less fit than they would be if they did not compete.

Competition for resources is a zero-sum game. This means that one species' gain in resources comes at the expense of the other species' loss of resources. As a result, both species will have to expend more energy and resources to compete, which will leave them less energy and resources for reproduction and survival. This will lead to a decline in the fitness of both species.

The decline in fitness may be more pronounced in the poorer competitor, but both species will be less fit than they would be if they did not compete. For example, two species of birds competing for the same food source may have to spend more time and energy searching for food, which will leave them less time and energy for reproduction and survival. This will lead to a decline in the fitness of both species, even if the better competitor is able to survive and reproduce more successfully.

In some cases, competition for resources can lead to the extinction of one or both species. For example, two species of bacteria competing for the same antibiotic may become resistant to the antibiotic, which will make them more difficult to treat. If one of the species is unable to develop resistance, it may become extinct.

Overall, competition for resources is a negative interaction that can lead to a decline in the fitness of both species involved.

Therefore, (b) both species will decline is the correct answer.

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Complete question :

When two species compete for resources, the fitness of:

(a) both competitors will remain the same.

(b) both species will decline.

(c) only the poor competitor will decrease.

(d) only the better competitor will increase.          

Due to the fact that each trait's genes are inherited individually, the law of independent assortment is the best to support the farmer's corn.

The development of reproductive cells causes various genes to separately separate from one another, according to the Principle of Independent Assortment.

During his research on the genetics of pea plants in 1865, Gregor Mendel made the first observation of an independent assortment of genes and their related phenotypes.

Therefore, different qualities are inherited independently of one another, according to the Law of Independent Assortment.

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Answer:

Inflammation

Lung consolidation

Formation of exudates

Explanation:

Pneumonia could be caused by Bacteria, viruses, and fungi. The air sacs are usually affected and characterized by presence of pus in the sacs. It could be serious and life threatening and can be treated with antibiotics.

The pathogenesis of pneumonia includes the inhalation of microbial agents, Inflammation , Lung consolidation and Formation of exudates.

Pieces of DNA that pass genetic traits from parent to offspring are called genes.

Genes are the pieces of DNA that pass genetic traits from parent to offspring. They are the basic units of heredity, and they contain the instructions for the development and function of all living organisms. Each gene is a specific segment of DNA that codes for a specific protein or RNA molecule. These proteins and RNA molecules play a vital role in the growth, development, and function of cells. The combination of all genes in an organism's DNA is called its genome. The traits inherited by an offspring are determined by the specific combination of genes passed on by the parents.

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Genes are pieces of DNA that pass genetic traits from parent to offspring. Here option C is the correct answer.

A gene is a segment of DNA that contains the instructions for the synthesis of a specific protein or RNA molecule.

These proteins and RNA molecules, in turn, perform a wide range of functions in the cell, including structural roles, catalyzing metabolic reactions, replicating DNA, responding to stimuli, and transporting molecules across cell membranes.

Genes are located on chromosomes, which are long, linear strands of DNA found in the nucleus of a cell. Each gene occupies a specific location on a chromosome, known as a locus. Humans have approximately 20,000-25,000 genes on their chromosomes.

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Answer:

a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Answer:

Working on the project together on Saturday, the group members met

Answer:

The answer is B.

Explanation:

c. Arcuate nucleus is the area of the hypothalamus that is a neural arc with a center that secretes appetite-stimulating hormones and another center that secretes appetite-suppressing hormones.

In the field of biology, the arcuate nucleus can be described as an area of the hypothalamus part of the brain that contains an aggregation of neurons.

As there are different neurons present in this region of the hypothalamus, this region of the brain is characterized for controlling various neuroendocrine and physiological functions.

The arcuate nucleus has two centers. One of these centers is responsible for secreting hormones that make you hungry. This part of the arcuate nucleus increases your appetite. The other center contains hormones that suppress your appetite.

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The minimum number of DNA or RNA nucleotides required to code for an amino acid is 2, which would be the case if organisms only employed twelve different amino acids to construct proteins rather than twenty.

Amino acids are the building components of proteins. An extensive chain of amino acids makes up proteins. There are countless different types of proteins in your body, each of which has a vital function. Each protein has a unique arrangement of amino acids.

The protein can have many forms and perform a number of biological roles depending on the sequence. You can compare amino acids to the letters of the alphabet. You can create new words by combining letters in novel ways. Similar to how proteins are made, amino acids can be combined in many ways to create a variety of proteins.

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Oldowan tools were used by at least one australopithecine species is true.

Oldowan tools are the oldest stone tool-making tradition, which were created by early humans at least 2.6 million years ago. These stone tools were used to carry out a variety of tasks, including chopping, scraping, and cutting. Stone flakes and cores, as well as simple choppers, were among the Oldowan tools.

Oldowan tools were created by early hominins, which included the australopithecines. These tools were widely used during the Lower Paleolithic period, and were primarily made of stone.

The discovery of Oldowan technology suggests that early humans were able to manipulate their environment, and that their cognitive abilities allowed them to create and use simple tools.

Oldowan tools are often associated with the Homo habilis species, but they were also used by at least one australopithecine species.

The australopithecine species that are known to have used Oldowan tools are Australopithecus garhi and Australopithecus africanus.

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Answer:

genetics? I'm not sure :(

The written exam for a driver's license can be classified as an achievement test.

A test is an instrument to measure knowledge or skills in a specific area.

Tests are classified based on their purpose into:

These tests measure both skills and knowledge, which means they integrate theory and practice.

This category applies to written exams for a driver's license because it is expected the examiner knows the theory such as the meaning of the traffic signs and the practice such as the steps to park a car.

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There are three primary mechanisms that can produce different polypeptides from the same gene: alternative splicing, post-translational modifications, and reading frame.

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Answer:

energy ( heat has energy makes sense to me hope it helps)

Explanation:

Answer:

There are five main symbiotic relationships: mutualism, commensalism, predation, parasitism, and competition. To explore these relationships, let's consider a natural ecosystem such as the ocean. Oceanic environments are known for their species diversity

Explanation:

Answer:

Mutualism - An interaction between two organisms in which both organisms benefit from.

Commensalism - An interaction between two organism in which one organism benefits from and the other organism neither benefits nor gets harmed.

Parasitism - An interaction between a parasite and an organism. In this interaction the parasite lives inside of the organism and causes potential harm to the host

Mimicry - imitation of another organism for survival

Explanation:

First lets define symbiosis

Symbiosis : Interaction between two organisms predominantly to benefit one or both of the organism

Now lets find the 4 types of symbiosis

The four major symbiotic relationships include mutualism, commensalism,  mimicry and parasitism

Now lets describe/define each symbiotic relationship

Mutualism - An interaction between two organisms in which both organisms benefit from.

An example would be sharks and remora fish. Remora fish keep the water fairly clear of scraps around the shark which prevents the development of unhealthy organisms resulting in a healthy shark. In return remoras receives a fairly convenient food source and they receive protection.

Commensalism - An interaction between two organism in which one organism benefits from and the other organism neither benefits nor gets harmed.

An example would be frogs and plants. Frogs use plants for protection and the plants way of life does not change in any way

Parasitism - An interaction between a parasite and an organism. In this interaction the parasite lives inside of the organism and causes potential harm

An example would be fleas and dogs. Fleas live off of the blood in the organism (the dog in this case). Consequently the dog experiences hair loss, scratching, and irritated skin.

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In an Electrostatic Precipitator (ESP), the particle collection efficiency is typically expressed as the percentage of particles removed from the air stream.

Given that the ESP initially collects 95 percent of the particles, we can determine the new percent recovery when doubling the air flow rate while keeping the particle loading constant.

When the air flow rate is doubled, the residence time of particles passing through the ESP decreases, which can potentially affect the collection efficiency. However, since we're keeping the particle loading constant, it means that the number of particles entering the ESP remains the same even with the increased air flow rate.

Under the assumption that the ESP's collection efficiency remains constant regardless of the air flow rate, the new percent recovery can still be considered as 95 percent.

It's important to note that in real-world scenarios, the collection efficiency of an ESP may vary with changes in air flow rate, particle size, particle concentration, and other factors. Therefore, for accurate predictions or evaluations, it's recommended to consult specific ESP performance data or conduct experimental testing.

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Answer:

All units of life

Explanation:

Answer:

All living things.

Explanation:

Answer:

Water and carbon dioxide

The water becomes oxygen and the carbon dioxide gets turned into glucose.

Answer:

Examples of Newton's third law of motion are ubiquitous in everyday life. For example, when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air. Engineers apply Newton's third law when designing rockets and other projectile devices. Two other examples are: As a professor paces in front of a whiteboard, he exerts a force backward on the floor. A car accelerates forward because the ground pushes forward on the drive wheels, in reaction to the drive wheels pushing backward on the ground.

Explanation:

Answer:

During the New Moon the far side of the Moon is illuminated by the Sun, while the side that faces the Earth lies in darkness so the Moon is invisible. ... As the Moon follows its path from the Full Moon position less and less of the Earth-facing side is illuminated resulting in the “waning” phases.

Explanation:

Answer:

cycle:

1. Attachment: A bacteriophage attaches to the surface of a bacterial cell.

2. Entry: The viral DNA is injected into the bacterium and integrates into the host chromosome.

3. Prophage: The integrated viral DNA is known as a prophage and is replicated along with the bacterial chromosome.

4. Replication: The prophage replicates along with the bacterial DNA during cell division.

5. Induction: A trigger, such as stress or UV radiation, causes the prophage to leave the bacterial chromosome and enter the lytic cycle.

6. Lytic cycle: The viral DNA begins replicating and producing new phages, which lyse the host cell and release new viruses.

7. Release: The newly produced phages are released into the environment to find other bacterial cells to infect.

Note: The lysogenic cycle can sometimes be followed by the lytic cycle, in which the virus uses the host cell to produce new viruses, ultimately leading to lysis of the host cell.

In the splicing step of gene expression, introns are spliced out, and exons are stitched together.

Gene expression refers to the process of protein synthesis that begins with a gene in DNA and finishes with a functional protein. The genetic code is translated to make protein during gene expression. Gene expression is a complex process that requires many different molecules, including RNA polymerases, transcription factors, and other regulatory proteins.

In eukaryotic cells, pre-mRNA is modified before it exits the nucleus. RNA splicing is a crucial aspect of pre-mRNA processing, in which non-coding introns are excised and exons are joined to produce mature mRNA molecules. The splicing process is carried out by a complex machinery consisting of small nuclear ribonucleoprotein particles (snRNPs).

The snRNPs in spliceosomes recognize introns and bring together the flanking exons for precise excision. Intron removal is followed by the ligation of exons, which results in the formation of a mature mRNA molecule that can be exported from the nucleus to the cytoplasm, where it can be translated into a functional protein.

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Answer:

A burning piece of wood is a chemical change, because you alter it, and it turns to ashes, and it is irreversible, where as you can make water cold again

Answer:

youre creating a new substance in a chemical reaction

Explanation:

by boiling water, you arent making anything new. you're just changing the form of the water.

by burning wood, you're inducing a chemical reaction because some new substance is being made with the reactants

The six main things that happen in the boil are sanitization, hop addition, evaporation, coagulation of proteins, maillard reactions, and extraction of sugars and other compounds.

In sanitization, the boil kills off any harmful bacteria or microorganisms present in the wort, ensuring a clean fermentation process. Hop addition are added at various stages during the boil to provide bitterness, flavor, and aroma to the beer. Water evaporates during the boil, which concentrates the wort and helps achieve the desired original gravity for the beer.

In coagulation, proteins in the wort coagulate and form clumps called "trub," which can be removed after the boil to promote clarity and stability in the finished beer. Maillard reactions are the chemical reactions between amino acids and reducing sugars occur during the boil, contributing to the color and flavor development in the beer. Sugars and other compounds from the malt are extracted and dissolved into the boiling water, creating the basis for the final beer's body, color, and flavor profile.

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Answer:

The correct answer is C. the amount of light in deeper ocean zones is too dim to support photosynthesis

Explanation:

Shrimp are found only in shallow ocean zones, because the amount of light in deeper ocean zones is too dim to support photosynthesis.

Shrimp are tiny organisms, comes under crustaceans. They are only of 2 cm.

This species is closely related to lobster.

Shrimps eat photosynthetic organism, that's why they are found in shallow water where the algae and other plants are present.

Because in deep water, there is less photosynthesis.

Thus, the correct option is C, the amount of light in deeper ocean zones is too dim to support photosynthesis.

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Answer:

cell membrane

Explanation:

i took this class last year

Answer:

cell membrane

Explanation:

only plants have cell walls, chloroplasts, and one large vacuole. though, animal cells do have vacoules, only plant cells have ONE and animals have more than one