Why might the stomata be called "necessary evils"?

Answer:

To be a possible answer to a scientific question, a hypothesis must be testable.

The primary distinction between algae and plants is found in the structure of their cells. Plants are only multicellular, although algae can also live as unicellular structures.

Green algae differ from land plants in several ways:

Habitat: While land plants are adapted to terrestrial conditions and have unique structures to maintain them on land, green algae are generally aquatic creatures that are found in freshwater, marine habitats, and moist soil.

Size and complexity: Compared to terrestrial plants, which are typically multicellular, have more complex structures and specialised tissues, green algae can range in size from tiny single-celled organisms to enormous multicellular complexes.

Reproduction: Land plants can reproduce both sexually and asexually by vegetative propagation, but green algae can only reproduce sexually and sometimes asexually through the generation of spores or gametes.

Green algae's haploid and diploid phases frequently resemble one another in size and appearance, whereas land plants' haploid gametophyte and diploid sporophyte stages differ physically and functionally.

Green algae's cell walls are made of cellulose and other polysaccharides, whereas land plants' cell walls also include lignin, which offers extra support and protection.

Land adaptations: While green algae are adapted to life in water, land plants have evolved specialised structures like roots, stems, and leaves to obtain water and nutrients from the soil and to support themselves on land.

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In the case when  all other statistical procedures fail, the best predictor of a score will be the mean.

The following information should be considered:

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Part A: The value of ps in the heritability formula which represents the average daily weight gain of the unselected population of chickens at 6wk of age is 92 (Option A).

Part B: The expected average daily weight gain of the broiler chickens at 6wk of age that are hatched from the selected birds is 93.92 grams per day.

To calculate the expected average daily weight gain of the broiler chickens at 6wk of age that are hatched from the selected birds, we can use the following formula:

Expected average daily weight gain = (heritability coefficient) x (selection differential) + (average daily weight gain of unselected population)

Given that the heritability of daily weight gain of broilers is 0.24, and the selection differential is 100 - 92 = 8, we can plug these values into the formula:

Expected average daily weight gain = (0.24) x (8) + (92)

Expected average daily weight gain = 93.92 grams per day

Therefore, we can expect the broiler chickens hatched from the selected birds to have an average daily weight gain of 93.92 grams per day at 6wk of age.

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(c) Prokaryotes, mitochondria, and Chloroplasts all have DNA and ribosomes provides the best evidence for the Endosymbiotic theory of the origin of Eukaryotes.

The Endosymbiotic theory proposes that eukaryotic cells originated from A symbiotic relationship between two or more prokaryotic cells. Specifically, it suggests that the mitochondria and chloroplasts of Eukaryotic cells were once free-living bacteria that were engulfed by Larger host cells and eventually evolved into organelles.

The presence of DNA and ribosomes in both prokaryotes and Mitochondria/chloroplasts is a crucial piece of evidence in support of this Theory. This is because DNA and ribosomes are essential components of All living cells and are responsible for the synthesis of proteins, the Building blocks of life.

Therefore,  c) Prokaryotes, mitochondria, and Chloroplasts  provides the Best evidence for the Endosymbiotic Theory of the origin of Eukaryotes.

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The number of uncamouflaged animals will be far less than that of the camouflaged animals at the end of the experiment.

An experiment is a detailed study that tends to identify cause and effect relationship.

The hypothesis in this experiment is that camouflage helps animals to survive in their habitat. The predication is that animals that are camouflaged are able to escape predation owing to the camouflage.

The best test procedure is to observe animals that are camouflaged and those that are not camouflaged in the wild for a  period of about three months. Observe whether the number of uncamouflaged animals decreased more than that of the camouflaged animals after three months.

At the end of the experiment, it is expected that the number of uncamouflaged animals will decrease far more than the number of camouflaged animals.

The data will be collected using an unmaned drone over the area of study.

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Answer:

The correct answer is - The point closest to the scalp.

Explanation:

In order to analyze a strand of hair investigators need to collect the DNA. To analyze a strand of hair the DNA must be nuclear DNA which can be found at the root of the hair near the scalp as the point, hair attached to the scalp there are cells that can provide the nuclear DNA. Any other section or the part of the hair strand does not contain the nuclear DNA so analyze DNA would not be possible.

Answer:

D). Telophase

Explanation:

This observation can be explained by the fact that even though some amino acids are not directly responsible for net glucose resynthesis, they can still contribute to the process indirectly.

During the amino pathway, these 14C-labeled amino acids may be converted into intermediates, which can then be utilized by other pathways that contribute to glucose resynthesis. As a result, the 14C label from these amino acids can eventually be incorporated into the resynthesized glucose molecule.

The process of glucose resynthesis involves the conversion of certain amino acids into glucose. However, not all amino acids contribute to this process. Some amino acids are metabolized through other pathways and do not contribute to the net production of glucose.

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The thalamus is the relay center of the brain. It receives afferent impulses from sensory receptors located throughout the body and processes the information for distribution to the appropriate cortical area.

The epithalamus forms the roof of the diencephalon and consists of the pineal gland (an endocrine gland involved in circadian rhythms and the onset of puberty) and the habenular nuclei, whose functions are associated with the limbic system, as it connects to the septal nuclei via a tract called the stria terminalis .

The thalamus is often described as the gateway to the cerebral cortex. The term “thalamus” is a Greek word meaning inner chamber.

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Hershey and Chase started with a virus called a bacteriophage. They used the radioactive isotope sulfur-35 to label the protein of the virus and phosphorus-32 to label the DNA of the virus. They allowed the tagged virus to infect bacteria and studied the results. Hershey and Chase found that the only radioactive isotope within the bacteria was 35S. This result indicated that the genetic material inserted by the virus to infect the bacteria was 32P.

This is referred to as deoxyribonucleic acid and is the genetic material of living organisms.

Hershey and Chase showed that when bacteriophages, which are composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their protein does not.This was why only radioactive isotope within the bacteria was 35S.

This result indicated that the genetic material inserted by the virus to infect the bacteria was 32P. This brought the conclusion that protein was not genetic material, and that DNA was genetic material.

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.

Answer:Bacteriophage

protein

DNA

32p

DNA

Explanation:

I got them all correct in realize

As per the observation, it is clear that the correct answer is a medical book as it will have the medical history of the patient.

Gigantism is an extreme situation this is almost usually due to an adenoma, a tumor of the pituitary gland. Gigantism happens in sufferers who had immoderate boom hormones in childhood. The pituitary tumor cells secrete an excessive amount of boom hormone (GH), which main to many adjustments withinside the body.

How is gigantism diagnosed?

If gigantism is suspected, the prognosis is commonly shown via way of means of taking blood assessments to degree the stages of boom hormone and insulin-like boom component 1 (IGF1) circulating withinside the blood. IGF1 is launched into the blood often via way of means of the liver in reaction to boom hormone.

Thus it is clear that medical books will have a medical history of patent with gigantism.

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Answer:

Trees and grass have the most abundant biomass. Among trees, pines are the most abundant in biomass. Pines are found in the terrestrial biome of coniferous forests. Grass is commonly found in the grassland biome.

Plants grow through a process called photosynthesis. This process uses carbon from the air to build tissue in plants. So increased levels of carbon dioxide in the air should mean better plant growth. However, a new study published in the Global Change Biology journal says that increased carbon dioxide levels in the atmosphere make it difficult for plants to absorb nitrogen. This nutrient is essential for plant growth. The researchers of the study looked at the effect of increased carbon dioxide levels in many ecosystems, including grasslands and forests. The researchers concluded that as carbon dioxide levels in the atmosphere increase, the concentration of nitrogen in plants decreases. Lower nitrogen amounts decrease the plant’s protein levels and ability to grow.

Increased carbon dioxide also means that plants need more water and fertilizer to grow. Inadequate rainfall and supply of fertilizers may not match the level of increased carbon dioxide received by plants. Thus, increased carbon dioxide can hamper the growth of plants.

Explanation:

This is edmentum sample answer so change it up

Answer:

Trees and grass have the foremost copious biomass. Among trees, pines are the foremost inexhaustible in biomass. Pines are found within the earthly biome of coniferous woodlands. The grass is commonly found within the meadow biome. Plants develop through a preparation called photosynthesis. This preparation uses carbon from the discussion to construct tissue in plants. So expanded levels of carbon dioxide within the discussion ought to cruel better plant development. Be that as it may, a modern think about distribution within the Worldwide Alter Science diary says that expanded carbon dioxide levels within the environment make it troublesome for plants to retain nitrogen. This supplement is basic for plant development.

The researchers of the consideration looked at the impact of expanded carbon dioxide levels in numerous biological systems, counting prairies and timberlands. The analysts concluded that as carbon dioxide levels within the climate increment, the concentration of nitrogen in plants diminishes. Lower nitrogen sums diminish the plant’s protein levels and capacity to grow. Increased carbon dioxide implies that plants require more water and fertilizer to develop. Lacking precipitation and supply of fertilizers may not coordinate the level of expanded carbon dioxide gotten by plants. Hence, expanded carbon dioxide can obstruct the development of plants.

Explanation:

Also, this is my answer so please just switch my words up and this will get you right I had to do this question. This is not too much similar to the Plato answer because I change a lot of it to my words and this will get you A+ because I know!

DNase is an example of an exoenzyme. Microbes can produce the enzyme DNase which is secreted outside of the cell

Exoenzymes are enzymes that are secreted by cells and function outside of the cell. These enzymes are important for the breakdown of large molecules, such as nucleic acids, into smaller molecules that can be easily absorbed by the cell. In the case of DNase, the enzyme breaks down nucleic acids into smaller nucleotides, which can then be taken up by the microbe and used for energy or as building blocks for the synthesis of new nucleic acids.

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Croup is an infection of the larynx, trachea, and bronchi that causes inflammation and narrowing of the airways, making it difficult for a child to breathe. As a result, their breathing is usually noisy and raspy, and they may make a wheezing sound when exhaling.

Because croup is usually caused by a virus, antibiotics are not effective in treating it. Therefore, the appropriate response to a mother who brings her 18-month-old to the ER with croup and requests antibiotics because her primary care physician did not prescribe them would be to explain to her that antibiotics are not effective in treating croup because it is usually caused by a virus.

Therefore, option D, "Croup is usually caused by a virus, and antibiotics are not effective in treating it" would be the appropriate response. This explanation would also give the mother reassurance that her child would recover on their own without antibiotics. In such cases, the physician may prescribe steroids to reduce inflammation in the airways and alleviate the child's symptoms.

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Covering only part of a leaf with a cardboard strip is a deliberate experimental manipulation used to investigate the effects of light availability on plant responses. It allows researchers to create different light conditions and compare the physiological and developmental changes between the covered and uncovered portions of the leaf. This experimental design provides valuable insights into plant adaptation to light and the underlying mechanisms of light perception and response.

Covering only part of a leaf with a cardboard strip in a scientific experiment or observation is typically done to investigate the effects of light availability on plant physiology and development. It allows researchers to create different light conditions and compare the responses between the covered and uncovered portions of the leaf. This experimental design provides valuable insights into the role of light in various plant processes.

When a cardboard strip is placed over part of a leaf, it acts as a barrier that blocks or reduces the amount of light reaching that specific area. This manipulation enables researchers to simulate shade conditions and study the adaptive responses of plants to varying light levels.

By comparing the covered and uncovered portions of the leaf, scientists can observe and measure the differences in photosynthesis, growth, and other physiological processes. For example, they can assess how light availability affects chlorophyll production, stomatal conductance, leaf expansion, and overall plant performance.

This experimental approach also helps in understanding the mechanisms of light perception and signal transduction in plants. By examining the responses of the covered and uncovered parts, researchers can investigate how plants adjust their physiological and developmental processes to optimize light capture and energy utilization.

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Answer: Because there are multiple of each elements provided also known as a chain or "continuation"

Explanation:

H-9

O-2

C-3

N-4

If it is shown as a ring, the ring will be composed of one oxygen atom, all the rest being carbons. All the carbon atoms will have OH groups except one of the carbon atoms attached to the ring oxygen. That same carbon atom may have a continuation of the carbon chain attached (e.g., a CH2OH group or a CH(OH)CH2OH group).

The first insect in the world is Rhyniognatha hirsti.

The first insect in the world is believed to have appeared around 385 million years ago during the Devonian period. This ancient insect is known as Rhyniognatha hirsti and is considered one of the earliest and most primitive insects discovered in the fossil record.

Rhyniognatha hirsti was a wingless insect and belonged to a group called the Protura. It had a simple body structure with three pairs of legs and lacked wings or other specialized appendages. Its size was relatively small, measuring only a few millimeters in length.

As one of the earliest insects, Rhyniognatha hirsti played a significant role in the evolution and diversification of insects. It represented an important transition from their marine arthropod ancestors to terrestrial environments. The development of insects allowed for new ecological niches to be occupied, leading to the evolution of complex insect species and their subsequent dominance on land. While Rhyniognatha hirsti itself is now extinct, its existence provides valuable insights into the origins and early adaptations of insects.

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Answer:

Because oxygen is the terminal electron acceptor in the mitochondrial electron transport chain, it is essential for energy synthesis via oxidative phosphorylation.

Explanation:

Answer:

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Explanation:

This is ur answer......

To make a protein you will need 20 amino acids.....

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The electron transport chain is a complex set of biochemical reactions that is responsible for the production of energy in the form of adenosine triphosphate (ATP).

Here, correct option is A.

In the electron transport chain, electrons are transferred from one molecule to another, eventually ending up at oxygen, which is the final acceptor. During this process, energy is released and stored in the form of ATP. This energy is then used for many cellular functions, such as muscle contraction and protein synthesis.

Additionally, the electron transport chain converts acetate to ketone bodies, which are an important source of energy for cells. Therefore, the electron transport chain is an essential process that both results in the formation of ATP and converts acetate to ketone bodies.

Therefore, correct option is A.

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With a compound fracture, the bone is splintered or crushed in several places.  

A compound fracture, also known as a comminuted fracture, is a type of bone fracture in which the bone is broken into multiple pieces. This type of fracture occurs when the bone is subjected to extreme force or trauma, such as a high-speed impact or a deep penetrating wound. The treatment of a compound fracture depends on the location and severity of the injury, as well as the overall health of the patient. In some cases, surgery may be necessary to reposition the broken bones and stabilize them with pins, screws, or plates

In a compound fracture, the bone is not only broken, but it is also fragmented into multiple pieces. This can make the fracture more difficult to treat, as the pieces of the bone may need to be repositioned or stabilized before they can heal properly. Compound fractures can occur in any bone in the body, but they are most commonly seen in long bones such as the femur (thigh bone), tibia (shin bone), and humerus (upper arm bone).

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Answer:

1. True.

2. False.

3. False.

4. True.

5. True.

Explanation:

1. True: The intestines breed both helpful and harmful microorganisms. This relationship between the host and these microorganisms is called a symbiotic relationship.

2. False: A child is born with many microbes in his or her body. Basically, it has been established that there are no microbes in the womb of pregnant women (mothers) and as such babies are not exposed to any microbe until when they are born.

3. False: A child is usually born with all of microorganisms that live in the human mouth. This is false as well because the womb and placenta is essentially free of bacterias, fungi and other microbes.

4. True: The intestines are a good breeding place for microbes. This is completely true because of the regulated temperature and it mainly contains foods which the microorganisms live on.

5. True: Animals provide a means to test and understand various disease germs. Animals such as squirrels, rats, mice, frogs, monkeys are all used as specimens for testing and understanding various diseases and germs.

Answer:

Feedback loop

Explanation:

A feedback loop is a process in which the body tends to return to homeostasis if it deviates from normal conditions.

A feedback loop consists o three components a receptor, a control center and an effector.

There are two types of feedback loops namely, positive feedback loop and negative feedback loop.

In a negative feedback loop, the effect of the stimulus is to shut off the original stimulus or reduce its intensity, while in positive feedback loop, intensifies a change in the body's physiological condition.