Most enzymes are changed by the
reactions they catalyze true or false

Biodiversity is the variety of life on Earth across all ecological roles. Biodiversity hotspots are areas that have an increased number of species and high numbers of individual organisms in those species. Examples of biodiversity hot spots are tropical rainforests and coral reefs.

Coral reefs have high levels of biodiversity because of their huge microhabitats, high levels of nutrients, and high levels of sunlight and warm temperatures. Coral reefs are home to many microhabitats. These are small habitats within an ecosystem that help unique niches for organisms to evolve. They are also located in warm, shallow waters rich in nutrients. The high level of sunlight in these areas promotes plant and algae growth which can provide a strong base for the ecosystem.

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Answer:

Spanish: La evolución es el proceso por el cual los organismos actuales se han descendido a partir de antepasados antiguos. ... La variabilidad genética es una parte fundamental del proceso, ya que la evolución se produce cuando fuerzas selectivas actúan sobre esa variabilidad.

English: Evolution is the process by which current organisms have been descended from ancient ancestors. ... Genetic variability is a fundamental part of the process, since evolution occurs when selective forces act on that variability.

Explanation:

Answer: I'm pretty sure it's the first one

Explanation: I don't know for sure but I'm pretty sure when I learned it they said that extrusive is above ground and intrusive is below ground. Don't take my word for 100% though

The Koala (Phascolarctos cinereus) is a native species of Australia that belongs to the marsupial family Phascolarctidae. Koalas are known for their distinctive appearance, including their large ears, round faces, and fluffy, gray-brown fur.

Koalas have a specialized niche in their ecosystem, as they are highly specialized herbivores that feed exclusively on eucalyptus leaves. They have a long, sticky tongue that allows them to extract nutrients from the leaves, and they have a unique digestive system that is able to process the toxic compounds found in eucalyptus leaves.

The Koala's niche has a significant impact on the ecosystem. Eucalyptus leaves are an important food source for many other animals, including birds and insects, so the Koala's feeding habits help to maintain a balance in the ecosystem.

Additionally, Koalas play a role in seed dispersal, as they often defecate the seeds from eucalyptus leaves in their feces, which helps to spread the seeds and promote new growth.

Overall, the Koala's niche as a specialized herbivore that feeds on eucalyptus leaves is important for maintaining the health and balance of their ecosystem, and it helps to support the survival of many other species in the region.

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structural

This is because the toucan has now evolved over time. this is to reach narrow fruits with its beak. the plant has also evolved over time. this is to make sure that the plant doesnt rot.

Answer:

so i noticed the other person didn't actually answer so here is the answer and it is correct

Explanation:

convergent- north america and the pacific, shearing force, destroys, slab-pull

divergent- mid atlantic ridge, tension force, created, slab-push

A convergent boundary is defined as the places that collide with each other where the heavier plate slides under the lighter plate in a process known as subduction. The collision causes lithospheric deformation. It maybe ocean-ocean, continent-continent, and continent-ocean convergence.

At a divergent plate boundary, a new plate is formed at the separation of plates which is caused by slab push. Divergent boundaries within continents produce rifts, which eventually become rift valleys.

Thus, Convergent boundary : Pacific and north America, crust is destroyed, slab pull, shearing force.

Divergent boundary : Mid Atlantic ridge, crust is created, slab push, tension force.

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Answer:

D

Explanation:

The literal definition of genetic engineering is the deliberate modification of the characteristics of an organism by manipulating its genetic material.

D. Altering the chemical structure of alloys to create better characteristics.

is the best example of Genetic Engineering

Genetic engineering (also called genetic modification) is a procedure that makes use of laboratory-primarily based technologies to alter the DNA makeup of an organism. this could involve changing a single base pair (A-T or C-G), deleting an area of DNA, or including a brand new segment of DNA.

Genetic engineers alter, splice, eliminate, and rearrange genes a good way to modify an organism or groups of organisms.

uses of genetic engineering

In Medicine: Genetic engineering can be applied to:

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The statement predicts how the stream's ecosystem will most likely be impacted is the number of fish in the stream will decrease.​ Thus, option D is correct.

The acidity of the water in a stream is indicated by its pH. Historically, a certain stream has had a pH of 6.0. Acid rain has caused the stream's pH to become 4.8.The flow rate of the stream will decrease. The number of fish in the stream will increase and the number of fish in the stream will decrease.​

Acid rain is a form of rain with high concentration of hydrogen ions and is acidic in nature. pH of these rains is low and pH is the negative logarithmic of hydrogen ion concentration. It is known as power of hydrogen.

The animal which has the lowest value of pH will be able to tolerate the acid rain more and will be last to die. From the tolerance range of the animals, frogs has the lowest pH for survival which is 4 and it can bear more acid rain than the rest of the animals will be the last to die.

Therefore, The statement predicts how the stream's ecosystem will most likely be impacted is the number of fish in the stream will decrease.​ Thus, option D is correct.

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The transport properties that involve the elimination of concentration differentials are Diffusion, Osmosis , Active Transport and Bulk Flow.

Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration. It occurs due to the random motion of particles and is driven by the concentration gradient until equilibrium is reached. Osmosis is the diffusion of water molecules across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. It aims to equalize the concentration of solute on both sides of the membrane.

Active transport is a process that requires the expenditure of energy to move molecules or ions against their concentration gradient. It involves the use of carrier proteins embedded in the cell membrane to transport specific substances across the membrane. Bulk flow is the movement of fluids, such as blood or sap, in response to a pressure gradient. It involves the coordinated movement of a large number of molecules or ions in a particular direction.

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True. Selective pressures that drive natural selection depend on the environment in which an organism lives. This means that the physical properties of the environment, such as temperature, moisture, and light, can be the selective forces involved. Other factors, such as competition for resources and predation, can also be important selective pressures.

While the physical properties of the environment certainly play a critical role in shaping the selective pressures that drive natural selection, it is important to note that other factors can also contribute to the selection process. For example, biotic factors such as competition for resources, predation, and disease can exert strong selective pressures on organisms. Additionally, the behavior of organisms can also play a role in shaping selective pressures; for example, a bird's choice of nesting site or a plant's method of seed dispersal can influence the success of individuals and thus the direction of selection.

Furthermore, it is important to recognize that the environment is not a static entity, but rather a dynamic and ever-changing system. Environmental fluctuations and disturbances can have profound effects on the selective pressures experienced by organisms and can lead to the emergence of novel traits and adaptations. Overall, while the physical properties of the environment are important selective forces, it is important to consider a broad range of factors that can influence natural selection.

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Answer:

A life scientist would most likely study algae

Explanation:

weather isn't "living", electricity isn't "living", stars and planets are living, but there's a chance for a very very rare star rebirth. Where one specific star rebirths itself somehow, so algae would be the studied option by a scientist.

In order for osteocytes, which are cells found within bone tissue, to access nutrients and oxygen, they rely on a network of small canals called canaliculi.

These canaliculi are formed as a result of extensions from the osteocytes that connect to neighboring osteocytes as well as to larger blood vessels and capillaries that run through the bone. Through these canaliculi, osteocytes are able to exchange nutrients, oxygen, and waste products with nearby blood vessels.

The process of exchanging these substances occurs via diffusion, which is the movement of particles from an area of high concentration to an area of low concentration. This process allows osteocytes to maintain their metabolic functions and ensure that the bone tissue remains healthy and strong. The Canaliculi system is a crucial feature of bone tissue that enables osteocytes to communicate and access the necessary nutrients and oxygen to function properly.

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Answer: pls see the attached image {hope it makes sense}

Ceruminous glands are found in the external acoustic meatus, which is option D.

The external acoustic meatus (EAM), also known as the ear canal, is the short, narrow tube that links the outside of the ear to the middle ear. The ear canal is protected by specialized glands called ceruminous glands, which produce earwax (cerumen).These glands, also known as ceruminous glands, are found in the external acoustic meatus. They produce a sticky substance known as cerumen, which helps to trap foreign substances such as dust, dirt, and other particles that enter the ear.

The substance aids in keeping the ear clean and healthy by acting as a natural lubricant. The earwax keeps the skin in the ear canal moisturized and aids in preventing infections. The ceruminous glands are tiny, sweat gland-like structures that are located in the skin of the outer ear canal. They are usually accompanied by hair follicles that are attached to the skin of the ear canal and act as a natural defense against foreign bodies.The bony labyrinth, inner ear, and auditory tube are all parts of the ear, but they do not contain ceruminous glands.

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Answer:

The correct answer is - in the ribosomes.

Explanation:

The translation is the process that takes place in the ribosomes attached to the endoplasmic reticulum where they decode the codons present in the form of the mRNA to the amino acid chain with the help of tRNA.

Ribosomes are called the factory of the protein. It involves triplet code to translate into the amino acid sequences to produce polypeptide chains or protein.

Thus, the correct answer is - in the ribosomes.

If you were to draw a short segment of DNA, the features that you would include are double-stranded, helical shape, chains of nucleotides, nucleotides base paired with T bonded to A and C bonded to G.

When drawing a short segment of DNA, it is important to represent its key features accurately. DNA is double-stranded, meaning it consists of two complementary strands that are connected through base pairing. The strands have a helical shape, resembling a twisted ladder or spiral staircase. DNA is composed of chains of nucleotides, which are the building blocks of DNA.

These nucleotides consist of a nitrogenous base RNA and DNA (adenine, thymine, cytosine, or guanine), a sugar (deoxyribose), and a phosphate group. The nucleotides are base paired with T (thymine) bonded to A (adenine) and C (cytosine) bonded to G (guanine) through hydrogen bonds. These base pairs form the rungs of the DNA ladder. The nucleotides are connected by the sugar-phosphate backbone, which gives stability to the DNA molecule.

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The correct pairing of DNA bases are: Adenine pairs with (D)Thymine (A-T) and Cytosine pairs with Guanine (C-G) through hydrogen bonding between their nitrogenous bases in a double-stranded DNA molecule.

The base pairing in DNA is a fundamental aspect of its structure and function. The sequence of the bases in DNA encodes genetic information that is responsible for determining the traits of an organism. The correct base pairing ensures that this information is accurately transmitted from one generation to the next during DNA replication.

Incorrect base pairing, such as those in options A, B, and C, can lead to mutations in the DNA sequence, which can have detrimental effects on the organism's development and health. For example, mutations in the DNA sequence can disrupt the normal functioning of genes, leading to the development of diseases such as cancer. Therefore, it is important to understand the correct base pairing in DNA to fully appreciate its role in genetic inheritance and to develop strategies to prevent or treat genetic diseases.

Therefore, the correct option is D. Thymine, cytosine

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A population is in Hardy-Weinberg equilibrium if the genotype frequencies of the population are equal to the expected frequencies of the next generation, that is, if:

The frequencies of the population are:

P= f(SS)= 0.9025

H= f(Ss)= 0.095

Q= f(ss)= 0.0025

The population of frogs has 8000 individuals, 20 of which are homozygous recessive for the trait "being spotted"

Assuming Hardy-Weinberg equilibrium you can calculate the frequency of the recessive allele as follows:

The genotypic frequency of the homozygous recessive is

Apply the square root to determine the value of q:

The allelic frequencies are complementary, which means that they add up to 1, knowing the value of q you can calculate the frequency of the dominant allele p:

Predict the genotype frequencies of the offspring on equilibrium:

Homozygous dominant SS

Heterozygous Ss

Homozygous recessive:

Compare the results:

As you can see the genotype frequencies of the current population are equal to the genotype frequencies of the original population, you can say that the population is in Hardy-Weinberg equilibrium.

Once the population reaches equilibrium it does not change, i.e. the frequencies are the same from one generation to the other, unless some outer factors, like deforestation, create a drastic change in the genetic pool (for example, by eliminating/ adding individuals or isolating small portions of the population)

On the other hand, if the population is evolving, i.e. the genotypic frequencies are changing, and the observed genotype and allele frequencies will change from one generation to the next one.

If you concluded that the population is in equilibrium, then it is not possible for it to be evolving as the frequencies do not change for a population in equilibrium as they do when the population is evolving.

This means that the population is not evolving.

Answer:

D.)Moss and lichen

Explanation:

Dart Frog: The aposematism adaption, which gives the Dart Frog its vibrant look, is used. To prospective predators, aposematism serves as a warning indication that the frog is dangerous or venomous.

Predators are visually warned to keep away and prevent predation by the vivid colors, which serve as a visual deterrent. This modification helps the frog survive by decreasing its risk of being eaten or assaulted.

Hosta Plant: The Hosta Plant's large leaves are an adaptation that permits the plant to absorb the most sunlight possible. We refer to this adaption as broad-leaf morphology. While the sun is out, the plant may use its huge leaf surface area to absorb as much sunlight as it can for photosynthesis. The Hosta Plant can provide the energy required for growth and life by maximizing sunshine absorption.

Contrasting the Hosta plant's and the dart frog's adaptations:

Purpose:

The dart frog's vibrant colors act as a warning to predators about its toxicity and serve to ward off possible assaults.

Hosta Plant: The broad leaves efficiently absorb sunlight for effective photosynthesis.

Modality of adaptation

Dart Frog: The adaptation primarily functions as a visual warning signal that is advantageous for predator protection.

Hosta Plant: The modification is a morphological trait that improves the plant's capacity for sunlight absorption.

Signaling system:

Dart Frog: The vivid colors serve as a visual cue to potential predators alerting them to its toxicity.

Hosta Plant: The big leaves enhance the surface area for capturing light but do not act as a signal to other living things.

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Answer:

Following are the solution to the given points:

Explanation:

In point a:

When a light absorption dye was to be introduced to optimize the plant's absorbing capacity, the paint could absorb wide different wavelengths besides the observable light spectrum. It must also absorb the UV only at IR light rate to maximize the fluorescence intensity.

In point b:

Its molecule in the production of pentose sugar is the nitrogen and hydrogen atoms of carbon dioxide and water ions of air. Its water oxygen atoms are emitted through oxygen atoms during this phase.

In point c:

Its plant increased with weight while decreasing the weight of the earth, so because manufactured goods needed for plant growth are carbon dioxide from water and air, provided to a plant every day and nitrogen extracted from of the atmosphere through means of microbial materials into nitrogen. So, even if the plant raised its weight, the soil does not change the weight.

Plastic can contribute to environmental issues by polluting and harming many species. There is a large amount of plastic trash in the ocean that have already caused problems to marine ecosystems. It happens because plastic takes up to 400 years to decompose, releasing toxins and sticking around the environment. It harms not only marine ecosystem, but all the nature can be affected by it. There is also a large amount of plastic trash on land, affecting habitats and species.

Answer:

Remove and lower.

Explanation:

Cells of the excretory tubule remove water by osmosis, from which we can conclude that the solute concentration in these cells must be lower than in the filtrate. The excretory tubule remove excess amount of water from the cell through semi permeable membrane of the cell while on the other hand, the solute concentration in the cell is lower as compared to filtrate so that's why it can't diffuse from the cell by the process of osmosis.

The abnormal condition you are referring to is called otosclerosis, which is the stiffening of the tiny bones (ossicles) in the ear.

Otosclerosis is a progressive condition that affects the movement of the ossicles, particularly the stapes bone, within the middle ear. The stapes bone plays a crucial role in transmitting sound vibrations from the outer ear to the inner ear. In otosclerosis, abnormal bone growth occurs around the stapes, leading to its fixation or immobility.

This condition often results in conductive hearing loss, where sound waves are not efficiently transmitted to the inner ear. Symptoms may include gradually worsening hearing loss, tinnitus (ringing in the ear), and dizziness or balance problems in some cases.

The exact cause of otosclerosis is not fully understood, but genetic factors and hormonal changes, such as those occurring during pregnancy, are believed to play a role. Treatment options range from hearing aids to surgical interventions like stapedectomy or stapedotomy, which aim to restore hearing by replacing or modifying the affected bone.

It is important to consult with an ear, nose, and throat specialist (otolaryngologist) or an audiologist if you suspect you have otosclerosis or are experiencing any hearing-related issues. They can provide an accurate diagnosis and recommend appropriate treatment options based on your specific condition.

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By the process of crossing over exchange of chromatid and it occurs between homologous chromosomes.

Crossing over occurs during meiosis. Crossing over is important for recombination and through recombination genetic material of the mother is transferred within the next generation. During crossing over chiasma formation occurs, which has two different loci of homologous chromosomes and results in transfer of genetic material.

And recombination fulfills the requirement of heredity. Hereditary is the process that includes the transfer of traits from one generation to another. There are three types of recombination; 1- homologous recombination, 2- non homologous recombination and 3- site specific homologous.

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An epidural increases the chance of having a cesarean section, the correct option is B.

An epidural is a regional anesthesia technique commonly used during labor to provide pain relief to the mother. While it effectively reduces the pain experienced during childbirth, it can also have certain effects and potential risks. One of the most common problems associated with epidurals is an increased likelihood of cesarean section.

When an epidural is administered, it can lead to a decrease in the mother's ability to feel and control her contractions. This can result in a longer labor process and potential complications, such as fetal distress or an inability to progress in labor. The correct option is B.

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The question is inappropriate; the correct question is:

Carlo, in labor with her first child, is in a great deal of pain and has been experiencing strong contractions for nearly 12 hours with little progress toward birth. Although Carla was hoping for a natural birth, her doctor has urged her to use an epidural. Which of the following problems occurs most often following an epidural?

A) Newborns are at high risk for birth complications like cerebral palsy.

B) An epidural increases the chance of having a cesarean section

C) An epidural speeds up the labor process.

D) The mother loses consciousness prior to delivery