Four elements that comprise over 95% of the human body are _____.

Answer:

Key Terms:

Herbivore: organism that eats only plants.

Carnivore:  an organism that gets energy from only animals.

Omnivore:  organism that eats both plants and animals.

Detritivore:  organism that eats dead organic matter.

Decomposer:  detritivore that breaks down organic matter into simpler compounds, returning nutrients back into an ecosystem.

Answer:

Carbohydrates.

Explanation:

It is carbohydrates because they are the good source of energy . When carbohydrates are consumed it's digestion starts from the mouth, from chewing and it mixes with saliva from the salivary gland. As it is broken down the chemical energy unlock in it is released into the body which is absorbed by the cells for cellular metabolic activities. They turns into energy as soon as they are ingested and they energy powers the brain and the whole body.

Examples of carbohydrates are wheat, whole grains, rice, bread e.t.c.

Answer:

Bed rock .!!!!!!!!!!!!

Answer:

Postsynaptic potentials are changes in the membrane potential of the postsynaptic terminal of a chemical synapse. Postsynaptic potentials are graded potentials, and should not be confused with action potentials although their function is to initiate or inhibit action potentials.

I hope it's helpful!

Answer:

occurring after synapsis

Explanation:

of, occurring in, or being a nerve cell by which a wave of excitation is conveyed away from a synapse

Answer:

hypothesis in this is just like cause and affect

Explanation:

Hypothesis means:

Noun: a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.                             "professional astronomers attacked him for popularizing an unconfirmed hypothesis"

Philosophy: a proposition made as a basis for reasoning, without any assumption of its truth.                                                                                                "the hypothesis that every event has a cause"

Answer:

b

Explanation:

Answer:

D Solar energy is needed for photosynthesis, and chemical energy in the form of glucose is needed for cellular respiration.

Explanation:

Photosynthesis is a physiochemical process by which photosynthetic organisms transform light energy into chemical energy in the form of reducing power (as NADPH) and ATP. These chemicals are used to drive carbon dioxide fixation.

Cellular respiration is an oxidative process in which free energy released from organic compounds is used in the formation of ATP. Carbohydrates are most commonly used as respiratory substrate.

Aerobically trained muscles burn fat more readily than untrained muscles.

Aerobic exercise refers to activities that increase the body's need for oxygen, such as running, cycling, or swimming. Regular aerobic training leads to physiological adaptations in the muscles, enhancing their ability to utilize oxygen efficiently. These adaptations include an increase in the number and size of mitochondria (the "powerhouses" of cells responsible for energy production), improved blood flow, and increased oxidative enzyme activity.

During aerobic exercise, the body primarily relies on aerobic metabolism, which utilizes oxygen to break down nutrients and produce energy. The primary fuel source for aerobic metabolism is fat. When the body has sufficient oxygen supply, fatty acids from adipose tissue and muscle triglycerides are mobilized and transported to the mitochondria within muscle cells. There, fatty acids undergo a series of chemical reactions called beta-oxidation to generate energy in the form of adenosine triphosphate (ATP).

Aerobically trained muscles have an increased capacity for fat oxidation due to the adaptations mentioned earlier. They have a higher number of mitochondria and more oxidative enzymes, enabling them to efficiently metabolize fatty acids and produce ATP. Consequently, trained muscles are better able to utilize stored fat as an energy source during aerobic activities, which is why fat is burned more readily in aerobically trained muscles compared to untrained muscles.

It's important to note that while fat is the primary fuel source for aerobic metabolism in trained muscles, other substrates such as glycogen (the stored form of glucose) and even protein can also contribute to energy production during prolonged exercise. However, fat oxidation remains the dominant pathway in well-conditioned muscles due to the body's ability to spare glycogen stores and preserve muscle protein.

In conclusion, aerobically trained muscles have a greater capacity to burn fat as a fuel source during exercise. This adaptation is a result of increased mitochondrial density, improved blood flow, and enhanced oxidative enzyme activity, enabling these muscles to efficiently utilize fatty acids and produce ATP through aerobic metabolism.

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Answer:

chordate

the answer is chordate the phylum that sea turtles are in is chordate

Answer:

Chordate

Explanation:

hope it helps

The target heart rate range for an 18-year-old with a resting heart rate of 60 who wants to work between 60 and 80 percent of her maximum heart rate is 141.2 bpm to 170.6 bpm.

Using the Karvonen Method:

The maximum heart rate (HRmax) :

HRmax = 220 - age.

For an 18-year-old, the maximum heart rate (HRmax) will be:

HRmax = 220 - 18

HRmax = 202 bpm

Therefore, the maximum heart rate (HRmax) for an 18-year-old is 202 bpm.

Heart rate reserve (HRR) :

HRR = HRmax - RHR (Resting Heart Rate).

RHR is the resting heart rate of the individual. For an 18-year-old with a resting heart rate of 60 :

HRR = HRmax - RHR

HRR = 202 - 60HRR = 142 bpm

Therefore, the heart rate reserve (HRR) for an 18-year-old is 142 bpm.

The target heart rate - 60% (THR 60%) :

THR 60% = (HRR x 0.6) + RHR

THR 60% = (HRR x 0.6) + RHR

THR 60% = (142 x 0.6) + 60

THR 60% = 141.2 bpm

Therefore, the target heart rate - 60% (THR 60%) for an 18-year-old is 141.2 bpm.

The target heart rate - 80% (THR 80%) :

THR 80% = (HRR x 0.8) + RHR

THR 80% = (HRR x 0.8) + RHR

THR 80% = (142 x 0.8) + 60

THR 80% = 170.6 bpm

Therefore, the target heart rate - 80% (THR 80%) for an 18-year-old is 170.6 bpm.

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Species 1: Australopithecus afarensis existed approximately 3.9 to 2.9 million years ago in East Africa, specifically in regions such as Ethiopia, Kenya, and Tanzania. This species is known for the famous fossil specimen "Lucy." Australopithecus afarensis had a combination of ape-like and human-like characteristics, walking on two legs but with a small brain size.

Species 2: Homo habilis lived around 2.1 to 1.5 million years ago in East Africa, including Tanzania, Kenya, and Ethiopia. Homo habilis is considered one of the earliest members of the Homo genus and is known for using stone tools. This species had a larger brain size and more human-like features compared to Australopithecus afarensis.

The relationship between these two species is that Homo habilis is considered to be a direct descendant of Australopithecus afarensis. It is believed that Homo habilis evolved from Australopithecus afarensis, representing an important evolutionary transition from the Australopithecus genus to the Homo genus. This transition likely involved changes in brain size, tool use, and other physical and behavioral adaptations. The presence of Homo habilis indicates a significant advancement in human evolution and lays the foundation for the later emergence and development of our own species, Homo sapiens.

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The correct answer for this question is Turner syndrome, caused by the lacking a sex chromosome due to nondisjunction fused with a gamete carrying an X chromosome.

Turner syndrome is a condition that  affects females and is caused by deleted or missing X chromosomes. Numerous physical and developmental issues, including small stature, inability of the ovaries to mature, and cardiac anomalies, can be brought on by Turner syndrome.

Turner syndrome can be detected at any stage of life, including pregnancy, early childhood, and infancy. Sometimes the diagnosis of Turner syndrome in girls with minor indications and symptoms is not made until the adolescent or young adult years. Turner syndrome patients need constant medical treatment from a range of experts.

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Answer:

A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. Substances are either chemical elements or compounds.

Composite sampling technique can be utilized to collect sample with collection done in every 2-3 years and by following precautionary steps to avoid contaminaton.

a) Since the garden soil is fairly homogenous, composite sampling will provide a more accurate and representative assessment of the nutrient levels across the entire area.

b)  The frequency of sample collection depends on various factors such as the variability of nutrient levels, previous fertilizer applications, and the specific needs of the vegetable crops. Usually, it is recommended to collect soil samples every 2-3 years for routine analysis.

c) The precautionary steps that can be taken include:

1. Use clean and sterilized sampling tools, such as a soil probe or shovel, to collect the soil samples.

2. Avoid touching the samples directly with bare hands to prevent transferring contaminants.

3. Avoid sampling areas near potential sources of contamination, such as compost piles or heavily trafficked areas.

4. Clean and sterilize the sampling tools between each sample collection to prevent carry over of soil or nutrient residues.

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The possibility of experiencing severe and perhaps fatal symptoms of the illness is a drawback of building immunity by being exposed to the bacteria that cause pertussis (also known as whooping cough).

The negative effects of the whole-cell pertussis vaccination are uncommon but significant. Whole-cell pertussis vaccines can occasionally cause protracted sobbing, febrile convulsions, and, very rarely, hypotonic-hyporesponsive episodes, in addition to the typical local inflammatory effects and fever seen with many vaccines.

It has been proposed that greater vaccine failure rates are a result of genetic alterations in PT, PRN, and FIM in circulating B pertussis strains brought on by vaccination.

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graduated cylinder or a buret can be used to measure the volume of liquids.

Speedometers, measuring tape, thermometers, compasses, digital angle gauges, levels, laser levels, micrometers, measuring squares, odometers, pressure gauges, protractors, rulers, angle locators, bubble inclinometers, and calipers are examples of common measuring tools.

The three measurements are:

The above enables us to convey the volume

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The ciliary body is responsible for lens accommodation and it attaches via the zonular fibres.

This is referred to as the sense organ that allows us to see and this is done by taking in light from the world around us and then sending visual information to the brain.

The eye has various parts of the body such as the ciliary body which is an extension of the iris, the colored part of the eye is responsible for lens accommodation and produces the fluid in the eye called aqueous humor.

They attach to the lens through zonular fibres which is a ring of fibrous structures that help to maintain the position of the lens in the optical path and also anchor muscles that change the shape of the lens to alter focus thereby making it the correct choice in this scenario.

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According to the given statement Cereal grains have the least water content, claims the assertion.

A plant's leaves are what lettuce, kale, spinach, and cabbage are. How about beans? Because there is one instance when consumer jargon resembles botany's, they are simpler. The family of plants known as legumes all contain the same kind of fruit, which is actually a bean but is referred to as a legume.

These foods combat inflammation because they are rich in antioxidants, pro government compounds, fiber, and protein. You should have black legumes, lentils, black-eyed peas, red veggies, or dark-skinned pearls at least twice each week.

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Answer:

The presynaptic membrane is formed by the part of the presynaptic axon terminal forming the synapse and that of the postsynaptic neuron is called the postsynaptic membrane. The space between the presynaptic and postsynaptic membrane is called the synaptic cleft. These three structures together form the synapse.

Explanation:

The organisms that perform binary Fission are Bacteria, Hydra and White potato.

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Thermoreceptors communicate with the hypothalamus by detecting changes in temperature.

The cardiac tissue in your heart is an example of tissue, which is a component of a living thing's body formed of similar cells. A tissue is another soft, delicate piece of paper that is used for wiping tears and noses.

Tissue is a collection of cells with a common structure and function that work as a single unit. The body's tissues give it form and aid in energy storage and heat retention. Connective tissue, parenchyma cells, muscle tissue, and nervous tissue are the four different types of tissues.

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isn't coming income so that

The Central Dogma of biology is the theory that describes how genetic information flows within a biological system. The process involves the transfer of genetic information from DNA to RNA and then to proteins.

Proteins are the building blocks of living organisms and are involved in various biological functions. DNA carries the genetic code for the synthesis of proteins. The central dogma is a two-step process, which is necessary to make proteins. The first step is the transcription process, where genetic information is transcribed from DNA to RNA. The RNA molecule produced from transcription serves as a messenger and carries genetic information to the ribosome. The ribosome is the site of protein synthesis. In the second step, called translation, the ribosome reads the genetic code from the messenger RNA and synthesizes a protein. The genetic information is translated from the language of nucleotides to the language of amino acids. The ribosome reads three nucleotides at a time, known as a codon, and matches each codon with the appropriate amino acid. In conclusion, the central dogma of biology explains the process of genetic information flow from DNA to RNA and then to proteins. A two-step process is necessary to make proteins, which involves transcription and translation. Transcription produces RNA, which carries the genetic information to the ribosome. Translation involves the ribosome reading the genetic code and synthesizing a protein.

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The gray matter of the two halves of the thalamus is divided by a vertical sheet of white matter called the internal medullary thalamus.

On cross sections of the thalamus, layers of myelinated fibres are seen as medullary laminae. They are also known as medullary layers of the thalamus or laminae medullares thalami. The thalamus is divided into lateral, medial, and anterior regions by the internal medullary lamina, a thin, vertical strip of white matter that bifurcates in its anterior portion.

The intralaminar nuclei are enclosed by the laminae medullaris medialis (interior medullary lamina), which is located between the dorsomedial and ventral nuclei of the thalamus (centromedian nucleus, paracentral, and central lateral).

Therefore, gray matter of the two halves of the thalamus is divided by a vertical sheet of white matter called the internal medullary thalamus.

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The percentage yield of this reaction is equal to 90.6%

To figure this out, we need to balance the equation. The balanced equation is: SiO2 + 3C → SiC + 2CO

These masses are found by adding up the mass of each element that makes up these compounds.

The formula is Percent yield = (actual yield ÷ theoretical yield) × 100%

Percent Yield = (29.2 g ÷ (0.8115 mol × 40.10 g/mol)) × 100%

Percent yield = 90.6%

Therefore, we can conclude that the percentage yield of the reaction is 90.6%

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Answer: negative

Explanation:

Answer:

C

Explanation:

Biodiversity measures the variety of organisms in an ecosystem. Allowing hunters to hunt alligators depletes the alligator population which decreases biodiversity. Legalizing monkey hunting depletes the population which decreases bio diversity. Deforestization rids animals of their habitats which massively decreases biodiversity due to the plants, trees, and animals destroyed in the process. That and the fact that there will be less sites for nesting and homes for the animals which will decrease biodiversity even more over time. It's all connected.

Protecting a species conserves the population and ensures the safety of the animal especially from human interference. This allows the animal (specifically the black bear) to survive in its habitat unharmed and allows it to play its role in the ecosystem and contribute to biodiversity.

One source of carbon dioxide that moves from blood to the alveoli is cellular respiration.

Cellular respiration is the process by which cells produce energy from glucose and oxygen, resulting in the formation of carbon dioxide as a waste product. This carbon dioxide needs to be removed from the body to maintain a balanced internal environment.

In the circulatory system, blood carries the carbon dioxide from cells to the lungs. Hemoglobin, a protein in red blood cells, plays a crucial role in transporting carbon dioxide. When blood rich in carbon dioxide reaches the capillaries surrounding the alveoli, a gas exchange process known as diffusion occurs.

During diffusion, carbon dioxide moves from an area of high concentration in the blood to an area of low concentration in the alveoli. This movement is facilitated by the thin walls of the alveoli and the capillaries, which allow for efficient gas exchange. Once the carbon dioxide enters the alveoli, it is expelled from the body when we exhale.

In summary, cellular respiration generates carbon dioxide as a waste product, which is transported by blood and hemoglobin to the lungs. The carbon dioxide then diffuses from the blood into the alveoli, where it is expelled from the body during exhalation.

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