Answer:
Explanation:
The four elements been referred to here are hydrogen, oxygen, carbon and nitrogen.
These four elements constitute the majority of the human body because of a combination of factors. Although, some of these factors are the major reasons, for instance the human body is made up of cells which are the basic structures of life. The cell consists of over 70% of water (which is made of hydrogen and oxygen). Also, oxygen is inhaled through the process of respiration which combines with other molecules (such as haemoglobin to form oxyhaemoglobin) in the human body. These among others make oxygen the most abundant element in the human body.
Naturally occurring organisms usually have a high concentration of organic molecules (molecules made of majorly carbon and hydrogen). This makes the human body have a high percentage (after oxygen) of carbon and hydrogen. Also, carbohydrates (which are later converted to glucose) form a large part of our diet and are stored in the body as glycogen (causing the body to have a high amount of carbon and hydrogen atoms).
Nitrogen is an essential part/element found in amino acids which are building blocks of protein. Proteins are involved in several metabolic activities in the body; this makes the abundance of nitrogen the fourth (one of the four) most common element in the body. It should be noted that amino acids also have carbon and hydrogen elements also.
The combination of the factors above among some other factors make the human body comprise mainly of these four elements
Living organisms like animals and plants are primarily made up of carbon, nitrogen, oxygen, and hydrogen.
Humans are primarily composed of four elements hydrogen, oxygen, carbon, and nitrogen.
The four elements that are primarily found in the human body play a crucial role in the developmental, physiological, and chemical processes of the body.
The human body is made up of cells, which constitute these elements and are 70% water. Oxygen is vital for the respiration process, in which complex substances are broken down to yield energy.
Carbon and hydrogen are organic molecules that make up the essential nutrients of the body such as carbohydrates and proteins.
Thus, the combination of these elements is required for the development and survival of organisms.
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Which evolutionary mechanism causes beneficial traits that are heritable to become more common in a population?
Answer:
Natural Selection.
True or false: There is one universal scientific method that all scientists use?
Answer:yes
Explanation:scientific method
Explain the difference between physical and chemical properties. Provide an example of each.
Answer: A physical property is when something can be observed or measured without being changed. A chemical property is when a substance undergoes a specific chemical change. Examples of physical property are color or density. Examples of chemical properties are flammability or heat of combustion.
I hope that this helps you !
The difference between physical and chemical properties of a substance depend on the fact that they affect the substance physically or affects its properties and identity.
Substances have characteristics that help in identify and thus classify them. Two of the broad classifications of these would include the chemical and physical properties of a particular substance.
Physical properties are those that can be identified without changing the identity of the substance.change in the physical appearance of matter such as color, density, hardness , are examples of physical properties.Properties that describe how a substance changes into a completely different substance are called chemical properties.Flammability and corrosion resistance are examples of chemical properties.Thus, the physical and chemical properties of a substance depend on the fact that they affect the substance physically or affects its properties and identity.
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This sample can then be sent to a lab for ____________ , so the cells can be observed under a microscope for abnormalities.
Answer:
Histological examination
Explanation:
This sample can then be sent to a lab for histological examination , so the cells can be observed under a microscope for abnormalities.
Histological examination Involves the careful analysis of cells and tissues usually under a microscope to determine if there is any problem.
movement of food through your digestive system
Can Brainly take pics of a problem to solve
Answer:
No
Explanation:
You upload pictures for others to help you but brainly doesn't solve answers directly
Name the main energystoring products of each phase of photosynthesis.
Explanation:
During the first stage of photosynthesis, called the light-dependent reaction, sunlight excites the electrons in the chlorophyll pigment. The organism uses this energy to create the energy carrier molecules ATP and NADPH, which are crucial for carbon fixing during the second stage.
The first two stages of photosynthesis depend directly on light because light energy is used to make ATP and NADPH. In the final stage of photosynthesis, ATP and NADPH are used to produce energy-storing sugar molecules from the carbon in carbon dioxide.
What does the saying, "What we eat
determines how well our digestion works", means?
say you eat mcdonalds everyday and all that grease and artifical flavorings that weakens ur umune system but if u eat ur fruits,veggies, protiens,and exc ur ummune system is stronger than those who eat mcdonalds all day
Is controlling homeostasis a conscious or unconscious process?
Answer:
It is an unconcious process
Explanation:
Homeostasis is when the body is made sure to have a constant environment inside so that the body can work at it's optimum conditions .... constant temperature, constant pH etc ... you do sweat when you feel hot but you can't control it... your mind just tells it to... vadodilation and vasoconstriction for a constant temperature occurs for a constant temperature as well(when vessels dilate and constrict), your mind allows the vessels to do so without you thinking about it.
Homeostasis is an unconscious process.
Homeostasis can be defined as the ability of the organism to maintain the internal environment constant with respect to the changes occurring in the external environment. The steady state of the body can be achieved by the regulation of body temperature, pH, and metabolism. These changes are controlled by the hypothalamus gland in the human body which is without our conscious state of awareness. Some of these changes are control of heart rate, body temperature, and blood pressure.Hence, controlling homeostasis is an unconscious process.
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1.Karyose" comes from a Greek word that means "kernel," and “promeans "before." Based on this information, prokaryotic means– 2.What is the structure of prokaryotic cells?
Answer:
The Prokaryotic Cell
Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid
please give brainlist
hope this helped...
Which of these reasons for peer review did you include in your response? Check all of the boxes that apply. to identify possible errors to justify the conclusions made to reduce the chance of bias to uphold the standards of the journal to maintain professional standards to improve the strength of the results
Answer
to justify the conclusions made
to uphold the standards of the journal
to maintain professional standards
Explanation:
to identify possible errors
to justify the conclusions made
to reduce the chance of bias
to uphold the standards of the journal
to maintain professional standards
to improve the strength of the results
The more time people spend using social media, the less they read books.
Independent Variable:
Dependent Variable:
Answer:
Independent: Time on Social Media
Dependent: Less books read.
An independent variable in an experiment is a variable whose outcome is not affected by other variables present in the experiment. while
A dependent variable is a variable whose outcome is directly determined/affected by changes made by an independent variable in the experiment.
The number of books read is a dependent variable because it depends on the amount of time spent on social media ( independent variable ).
Hence we can conclude that the Independent variable in the experiment is the time spent on social media while the number of books read is a dependent variable.
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What would happen if people stopped burning fossil fuels? *
Climate change would be reduced
Plants would struggle to grow
Ocean water would become more acidic
The atmosphere would heat up faster
Answer:
Even if we stopped burning fossil fuels, the Earth would continue warming up for another few decades because of all the heat we've already produced. Global temperatures would climb – finally stabilizing at a level much higher than we've ever known.
what's the answer??
n
Ascientist performs an investigation and discovers that increased temperature decreases the number of offspring that an
organism produces. Then, the scientist asks a new question about the impact of climate change on the species because
O the scientist's first question was not a scientific question.
the scientist modified the hypothesis for the investigation.
the results of the investigation led to new scientific questions,
questions about the impact of temperature reflect an opinion.
Mark and retum
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US 18:0
Answer:
the results of the investigation led to new scientific questions
Explanation:
The basis of every scientific question asked is an observation made. Scientific questions are questions that emanate from an observed problem and leads to the formation of a testable explanation (hypothesis). In this question, an investigation was made by a scientist and it was discovered that increased temperature decreases the number of offspring that an organism produces.
However, the scientist asks a new question about the impact of climate change on the species. This is because an observation has been made again, from the previously concluded investigation. Hence, after completing the investigation about the effect of temperature on the number of offsprings an organism can produce, an observation was made, ultimately leading to a new scientific question.
Answer:
c
Explanation:
Phase changes occur when _____ is gained or lost from a substance.
Which is a traditional flood control method used to keep a stream’s flow in its channel?
Answer artificial levees
Explanation:
True or false: Some populations that are considered to be separate species can interbreed and produce fertile offspring.
Answer:
False/true
Explanation:
Separate species can't interbreed, but there is some instinses that they can, for example the tiger and lion.
HELP PLSSSSS what is the scientific process described detailed.
Answer:
Basically Question, Research, Hypothesis, Experiment, Analysis, and Conclusion
Answer:
a list of what ur supposed to do in science
Explanation:
HELP ASAP I HAVE 10 MINUTES TO GET DIS DONEEEEEEEEEEEE
which of the following are prokaryotes?
a)algae
b)bacteria
c)viruses
d)all of the above
B)Bacteria
Cause viruses are not prokaryotes
The steps below identify the part of the process to become a U.S. citizen, the naturalization process. Use the steps below to answer the following question. 1. Be a legal resident in the U.S. for at least 5 years. 2. Complete an application 3. ? 4. Take the Oath of Allegiance What is missing in the process above? A: Register for Selective Service System B: Interview and pass civics test C: Complete a background check D: Receive an appointment letter
Answer:
B. Interview and pass civics test
Explanation:
I know people who have gone through the process. Hope this helps :)
what is the answer?
Answer:
D: Truck
Explanation:
The truck has the largest mass combined with the speed = the greatest kinetic energy value
which of the following is a organic molecule
Answer: you didn't state the answers to choose from so i"ll just list common organic molicules: nucleic acids, proteins, carbohydrates and lipids.
Explanation:
There is a question that says why the g cell is unaffected by the presence of the tetanus toxin
Answer:
Cellubrevin, like the synaptic vesicle proteins synaptobrevins I and II, can be cleaved by tetanus toxin, a metallo-endoprotease which blocks neurotransmitter release. However, nonneuronal cells are unaffected by the toxin due to lack of cell surface receptors for its heavy chain.
branches of science?
Answer:
Natural science can be divided into two main branches: life science and physical science. Life science is alternatively known as biology, and physical science is subdivided into branches: physics, chemistry, astronomy and Earth science.
20 points
Every water molecule is made up of two hydorgen
atoms and one
oxygen
atom. This arrangement causes a water molecule to have a slightly negative
charge near it's oxygen atom and a slight-
positive
charge near each hydrogen atom. This uneven distribution of charges across a molecule is called______?
Fill in the blank
Answer:
type of forms between molecules is called a hydrogen bond.
Answer:
hydrogen bond
Explanation:
hydrogen bond
Give an example that illustrates lipids being waterproof.
Answer:
Oils do not dissolve in water
Explanation:
Waxes are one of the forms of lipids, which are waterproof.
• Lipids are insoluble in water and are hydrophobic. They perform many essential activities within the cell.
• One of the forms of lipids is waxes, which envelopes the leaf surfaces of some plants, and the feathers of some aquatic birds.
• Due to the hydrophobic nature of waxes, they inhibit water from attaching to the surface. Thus, waxes are waterproof.
• The waxes are the long-chain fatty acid chains attached covalently with the long-chain alcohols.
Thus, waxes are the lipids that demonstrate the waterproof property of the lipids.
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list 3 examples of eukaryotes
Answer:
plants, animals, fungi.
Explanation:
eukaryotes have organized nucleus and organelle bounded by membrane
in an experiment, the group that is expossed to the variable to be tested is called what
Answer:
An experimental group
Explanation:
An experimental group is a test sample or the group that receives an experimental procedure. This group is exposed to changes in the independent variable being tested.