Oxygen, carbon, hydrogen, nitrogen, sulfur, and phosphorus are necessary chemicals in a living organism.
Which of the following is an example of a necessary chemical in a living organism?The chemical elements which are present in our atmosphere and plays a very important role for our living is oxygen, carbon, hydrogen, nitrogen, sulfur, and phosphorus. These are the chemical elements which makes the life possible on the surface of earth. These makes the 99% of the life on earth. The four most abundant elements which are found in our body are hydrogen, oxygen, carbon and nitrogen. These elements form all parts of our body because these elements attached with one another forming parts of our body.
So we can conclude that Oxygen, carbon, hydrogen, nitrogen, sulfur, and phosphorus are necessary chemicals in a living organism.
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What do the varying shapes and arrangement of epithelial tissue suggest?
The varying shapes and arrangement of epithelial tissue suggests different functions. For example, simple stratified are for outer coverings while simple columnar is for absorption.
There are many epithelial tissues in the human body. They make up the majority of the tissue in glands, line body cavities and hollow organs, and cover all of the body's surfaces. Protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception are just a few of the many tasks they carry out.
There are three types of epithelial cells in epithelial tissue: cuboidal, columnar, and squamous. The four main groups of simple epithelium are: 1) simple squamous; 2) simple cuboidal; 3) simple columnar; and 4) pseudostratified.
A spherical nucleus is located in the core of cuboidal epithelial cells, which have a cube-like structure. Tall, rectangular, and with an oval-shaped nucleus in the basal region, columnar epithelial cells exhibit these characteristics.
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How do bacteria become resistant to
antibiotics?
A. Bacteria can obtain DNA from antibiotics to make it
resistant.
B. Bacteria can heal from the damage of antibiotics.
C. Bacteria can become dormant and survive the
antibiotics.
D. Bacteria can reproduce quickly which allows them to
evolve adaptations to resistant antibiotics.
Answer:
the answers is d bacteria can reproduce quickly which allows them to evolve adaptations to resistant antibiotics
Identify the three types of variables in the following inquiry: Does increasing the amount of pesticide used for a crop decrease the harvest?
The three types of variables in the following inquiry: pesticide, crop and harvest
A variable is defined as something that can vary or as a quantity in an equation whose value can change. The weather is an example of a variable in your planning if you are organizing an outdoor event and you need to take the weather into account but are unsure of what it will be like.
Any feature, characteristic, or circumstance that can exist in various amounts or types is considered a variable. Independent, dependent, and controlled variables are typically present in an experiment.
Therefore, the three types of variables in the following inquiry: pesticide, crop and harvest.
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What is one question you have about the study of life? Remember that a good scientific question is concise, clear, and verifiable by experiment. HELP ASAP!!
A good question is; What were the molecules that originated life?
What is the study of life?The study of life is referred to as biology. It is derived from two Greek words; "bios" meaning "life" and "logs" meaning "study". Thus biology is the study of life and the properties of living things.
A very good question that could be asked is; What were the molecules that originated life? This could be traced back to simple molecules such as water, nitrogen, carbon dioxide etc.
A careful experiment could be designed where these molecules are subjected to conditions similar to those at the beginning of the universe in order to decipher how they joined together during the formation of the universe.
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Which choices represent a physical change that a person could make to a piece of paper? Select ALL that apply. A. cut B. burn C. fold D. wad up (Remember this is a pick more than one question)
Answer: A, C, D
Explanation: All of them change the physical appearance except for B because when you burn paper it is a chemical change that can not be undone. Only a physical change can be undone.
Why is publishing one's work in a professional journal or on a
professional website a good idea as far as science and engineering
are concerned?
Select one:
C It provides support when a researcher asks their superiors for a
raise in salary.
(It helps scientists and engineers communicate their ideas and
methods clearly so they can be critiqued and validated by others in
the field.
O It prevents plagiarism.
C It encourages other researchers to change their fields of study to
things less popular.
Publishing one's work in a professional journal or on a professional website is a good idea as far as science and engineering are concerned because it helps scientists and engineers communicate their ideas and methods clearly so they can be critiqued and validated by others in the field.
A professional journal is an academic publication that is published by a professional association and is intended for a specific professional readership, such as doctors, attorneys, teachers, engineers, or accountants. Reports, professional-relevant practical writing, and research papers may be among them.
An online identity, a personal website, and a "multi-dimensional résumé" can all be integrated to create a professional website. Because it is constructed using the fundamental components of a resume and includes interactive elements that are only accessible through a website interface, it can be regarded as a multi-dimensional resume.
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ANALYZE What types of information can be gained
from building a prototype that is not an exact model of
the final product?
Answer:
Many test can be run on the functionality of certain features of the design without using expensive materials. Prototyping can tell you if components on your design are not needed or could be brought to the client for approval and input before designs are finalized.
Prototypes are not final products, just like mockups and models are not. Some of their restrictions are similar. In other words, they are rarely well tested or bug-fixed.
What is the role of prototyping in product formation?Prototype quality may not meet criteria for finished products because the procedures used to develop them are not always the same as those used to create finished products.
A prototype for an industrial design can be created in a variety of methods, such as concurrently, aggressively, and fast.
Physical replica. Everything from kraft paper to building bricks can be used to create a prototype model. It merely provides a general notion of the design; it doesn't need to have any functional components.
Therefore,Throughout the process of developing a product, these various prototyping techniques result in a range of proof-of-concept models.
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What is NOT a purpose of carbohydrates?
Make up amino acids
Part of nucleotide structure
Source of energy
Involved in cell signaling
Answer:
Number 4 is the Answer " Soure Of Energy
The density of the element mercury is 13,6 g/mL. If a sample of mercury has a mass of 4.6 grams, what is its volume?
The volume of the element mercury is 0.338 cm³.
We have elemental mercury.
We have to calculate the volume of 4.6 g of elemental mercury.
What is the relation between Mass and Density ?The relation between mass and density are as follows -
M = D x V
D - density of element
M - mass of element
V - volume of element
According to the question -
M = D x V
Rewrite the relation as follows -
V = M / D
Substitute the values -
V = 4.6 / 13.6 = 0.338 cm³.
Hence, the volume of the element mercury is 0.338 cm³.
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The cytoplasm is the internal space where most
are found. It is made up of a jelly-like fluid called
and a network of protein
Fibers called That act as a frame
Answer:
1. Organelles
2. Cytoskeleton
Explanation:
r u in 7th grade Pre medical
what's the difference between the leaf cell and root cell in osmosis and physiological support
Answer: Cells in plant roots do not contain chloroplasts because they are not exposed to light. The chloroplasts contain green pigments called chlorophyll.
Explanation:
Spending time with a family dog decreases the amount of stress someone is feeling.
Independent Variable:
Dependent Variable
In the investigation about how the dog decreases the amount of stress, the dependent variable is the stress levels while the independent variable is the time expended with the dog.
What is the independent variable?The independent variable is a variable that isn't changed along the experimental procedure (in this case time), while the dependent variable is modified by the conditions.
In conclusion, in the investigation about how the dog decreases the amount of stress, the dependent variable is the stress levels while the independent variable is the time expended with the dog.
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if you are located at a position of latitude 42 north (you are), polaris
If we are located at a position of latitude 42 north Polaris will be Equal to the latitude of the observer
we are located at 42° of latitude, the North Star is on the horizon, making an angle of 42°. For any point between the Equator and the North Pole, latitude is obtained simply by measuring the altitude of Polaris.
Polaris is vertically above at the North Pole. we can say that it make an angle of 90º above the horizon at that spot which is the same as the latitude of the North Pole.
So now we can conclude that it will make equal angle as the latitude of the north pole.
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what is the role of membrane proteins
Answer:
Mediate processes that are fundamental for the flourishing of biological cells.
Explanation:
Membrane-embedded transporters move ions and larger solutes across membranes, receptors mediate communication between the cell and its environment and membrane-embedded enzymes catalyze chemical reactions
The nuclear envelope of a cell connects most directly to which organelle?
The nuclear envelope of a cell connects most directly to the endoplasmic reticulum organelle
The endoplasmic reticulum which can either be smooth or nor be rough, and in general its function is to produce the proteins for the rest of the cell to be function. The rough endoplasmic reticulum that has on it ribosomes, which are the small, round organelles whose function it is to make those proteins The endoplasmic reticulum (ER) is also a network of the membrane-enclosed tubules and the sacs (cisternae) that extends from the the nuclear membrane throughout the cytoplasm . The entire endoplasmic reticulum was enclosed by a continuous membrane and is the largest organelle of the most eukaryotic cells.
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What is not descriptive of mixotrophs?
It is an organism that is able to photosynthesize.
It is an organism that can absorb food from the environment.
There is one type of mixotroph.
Euglena is an example.
Answer:
There is one type of mixotroph.
Explanation:
Explanation: Mixotrophs are the organism that can use a mix of diff
Mixotroph are organism that can use a mix of diff.
What are Mixotroph?Mixotroph is an important type of nutrition seen in many flagellates. Mixotrophy is a common phenomenon among free living protozoans. Mixotrophy is obligate. Mixotrophy is facultative. Mixotrophy is seen in planktonic protists.
Factors affecting mixotrophy:
Resource availability LightTemperatureMixotrophy has important role for primary and secondary production and transfer of carbon to upper levels in Arctic planktonic food webs. A mixotrophic organism is an organism that can use a mix of different sources of energy and carbon. Euglena is an example which uses mixotrophic nutrition.
Therefore, Mixotroph are organism that can use a mix of diff.
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parts of a germinating plant
Answer:
Hope this helps.
_____________
➲ Crediting
Image originally appeared at: Toppr
Electrons in which energy level have the MOST potential energy?
Answer:
So a large amount of energy is required to liberate an electron from an inner most shell rather than an electron from the outermost shell. This is why we say that the electron in the outermost shell has a higher (potential) energy than the inner most shells
Answer: outer most shell
Explanation:
the outer most shell because it is the farthest away from the center
Which statement is true?
Animals only perform cellular respiration, and plants only perform photosynthesis. Animals only perform cellular respiration, and plants only perform photosynthesis. Plants and animals perform cellular respiration and photosynthesis. Plants and animals perform cellular respiration and photosynthesis. Plants perform cellular respiration and photosynthesis, but animals only perform cellular respiration. Plants perform cellular respiration and photosynthesis, but animals only perform cellular respiration. Animals perform cellular respiration and photosynthesis, but plants only perform photosynthesis.
Animals only engage in cellular respiration, whereas plants also engage in photosynthesis. hence choice A is the right one.
Plants manufacture their food through the process of photosynthesis, which uses inorganic elements like carbon dioxide and water. Light energy is used in this process, where it is changed into chemical energy.
The photosynthesis reaction is shown below.
In the process of cellular respiration, the glucose generated by plants is broken down to provide energy in the form of ATP. 6CO2 + 6H2O C6H12O6 + 6O2 The energy standard used by all cells, including those in plants, is ATP. Plants must therefore also transform their food into ATP in the form of ATP.
The response of plant cellular respiration is seen below.
O2 + C6H12O6 = CO2 + H2O + ATP.
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definition of the word biochemistry
Answer:
Noun
The branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms.
Explanation:
A man's ability to handle stress may affect production of
testosterone; blood pressure
O insulin; weight
O red blood cells; erections
healthy sperm; fertility
O estrogen; sexual desire
and reduce his
13. List three organizations or agencies in your area that are involved in the conservation and protection of the environment. Describe the purpose of each agency/organization.
Answer:
Union of Concerned Scientists: Works for a healthier environment and a safer world. Through this renewal award, UCS conducts technical assessments on securing weapons material in the US.
Natural Resources Defense Council: Strives to rid our food, air, water, and household products from toxic chemicals. NRDC works to protect our world's oceans from pollution and exploitation.
Environmental Working Group: Protect human health and the environment and specializes in research and advocacy in the areas of agricultural subsidies, toxic chemicals, drinking water pollutants and corporate accountable.
Explanation:
Correctly identify the following labels on the plant and animal cells
Even when animals and plant cells share many structures, they also have several differences. Chloroplasts, a big vacuole, cell walls (plant cells), centrioles, and several small vacuoles (animal cells).
Note: Since I did not find the complete question, here I provide an explanation of the main differences between plant and animal cells, and I attach an image with different labels for you to know which these structures are.
What are the differences between plant and animal cells?Plant and animal cells share many characteristics but differeciate in some others.
SIMILARITIES:
Both of them,
are Eukaryotic cellshave a cell membrane that provides protection to the cell content and allows the selective transport of substances in and out of the cell. carry their genetic material in the nucleus and mitochondria. have organelles, which accomplish different functions and are located in the cytosol.have microtubules in their cytosol involved in substances transport and cell structure. have pigments that provide color to the tissue and accomplish different functions on the cell.DIFFERENCES
Plant Cells,
Have a cell wall, which is a rigid structure that protects the cell and provides support. Since it is rigid, cells' shape is usually prismatic and regular. Cell walls are composed mainly of cellulose. Have chloroplasts. These organelles accumulate chrorophyll and are in charge of photosynthesis. They use solar energy to produce organic matter and release oxygen. They also carry their genetic material. Have a unique big-sized vacuole that might occupy almost 90% of the cell. Their principal function is to store water and keep the turgidity. When the vacuole gets empty, the plant loses rigidity. Have plasmodium, chromoplasts, and glyoxysomes.Animal Cells,
They have centrioles, which are paired tubular organules composed of microtubules, closely involved in cell division. These are located in the centrosome near the nuclear membrane.
Animal cells have many small vacuoles that store water, ions, and waste substances.
In the attached image you will find all these labeled structures.
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Which statement gives an advantage of multicellular organisms?
A. All of the cells are the same.
B. One cell performs all of the necessary functions.
C. They can grow large.
D. They can reproduce quickly.
Identify some characteristics a species may possess that would fuel its ability to cause ecological damage, as the brown tree snake has in Guam. Provide some reasoning for why you chose these characteristics.
Lionfish is an invasive species that prey on herbivorous fishes decreasing their population, causing an increase in algae population, and consequently affecting coral health. They also compete and affect native piscivorous.
What are the problems associated to invasive species?
The introduction of invasive species has ecological, economic, and socio-cultural consequences.
Once an invasive species has been established, it overgrows.
In the new areas, these species have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, and better nitches-.
These factors favor their establishment because they are adapted to surviving under harder conditions.
They interact with native species by competing for resources such -as water, place, radiation, exposure, shelter, food, etcetera-.
They can also become significant predators of native species, consuming a wide diversity of prey items, and in many cases, there are no native species that may prey on them. They have no predators.
They provoke significant damage to the structure of native ecosystems, causing severe damage to endemic species. They produce ecological imbalances in the trophic chains and the dynamics of communities.
As they expand, they can also affect human in an economic manner and has socio-cultural effects. Many invasive species might cause crop loss by eating cultures. They attack farm animals. They affect buildings and other structures or ships by eating wood. They might even attack humans and cause health problems.
This is the case of the brown tree snake, which has provocked the extinction of many bird species in Guam.
Another examples is the Lionfish in Atlantic ecosystems.
This tropical invasive species has successfully been established in the Atlantic Ocean, where it is seriously affecting the marine ecosystem.
This species inhabits waters from the coast to 50 meters deep, mostly in reefs and rocks that provide protection. They have a few predators and consume a high diversity of prey items, causing an imbalance in marine trophic webs.
Lionfish is a piscivore species that has caused a sharp decrease in the density of young and herbivorous fishes.
It competes with other native piscivores affecting their population growth rate.
Since they prey on fishes that feed on algae, the reduction in their populations has caused an increase in algae population size.
Algae overgrowth produces severe damage to the coral reefs, enhancing their mortality.
The main consequences of lionfish introduction into the Atlantic ecosystems are the followings,
marine biodiversity loss, water quality decrease, ecosystem recovery difficulty, and impacts on food provisioning for many other ocean species.You can learn more about invasive species at
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Give important characteristics of algae
Answer:
algae is a eukaryotic cell
Explanation:
ِAlgae are eukaryotic organisms that have no roots, stems, or leaves but they have chlorophyll and other pigments for carrying out photosynthesis. Algae can be multicellular or unicellular.
Unicellular algae occur most frequently in water, especially in plankton.
algae may occur in moist soil or on the surface of moist rocks and wood.
How many orbitals are in the second energy level?
Answer:
2nd level has 4 orbitals. An f sublevel has 7 orbitals.
Answer:
4 orbitals
The second energy level will thus have a total of 4 orbitals. These orbitals will be distributed on two subshells, the s-subshell and the p-subshell. How many electrons can the second energy level hold? 8 electrons There are 2 electrons on the first energy level, 8 electrons on the second level, and 1 electron on the third energy level.
Explanation:
Which is an example of how Human activity can cause long-term changes to environments that affect organisms?
Overpopulation, pollution, the burning of fossil fuels, and deforestation are just a few of the ways that humans have an influence on the physical environment. These kinds of modifications have led to climatic changes, soil erosion, poor air quality, and groundwater pollution.
This is further explained below.
What is the environment?Generally, All living and non-living objects that occur naturally, or in this example, without the use of artificial means, are included in the natural environment or natural world.
Typically, the Earth or certain portions of the Earth are referenced by the phrase.
In conclusion, Humans have an impact on the physical environment in a number of ways, including overpopulation, pollution, the burning of fossil fuels, and deforestation.
Climate change, land erosion, poor air quality, and groundwater contamination are all results of these alterations.
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why packing food in salt makes the food last longer without refrigeration?
Answer:
Salt reduces the water in the food and inhibits bacterial growth. In this way, the salt preserves the food from bacteria. A refrigerator is also used to keep the food fresh for an extended period. Colder temperatures in refrigeration help to slow down the growth of bacteria and microorganisms that would spoil the food.
Answer:
Salt reduces the amount of water in food and prevents bacterial growth. As a result, the salt protects the food from bacteria. A refrigerator is also used to keep food fresh for a long time. Colder temperatures in refrigeration aid in slowing the growth of bacteria and microorganisms that would otherwise spoil the food.PLS HELP ME
What is a major difference between these two types of cells?
Image of a prokaryote and eukaryote
A-The location of the cytosol
B-The location of the DNA
C-The presence of a plasma membrane
D-The presence of ribosomes
its not C
Answer:c
Explanation: