Answer:
A
Explanation:
1. Give an example of an element that has isotopes and list its natural isotopes (excluding chlorine, hydrogen and carbon)
Answer:
One example of an element with isotopes is sulfur. Its natural isotopes include sulfur-32 (0.94%), sulfur-33 (0.02%), sulfur-34 (4.21%), sulfur-35 (0.75%), and sulfur-36 (0.18%).
Answer:
One example of an element with isotopes is strontium, which has seven natural isotopes: 88Sr, 86Sr, 87Sr, 84Sr, 82Sr, 83Sr, and 81Sr. All of these isotopes are stable, except for 81Sr, which is a radioactive isotope with a half-life of 9.2 minutes.
Which of these steps occurs first in an enzyme-catalyzed reaction
The step that occurs first in an enzyme-catalyzed reaction is that the enzyme forms a complex with the substrate. That is option D.
What is an enzyme?An enzyme is defined as the protein that is used to speed up biological reactions of the body which doesn't take part in the formation of products.
Before an enzyme acts, it will first bind to the receptor site at its substrate to form a lock and key structure.
Therefore, the first step of enzyme-catalyzed reaction is that the enzyme forms a complex with the substrate.
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Modeling a Food Web
In this activity, you will build a model of a food web in a specific aquatic ecosystem. You will then use the model to explain
what can happen to the competition in the ecosystem if environmental factors change because of natural factors and human
interference.
In contrast to a food chain, a food web shows how ecosystems function more graphically by showing how different animals are related to one another. To create a food web, list the primary producers, herbivores, omnivores, and carnivores for the given habitat.
What impact does human activity have on the ecosystem?Numerous human activities such as overpopulation, pollution, the burning of fossil fuels, and deforestation hurt an adverse effect on the physical environment. Climate change, soil erosion, poor air quality, and undrinkable water have all been brought on by changes like these.
What would happen if humans changed the way natural ecosystems functioned?Aridity and erosion may come from the ecosystem being altered by the loss of trees and biodiversity. Additionally, it causes extinction and climate change, and on a large enough scale, it might result in desertification.
What consequences do environmental changes brought about by nature have?Natural change processes include weather-related changes, plant and animal succession, and changes in reaction to geo-logic shifts. Geologic change describes how the terrain may be modified as a result of volcanism, uplift, or erosion. Succession is the gradual alterations of plants and animals in an ecosystem.
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How were humans born according to evolution?
Answer:
Explanation:
According to the theory of evolution, humans evolved from a common ancestor with other primates such as chimpanzees and gorillas. Over millions of years, a series of gradual genetic changes occurred, leading to the development of characteristics that are specific to humans, such as bipedalism, larger brains, and the development of language and culture.
The process of human evolution is thought to have begun around 7 million years ago, with the split of the human and chimpanzee lineages. The earliest known human ancestors were small-brained, ape-like creatures such as Sahelanthropus, Orrorin and Ardipithecus. As time passed, the human lineage evolved into larger-brained hominins like Australopithecus and eventually to the genus Homo, which includes modern humans, Homo sapiens.
It's worth noting that the evolutionary process is not a linear path, but a complex one with different lineages and divergences, but the most widely accepted scientific explanation is that human beings are the result of a long process of evolution from a common primate ancestor.
Answer:
A long process of which homo-sapiens slowly evolved into humans.
Explanation:
Hope it helps! =D
fresheater biome major attraction
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an adolescent asks the nurse about peak bone mass. the most appropriate response would be:
an adolescent asks the nurse about peak bone mass. the most appropriate response would be: Peak bone mass is the highest amount of bone density and mass that a person will have in their lifetime.
Peak bone mass is the highest amount of bone mass that a person has in their lifetime. It is usually reached around the age of 30 and is an important determinant of a person's risk of osteoporosis later in life. Factors that can affect peak bone mass include genetics, diet, and physical activity levels. Maintaining a healthy diet and regular physical activity can help ensure that a person reaches their peak bone mass and reduces their risk of osteoporosis later in life.
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An unknown specimen was grown on Mannitol Salt agar (MSA). Observe the pictured result and answer the following question.
Select ALL appropriate statements regarding the pictured Mannitol Salt agar (MSA) test result.
O The organism tested is most likely Escherichia coli (E. coli).
O The organism tested is able to grow in the presence of high salt.
O The organism tested does not ferment mannitol.
O The organism tested is possibly a type of Staphylococci.
O The organism tested ferments mannitol.
The organism tested is able to grow in the presence of high salt. It is tested ferments mannitol. It is tested is possibly a type of Staphylococci.
What type of bacteria grow on mannitol salt agar?
To find out if a bacteria is halophilic (loves salt) and capable of fermenting mannitol, a test called Mannitol Salt Agar (MSA) is utilised. Due to its capacity to flourish in an environment with a lot of salt, the bacteria is a halophilic one if it can proliferate.The selective and diverse medium Mannitol Salt Agar (MSA) is used. Because the Staphylococcus genus can withstand high saline levels, the high concentration of salt (7.5%) favours its inhabitants. Other genera of organisms may also proliferate, but usually in a very sluggish manner.So, mannitol salt agar is selective in that it prevents the development of bacteria that cannot withstand 7.5% NaCl and is different in how it uses mannitol by those that can grow.To learn more about MSA refer to:
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HELP ME THIS IS DUE SOON!!!
List the different phenotypes in the F₂ generation. What
the frequency of each phenotype? One is filled out for you
In Mendel's experiments 0% of the F1 generation displayed the recessive phenotype, and 25% of the F2 generation displayed the recessive phenotype.
Who is Mendel?Gregor Mendel is known as the father of the genetics due to his immense contributions in the field of inheritance. Gregor Mendel has worked with the pea plants where he studied several traits in the plant. Mendel used to cross two parents that are true breeding for a particular trait.
The first filial generation (F1) were all dominant i.e. 0% recessive while the second filial generation (F2) were 3 dominant and 1 recessive i.e. 25% recessive.
Therefore, In Mendel's experiments 0% of the F1 generation displayed the recessive phenotype, and 25% of the F2 generation displayed the recessive phenotype.
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a typical efficiency of the human body is about _____.
A. 5%
B. 10%
C. 25%
D. 50%
E. 80%
Answer:
The answer is C , which is 25 percent.
A line is a collection of __________.
segments
other lines
intersecting planes
points
Answer:
A line is a collection of points.
Explanation:
In geometry, a line is a fundamental concept that represents a straight path that extends infinitely in both directions. It is a one-dimensional object that has no thickness or width.
A line is composed of an infinite number of points. These points are considered to be the building blocks of a line. Each point on the line represents a specific location along its path. When these points are connected, they form the line.
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________________________________________________________
Please help !!! Do you think the ability to self heal, temperature regulation, and enhanced night vision would spears quickly due to natural selection, or would it spread quickly?
The ability to self heal, temperature regulation, and enhanced night vision would would it spread quickly because these characteristic may increase the fitness of a species in a short period of time.
What is the relationship between adaptation and evolution?Adaptation and evolution are closely related because adaptation is a process of genetic change within a species over time in order to better suit its environment. This genetic change is then passed on to the next generation and over time can accumulate to form new species.
Therefore, with this data, we can see that adaptations that enhance the fitness of a species would tend to spread quickly in evolution.
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Identify the amino acid carried by tRNAs with the following anticodon sequences. a. 5' -UAG-3' b. 5' -AAA-3'
c. 5' -CUC-3' d. 5' -AUG-3' e. 5' -GAU-3'
a.) 5' -UAG-3'- Leucine b)5' -AAA-3' - Phenylalanine c.)5' -CUG-3'- Glutamine d.)5' -AUG-3'- Histidine e.) 5'-GAU-3'-Isoleucine
What is the role of amino acid?Amino acids are required for the synthesis of body protein and other important nitrogen-containing compounds, such as creatine, peptide hormones, and some neurotransmitters. Although allowances are expressed as protein, a the biological requirement is for amino acids.
What are some health benefits of taking amino acids?Some health benefits of taking amino acids are-Providing the body with energy, Enhancing the musculoskeletal system, Regulating digestion, Enforcing healthy sleep/wake cycles and Supporting the immune system.
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Leucine, phenylalanine, glutamine, histidine, and isoleucine are the first five amino acids listed in order of importance.
What function does an amino acid have?The creation of body protein and other vital nitrogen-containing substances including creatine, peptide hormones, and certain neurotransmitters depends on amino acids. The biological need is for amino acids, even though allowances are portrayed as protein.
What are some of the health advantages of consuming amino acids?The body receives energy from amino acids, which also improve the musculoskeletal system, regulate digestion, enforce proper sleep/wake cycles, and support the immune system. Proteins are made up of amino acid molecules. The components of life are proteins and amino acids.
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Transcribe and translate the following DNA sequence (nontemplate strand): 5’-ATGGCCGGTTATTAAGCA-3’ a. The mRNA would be 5’- AUGGCCGGUUAUUAAGCA-3’ and the protein will be MAGY. b. The mRNA would be 3’- AUGGCCGGUUAUUAAGCA-5’ and the protein will be MAGY. c. The mRNA would be 5’- ATGGCCGGTTATTAAGCA-3’ and the protein will be MAGY. d. The mRNA would be 5’- AUGGCCGGUUAUUAAGCA-3’ and the protein will be MACY.
The correct answer is that the mRNA strand would be 5’- AUGGCCGGUUAUUAAGCA-3’ and the protein it codes for would be MAGY.
a. The mRNA would be 5’- AUGGCCGGUUAUUAAGCA-3’ and the protein will be MAGY. This is correct.
The mRNA is created through the process of transcription, in which the DNA sequence is used as a template to create a complementary RNA sequence.
In this process, the nucleotide thymine (T) in the DNA is replaced by uracil (U) in the RNA. Also, the protein is created through the process of translation, in which the mRNA sequence is read by the ribosome, which translates the sequence of nucleotides into a sequence of amino acids.
In this case, the mRNA sequence codes for the amino acid sequence MAGY.
b. The mRNA would be 3’- AUGGCCGGUUAUUAAGCA-5’ and the protein will be MAGY. This is incorrect.
The mRNA is always synthesized in the 5' to 3' direction, so the correct mRNA strand would be 5'-AUGGCCGGUUAUUAAGCA-3'.
c. The mRNA would be 5’- ATGGCCGGTTATTAAGCA-3’ and the protein will be MAGY. This is incorrect.
The mRNA is created through the process of transcription, in which the DNA sequence is used as a template to create a complementary RNA sequence. In this process, the nucleotide thymine (T) in the DNA is replaced by uracil (U) in the RNA.
Also, the protein is created through the process of translation, in which the mRNA sequence is read by the ribosome, which translates the sequence of nucleotides into a sequence of amino acids.
In this case, the mRNA sequence would be 5'-AUGGCCGGUUAUUAAGCA-3' and would code for the amino acid sequence MAGY
d. The mRNA would be 5’- AUGGCCGGUUAUUAAGCA-3’ and the protein will be MACY. This is incorrect.
The mRNA is correct, but the protein would not be MACY. The mRNA sequence codes for the amino acid sequence MAGY, not MACY.
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Bruno’s little spaniel managed to get into some nuts that he left out after watching a ballgame. Knowing that nuts are toxic to dogs, Bruno takes him in to see the vet. Checking the spaniel over, the vet tells Bruno that it looks as if the dog’s body is processing the toxin and should pass it naturally. His only fear is that as the toxin is excreted it may cause damage. The vet warns Bruno that they will have to keep a close watch on his dog for trouble in the future. What kind of trouble is the vet MOST likely worried about?
The vet warns Bruno that they will have to keep a close watch on his dog after taking nuts for trouble in the future therefore the kind of trouble the vet is most likely worried about is pancreatitis.
Who is a Vet?This is referred to as a medical professional who protects the health and well-being of both animals and people. They also specialize in the diagnosis and control of animal diseases through various types of treatment methods.
Nuts have a high fat content and it is dangerous in dogs because it causes a medical condition known as pancreatitis which is known as the inflammation of the pancreas.
This could lead to obesity of the dog in the long run and could predispose it to various forms of complications which is why the vet is most likely worried about it.
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Remains of ancient organisms, modified underground for long periods by temperature and pressure: ...
fossilized remains of ancient organisms that have been heated and pressed for a very long time underground: coal, oil, and natural gas.
What type of fossil fuel is naturally most prevalent?Fossil fuels are made from organic material that has broken down due to the extreme heat and pressure of the earth's crust. Coal was identified as the most prevalent fossil fuel in a 2013 report by the International Energy Agency.
Exactly what fossil fuel has the maximum energy density?Hydrogen, which is also the world's most basic chemical element, has the highest energy density of any fuel. In comparison to wood or coal, gasoline, which is made by refining crude oil, has double the amount of energy (three times).
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Why is air drier at the 30° N and 30° S and 90° N and 90° S latitudes, while it is wetter at the 60° N and 60° S
and 0° latitudes?
Here the picture to understand more please help!
Answer:Figure 8.3. 5: Major global climatic regions in relation to atmospheric convection cells.
Explanation:Rising air and low pressure creates rain and wet environments at 0 degrees and 60 degrees latitudes, while high pressure, sinking air creates drier conditions at 30 degrees and 90 degrees latitudes.
also here to comment to hope this helped
Acupuncture is an alternative medicine that uses wire-thin needles inserted by a trained practitioner into specific points in the body. This ancient form of pain relief and stimulation is said to benefit patients by blocking channels which practitioners claim allow pain to travel within the body. This practice became more widely recognized and used after a New York Times reporter wrote in 1971 of a positive experience with it after surgery.
Those who doubt the effectiveness of this treatment for pain attribute the pain relief to a placebo effect: if a patient believes something will reduce their pain, they will experience some relief. The National Institutes of Health says that acupuncture relieves pain and reduces nausea and vomiting, although it is unclear how it works. The few adverse effects reported are due to improperly sterilized needles or improper delivery, making this still a fairly low risk option. For anyone considering acupuncture, they should first research its effectiveness for their specific condition.
Summary of statements published by the National Institutes of Health
Which statement best explains the scientific claim about how acupuncture treatment reduces pain?
Acupuncture is an alternative medicine that uses wire-thin needles inserted by a trained practitioner into specific points in the body.
Those who doubt the effectiveness of this treatment for pain attribute the pain relief to a placebo effect: if a patient believes something will reduce their pain, they will experience some relief.
This ancient form of pain relief and stimulation is said to benefit patients by blocking channels which practitioners claim allow pain to travel within the body.
For anyone considering acupuncture treatment, they should first research its effectiveness for their specific condition.
The statement that best explains the scientific claim about how acupuncture treatment reduces pain is that acupuncture is an alternative medicine that uses wire-thin needles inserted by a trained practitioner into specific points in the body. So the correct option is A.
What is acupuncture?Acupuncture is an ancient Chinese practice which involves stimulating certain parts of the body by inserting very fine needles. This technique is usually used to treat pain and ailments that the person has or also to relieve stress.
According to the experts in this technique, what happens is that it helps to balance the qui that flows through the meridian channels that when introducing the needles will rebalance this energy.
Therefore, we can confirm that the correct option is A. Acupuncture is an alternative medicine that uses wire-thin needles inserted by a trained practitioner into specific points in the body.
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impact of dairy calf on dairy development .
The impact of the dairy calf on dairy development can be significant. A strong and healthy calf can provide many benefits such as Improved genetics, Reduced herd replacement cost, increased milk production and better herd health.
The term "dairy development" means what?By providing back-ended capital allowances for bankable projects, dairy development encompasses a wide range of operations such as improving milk production, preservation, procurement, transportation, processing, and marketing.
What role does the dairy sector play in India?The importance of the dairy industry in India is that it contributes to economic growth. Millions of rural households are employed and the country's economy is supported by the dairy industry. Farmers who are impoverished and without land can also make a good living from it.
Numerous advantages can be gained from a strong and healthy calf, including improved genetics, lower herd replacement costs, enhanced milk output, and better herd health.
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How did the water get from the sink to the window?
Answer:
salanchaks
Explanation:
salnachaks
Diffusion of substance across the cell membrane is influenced by all of the following except: A. Is ability to dissolve in water, B. The charge on the ion molecule_ C The charge of the memebrane_ D. The size of the membrane channel, E: Its 'solubility in the lipid membrane
All of the factors below, with the exception of one, affect how a drug diffuses over the cell membrane: it has the capacity to dissolve in water.
What is capable of diffusing across a cell membrane?As a result, tiny polar but uncharged molecules like H2O and ethanol as well as gases like O2 and CO2 and hydrophobic compounds like benzene can permeate through the plasma membrane.
What elements could prevent a molecule from crossing a cell membrane?The concentration, charge, and size of a molecule all affect its capacity to penetrate a membrane. Molecules often move from high concentration locations to low concentration areas through membranes. Unless the cell maintains an electrical potential, cell membranes prevent charged molecules from entering the cell.
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What is a disease that is spread by mosquitoes
Answer:
Their are many disease's that include:
Zika virus, dengue, and malaria. (their are many more)
Explanation:
What is a disease?
Answer - A disease is a type of disorder in human's and animal's that have a group of symptom's of bad change's.
Answer: Diseases that are spread to people by mosquitoes include Zika virus, West Nile virus, Chikungunya virus, dengue, and malaria.
sorry it sounds like i copied.
Explanation: they can also carry blood diseases and infections
Some animals have only blank cell
Some animals only have a single cell.
What are cells?Cells are described as the basic unit of life, all living organisms are made up of cells. Living component that is made up of macromolecule. The cell also contains cell organelles that perform the function of cells.
We have two types of cells and they include
prokaryotic cells and eukaryotic cells.Living organisms are also classified in two types,
unicellular and multicellular.Unicellular organisms are made up of only a single cell and they include organisms such as bacteria, protest, and yeast.
Multicellular organisms are those which are made up of more than one cell. These animals are these organisms are animals, plants, etc.
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how many genotypes result from a cross between the two parents in the interactive?
The likelihood of a homozygous dominant (TT) child born from a union of two Tt-genotype parents is 25%.
A genotype is a collection of genes in the human DNA that are in charge of specific features. It stands for the totality of your identity, which you will receive from your parents and ancestors.
The genotype of two parents who crossed each other is Tt.
One of their children has the homozygous dominant genotype TT.
This indicates that allele T is dominant and allele T is recessive.
Check out the punnet square of the "Tt" genotype cross between the two parents.
T t
T TT Tt
t Tt tt
Only one of the four offspring, homozygous dominant "TT," is generated.
Therefore, the likelihood that a cross between two parents with the genotype Tt will produce a homozygous dominant (TT) child is
=(1/4)*100
=25%
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If molecules in the sky scattered yellow light instead of blue light; sunsets would be colored a. orange b. yellow c. blue d. green e. none of the above
Sunsets would be colored blue if air molecules scattered yellow light rather than blue light.
Why does the sky change color as dusk falls?Light must pass through more of the atmosphere when the Sun is near the horizon during sunrise or sunset than it does when the Sun is overhead. More light is scattered as a result, including light with longer wavelengths like yellow, orange, and red, which gives sunrise and sunset skies their vibrant colors.
What occurs to blue light at dusk?The top rim of the Sun becomes blue due to the greater refractive index of blue light compared to red light. It is the blue sliver of sunlight that occasionally appears just beyond the horizon during the very last second of sunset.
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Use the following chemical reaction figure to answer the question below. What is the atomic number of the cation formed in the reaction illustrated above? Select one: a. 11 b. 10 c. 8 d. 1 e. 16
By using the chemical reaction, we can conclude that the atomic number if the cation formed is a) 11.
A positive-charged ion is known as a cation because it contains more protons than electrons (negatively-charged particles). When an atom loses one or more electrons, it creates cations because the overall charge becomes positive due to the loss of the negatively charged electron or electrons.
Because they move toward the negative electrode (cathode) in an electrical field and are positively charged, these ions are referred to as "cations." Except for hydrogen, all the elements that can produce cations are metals, whereas nonmetals can only produce anions. In fact, the tendency for metals to create cations and the tendency for nonmetals to generate anions is one of the chemical characteristics of both.
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A rock cycle model is shown.
(In image)
What type of rock is formed from cooling and hardening process?
A. Sedimentary rock
B. Igneous rock
C. Metamorphic rock
D. Magma rock
Answer:
b) Igneous rock
Explanation:
Igneous rock is formed from cooling and hardening process. As given in the diagram the magma undergoes cooling and hardening process to become an Igneous rock. Hence, the option (b) is correct.
Answer:
What type of rock is formed from cooling and hardening process?
A. Sedimentary rock
B. Igneous RockC. Metamorphic rock
D. Magma rock
Writing at least three sentences, make a comparison between what happens with the
red dye in the water bin with what happens to a hot air balloon surrounded by cool air.
A comparison between what happens with the red dye in the water bin with what happens to a hot air balloon surrounded by cool air is given below.
1. The red dye in the water bin mixes and diffuses evenly throughout, much like the hot air balloon surrounded by cool air, which causes the air inside the balloon to cool and become more uniformly distributed.
2. The red dye in the water bin disperses evenly and gradually, just like the hot air balloon which gradually loses the heat and descends as the air around it becomes cooler.
3. The red dye in the water bin spreads out, taking on the shape of its container, similar to the hot air balloon which expands or contracts to match the surrounding air pressure.
What is a Dye?
A dye is a colored substance that is used to color fabrics, paper, and other materials. Dyes are usually applied in an aqueous solution and may require a mordant to improve the fastness of the dye on the material.
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genetically modifying human ______ cells may directly affect future generations.
Gametic cells have the potential to have a direct impact on future generations that are exposed to human genetic modification.
Gametic incompatibility: What is it?One of the methods of reproductive isolation is gametic incompatibility. It is based on molecular interactions between different species that stop heterospecific fertilization. Gametic incompatibility has only been researched in a few model species, despite the fact that it can happen to any sexually reproducing creature.
Is incompatibility between gametes prezygotic or postzygotic?Prezygotic barriers prohibit animals from reproducing, or if mating does occur, the sperm cannot fertilize the egg. Contrast this with blastocyst walls, or barriers that form after fertilization. Gametic isolation is one type of prezygotic barrier.
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Of these steps, which one occurs earliest in the process of producing recombinant DNA?
A) Human DNA fragments are mixed with the cut plasmids.
B) The same restriction enzyme is used to isolate the gene of interest and to cut the plasmid DNA.
C) The recombinant plasmids are mixed with bacteria.
D) Bacteria carrying recombinant plasmids are cloned.
Of these steps, The same restriction enzyme is used to isolate the gene of interest and to cut the plasmid DNA is the earliest in the process of producing recombinant DNA.
Enzymes and a variety of laboratory procedures are used in recombinant DNA technology to modify and isolate specific DNA sequences.This method enables the joining (or splicing) of DNA from different species or the creation of genes with unique functions. The resulting copies are referred to as recombinant DNA.
When two genetic materials from distinct sources are combined, the term defines the DNA, proteins, cells, or creatures that result. Recombinant chemicals are created in a lab and are being researched for many different uses, including the treatment of cancer.
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How are viruses and pathogenic protozoa similar? Please include 5 sentences in your explanation. HELP THIS WILL HELP ME SO MUCH AND U WILL GET BEAINLYEST
Answer:
Viruses and pathogenic protozoa are similar in a few ways.
1- Both are microscopic organisms, meaning they are too small to be seen with the eye.
2- Both can cause disease in humans and other animals.
3- Both can spread from person to person or from animal to person.
4- Both can be treated with medication, although protozoa are generally more susceptible to treatment than viruses.