Different types of cells are frequently stained with methylene blue. Positively charged and a basic dye, methylene blue. When a basic dye is used for staining, it adheres to the cell wall and is referred to as a positive stain since most cells (such as bacteria) have a negative charge in their cell walls.
Therefore, a fundamental dye contains a positive chromophore that enables it to permeate and be effectively absorbed by the cells or organisms being stained and visualized under a microscope.Negatively charged DNA reacts with methylene blue, attracting a basic dye with a positive charge that colors the nucleus of cells.To know more about basic dye visit:
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When conducting an experiment, it is generally necessary to include __________ groups that are treated exactly the same as treatment groups except for the condition being tested.
When conducting an experiment, it is generally necessary to include control groups that are treated exactly the same as treatment groups except for the condition being tested.
What are control groups?
In a scientific experiment, a control group is a subset of participants who are not included in the main experiment and whose outcomes are unaffected by the independent variable under study. Isolating the effects of the independent variable on the experiment can help rule out other possible explanations for the findings of the experiment.
Positive and negative control groups are the other two categories into which they might be divided.
The parameters of the experiment are set to ensure a good outcome in positive control groups. A successful control group can demonstrate that the experiment is running as intended.
Negative control groups are those where the experiment's settings are designed to produce a poor result.
Not all scientific studies call for the use of control groups.
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Membrance glycoproteins and glycolipids that enable cellls to recognize potentially dangerous foreign cells serve as?
Membrane glycoproteins and glycolipids that enable cells to recognize potentially dangerous foreign cells serve as cell identity markers.
Cell surface antigens and cell markers act as monograms to help distinguish and categorize cells. Most of these are chemicals or antigens found in the plasma membrane of cells. There are distinct sets of markers or antigens that are particular to various cell types. In essence, cell surface markers are like a fingerprint—they are unique to each type of cell and can be recognized based on the types of markers that are found on the membrane. Currently, CD antigen, often referred to as CD molecules and clusters of differentiation, is the most prevalent cell surface marker.Glycoproteins carry out essential structural and metabolic tasks. Cell-cell recognition is the ability for cells to identify if another cell is familiar or foreign.learn more about Glycoproteins here: https://brainly.com/question/9507947
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what did Jane Goodall see chimpanzees doing that had never been seen before?
Answer: Jane discovers that chimpanzees eat meat
Prior to this discovery, chimpanzees had been assumed to be vegetarian. During her research, Jane also observed the hunting process a group of chimpanzees attacked, killed, and ate a red colobus monkey that had climbed high into a tree.
Explanation:
Kendra wishes to build a model of a carbohydrate molecule ideally containing as many monomers as possible which set should she choose
Kendra wishes to build a model of a carbohydrate molecule ideally containing as many monomers as possible. She will choose set B.
What are monomers?
A monomer is a type of molecule that has to make chemical bond with any of the molecule and can form long chain and polymer has been sequence of chain that is unspecified or unknown number of the monomers.
Monomers are considered to be smaller in size and the molecules are organic in nature that can be combined with similar the molecule to form a very large size of the molecule, or the molecule has been known as polymer.
The main example of the monomers are glucose, amino acids, ethylene, and vinyl chloride. Each monomer has been combined to form polymers in other ways.
Therefore, Kendra wishes to build a model of a carbohydrate molecule ideally containing as many monomers as possible. She will choose set B.
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Which process would most likely result in the formation of a volcano?
A central crack forms where a thin section of the earth’s crust breaks, and molten rock seeps out.
A central crack forms where a thin section of the earth’s crust breaks, and molten rock seeps out.
The earth's crust is broken into pieces.
The earth's crust is broken into pieces.
A central crack forms where a thick section of the earth’s inner core breaks, and molten rock seeps out.
A central crack forms where a thick section of the earth’s inner core breaks, and molten rock seeps out.
Heat and pressure act on igneous or sedimentary rock.
Answer:
The Earth's crust is broken into pieces
Answer:
Number 1
Explanation:
Help asap pls 30 points bio
Which brain imaging techniques allow for the observation of structure but do not allow observation of brain activity?
With the use of cutting-edge noninvasive neuroimaging methods like EEG and fMRI, researchers may now watch brain activity while volunteers carry out different perceptual, motor, and/or cognitive tasks.
Which three methods enable the study of the active brain?There are several ways to go about gathering data about the anatomy and activities of the brain. Functional magnetic resonance imaging (fMRI), magnetoencephalography (MEG), and electroencephalography are the three most popular and often utilised measurements (EEG)
Why is fMRI employed?It can be used to investigate the functional architecture of the brain, identify the regions of the brain responsible for vital functions, assess the consequences of a stroke or other illness, or determine how best to treat the brain. Other imaging methods may be unable to find abnormalities in the brain that fMRI can.
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Which term best describes the fine tuning of an antibody mediated immune response, via genetic hypermutatoins?
Adaptive Immunity is the term that describes the fine-tuning of an antibody-mediated immune response, via genetic hypermutations.
Adaptive immunity involves lymphocytes- B cells and T cells which have receptors for any antigen they encounter. When exposed to an antigen, T cells release chemicals to activate B cells. B cells then divide and differentiate into memory cells and plasma cells. Plasma cells produce a large number of antibody molecules to fight against the specific antigens while memory cells reserve some of these antibodies to protect the body from future infections.
Genetic hypermutation changes the affinity of an antibody (B cell receptor) to detect the antigen. This occurs through a process called affinity maturation. It enables an antibody to produce a stronger and specific response to an antigen.
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3. Bacterial cells are unicellular and often reproduce using binary fission. The offspring are identical to
the parent as there is no combination of gametes. What type of reproduction would this be
considered?
Fusion
Budding
Sexual
Asexual
Organic farmers use the bacterium bacillus subtilis to prevent downy mildew in grapes and powdery mildew in greenhouse tomatoes. the farmers are therefore using this bacterium as a:________
Organic farmers use the bacterium bacillus subtilis to prevent downy mildew in grapes and powdery mildew in greenhouse tomatoes. the farmers are therefore using this bacterium as a Fungicide.
A tough kind of bacteria called Bacillus subtilis, sometimes referred to as "hay bacillus" and "grass bacillus," is found in soils and the gastrointestinal tracts of animals like cattle, goats, deer, and humans. It was one of the first bacterial species to undergo extensive study, and because of its capacity to withstand high and low temperatures, it is now frequently utilized in industrial, agricultural, and fermentation operations. Because Bacillus subtilis is highly competitive in the soil and frequently outperforms other soil microorganisms, it excels at preventing fungal diseases on foliage and in growing media.To know more about fungal diseases visit:
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Normal microbiota are typically found in and on all the following body locations except the.
Normal microbiota are typically found in and on all the following body locations except the blood.
Microbiota is made up of two words micro and biota where micro is small and biota is a range of organisms so microbiota means a wide range of microorganisms that are present in the body including bacteria and these can be symbiotic, commensal, parasitic, pathogenic, and in the same way the human body is also inhabited by millions of different kinds of microorganisms which live in body but does not give any harm to it and the most important ones are the bacteria which are found in the skin, nose, mouth and also the gut and the bacterias found in the gut are very important as they help in digestion and also they are innate to our body as they are found and present since birth to throughout the lives but these microbes are not present in the blood which is fluid and is made up of plasma, platelets, RBCs that is red blood cells and WBC that is white blood cells and bacterias or microbes because they need an optimum ph to survive and as blood ph is neutral with 7 so they don't grow there hen put in a culture dish and the function of microbes in the body includes to protect the intestine agaisnt the colonization by exogenous pathogens and harmful microorgansisms through modulated immune responss.
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PLs help!
50 points!
Jordan is doing a science fair project on the effects of music on the growth of tomatoes. He has two tomato plants, Plant A and Plant B, that he grows in a window and gives the same amount of water. Plant A is exposed to classical music using headphones attached to the soil. Throughout the growth period, Jordan counts the number of tomatoes produced by each plant.
Plant A = 35 Tomatoes | Plant B = 55 Tomatoes
6.
What is the dependent variable in this experiment? What is the independent variable?
Answer:
The control group is the type of tomato the plants are.
The independent variable is the type of music played.
The dependent variable is Plant A and B's growth.
His conclusion should be that music does not affect the growth of tomatoes.
He should make sure both plants were getting the same amount of water, soil, light, seed, and fertilizer so that can't affect the tomatoes in any way.
Explanation:
Hope this helps
Brainliest please
__________ accumulate in dna over succeeding generations and are the ultimate source of new genetic variation.
Mutations accumulate in dna over succeeding generations and are the ultimate source of new genetic variation.
Gene variants, sometimes known as mutations, can cause genetic differences, or a normal process in which genetic information is rearranged as a cell prepares to divide can also cause genetic variations (known as genetic recombination).Different phenotypes can be introduced into an organism by genetic changes that change gene activity or protein function.By changing genes and alleles in a population, mutations cause genetic variety. They could affect a single gene or a whole chromosome. Although mutations alter an organism's genotype (genetic make-up), the phenotype of an organism may not always be altered. For instance, dogs and humans have different-sized tails and different-colored eyes. This implies that no two individuals within a species are alike. Variation refers to the differences that exist between individuals within a species.learn more about mutations here: https://brainly.com/question/14438201
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what has “sprung up” all over phoenix and why is this a problem?
Drought has “sprung up” all over Phoenix.
How Drought has become a problem in Phoenix?About 40 million people in the southwest depend on the Colorado River for their water supply, but it is currently experiencing catastrophically dry conditions. It has been the driest two decades in 1,200 years. Phoenix is one of at least six Arizona cities that have officially declared water shortages. This desert area gets less than 8 inches of rain a year.As Phoenix and its neighbors continue their relentless development — Arizona's population has more than quadrupled in the past 50 years, from 1.8 million in 1970 to 7.2 million today — it has long been debatable how to supply enough water to sustain a city this size in the desert. The potential effects of drought on their daily life, are an increase in wildfires, a decrease in local food, and a decrease in leisure activities because of low lake water levels.How is Phoenix coping up with dry conditions?Phoenix has activated its drought management plan and is asking residents to use less water. The City of Phoenix issued a stage 1 water alert this year. With the alert, individuals are being advised to use less water in ways that won't significantly affect their daily life. One of the simplest and most efficient methods to preserve water, according to the city, is to water landscapes appropriately. The city concentrates on consumer outreach and education about the drought conditions rather than enforcement because the water reductions are voluntary.Phoenix has weathered every drought without having to impose forced water use restrictions or prohibitions thanks to long-term planning, investments in alternate water supply options, and a track record of success with water conservation.To learn more about Phoenix visit:
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How long does it take for the Earth to make one round-trip around the Sun?
Answer: Earth revolves around the sun in 365 days, 5 hours, 59 minutes and 16 seconds. The time a planet takes to revolve around the sun is called a year
Explanation:
Answer: Three hundred sixty-five days and 6 hours.
Explanation:
Which of the following correctly lists the levels
of organization of the biosphere from smallest
to largest?
A. population, species, community, ecosystem, biome
B. biome, ecosystem, community, population, species
C. species, population, community, ecosystem, biome
From smallest to largest, the biosphere is organized into species, populations, communities, ecosystems, and biomes.
Organization of the biosphereThe biosphere, which includes all other levels, is the highest level of organization for living things. Organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere are the biological levels of organization of living things, going from the simplest to the most complex.
Importance of BiosphereThe ecosystem required for survival is provided by the biosphere. The biosphere's weather is something that living things should be able to adapt to. Ecosystems support biodiversity, and the biosphere is a dependable source of food for all life on Earth.
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Answer: C. species, population, community, ecosystem, biome
What caused the planets and the Sun to have spherical shapes? Type here to search A force of inertia that pulls matter in a planet or star away from the center equally in all directions A gravitational force that pulls matter in a planet or star away from the center equally in all directions A force of inertia that pulls matter in a planet or star toward the center equally in all directions A gravitational force that pulls matter in a planet or star toward the center equally in all directions
Answer:
A planet's gravity pulls equally from all sides. Gravity pulls from the center to the edges like the spokes of a bicycle wheel. This makes the overall shape of a planet a sphere, which is a three-dimensional circle.
can you help me please.
Qualitative observations are observations made with the senses; examples are taste, odor, color, texture, mood.
Quantitative observations are observations made using instruments like thermometer; examples include volume, mass, temperature, distance, height, etc.
What are observations?Observations refer to the features of an object or an event that can be measured as a result of the changes or differences between these features.
In the scientific method of discovery, the first method involves observation.
Observations then leads to questions whose answer are then sought for through hypotheses and experiments.
There are two types of observations in science:
qualitative observations, andquantitative observationsQualitative observations are those observations which are made using the senses of sight, smell, touch, taste, and hearing.
Examples of qualitative observations include; taste, odor, color, texture, mood.
Quantitative observations are observations which can be expressed in terms of numbers and are measured using instruments such as thermometers, rulers, balances, etc.
Examples of quantitative observations include volume, mass, temperature, distance, height, etc.
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One of the molecules involved in coupling anabolism (i.e., harvesting energy from precursors) to catabolism (building macromolecules) in living systems is:___________
One of the molecules involved in coupling anabolism (i.e., harvesting energy from precursors) to catabolism (building macromolecules) in living systems is Adenosine triphosphate (ATP).
Define Adenosine triphosphate (ATP)?An organic substance called adenosine triphosphate powers a variety of biological functions in living cells, including muscular contraction, nerve impulse transmission, condensate dissolving, and chemical production.
what is difference between anabolism and catabolism?The body's metabolism is a critical component of growth, development, and effective operation. Based on how they function, it can be divided into two types: catabolism and anabolism. The way molecules are used by the organism in catabolism and anabolism are the main distinctions. Anabolism uses energy to produce the molecules that the body needs to function. The breakdown of complex molecules during catabolism, on the other hand, results in the release of energy that the body can use.
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2. Explain why a bear will need the following;
a. Food and water
b. Shelter.
c. Mates to reproduce young ones.
Answer:
Competition for food, water, shelter, predation by bears and wolves, and mates would all increase if the population is large and dense.
Explanation:
First of all every living things needs basic food and water to survive.
And without shelter the population would not survive natural disasters and Mother Nature.
They produce young’s ones to keep population steady and not go extinct.
Answer:
A bear is a form of life, and like every form of life, it it has basic needs that have to be met. All organisms need water to survive. Organisms take in food to turn into energy. Without those, the bear would not be able to function and would die. Shelter is needed for protection, essentially. Having a safe place for the bear can shield it from harsh weather, and gives the bear a place to stay safely. If there weren't any mates for the bear, there would not be any way for it to repopulate. The bear will eventually die and there wouldn't be anything to take its place. If this were to happen on a large scale, the bear population would die off, ultimately throwing off the ecosystem and causing a major imbalance in nature.
Scientific research led to the discovery that bacteria cannot grow in the presence of a certain type of mold.
Further research revealed that the mold produced a chemical with antibiotic properties.
Which statement best describes the impact of this scientific research?
• A. It harmed the environment because it led to the development of harmful pesticides.
O B. It benefited society because it led to the widespread use of
penicillin, which saved many lives.
• C. it had a positive impact on the environment because it restored an endangered species.
D. It negatively affected society because it led to the production of mold that could harm humans.
Scientific research led to the discovery that bacteria cannot grow in the presence of a certain type of mold. It benefited society because it led to the widespread use of penicillin, which saved many lives.
Answer no B is correct.
During World War II, penicillin was mass-produced and used to treat infections in wounded and ill soldiers. Historically, infections had killed more soldiers at war than battle injuries, Markel wrote. The discovery of penicillin decreased the death rate from bacterial pneumonia in soldiers from 18% to 1%.
The discovery of penicillin changed the world of medicine enormously. With its development, infections that were previously severe and often fatal, like bacterial endocarditis, bacterial meningitis and pneumococcal pneumonia, could be easily treated.
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Scientific research led to the discovery that bacteria cannot grow in the presence of a certain type of mold. It benefited society because it led to the widespread use of penicillin, which saved many lives.
Option number B is correct.
Penicillin was developed in large quantities and utilized to treat infections in sick and injured soldiers during World War II. In the past, Markel said, illnesses had killed more men in combat than injuries. When penicillin was discovered, the mortality rate among troops from bacterial pneumonia dropped from 18% to 1%.
The discovery of penicillin significantly altered the field of medicine. With its advancement, illnesses like bacterial endocarditis, bacterial meningitis, and pneumococcal pneumonia that were previously severe and frequently fatal may be managed with ease.
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help me label this pls i can't find it anywhere
The provided image is an image of human cell showing different cell organelles. These are the Golgi complexes, mitochondria, Cytoplasm, Endoplasmic reticulum (ER), nucleus, lysosome and plasma membrane respectively.
How can be the image pointed from a to f as asked?
a. Golgi complexes
b. Mitochondria
c. Cytoplasm
d. Endoplasmic reticulum (ER)
e. Nucleus
f. Lysosome
g. Plasma membrane.
All are the organelles of the human cell embedded in the cytoplasm and surrounded by the plasma membrane. Here the endoplasmic reticulum can be of two type, one is the rough endoplasmic reticulum (RER) and another is the smooth endoplasmic reticulum (SER).
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The answer is a. Golgi complexes
b. Mitochondria
c. Cytoplasm
d. Endoplasmic reticulum (ER)
e. Nucleus
f. Lysosome
g. Plasma membrane.
What are Golgi complexes used for?Proteins and lipid (fat) molecules are prepared for usage both within and outside of the cell by the Golgi complex. A cell organelle is the Golgi complex. also known as the Golgi body and apparatus.
In cells that produce and secrete significant amounts of chemicals, the Golgi apparatus tends to be bigger and more numerous; for instance, the immune system's plasma B cells, which release antibodies, have notable Golgi complexes.
The Golgi complex is where?The nucleus and the Golgi are in close proximity. Perinuclear bodies are what they're called, and the endoplasmic reticulum is also not far from them. Additionally, proteins that exit the endoplasmic reticulum enter the Golgi for additional processing.
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Using Chargaff's Rule, if there are 23 Thymine this means there has to be how many Adenine ?
Answer:
23
Explanation:
Chargaff's rules state that in the DNA of any species and any organism, the amount of guanine should be equal to the amount of cytosine and the amount of adenine should be equal to the amount of thymine
A cell that has a 1% NaCl (salt) solution inside the cell. The cell is placed
in an environment that is a 3% NaCl (salt) solution. The solute cannot move.
Create an argument about what will happen to the cell that is in this
environment. Remember, that the easiest way to create an argument is to
create a CER. (Hint: Set this up as a CER).
The cell in question will lose water to its environment because it is hypotonic to its surrounding environment.
What is an hypotonic solution?An hypotonic solution is a solution that have a lower osmotic pressure than another solution i.e. it has a lower solute concentration compared to another solution.
According to the osmotic principle, water will move from a region of lower concentration of solute to a region of higher concentration of solute across a semipermeable membrane.
In this question, a cell that has a 1% NaCl (salt) solution inside the cell is placed in an environment that is a 3% NaCl (salt) solution.
This means that the cell is hypotonic to the solution in the environment, therefore, it will lose water to its environment.
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What is the first thing you should know to ensure successful recovery after an animal is shot?.
The name for minimum energy expended to keep a resting, awake body alive is _______________. This represents about 60% to 70% of total energy expenditure.
Answer:
basal metabolism
Explanation:
During your speech, you use an enlarged replica of a dna molecule to explain a genetic concept. you are using which type of visual aid?
During your speech, you use an enlarged replica of a dna molecule to explain a genetic concept. you are using Model visual aid.
Visual aids are anything that can be seen, such graphs, pictures, videos, etc., that is used in addition to spoken information. Speech support that is visibly visible rather than verbal is known as a visual aid. This could be a graph, list, illustration, model, etc (see the text on page 330 for a complete list). When speaking, using visual aids might help the audience understand what you're saying on a deeper level.Model: A visual representation used to describe how a system, object, or event works. • Props: Things used in plays and other similar entertainment to further the plot. Objects. Real things can sometimes be used as visual aids to strengthen your presentation.learn more about Visual aids here: https://brainly.com/question/3610367
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How would you classify the interaction between coral and the algae that live in their tissues?.
What creates a sense not only of enclosure and connection, but also movement and direction?.
The creates a sense not only of enclosure and connection, but also movement and direction is implied line creates a sense not only of enclosure and connection, but also movement and direction
Implied lines are lines that aren't really there, but that are propose by other things in an artwork.Implied Lines are Lines that are indicated in artwork at edges where two shades meet, where a from ends and the space around it begins, or by positioning several objects or figues in a row.Line is an element of art that is to define space, contours, and outlines or suggest mass and volume. It possibly marks a continuous mark made on a surface with a sharped edge tool or implied by the edge of shapes and forms.To know more about implied line visit : https://brainly.com/question/2807939
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Filtration of samples to remove microbial cells typically use micropore filters with pore sizes of?
The size of the pores should be in micrometeres.
What is the process of the filtration membrane to remove bacteria?Filtration uses membranous filters that have tiny pores that let the liquid pass through but prevent bigger particles such as bacteria to pass through the filter. Therefore, the smaller the pore, the more likely the filter is to stop more things from going through it.
There are four types of membrane are Known as Reverse osmosis, , ultrafilteration and microfilteration in order of size.
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