You prepared a specimen for light microscopy and stained it using the Gram staining procedure but failed to see anything when you looked through your light microseope. Select ALL the things in the following list that were done incorrectly and may explain your results. Apply crystal violet to the bacterial sample fixed on the microscopic slide for 5 seconds. As the final step, apply safranin (a counterstain) for 60 seconds and rinse with water. After the first step, apply iodine for 1 minute and rinse with water. After the crystal violet step, decolorize with alcohol for 60 to 90 seconds.

Answer:

Cold, salty water is dense and sinks to the bottom of the ocean while warm water is less dense and remains on the surface. ... Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface.

Explanation:

brainliest please

The separating of mitospores from a fungus, the deliberate shedding of a bodily part in animals, and the dropping of leaves by deciduous plants throughout the fall are all referred to as abscission in science.

Without the involvement of meiosis, asexual spores (mitospores) are produced following mitosis. Asexual spores produced by fungi come in a colossal diversity. Several species are capable of producing a variety of these spores.

Intranuclear divisions occur during mitosis in fungi; during this 'closed mitosis,' the division spindle develops inside the nucleus. The "open mitosis" that most animals and plants undergo, in which the nuclear envelope is torn apart and microtubules enter the nuclear space to form the division spindle, is significantly different from this.

To know more about fungus visit:-

https://brainly.com/question/11264030

#SPJ1

The microorganisms developed FIRST due to the early environmental conditions on Earth were prokaryotic and anaerobic (Option b). Moreover, eukaryotic cells evolved from simpler forms of life.  

The first microorganisms were prokaryotes that evolved in absence of oxygen.

These prokaryotic microorganisms originated approximately 4 billion years ago. During this period, the earth's early atmosphere did not contain oxygen gas.

In consequence, the first microorganisms were anaerobic bacteria (i.e., prokaryotes), which evolved in absence of oxygen.

Moreover, the first eukaryotic organisms appeared approximately 1.5 billion years ago and evolved from simpler forms of life (i.e., prokaryotic microorganisms).

Learn more in:

https://brainly.com/question/8946908?referrer=searchResults

One environmental drawback of fraction is Air pollution due to the toxic chemicals used during fracking.

Fracking also increases greenhouse gases, and causes earthquakes.

Photic Zone is the top layer, closest the outer layer of the sea and is likewise called the daylight layer. The water in this area receives enough light to allow for photosynthesis.

The area of water that can be penetrated by light is called the photic zone. Because of this, the photic zone is characterized by the presence of plant life, particularly phytoplankton and larger attached algae.

The ocean is typically divided into three zones, each of which is given a name based on how much sunlight it gets: the euphotic, dysphotic, and photic zones.

Learn more about photic zones:

https://brainly.com/question/11896952

#SPJ1

Answer:

predator or a.pex predator

An animal with no natural enemy is an apex predator. Apex predators are also known as top predators or alpha predators.

They are species that reside at the highest level of the food chain within their ecosystems. They have no natural predators and primarily feed on other animals. Apex predators play a critical role in maintaining the balance and functioning of their respective ecosystems.

These predators are often characterized by their exceptional hunting skills, agility, strength, and ability to control the populations of their prey. They exert top-down control on the food chain by keeping the populations of lower-level consumers and herbivores in check, which in turn has cascading effects on the entire ecosystem. Thus, apex predators have no natural enemies.

Learn more about apex predators, here:

https://brainly.com/question/14810553

#SPJ6

For detailed immunophenotyping of the primary cell subsets found in human peripheral blood, a 40-color flow cytometry-based panel was created.

Learn more about the Flow cytometry with the help of the given link:

https://brainly.com/question/10371822

#SPJ4

Electrophoresis tool is used for PCR result analysis. thus option D is correct.

Electrophoresis has the ability to pass charged molecules  in an  electric field, it is the separation of proteins which  is usually accomplished using polyacrylamide gel electrophoresis  (PAGE).

In this process where the proteins are driven by an applied current through a gel based matrix.

these polyacrylamide gel is formed as a thin slab between two glass plates or as a  cylinder within a glass tube.

The primary objective of electrophoresis is to separate DNA molecules based on their size which  may be completed on a gene of interest prior to electrophoresis.

For more details regarding electrophoresis, visit

brainly.com/question/6885687

#SPJ2

Answer:

SNP analysis

Explanation:

Correct on my exam

Answer:

Organisms

Hope this helped

Bones are covered as well as lined by a protective tissue renowned to as periosteum. The inner layer comprised basically of osteoblasts and osteoclasts.

Osteoblasts are in charge of creating new bones and are essential for bone growth and repair.

They create and secrete the collagen and other organic elements of the bone matrix, which helps to speed up mineralization.

On the other side, osteoclasts are involved in the process of eliminating and disintegrating old or damaged bone tissue, which is known as bone resorption.

The mineralized matrix is broken down by the enzymes and acids they produce, allowing for the remodelling and reshaping of bones.

Thus, together, osteoblasts and osteoclasts keep the ratio of bone creation to resorption in check, which benefits the general well-being and structural integrity of bones.

For more details regarding bones, visit:

https://brainly.com/question/29526822

#SPJ4

Answer:

A

Explanation:

By the law of superposition, the oldest rocks are the bottom layer of quaternary rock, labeled. The correct option is A.

What is the law of superposition?

One of the geological laws that geologists use to calculate the relative ages of strata or layers, is the law of superposition. According to this theory, rock layers are stacked or deposited one on top of the other.

The bottom will have the oldest rock strata and the top will have the youngest. Quaternary rocks are considered as oldest rocks. They can be 2.6 million years ago.

With climatic changes and the heat and pressure from the earth's crust, the rocks evolve and convert into quaternary rocks.

Thus, the correct option is A. the bottom layer of quaternary rock is labeled.

To learn more about the law of superposition, refer to the below link:

https://brainly.com/question/2069576

#SPJ5

Plants provide shelter and shade from the sun which support the emergence of land animals. Therefore, option (B) is correct.

The area of the planet that is home to all forms of life, including animals, plants, and microorganisms, is referred to as the biosphere.

Because they are the main creators of all other organisms, plants have a significant place in the biosphere. This indicates that these organisms are the ones responsible for the production of organic compounds, which are then taken in by other creatures. They do this via a process known as photosynthesis, which utilises the light energy provided by the sun.

They provide shelter to many birds and animals like a home. Also, they provide food for birds, animals and human beings in the form of leaves, vegetables, fruits and roots

Learn more about biosphere, here:

https://brainly.com/question/13219657

#SPJ1

Answer:

FALSE!!

Explanation:

Gravitropism allows plants to respond to gravity, enabling them to grow their roots downward and their stems upward. This response helps plants anchor themselves in the soil and optimize their access to light and nutrients.

Phototropism allows plants to respond to light by growing towards it. This response helps plants maximize their exposure to sunlight, which is crucial for photosynthesis, the process by which plants convert light energy into chemical energy to fuel their growth and development.\(\huge{\mathcal{\colorbox{black}{\textcolor{lime}{\textsf{I hope this helps !}}}}}\)

♥️ \(\large{\textcolor{red}{\underline{\texttt{SUMIT ROY (:}}}}\)

The true statement based on the phylogenetic tree is: "Ray-finned fish evolved before sharks."

In the given phylogenetic tree, the branches representing ray-finned fish and sharks originate from a common ancestor.

However, the branch representing ray-finned fish diverges earlier in evolutionary history compared to the branch representing sharks. This indicates that ray-finned fish appeared before sharks in the evolutionary timeline.

Phylogenetic trees illustrate the evolutionary relationships between different species or groups of organisms. The branching patterns in the tree show the common ancestry and divergence of different lineages.

By analyzing the structure of the phylogenetic tree, we can infer the relative timing of evolutionary events and the relationships between different groups of organisms.

In this case, the phylogenetic tree indicates that ray-finned fish evolved before sharks, suggesting that ray-finned fish have a longer evolutionary history and are more ancient than sharks.

It is important to note that this statement does not provide information about the relationship between crocodiles, amphibians, primates, rodents, rabbits, and other groups mentioned in the given options.

For more such answers on phylogenetic tree

https://brainly.com/question/2189834

#SPJ8

Question

Use the phylogenetic tree to the right to choose the true statement below.

Crocodiles are more closely related to amphibians than to primates.

A. Ray-finned fish evolved before sharks.

B. Rodents and rabbits are most closely related to primates.

C. Amphibians are more closely related to ray-finned fish than to primates.

Gel electrophoresis is a widely used technique in molecular biology that allows for the separation of DNA fragments based on their size and charge.

The process involves several steps:

Preparation of the gel: A gel matrix, usually made of agarose or polyacrylamide, is prepared and poured into a gel tray. Small wells are created at one end of the gel, which will hold the DNA samples.

Loading the samples: DNA samples, which have been treated with restriction enzymes to generate fragments of different sizes, are loaded into the wells of the gel.

Applying an electric field: The gel tray is immersed in a buffer solution, and an electric field is applied across the gel. One end of the gel serves as the positive electrode (anode), and the other end as the negative electrode (cathode).

Migration of DNA fragments: When the electric field is applied, negatively charged DNA fragments migrate through the gel towards the positive electrode. Smaller fragments move more quickly through the gel matrix, while larger fragments move more slowly.

Visualization of DNA bands: After the electrophoresis is complete, the DNA fragments are visualized using stains or fluorescent dyes. The bands formed on the gel represent the separated DNA fragments, with each band corresponding to a specific size.

By analyzing the position and intensity of the DNA bands, researchers can determine the size of DNA fragments and gain insights into various genetic phenomena, such as gene mapping, DNA sequencing, and genetic variation analysis.

Know more about Gel electrophoresis here:

https://brainly.com/question/6885687

#SPJ8

Answer:

The positioning of the cool and fern rooms on the east side of the greenhouse can be attributed to several factors, including the requirements of the plants and the availability of sunlight.

Explanation:

Sunlight: Placing the cool and fern rooms on the east side allows them to receive optimal morning sunlight. As the sun rises in the east, these rooms can capture the early morning light, which is generally gentler and less intense compared to the harsh afternoon sun. This arrangement provides a favorable light intensity and duration for the plants' growth and photosynthesis.

Temperature: The east side of a greenhouse tends to experience lower temperatures compared to the west side during the afternoon. By locating the cool room on the east side, the plants inside can benefit from the relatively cooler temperatures, which may be crucial for certain plant species that thrive in cooler environments.

Shade: Placing the fern room on the east side allows it to receive some shade from the taller structures or trees that might be present on the west side of the greenhouse. Ferns generally prefer indirect or filtered light rather than direct sunlight. The shading effect helps create a more suitable environment for ferns by reducing the intensity of sunlight and preventing potential leaf burn or dehydration.

Microclimate control: Separating the cool and fern rooms from other areas of the greenhouse, such as the warm or sun-loving plants, allows for better control of the microclimates within the different sections. The cool room may require specific temperature and humidity settings to mimic cooler climates, and keeping it separate helps maintain the desired conditions without affecting the rest of the greenhouse.

Overall, the placement of the cool and fern rooms on the east side of the greenhouse takes into account factors such as sunlight exposure, temperature preferences, shading requirements, and the need for microclimate control to create suitable environments for the plants in those rooms.

Answer:

if it had excess nutrients

Explanation:

it increases the amount of plant and algae growth

Organizational control is a type of management control that is focused on ensuring that all elements of the organizational structure are in alignment.

This type of control ensures that the different divisions, departments, and teams within the organization are all operating in the same direction - towards the same goals. It does this by evaluating group behaviors and processes with respect to agreed upon objectives. It also looks at how each component of the organization is supporting each other, and if they are working together efficiently to maximize performance.

Organizational control looks at the whole organization as a system that needs to be managed and integrated effectively in order to ensure organizational success and optimal performance. It is critical that the different parts of the organization be well-managed in order to be successful, and organizational control helps to ensure that this happens.

know more about departments here

https://brainly.com/question/11539179#

#SPJ11

The palatine tonsils are located between the palatoglossal and palatopharyngeal arches in the throat. The tonsils are gland-like structures located in the throat that play a role in fighting off infections. Palatine tonsils are one of three sets of tonsils that are present in the human body.

They are located between the palatoglossal and palatopharyngeal arches in the throat. The palatoglossal arch is located in front of the palatine tonsils, while the palatopharyngeal arch is located behind them. These arches separate the oral cavity from the pharynx.

A tonsillectomy is a surgical procedure to remove the tonsils, which are located at the back of your throat, near your tongue. Tonsillectomies are usually performed on an outpatient basis and take about 20 to 30 minutes. Recovery usually takes one to two weeks. The palatine tonsils are located between the palatoglossal and palatopharyngeal arches in the throat.

The palatine tonsils are located between the palatoglossal and palatopharyngeal arches in the throat. The palatoglossal arch is located in front of the palatine tonsils, while the palatopharyngeal arch is located behind them. The palatine tonsils are located between the palatoglossal and palatopharyngeal arches in the throat. They are gland-like structures located in the throat that play a role in fighting off infections.

Tonsillectomies are usually performed on an outpatient basis and take about 20 to 30 minutes. Recovery usually takes one to two weeks.

To know more about tonsils, visit;
https://brainly.com/question/13021268
#SPJ11

Reuptake is a process that occurs in the presynaptic neuron after a neurotransmitter has been released and binds to a receptor on the postsynaptic neuron. The neurotransmitter is then taken back into the presynaptic neuron or into nearby neuroglia or neurons, reversing the direction of the action potential. In reuptake, the parts of neurotransmitters floating in the synapse come together to restore levels.

This occurs through a process called reuptake transporters, which are responsible for the reabsorption of the neurotransmitter into the presynaptic neuron. This process helps to regulate the amount of neurotransmitter in the synapse and maintain proper neurotransmitter function. Another mechanism involved in regulating neurotransmitter levels is the breakdown of neuropeptides into amino acids, which act as neurotransmitters.

This occurs through a process called proteolysis, which breaks down the neuropeptide into its component amino acids. These amino acids can then be taken up by the presynaptic neuron and repackaged into new neurotransmitter vesicles for future release. Enzymes also play a role in regulating neurotransmitter levels.

An enzyme may break down a neurotransmitter that has already been released into the synapse, and another enzyme may then rebuild the neurotransmitter. This process helps to maintain proper neurotransmitter function and prevent overstimulation of the postsynaptic neuron.In conclusion, reuptake is an important mechanism for regulating neurotransmitter levels and maintaining proper neurotransmitter function. Through reuptake transporters, neuropeptide breakdown, and enzyme activity, the amount of neurotransmitter in the synapse is carefully regulated to prevent overstimulation and ensure proper neural communication.

To know more about process visit:

https://brainly.com/question/14832369

#SPJ11

Answer:

i think the answer is bipolar

Answer:

A hat? or Sunscreen?

Explanation:

I really don't know which one works better

The correct answer as to the characteristics the best explains why algae blooms are more likely to grow out of control in lakes than in rivers is that lakes consist of still water where photosynthetic organisms can grow undisturbed.

The stability of of plants and photosynthetic process in lakes provide a ground for excessive thriving of plants during enrichment, unlike in flowing rivers.

More on eutrophication can be found here: https://brainly.com/question/17257452

The answer choice which best supports the idea that most attempts by scientists to create new chemical elements will fail is that: (D) scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success.

A chemical element can be defined as a pure substance that comprises atoms having the same atomic number (number of protons) in its nuclei and as such, it is the primary constituent of matter. Also, a common characteristics for all chemical elements found on the periodic table is mass and volume.

In Chemistry, some examples of a chemical element include the following:

In this scenario, we can reasonably infer and logically deduce that a statement which indicates that an attempt by scientists to create new chemical elements will fail is stating that "scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success." because an experiment to create new chemical elements must be tested and they all should have multiple successful results.

Read more on elements here: brainly.com/question/24373113

#SPJ1

Complete Question:

Which of the following answer choices BEST supports the idea that most attempts by scientists to create new elements will fail?

(A) Scientists have to create a target with a carefully chosen atom; this is a process that takes months.

(B) Scientists have to smash atoms together and get them to stick; a positive charge makes them repel each other.

(C) Scientists have to bombard particles with specific protons; specialized atoms combine with neutrons.

(D) Scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success

this is where you can get

The difference between parallel venation and reticulate venation​ is in parallel venation, the vein of the leaf blade is in a parallel pattern, and in reticulate the vein of the leaf blade is a net or web-like structure.

Venation is the pattern of veins present in the leaves. There are different patterns of veins present in the leaves, parallel venation, for example, banana leaf, and reticulate venation​, for example, papaya leaf.

Thus, In contrast to reticulate venation, where the vein of the leaf blade is arranged in a net-like pattern, parallel venation has the vein of the leaf blade arranged in a parallel pattern.

Learn more about venation

https://brainly.com/question/1747870

#SPJ2

The primary function of an axon is to conduct electrical signals that help cells communicate.

Correct option is D.

Axons are parts of neurons—the cells that make up the nervous system—and their job is to transmit electricalimpulses, known as action potentials, away from the neuron's cell body. These action potentials allow the neuron to send signals to other neurons, muscles, or glands throughout the body, which is essential for many of the body's processes, such as movement, vision, and cognition.

As such, axons play a major role in both forming and maintaining neural connections. In addition to conducting electrical signals, axons also provide structural support for the neuron and help protect the brain from damage, both physical and chemical. This is accomplished through axonal insulation, which acts like a conductive sleeve to prevent signal loss and keep any potential harm away from the neuron's more sensitive structure.

Correct option is D.

know more about electrical signals here

https://brainly.com/question/11931240#

#SPJ11

In order to extract DNA from strawberry cells, we will need lyse, knife, detergent, etc.

The cellular level is the level of cells. The cell is the basic unit of life. It is the smallest level. The strawberry is a plant, and it is made up of cells to remove cells, scientific methods are used.

The needed items for the extraction of DNA from strawberry cells are:

Therefore, we will require lyse, a knife, a strawberry, detergent, etc. to extract the DNA from strawberry cells.

To learn more about the cellular level, refer to the link:

https://brainly.com/question/28163219

#SPJ2

1)An autosomes is any of the numbered chromosomes, as it is opposed to sex chromosomes humans have 22 pairs of autosomes and has one pair of sex chromosomes that is X and Y chromosomes

2)The X and Y chromosomes are also known as sex chromosomes it determines the biological of the sex of an individual females inherit an X chromosome from the father for a XX genotype while the males inherit the Y chromosome from the father for a XY genotype

Note : mother's only can pass on X chromosome

3) During the DNA synthesis phase the cell replicates chromosomes during its mitosis phase the duplicated chromosomes are segregated (that sets apart from the rest of from everyone that gets divided is called segregated)and migrating to opposite of the cell .

4)*The first stage of the cell cycle is interphase

*The second stage of the cell cycle is division of the nucleus

*The third stage of the cell cycle is cytokinesis

Cytokinesis means th division of cytoplasm of a cell at the end of mitosis bringing about the seperation into the two daughter cells is called cytokinesis.

Answer:

This Is hard For you and me but I have Studied this and the answer are thus this

Explanation:

Metaphase I match with statement 01.

Anaphase II  matches with statement 02.

Telophase II  matches with statement 03.

Metaphase II  matches with statement 04.

S phase matches with statement 05.

Telophase II  matches with statement 06.

Prophase II matches with statement 07.

Prophase matches with statement 08.

Telophase II matches with statement 09.

Prophase I match with statement 10.

Telophase I match with statement 11.

Anaphase I match with statement 12.