When using a wet mount on a brightfield microscope, what could you add to your specimen?
Answers
In a wet mount, the specimen is held in place between the slide and cover slip by a drop of water. On the slide, place a sample. Put a drop of water on the sample with a pipette. Place the cover slip's edge over the sample and slowly drop it into position using a toothpick or something similar.
What kind of solution should be prepared a moist mount?Wet mounts may be created using a variety of substances. You may use water, immersion oil, and glycerin (glycerol), with water likely being the most popular.
In a wet mount, a little drop of water is applied to the slide, and the specimen is covered with a cover slip to preserve it.
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Related Questions
Adaptive melanism describes selection for
a. mottled pigmentation
b. lighter pigmentation
c. darker pigmentation
d. more colorful pigmentation
Please select the best answer from the choices provided
A
B
С
Answers
Answer:
Its C
Explanation:
Adaptive melanism describes selection for darker pigmentation fade away within 6 to 12 months.
The correct answer is C
Why do pigmentations occur?Skin cells create a pigment called melanin that gives skin its color. If the skin cells are damaged or ill, they could produce too much melanin. There can be a melanin deposit there, giving it a darker appearance.
What is the most effective pigmentation therapy?If you want to reduce pigmentation more quickly than with microdermabrasion, you might want to consider dermabrasion. The results are best on lighter skin. All skin types, however, are susceptible to further hyperpigmentation as just a result of the operation. After around eight weeks, the hyperpigmented spots that have just appeared may lighten.
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Which of the following statements accurately explains the relationship between time of day and water transport through the plants? (Answer choices in the photo, and a graph.)
Answers
The best option would be the letter B. At night, the stomata are closed so water in the leaves cannot evaporate, which reduces the need fro absorption of water at the root.
An archaeologist working at a site in Arizona found pottery shards, corn cobs
and squash seeds, and lengths of rough wooden polls in the structures. The
archaeologist reported at a news conference that the ancient people were
farmers. What evidence did the scientist use to support this report?
(it’s a observation and inference question! i need two observations and two inferences)
Answers
Answer:
no yo te ayudo si dime es
Explanation:
1. What adaptation has arisen in sap-feeding Hemiptera to deal with dilute diets?
Salivary secretions
A long stomach
A filter chamber
Large mandibles
2. What plays a major role in kin recognition in social insects?
Morphology
Auditory signals
Visual cues
Pheromones
3. Which native bees are social?
Leafcutter bees
Mason bees
Stingless bees
Carpenter bees
4. What is a negative effect of honeydew?
Attracts ants
Transmits plant viruses
Sooty mold
All of the above
Answers
all of the above are negative effects of honeydew.1. Hemiptera are an order of insects, also called true bugs. Sap-feeding Hemiptera, such as aphids and whiteflies, have a filter chamber adaptation to deal with dilute diets.
This filter chamber is also known as the food canal. This adaptation allows them to extract all the necessary nutrients from the plant sap.2. Pheromones play a major role in kin recognition in social insects. Kin recognition allows social insects to identify and cooperate with close relatives, such as siblings or offspring. This helps in the survival of the colony.3. Among the native bees, the social bees are the stingless bees. These bees live in colonies, and they work together to maintain the colony. They build nests, collect pollen and nectar, and care for their young.4. Honeydew is a sugary substance excreted by sap-feeding insects. It can have negative effects on plants. It attracts ants, which can protect the insects producing the honeydew from predators. Honeydew can also transmit plant viruses. Additionally, honeydew can lead to the growth of a sooty mold, which can reduce photosynthesis in plants.
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Which of the following cycles nitrogen in an ecosystem?
I. decomposition
II. nitrogen fixation
III. photosynthesis
Answers
Answer:
II. nitrogen fixation
Explanation:
If you burn wood in a fireplace, which type of energy resource are you using?
Answers
Answer:
Potential energy
Explanation:
Batteries, biomass, petroleum, natural gas, and coal are examples of chemical energy. Chemical energy is converted to thermal energy when people burn wood in a fireplace or burn gasoline in a car's engine.
Answer: Potential energy
Explanation:
which cytoskeleton component plays a major role in the formation of the mitotic spindle?
a. intermediate
b. filaments
c. microfilaments
d. microtubules
Answers
Microtubules play a major role in the formation of the mitotic spindle during cell division. The correct answer is (d ) microtubules
The mitotic spindle is a dynamic structure composed of microtubules that forms during mitosis and is responsible for separating the duplicated chromosomes into two daughter cells.Microtubules are hollow tubular structures made up of tubulin protein subunits. They form the framework of the mitotic spindle and are involved in capturing and organizing the chromosomes, as well as facilitating their movement during cell division.Other components of the cytoskeleton, such as intermediate filaments and microfilaments, have important roles in cellular structure and function but are not primarily involved in the formation of the mitotic spindle.
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Which statement best describes the amount of catalyst that remains at the end of a reaction? More catalyst is present at the end than at the beginning of the reaction. Less catalyst is present at the end than at the beginning of the reaction. The amount of catalyst is the same at the end as at the beginning of the reaction. The catalyst is consumed by the reaction, so none remains at the end of the reaction
Answers
Answer:
C: The amount of catalyst is the same at the end as at the beginning of the reaction.
Explanation:
I did the test and got it right.
Answer:
c..
Explanation:
c..
I just need 39 and 40, you can do 41 if you want
Answers
40- Amino Acid
Mark brainliest if it helps please
Do you think NASA invented thunderstorms to cover up the sound of space battles? I found this on google and I want to know what yall have to say about it
Answers
Select the correct answer.
Which sentence describes an example of natural selection?
A.
An insect has a random gene mutation that gives it an unusual coloring.
B.
Pedigree dogs are selected by humans for breeding.
C.
A child inherits a rare genetic disorder from his parents.
D.
Cheetahs with longer legs are more likely to capture prey.
Answers
Answer:
D. Cheetahs with longer legs are more likely to capture prey.
Explanation:
Compost is made by filling a pit with dry leaves and other vegetable wastes. This is covered up with soil and kept
damp. It is frequently mixed to speed up the process. Which of the following processes occurring in nature is the MOST similar to composting, and enhances the fertility of the soil?
Answers
The process of composting, where organic matter is broken down to create nutrient-rich soil, is most similar to the A. breakdown of dead material in the forest floor.
In forests, the forest floor accumulates dead leaves, branches, and other organic materials. These materials undergo a process called litter decomposition, where microorganisms such as bacteria and fungi break them down into simpler compounds. This decomposition releases nutrients back into the soil, enriching it and enhancing its fertility. This natural process is similar to composting because it involves the breakdown of organic matter and the creation of nutrient-rich soil.
Composting mimics this natural process by providing an optimized environment for the decomposition of organic matter. By filling a pit with dry leaves and vegetable wastes, covering it with soil, and maintaining proper moisture and aeration, composting accelerates the breakdown of organic materials. The frequent mixing or turning of the compost pile helps speed up the process by providing oxygen and distributing the decomposers more evenly.
Both composting and the breakdown of dead material in the forest floor involve the activity of microorganisms that break down organic matter, releasing nutrients and enhancing the fertility of the soil. They are essential processes for nutrient recycling in nature and contribute to sustainable agriculture and gardening practices. Therefore, Option A is correct.
The question is incomplete. find the full content below:
Compost is made by filling a pit with dry leaves and other vegetable wastes. This is covered up with soil and kept damp. It is frequently mixed to speed up the process. Which of the following processes occurring in nature is the MOST similar to composting, and enhances the fertility of the soil?
A. breakdown of dead material in the forest floor
B. formation of petroleum reserves under the ground
C. incorporation of nitrogen compounds in soil by lightning
D. absorption of soil nutrients by the root hairs of trees
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what are some global recommendations to help the environment
need help asap!!
Answers
Answer:
Recycling!
Explanation:
A basic answer, but a globally, recycling is one of the most well known ways to help the environment. It conserves energy, reduces air and water pollution, reduces greenhouse gases, and conserves natural resources. Stanford recycled, composted, and otherwise source reduced 62% of its waste and reduced landfill by 35%. Recycling paper alone cuts down 75% of air pollution!
Hydropathy plots can be used to predict ... extracellular fibrous proteins isoelectric points of proteins integral membrane proteins open reading frames in DNA
Answers
Hydropathy plots can be used to predict the location of proteins in the cell membrane. Hydropathy plots are a graphical representation of the hydrophobicity/hydrophilicity profile of a protein sequence.
Proteins, especially integral membrane proteins, have a unique sequence that determines their location within the cell membrane. These hydropathy plots assist in identifying the hydrophobicity of the protein at different regions of the amino acid sequence.
Hydropathy plots can predict whether a protein will have a transmembrane domain, which is important for integral membrane proteins.
The hydropathy index is used to measure the hydrophobicity of amino acids. By analyzing the hydropathy index, it is possible to identify transmembrane domains and amphipathic regions in proteins. Hydrophobic amino acids tend to be located within the membrane and can be used to predict the location of a protein.
Hydropathy plots can be generated using various software packages and tools, such as the Kyte-Doolittle hydropathy plot.
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The interaction between genes and development in behavior is known as:
A. extrinsic-intrinsic
B. Nature-nurture
C. gene environment
D. Developmental interaction
Answers
Answer:
B. Nature-nurture
Explanation:
genes = nature
development = nurture
A scientist is studying a cell and can clearly see that it has ribosomes and mitochondria. Which statement best describes how the cell could be classified?Which structure is unique to eukaryotic cells?
Answers
Answer:
The cell is eukaryotic because it contains mitochondria.
nucleus
Explanation:
The statement that best describes the way in which the cell would be classified is that the cell is eukaryotic because it contains mitochondria. The correct option is D.
What is eukaryotic cell?A eukaryote would be any cell or life form with a well-defined nucleus. The nucleus of a eukaryotic cell is surrounded by a nuclear membrane, which contains well-defined chromosomes.
The main difference between these two varieties of organisms is that eukaryotic cells have such a membrane-bound nucleus, whereas prokaryotic cells do not. Eukaryotes stockpile their genetic information in the nucleus.
Prokaryotes are organisms that lack a nucleus and various organelles in their cells.
Prokaryotes are classified into two groups namely bacteria and archaea, each of which has its own evolutionary lineage, according to scientists.
Thus, the correct option is D.
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Your question seems incomplete, the missing options of the question are:
The cell is prokaryotic because it contains ribosomes. The cell is prokaryotic because it contains mitochondria. The cell is eukaryotic because it contains ribosomes. The cell is eukaryotic because it contains mitochondria.Osmosis refers only to water molecules that enter through a semi-permeable membrane.
True
False
Answers
Answer:
True
Explanation:
Osmosis refers to the diffusion of water molecules ONLY.
Osmosis refers only to molecules that enter through the semi permeable. - True
Agriculture uses large amounts of water for imigation
Please select the best answer from the choices provided
T
F
Answers
Answer:F
Explanation: I just know
differentiate between middle and inner part of ear
Answers
Answer:
middle= This is the part through which sound travel inside the ear to the eardrum through the auditory canal . sound causes the eardrum nad it's tiny attached bones in the middle portion of the vibration and conducted to the nearby cochlea
inner part= the cochlea is the part of the inner ear . its main function is to transform sound into nerve impulses......
specialized cells of the dermal system in plants that function in gas exchange are called
Answers
Specialized cells of the dermal system in plants that function in gas exchange are called stomata.
The little apertures known as stomata are found on the epidermis of leaves. Stomata are visible under a light microscope. Stomata can be found on the stems and other portions of various plants. In gaseous exchange and photosynthesis, stomata are crucial. Through opening and closing, they regulate the rate of transpiration.
The stomata are made up of tiny pores termed stoma that are encircled by two guard cells. The turgidity of guard cells determines how frequently stomata open and close. The pore's surrounding cell wall is resilient and adaptable. Both monocots and dicots typically have different guard cell shapes, but the mechanism is the same in both. Guard cells have chloroplasts and are shaped like beans. They absorb light and have chlorophyll in them.
Hence, stomata cell plays role in gaseous exchange.
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Some traits, such as huntington's disease and polydactyly, are relatively rare in the human population even though they are dominant traits. explain how this can be the case.
Answers
Even though Huntington's disease and polydactyly are dominant traits, they are relatively rare in the human population. This can be attributed to factors such as incomplete penetrance, genetic variability.
The rarity of dominant traits like Huntington's disease and polydactyly can be explained by several factors. Firstly, incomplete penetrance plays a role, where individuals with the dominant allele may not express the trait due to other genetic or environmental influences. This leads to a lower prevalence of the trait in the population.
Secondly, genetic variability contributes to the rarity of these traits. The presence of other genetic factors or modifiers can influence the expression or inheritance of the trait, leading to variations in its occurrence. Additionally, genetic mutations that cause these traits may arise sporadically and not be present in a large proportion of the population.
Lastly, negative selection against individuals with these traits can occur. If the presence of the trait poses a significant disadvantage or reduces reproductive fitness, natural selection may act to reduce its prevalence in the population over time.
Overall, the rarity of dominant traits like Huntington's disease and polydactyly can be attributed to factors such as incomplete penetrance, genetic variability, and negative selection, which limit their occurrence in the human population.
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Drug Dosages. Thomas Young has 5 iggested the followiLe rule for caiculating the dosage of medicine for chidren 1 to 12 yr ofd. If a denctes the aduit. dosage (in midigrams) and if t is the child's ago (in years), then the child's dosage is given by the following function.
D(t)= at/t+12 Suppose the adult dosage of a substance is 280mg. Find an expression that gives the rate (in mg/year) of change of a child's cosage with respect to the child's age. D′(t)= What is the rate of change (in mg/year) of a child's dosage with respect to his or her age for a 3 -yr-old child? A 12 -yr-old child? (flound your answer to three decimal placesi) 3-yr-old _____ mg/year 12-yriold _____ mg/year
Answers
Given data: Adult dosage of a substance is 280mg. Rule for calculating dosage for children between 1 to 12 years of age is given by the function, D(t) = a * t / t + 12. To find the rate of change of this function with respect to the child's age, we need to differentiate the function with respect to t.
Let's differentiate this function with respect to t. d/dt [ D(t) ]= d/dt [ a * t / t + 12 ]
Using quotient rule,= [ a * (t + 12) - a * t ] / ( t + 12 )²= a / ( t + 12 )²
Thus, the rate of change of child's dosage with respect to child's age is given by D'(t) = a / ( t + 12 )².
Hence, the required expression is D'(t) = 280 / ( t + 12 )².
Now, substituting t = 3,
we get, D'(3) = 280 / (3 + 12)²
= 280 / 225
= 1.244 mg/year
Substituting t = 12,
we get, D'(12) = 280 / (12 + 12)²
= 280 / 576
= 0.486 mg/year
Therefore, the rate of change of a child's dosage with respect to his or her age for a 3-yr-old child is 1.244 mg/year and for a 12-yr-old child is 0.486 mg/year. We are given the formula, D(t) = a * t / t + 12, which represents the dosage for a child as a function of their age, t. To find the rate of change of this function with respect to the child's age, we need to differentiate the function with respect to t.
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Gene investigated the effect of moisture on the rate of growth of mold on bread. He put two identical slices of bread on separate plates. He made one slice moist and kept the other slice dry. He left the uncovered plates on a table for 2 hours. Then, he sealed them in plastic bags and put them in a dark, warm place. He looked at them each day for five days. After five days, he observed that 50 percent of the moist slice was moldy, and none of the dry slice was moldy. If Gene observed the slices for three more days, what would he most likely observe?
There would be less mold on the moist slice. There would be more mold on the moist slice. There would be the same amount of mold on each slice. There would be no change in the amount of mold on either slice
Answers
Answer:
More mold on the moist slice
Explanation:
Assuming that the trend continues, then after another 3 days, a higher percentage (more than the original 50%) of mold will be found on the moist slice, while the dry slice may either be unaffected or may develop very little mold.
A carnivore that eats other carnivores is a...
Answers
Answer:
canibal or carnivore
Explanation:
if you meat. you're a carnivore
what has lead to the evolution of antibiotic resistant bacteria?
Answers
Overuse of antibiotics, has lead to the evolution of antibiotic resistant bacteria.
The Antibiotic resistance occurs naturally, but misuse of antibiotics in humans is one of the main reasons.
This resistance does not depends upon the age
The mutations which happen in the gene of bacteria which causes disease even after antibiotics their role is to pass these genes along to their descendants and this is how antibiotic-resistant strains of bacteria are formed.
disadvantage of antibiotic resistant bacteria is that now it may leads to higher medical costs, longer hospital stays, and increased death rates.
even after new medicine development the threat will still exists,
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Help....I will mark as brainless if answered correctly
Although the birds of the Galapagos Islands looked very different from one another structurally, they all shared
something in common. What was the common thread?
A. They were all carnivores.
B. They were all nocturnal.
C. They were all different variations of the finch.
Answers
Answer:
I believe the answer is C. They were all different variations of the finch.
Explanation:
Although the birds of the Galapagos Islands looked very different from one another structurally, they all shared something in common. What was the common thread? They were all different variations of the finch.
Answer: C. They were all different variations of the finch.
Explanation:
Please help me!!! will give brainly to the person that gives me a real answer
Answers
Answer:
The thorns are the most obvious feature of a rose that was created by its adaption to the environment. The thorns are modified leaves which grow out of the stem. The rose adapted to predators who would feed heavily on its foliage or stem by growing thorns
Answer:
The thorns and don't know the other one. The other one might be its leaves but dont quote me
Module 3_Discussion In this module we discussed the Theory of Constraints. Looking at the recent Covid situation, how would you say the Theory of Constraints applied to the production of breathing masks in the United States? What did the U.S. government do to remove constraints when it came to vaccine production?
Answers
The Theory of Constraints addresses bottlenecks in mask production. The US government expedited vaccine development and production, increased funding, and secured essential supplies to remove constraints.
The Theory of Constraints (TOC) can be applied to the production of breathing masks in the United States by identifying and addressing the bottlenecks or constraints that hinder the production process. For example, during the early stages of the COVID-19 pandemic, there was a shortage of raw materials, manufacturing capacity, and distribution channels for masks. TOC would suggest focusing efforts on alleviating these constraints to increase mask production. This could involve sourcing additional raw materials, expanding manufacturing capabilities, optimizing production lines, and streamlining distribution logistics.
Regarding vaccine production, the U.S. government implemented several measures to remove constraints. They worked to expedite the regulatory approval process for vaccines, facilitating faster development and production. The government provided funding to vaccine manufacturers to expand their manufacturing capacity and ramp up production. They also invoked the Defense Production Act to secure essential supplies and equipment needed for vaccine production. These actions aimed to eliminate constraints such as limited production capacity, logistical challenges, and supply chain disruptions, allowing for a more efficient and accelerated vaccine production process.
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The correct question is:
Looking at the recent Covid situation, how would you say the Theory of Constraints applied to the production of breathing masks in the United States? What did the U.S. government do to remove constraints when it came to vaccine production?
Warm-Up
Type your response in the box.
Think about the different types of animals you’ve seen throughout your life. What characteristics do all of these animals share?
Answers
Answer:
snake crocodile
Explanation:
they are both reptiles and have a scaly skin and eye shape is similar
The only cells that are capable of photosynthesis are the ones that contain:
a nucleus
chloroplasts
mitochondria
a cell membrane
Answers
Answer:
Chloroplasts
Explanation:
Answer:
Chloroplasts :)
Explanation: