When preparing a specimen for light microscopy, the step that can be skipped is fixing.
A specimen is a substance or object used to depict, analyze, and sample a larger substance or population. It is usually a fraction of a substance or material that has been studied in a more comprehensive study. Specimens are used in scientific and medical research to evaluate, diagnose, or make predictions about the rest of the subject's constituents. They are collected from a broad range of subjects, from animals to plants to minerals.
A light microscope is a magnifying instrument that utilizes visible light to magnify and illuminate tiny specimens. The lens and the light sources are the two main components of a light microscope. Light microscopes come in two types, including simple and compound microscopes. Simple light microscopes are one of the earliest forms of microscopes, and they work by utilizing a single lens to magnify the sample. Compound microscopes, on the other hand, utilize two lenses that work together to magnify the sample.
To prepare a specimen for a light microscope, a number of steps must be taken, including fixation, sectioning, staining, and mounting.
A specimen must be mounted on a slide before it can be examined with a light microscope. A cover slip is then put on top of the slide to protect the specimen. This step cannot be skipped as it is a critical part of preparing the specimen for light microscopy.
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What did Chargaff discover while studying bases in the DNA of organisms?
The bases in the DNA of each organism were unique.
The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.
The overall percentages of bases were different from one organism to the next.
There were equal amounts of all four bases in every organism, or 25 percent of each base.
Answer:
The overall percentages of bases were different from one organism to the next.
Answer:
The correct answer is c!:)
Explanation:
Hope this helps!:)
Which of the following statements about current theories on global warming is true?
a. Scientists generally agree that global warming is taking place.
b. Some scientists think that we should accelerate global warming.
C. The scientific community disagrees about whether we should take action about global
warming
d. Cutting down trees and burning fossil fuels does not lead to global warming.
Please select the best answer from the choices provided
А A
B
С
Answer:
A. they pretty much all think there is global warming
Answer:
it is
a.
Scientists generally agree that global warming is taking place.
Explanation:
edge 2021
1) Write the characters of 'Penguin' with the help of classification chart.
Classification:- i) kingdom:
ii) Phylum:
iii) Class:
iv) Subkingdom:
Characters:-
Explanation:
hope help you stay happy
This shows cardiac muscle. This type of muscle is *
Answer:
Involuntary
Explanation:
Hope that helps ;)
Answer:
Involuntary
Explanation:
Cardiac muscle is also an involuntary muscle, found only in the heart. The cardiac muscle fibers all contract together, generating enough force to push blood throughout the body.
PLEASE HELP ITS DUE IN 3 HOURS!! 6. Match the correct definition to each vocabulary term:
Answer:
In order from top to bottom
C
A
E
D
B
Explanation:
1) Reflection is when a ray hits something reflective then bounces back. For example, light reflects off a mirror, which is why you can see yourself in a mirror.
2) Wavelength measures the size of a wave. It is measured from the crest or trough of one wave to the crest or trough of another.
3) Refraction occurs when waves go through different mediums at different speeds. This is why a straw looks bent when in water.
4) Frequency is a way of measuring the speed of a wave. It shows how many waves pass every unit of time.
5) Absorption means that all of the waves were absorbed into the medium and none of them passed through.
What is the greenhouse effect? How does it occur and why is it important? ps i didnt know what subject it was
Answer: The absorbed energy warms the atmosphere and the surface of the Earth. This process maintains the Earth's temperature at around 33 degrees Celsius warmer than it would otherwise be, allowing life on Earth to exist. Greenhouse gases keep our planet livable by holding onto some of Earth's heat energy so that it doesn't all escape into space. This heat trapping is known as the greenhouse effect. Just as too little greenhouse gas makes Earth too cold, too much greenhouse gas makes Earth too warm.
Explanation:
Hydraulic fracturing technology is used to produce nuclear power.
a. True
b. False
Answer:
False
Explanation:
What form of electromagnetic radiation do microwaves use?
Answer:
Microwave ovens work by using 2.45 GHz frequency electromagnetic waves know as microwaves to heat the water in food.
a microwave oven uses microwaves to heat food. Microwaves are a type of wave that are sandwiched between radio waves and infrared radiation on the electromagnetic spectrum.
Explanation:
- Eijiro <3
Which of the following nutritional components will the nurse encourage a patient to consume as it is needed for erythropoiesis?
a. Vitamin B1
b. Vitamin D
c. Zinc
d. Cobalamin
The following nutritional component will the nurse encourage a patient to consume as it is needed for erythropoiesis is Cobalamin or Vitamin B12.
What is erythropoiesis?
Erythropoiesis is the process by which red blood cells (erythrocytes) are formed. The body's bone marrow contains stem cells that can develop into red blood cells. The average lifespan of a red blood cell is approximately 120 days before it is broken down and eliminated by the body.
What is Cobalamin or Vitamin B12?
Cobalamin, also known as Vitamin B12, is a water-soluble vitamin that aids in the formation of red blood cells and DNA, as well as the proper functioning of the nervous system. Vitamin B12 is primarily found in animal products, including beef, pork, poultry, eggs, and milk, so vegetarians and vegans may have difficulty obtaining enough vitamin B12 from their diet.A deficiency in vitamin B12 can result in anemia, or a reduction in the number of red blood cells, which can lead to fatigue, weakness, and other symptoms. A patient with a vitamin B12 deficiency may need to take supplements or receive injections in order to replenish their body's stores of this essential nutrient. A nurse would advise the patient to consume cobalamin or vitamin B12 as the nutritional component for erythropoiesis as it is needed for the formation of red blood cells.
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This article was about a rare monkey, in Myanmar, called the Snub-Nosed Monkey, caught on camera for the first time. The video was shot from the ground and showed a large group of the Snub-Nosed Monkeys traveling through the trees above. The Snub-Nosed Monkey is known for its unique nose which lifts up making the monkey look like it has two apple seeds on its face as opposed to nostrils. Due to habitat destruction, and them living in small numbers it is difficult to study their habits and such. What is known is that whenever it rains they hide out and put their faces in between their knees. This is so the rain does not get in their noses since it may cause them to sneeze making them more vulnerable to predators. These Monkeys are also endangered this as well is due to habitat destruction caused by illegal lodgers.
This article is about the Snub-Nosed Monkey, a rare species found in Myanmar, that has been caught on camera for the first time. These monkeys are unique because of their noses which lift up, making them look like they have two apple seeds on their face instead of nostrils. It is difficult to study their habits and behaviors due to their habitat destruction and small population.These monkeys are also endangered due to habitat destruction caused by illegal lodgers.
The Snub-Nosed Monkeys are known to hide out and put their faces in between their knees whenever it rains. This is to prevent rain from entering their noses and causing them to sneeze, making them more vulnerable to predators. These monkeys are also endangered due to habitat destruction caused by illegal lodgers. Due to the habitat destruction caused by humans, their population is decreasing at an alarming rate and it is important to protect these rare species.The article is about the Snub-Nosed Monkey which is a rare species found in Myanmar. Due to habitat destruction and their small population, it is difficult to study their habits and behaviors. Whenever it rains, the monkeys hide out and put their faces in between their knees to prevent rain from entering their noses. These monkeys are also endangered due to habitat destruction caused by illegal lodgers.
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Polar bears live in extreme conditions. Describe some of the physical traits that
polar bears have to get what they need and avoid threats in their environment?
Answer:
Thick fur,soles on their paws, white fur.
Explanation:
They need the thick fur to help them with the cold weather.
soles on their paws help with slippery ice,white fur gives camouflage and they have no natural predators.
Why was the evolution of cyanobacteria such a significant event in Earth's history?
Answer:
Cyanobacteria are blue-green algae that produce chlorophyll and undergo photosynthesis. Oxygen, a byproduct of that photosynthesis, was released into the atmosphere, changing it in such a way that it may have allowed the evolution of more complex forms of life.
Explanation:
Right on ED2021 practice, goodluck! :) Happy holidays!
Blood brings to cells things like ____________________ and __________________.
Answer:
oxygen and nutrients................
Most carbon dioxide is carried from the body tissues to the lungs _____. Most carbon dioxide is carried from the body tissues to the lungs _____. as bicarbonate ions (HCO3 -) combined with hemoglobin by the trachea as hydrogen ions (H ) dissolved in blood plasma
Answer:
As bicarbonate ions
Explanation:
Answer:
it a
Explanation:
yw
Decomposers (like bacteria and fungi) are not included in this food web. Explain the role of decomposers in nature. Why are they so important?
I NEED HELP WITH THIS PLEASE!!!!
Answer:
please give me brainlist and follow
Explanation:
Thanks to decomposers, nutrients get added back to the soil or water, so the producers can use them to grow and reproduce. Most decomposers are microscopic organisms, including protozoa and bacteria. ... Instead, fungi get all their nutrients from dead materials that they break down with special enzymes.
Which of the following human impacts on natural habitats are TRUE? Check all that apply.
question 62 80) a reduction in the amount of nadp available in plant cells in the light will ultimately result in a) an increase in the rate of the calvin cycle. b) a decrease in the rate of linear electron flow. c) a decrease in the rate of cyclic electron flow. d) an increase in the rate of oxygen production.
A reduction in the amount of NADP available in plant cells in the light will ultimately result in a decrease in the rate of linear electron flow. This is because the linear electron flow depends on the availability of NADPH which is the reduced form of NADP (nicotinamide adenine dinucleotide phosphate) and ATP that are produced during photosynthesis so the correct answer is option (B).
NADPH plays a crucial role in the Calvin cycle by providing energy in the form of high-energy electrons that are used in carbon fixation. The electrons are transferred from NADPH to CO2 to form carbohydrates, and in the process, NADPH is oxidized to NADP. In the absence of NADPH, the Calvin cycle would not be able to proceed at a normal rate. ATP is also required by the Calvin cycle to provide the energy required to power the various enzymatic reactions that take place during carbon fixation.In the presence of light, photosynthesis occurs in two stages: the light-dependent reactions and the light-independent reactions.
The light-dependent reactions occur in the thylakoid membranes of chloroplasts and involve the conversion of light energy into chemical energy in the form of ATP and NADPH. Linear electron flow is the primary pathway that produces ATP and NADPH during photosynthesis. It involves the transfer of electrons from water to photosystem II, through the cytochrome b6f complex, and on to photosystem I before finally being transferred to NADP+. Cyclic electron flow also occurs in photosynthesis but produces only ATP. In cyclic electron flow, the electrons are recycled back to the cytochrome b6f complex instead of being transferred to NADP+.
Therefore, a reduction in the amount of NADP available in plant cells in the light will ultimately result in a decrease in the rate of linear electron flow.
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Is there some limit to the height of the flight of stairs used
and the horsepower developed? Explain.
Vacuoles are cellular organelles that are found in all plant and fungal cells. In plant cells, vacuoles tend to store large amounts of water, so they can push outward on cell walls and help keep plants upright. In fungal cells, vacuoles often store materials that are toxic to the cell.
According to the above information, how do vacuoles help fungal cells maintain homeostasis?
A.
by storing large quantities of water
B.
by allowing the cells to get rid of waste
C.
by producing more cellular organelles
D.
by helping the cells extract energy from food
Answer:
D. by helping the cells extract energy from food
Explanation:
Fungi are decomposers so they normally need some sort of food to grow. To get the energy to grow, they extract it from the food. Fungi will get their energy from dead animals, dead plants, etc.
Figure 11-1
In which part of the cell does this process shown in Figure 11-1 take place?
Answer:
The correct answer is - in the ribosomes.
Explanation:
The translation is the process that takes place in the ribosomes attached to the endoplasmic reticulum where they decode the codons present in the form of the mRNA to the amino acid chain with the help of tRNA.
Ribosomes are called the factory of the protein. It involves triplet code to translate into the amino acid sequences to produce polypeptide chains or protein.
Thus, the correct answer is - in the ribosomes.
What does the green circle part of the graph represent?
A. Primary succession
B. Secondary succession
C. Pioneer specialist
D. Natural disasters
Answer:
Natural disaster does the green circle mean
The increased availability of genetically modified food has
A)
made such products commonly acceptable.
B)
eliminated famine in developing nations.
C)
made food cheaper to grow in drought areas.
D)
created controversy in the field of bioethics.
Answer:
B.
Explanation:
This way poorer countries no longer spend so much for so little.
How can you call something "alive"? All living things share certain characteristics.
Part A: List the 9 characteristics of life. (1 point)
Part B: Choose 3 of the characteristics of life above. Give an example of each that describes how that characteristic contributes to the organism's survival. (3 points)
Explanation:
A - response to stimuli, reproduction, respiration (breathing), growth and development, regulation, homeostasis, energy processing, evolution,excretion.there's more but, I've only mentioned 9.
B -response to stimuli - by responding to stimuli the organism indicates the presence of nervous system and response to maintain survival.reproduction - by reproducing the organism is promoting the species' survival by maintaining it's presence for generations. respiration / breathing - this characteristic indicates gas exchange in an organism which, suggests metabolic reactions in the organism that provides it with necessary energy.hope this helps. :)
What option would be a good adaptation for an animal in a dense RAINFOREST? *
A. heavy body
B. ability to sprint
C. ability to blend with multiple colors and patterns
Answer:
c because they need to live instead of dying. bc from other bigger animals they can see it and eventually die so.
A gardener performs experiments on her tomato plants. When graphing her data, which factor is an independent variable?
the number of fruit per plant
the amount of light each plant receives
the height of each plant
the average circumference of each plant’s fruit
Answer:
The answer is "the amount of light each plant receives
At the time of graphing the data, the factor that should be considered as the independent variable should be the light amount that each plant received.
What is the plant?The plant should be treated as a living thing that should be grown in the earth and contains the stem, leaves, and roots.
At the time when the gardener performed the experiments on the tomato plants so here, the factor should be the light amount that each plant received.
Therefore, the second option is correct.
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Which of the following is NOT one of the Nervous System Functions?. Single choice.
(1 Point)
1.To detect changes and feel sensations
2. To initiate appropriate responses to changes
3. To organize information for immediate use and store it for future use
4. Absorb extra fluid between the cells
Answer:
4. Absorb extra fluid between the cells
Explanation:
The nervous system (SN) is a complex system that acts to receive sensory information through nerves, transmit this information via the spinal cord and finally process it in the brain. The SN has three main roles: sensory input, processing and motor output. The SN can be divided into the central nervous system (composed of the brain and spinal cord), and the peripheral nervous system (composed of those nerves located outside the brain and spinal cord). Moreover, the extracellular fluid between the cells comprises four types of fluids: 1-intravascular fluid (blood), 2-interstitial fluid, 3--transcellular fluid and 4-cerebrospinal fluid. The excess of these fluids is absorbed by the capillaries of the lymphatic system.
Which choice is involved in both sexual and asexual reproduction?
Answer:
seeds
Explanation:
Answer:
seeds
Explanation:
I took the test right now k12
In gout, both serum and synovial fluid will have increased levels of:
In gout, both serum and synovial fluid will have increased levels of uric acid.
Gout is a type of arthritis characterized by the accumulation of urate crystals in joints, which leads to inflammation and severe pain. Uric acid is a natural byproduct of purine metabolism in the body.
Normally, uric acid is dissolved in the blood and excreted through the kidneys. However, in individuals with gout, there is either an overproduction of uric acid or a decreased ability to excrete it, resulting in elevated levels in the bloodstream.
The excess uric acid can precipitate and form crystals in the synovial fluid, which is the lubricating fluid found in joints. These crystals trigger an inflammatory response, causing pain, swelling, and redness characteristic of gout attacks.
The deposition of urate crystals in the synovial fluid can be confirmed by analyzing the fluid obtained through joint aspiration.
Furthermore, since uric acid is elevated in the bloodstream, it is also reflected in the serum levels. Blood tests can measure the serum uric acid levels to aid in the diagnosis of gout.
Therefore, in gout, both serum and synovial fluid will have increased levels of uric acid, reflecting the underlying metabolic imbalance in purine metabolism.
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Introduction: In 1915, a German scientist named Alfred Wegener proposed the theory of continental drift. According to this theory, the landmasses once were joined into a supercontinent called Pangaea. The landmasses then slowly drifted to their current positions.
Question: What did Pangaea look like?
If South America were close to Africa. If you look at their coastlines, what do you notice?
Answer:
Pangaea, which looked like a C, with the new Tethys Ocean inside the C, had rifted by the Middle Jurassic, and its deformation is explained below.
Explanation:
An ocean food chain is shown in the diagram above. Which organism represents the trophic level containing approximately 1% of the initial amount of solar energy acquired by the phytoplankton?
I believe the answer is copepods
Sand eels represent the trophic level containing approximately 1% of the initial amount of solar energy acquired by phytoplankton.
What is the food chain?The food chain is an ecological diagram used to represent the connections between different trophic levels.
In the food chain, energy flows from producers to primary consumers and so on.It has been shown that approximately 90% of energy is lost in the form of heat for each trophic level.In conclusion, sand eels represent the trophic level containing approximately 1% of the initial amount of solar energy acquired by phytoplankton.
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