How do stains used for light microscopy compare with those used for electron microscopy?
Answers
Answer:
stains for LM are colored molecules that bind to cell componetns affecting the light passing through. Stains used for EM involve heavy metals that affect the beams of electrons passing through.
Explanation:
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Answer:
In light microscopy, the cell components are stained using colorful dyes or stains affected by the light passing through them, and the specimens are clearly visible. However, in electron microscopy, the stains are heavy metals scattered on the biological samples affected by the beam of electrons.
Explanation:
Related Questions
list two reasons why the rain forest in south america and near the equator be so productive?
Answers
High rainfall and temperature
Generally, most plants need water to survive. Hence, these two regions experience high rainfall, and so are highly productive. The high temperature allows for dead organisms to decay at a faster rate, thus returning nutrients back to the soil for the plants in the rainforest to absorb and grow. To summarize it, high temperatures allow for nutrients to return to the soil as well as photosynthesis, and the rainwater assists photosynthesis. All these contribute to the productivity of forests in these two regions.
What is a radical? in biology
Answers
Answer:
Radical is an atom or a group of atoms of different elements that act as a single unit during chemical reaction.
Explanation:
For example: Hydrogen, Nitrogen,Nitride,Nitrate,Ammonium, etc.
Can someone help me answer this question?
Answers
Answer: C. Hypertonic Solution
Explanation:
Hypertonic is when water leaves the cell.
primary insomnia is most often tied to: group of answer choices stress substance abuse gerd genetic factors
Answers
primary insomnia is most often tied to genetic factors, although other factors such as stress, substance abuse, GERD, and environmental factors can also contribute to sleep difficulties.
Primary insomnia refers to sleep problems that do not result from any other cause and are not linked with any other medical condition. According to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), primary insomnia is described as sleep difficulty that lasts for a month or longer and is not related to other medical, psychiatric, or environmental factors.
The causes of primary insomnia are still unknown. However, certain risk factors have been found to contribute to the development of primary insomnia. They are:
Genetic factors
Hyperarousal
Stress
Sedentary lifestyle
Changes in circadian rhythmInappropriate sleep habits, such as sleeping in too late or going to bed too late
Psychological conditions like anxiety and depressionSubstance abuse or withdrawal
GERD (gastroesophageal reflux disease)
The symptoms of primary insomnia include difficulty in sleeping, waking up too early, or difficulty in staying asleep. The person affected by primary insomnia may also experience fatigue, irritability, difficulty concentrating, and decreased performance at work or school.
Treatment for primary insomnia may include cognitive-behavioral therapy, relaxation techniques, stimulus control, and sleep restriction therapy. Doctors may also prescribe sleep medication in cases of severe insomnia.
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Who is Ross Carr? Who is Ross Carr?
Answers
What organisms produce most of the sugar on the planet? what is the chemical formula for glucose?
Answers
The organisms that produce most of the sugar on the planet are plants. Through the process of photosynthesis, plants use sunlight, carbon dioxide, and water to produce glucose, which is a form of sugar and serves as an essential energy source for many organisms.
The chemical formula for glucose is C₆H₁₂O₆. It represents the composition of glucose, indicating that it consists of six carbon (C) atoms, twelve hydrogen (H) atoms, and six oxygen (O) atoms.
Glucose is a simple sugar or monosaccharide and is an important energy molecule in living organisms. It is commonly found in fruits, vegetables, and other plant-based foods. Glucose is also a primary source of energy for cells, as it can be broken down during cellular respiration to produce ATP (adenosine triphosphate), the main energy currency of cells.
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oxygen enters the blood through which part of the heart?
Answers
Answer:
Oxygen enters the blood through the lungs, not directly through any part of the heart. The heart pumps deoxygenated blood to the lungs via the pulmonary artery, where the blood is oxygenated and carbon dioxide is removed through the process of respiration. The oxygenated blood then returns to the heart via the pulmonary veins and is pumped out to the rest of the body through the aorta.
Pyruvate dehydrogenase is _______________ when atp–adp ratios are high.
Answers
Pyruvate dehydrogenase is inhibited when ATP-ADP ratios are high.
Pyruvate dehydrogenase is an enzyme complex that plays a crucial role in cellular respiration by converting pyruvate, the end product of glycolysis, into acetyl-CoA, which enters the citric acid cycle. The activity of pyruvate dehydrogenase is regulated by several factors, including the ATP-ADP ratio.When ATP levels are high and ADP levels are low, it indicates that the cell has sufficient energy reserves. In this energy-rich state, the high ATP-ADP ratio acts as an inhibitory signal for pyruvate dehydrogenase. The inhibition helps to regulate the rate of glucose metabolism and prevents the unnecessary breakdown of glucose when the energy needs of the cell are already met. The inhibition of pyruvate dehydrogenase in response to high ATP-ADP ratios ensures efficient energy utilization and helps maintain energy homeostasis within the cell.
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Acute cholangitis is a bacterial infection superimposed on an obstruction of the biliary tree most commonly from a gallstone, but it may be associated with neoplasm or stricture. The classic triad of findings is right upper quadrant (RUQ) pain, fever, and jaundice.
Answers
Acute cholangitis refers to a bacterial infection that occurs when the biliary tree, which consists of the bile ducts, becomes obstructed.
The primary cause of acute cholangitis is typically a gallstone, although it can also be associated with other factors such as neoplasms (abnormal tissue growth) or strictures (narrowing of the ducts). The classic triad of findings seen in acute cholangitis includes three main symptoms.
There is right upper quadrant (RUQ) pain, which is localized to the upper right side of the abdomen and is often sharp or cramp-like in nature. Patients experience fever, indicating an inflammatory response and infection. Jaundice occurs due to the obstruction of bile flow, resulting in a buildup of bilirubin, a yellow pigment, in the bloodstream. This leads to yellowing of the skin and eyes.
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—-- The complete question is:
Acute cholangitis is a bacterial infection superimposed on an obstruction of the biliary tree most commonly from a gallstone, but it may be associated with neoplasm or stricture. The classic triad of findings is right upper quadrant (RUQ) pain, fever, and jaundice. Explain. —--
Suzanne has type A– blood. Which blood type could she receive in a blood transfusion?
A+
O–
O+
B–
Answers
Answer:
O-
Explanation:
Someone with A- type blood can receive A- and O- type blood
Suzanne can receive blood from a donor with blood type A- or O-. Suzanne cannot receive blood from donors with blood types A+, B-, or O+ because these blood types have either A or B antigens on the surface of their red blood cells that could cause a transfusion reaction in Suzanne, or because their plasma contains antibodies that could react with Suzanne's red blood cells.
What is a Blood type A individual have?Blood type A individuals have A antigens on the surface of their red blood cells and antibodies against B antigens in their plasma. Blood type O individuals do not have A or B antigens on the surface of their red blood cells and have antibodies against both A and B antigens in their plasma.
Blood type A- individuals have Rh factor negative blood, meaning they do not have the Rh factor antigen on their red blood cells.
Therefore, Suzanne can receive blood from a donor with blood type A- because their red blood cells have the same A antigens as hers, and their plasma does not contain B antibodies that could react with her red blood cells.
She can also receive blood from a donor with blood type O- because their red blood cells do not have A or B antigens that could cause a transfusion reaction, and their plasma does not contain A or B antibodies that could react with Suzanne's red blood cells.
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An ant and a stone are on a circular disc, which is rotating at a constant speed. The stone is fixed to the disc. The ant is moving along the rim in the opposite direction and at the same speed as that of the disc. Which of these shows the position of the ant and the stone after the disc completes 3/4th of a revolution?
Answers
Find attached the options
Answer:
The option B in the attached is correct
Explanation:
In the given scenario the ant and stone are on the same disc and the stone is fixed.
The disc is moving at a constant speed in a clockwise direction while the ant is moving in the opposite direction.
The starting position is also attached with the ant opposite the stone.
So for a full rotation the ant would have gone round and met up with the stone.
If the disc completes a 3/4th revolution it will be at the position in B. The ant would have gotten to the stone by half revolution, and by 3/4th revolution it would have gone a quarter of the disc from the stone as shown
which is not characteristic of mammals
(A) hair covering
(B) 3 chambered heart
(C) produce milk
(D) produce sweat
Answers
Answer:(C) produce milk
Explanation:
Answer:
I guess it is (B) 3 chambered heart
which molecules does a plant need to make glucose in the process of photosynthesis?choose all correct answers.
Answers
Answer:
water and carbon dioxide into glucose ....
Explanation:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil.
1.photosynthesis
2.chlorophyll
3.sun light
4.carbon dioxide
Plants need several molecules to make glucose during the process of photosynthesis. The correct answers include:
Carbon dioxide (CO2): Plants take in carbon dioxide from the air through small openings called stomata on their leaves.
Water (H2O): Plants absorb water from the soil through their roots and transport it to their leaves.
Sunlight: The energy from sunlight is captured by chlorophyll, a pigment found in the chloroplasts of plant cells, and is used to power the photosynthesis process.
Chlorophyll: Chlorophyll is a green pigment found in the chloroplasts of plant cells that absorbs light energy and converts it into chemical energy, which is used to make glucose.
Therefore, the correct answer is (1) Carbon dioxide, (2) Water, (3) Sunlight, and (4) Chlorophyl
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A group of muscle cells stimulated by a single motor neuron is known as a.
Answers
Answer:
motor unit
The impulses that initiate muscle contraction originates in the. brain or spinal cord. A group of muscle cells stimulated by a single motor neuron is known as a. motor unit
A single motor neuron, however, can innervate many muscle fibers. The combination of an individual motor neuron and all of the muscle fibers that it innervates is called a motor unit. The number of fibers innervated by a motor unit is called its innervation ratio.
Which of the following is incorrect? a. The Separate Dimension provides the most efficient solution for a Snowflake Schema. b. The Linked Dimension model is basically keeping the hierarchy, which is linking multiple dimensions in a hierarchical relationship, as well as connecting each of these dimensions directly to the fact, like the Separate Dimension models. c. The Combined Dimension model combines the two dimensions in the Separate Dimension model into one dimension. d. The Hierarchy model maintains the two dimensions, but forms a hierarchy. Every dimension in the star schema must be used in querying fact measures from the data warehouse. Select one: True False
Answers
The incorrect statement is the Combined Dimension model combines the two dimensions in the Separate Dimension model into one dimension, option (c) is correct.
In fact, the Combined Dimension model combines related attributes from multiple dimensions into a single dimension while preserving the hierarchies within each individual dimension. This approach aims to reduce the complexity and redundancy of separate dimensions by consolidating related attributes into a single dimension. The Separate Dimension model, on the other hand, maintains separate dimensions for each attribute and links them directly to the fact table.
The Linked Dimension model also preserves the hierarchy by linking multiple dimensions in a hierarchical relationship, similar to the Separate Dimension model. The Hierarchy model, as mentioned in option d, maintains two separate dimensions but forms a hierarchy between them, option (c) is correct.
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The correct question is:
Which of the following is incorrect?
a. The Separate Dimension provides the most efficient solution for a Snowflake Schema
b. The Linked Dimension model is basically keeping the hierarchy, which is linking multiple dimensions in a hierarchical relationship, as well as connecting each of these dimensions directly to the fact, like the Separate Dimension models
c. The Combined Dimension model combines the two dimensions in the Separate Dimension model into one dimension
d. The Hierarchy model maintains the two dimensions but forms a hierarchy.
The Rio Grande Valley is located at the southern tip of Texas at the end of a long
river known as the Rio Grande.
Location of the Rio Grande Valley
Rio Grande
Gulf of
Mexico
Rio Grande
Valley
How did the delta at the end of the Rio Grande form?
Answers
Answer: Sand and mud from the Gulf of Mexico were washed ashore by tsunamis.
There are 3 origins for the triceps brachii, but only one insertion. Where is the insertion?
Scapula
Humerus
Ulna
None of the above
Answers
Answer:
The insertion of the triceps brachii muscle is the ulna.
Explanation:
The triceps brachii muscle is a large muscle located at the back of the upper arm. It is responsible for extending the elbow joint and involves various movements, including pushing and pulling. The muscle has three heads or origins: the long head, lateral head, and medial head, but all three of these heads converge into a single tendon, which attaches to the ulna bone in the forearm. Therefore, the insertion of the triceps brachii muscle is the ulna.
Mutations are most often
a) beneficial
b) harmful.
c) neutral.
d) deadly .
Answers
Explanation:
Mutations MAY have negative affects, usually and unfairly categorized as “bad” or “deadly” but sometimes mutations can control genes and have major positive affects.
Answer:
the answer is C
Explanation:
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Plants will grow best with ____ light.
Plants will not grow well with ____ light.
[red, violet, blue, green, orange]
Answers
Answer:
red and blue, green
Explanation:
i can make my own food sometimes i also eat food i can have one or two parents my cells have an organized.nucleus i am usually madenof only one cell but sometiems i am made of many cells.what domain and kingdom am.i
Answers
Answer:
Fungi
My cells have an organized nucleus. I am usually made of many cells, but sometimes I can be single celled. I cannot make my own food, so I must eat. I can have one or two parents.
Protista
I can make my own food, but sometimes I also eat food. I can have one or two parents. My cells have an organized nucleus. I am usually made of only one cell, but sometimes I am made of many cells.
Archaebacteria
I am only made of one cell. My cell does not have an organized nucleus. I only have one parent. Sometimes I make my own food, but other times I eat food. I like to live in volcano vents, salt water of deep oceans, or the freezing cold arctic.
Eubacteria
I can make my own food, but sometimes I eat food. I am single celled, and I only have one parent. My cell does not have an organized nucleus. Sometimes I cause diseases. Other times I am a decomposer.
Explanation:
Hope this helps.
please help i’ll give brainliest
Answers
Answer:
Primary consumers
Explanation:
Unless the organism actually invades, attacks, or otherwise causes the death of another trophic level source, it cannot really be considered to consume that form. It is consuming something different than the original creature. See the following diagram.
Which of the following is NOT molecular evidence that supports the theory that all life evolved from a single common ancestor?A. All life has a universal genetic code that works the same way in every organism on Earth.B. ATP is a universal energy storage molecule for all organisms.C. All proteins in every organism are formed from the same 20 amino acids.D. All organisms have Pentalipid membranes surrounding them.
Answers
The correct answer is D. All organisms have Pentalipid membranes surrounding them. Most organisms have a bilipid layer, although several microbes have different characteristics in its cell membrane.
What adaptation do seeds dispersed through ballistochory have?
a)
sail-like structure
b)
smooth and aerodynamic
c)
hollow on the inside
d)
pleasant smell and taste
Answers
Answer:
smooth and aerodynamic
Explanation:
Seeds are usually smooth, like a baseball, so that they cut smoothly through the air and don't have a lot of wind resistance.
The adaptation that seeds dispersed through ballistochory has smooth and aerodynamic. The correct option is b.
What are adaptations?Adaptation is a biological process that is done by many plants and animals to survive in given conditions. Adaptation is causing the partial or full change in their body or functions to match with the environmental conditions.
Plants with ballistochory means possibly ejects by the seeds full stop this adaptation or evolution happened in which seats are dispersed into many tentacles and seats are dispersed into soils for pollination this comes under wind dispersion.
Seeds launch an angle and release the elastic energy store in the fruit. These adaptations are smooth.
Therefore, the correct option is b. smooth and aerodynamic
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I need help with this practice In your own words, give a general description of the species: Blue Jay Please,(If you use any words that are not your own, please reword it to your own words) as I would like you to explain it
Answers
The Cyanocytta crystal commonly known as a Blue jay is native of eastern North America, it lives in deciduous and coniferous forests, though can be found in certain urban areas. It feeds mostly on seeds, sometimes even stockpile generating seed banks, or on rare occasions can feed on small invertebrates and vertebrates si can be considered as mainly a primary consumer.
approximately how much iron is lost daily by adults from urine, sweat, and shed skin?
Answers
On average, adults lose around 1-2 mg of iron daily from urine, sweat, and shed skin. This may seem like a small amount, but it can add up over time, especially if an individual is not consuming enough iron-rich foods or if they have a medical condition that causes excessive iron loss.
Iron is an important mineral that is needed for the production of hemoglobin, which carries oxygen throughout the body. When the body loses iron, it can lead to iron deficiency anemia, which can cause fatigue, weakness, and other health problems.
Therefore, it is important to ensure that the body is getting enough iron through a balanced diet or supplementation, especially for those who are at higher risk for iron deficiency, such as menstruating women, pregnant women, and vegetarians/vegans.
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Match each muscle unit with the connective tissue layer that surrounds it.
Muscle Units: (muscle, fascicle, muscle cell)
Connective Tissue Layer: (perimysium, endomysium, epimysium)
Answers
Muscle - Epimysium
Fascicle - Perimysium
Muscle cell - Endomysium
The perimysium, which surrounds bundles of muscle fibres, the endomysium, which surrounds individual muscle fibres, and the epimysium, which surrounds the muscle, are the three scale levels at which connective tissue of the muscle can be identified.
Endomyceum is the name for the elastic, fibrous tissue that covers each muscle fibre. Connective tissue called perimysium surrounds bundles of muscle fibres. Epimysium is the name for the connective tissue that surrounds the entire muscle.
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Compare the number and variety of organisms
Answers
When we go from a species to a kingdom, there are more and more different kinds of life.
A group of distinct organisms with shared essential characteristics is referred to as a species. They typically contain creatures that are morphologically similar and closely related.
A Genus is a collection of related species that is a part of a Family of related genera.
Higher taxonomy categories are based on a broader range of commonalities. An Order is formed by families that are quite similar. Classes consist of related orders.
Different species within a Phylum only share one or two characteristics in common. For instance, the presence of a notochord places classes Mammalia, Pices, and Amphibia all within the phylum Chordata.
The Kingdom, which is the classification of several categories, is the last step.
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Organisms with the most beneficial traits will survive. This is commonly known as:.
Answers
Answer:
Natural selection
Explanation:
The top question please answer due soon thanks
Answers
Answer:
The activation energy of the reaction
Explanation:
Peer reviews are important to the scientific process because
A) they allow anyone to submit research to scientific journals.
B) they tend to move quickly and with little conflict.
C) they verify the conclusions that were made from the data collected.
Answers
Answer:
C) they verify the conclusions that were made from the data collected.
Explanation:
E2020 says it's correct
Peer reviews are important to the scientific process because they verify the conclusions that were made from the data collected. The correct answer is option C.
Peer review is a process in which experts in a given field review research studies before they are published in scientific journals.
Peer reviews are important to the scientific process because they help to ensure that research studies are accurate, reliable, and of high quality. Peer reviewers evaluate the study's methodology, data analysis, and conclusions, and provide feedback to the authors. This helps to ensure that the study is scientifically sound, and that the conclusions drawn from the data are valid.
Therefore, Peer review is an important part of the scientific process because it helps to ensure that scientific research is trustworthy and of high quality. Option C is the correct answer.
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