What is an advantage of electron microscopes compared to light microscopes?
They have a much higher power of resolution.
They can be used to view live specimens.
They are inexpensive and commonly found in classrooms.
They are helpful during dissections.

Answers

Answer 1

Answer:

They have much higher power of resolution.as compared to light microscope.


Related Questions

If Darwin knew of Mendel's work, how might it have influenced his theory of evolution? Do you think this would have affected how well Darwin's work was accepted?

Answers

Answer:

See explanation

Explanation:

According to Darwin, the determinant of the ability of species to thrive in their environment is their ability to develop favourable characteristics which enable them to survive in their environment. This ability to develop favourable characteristics is called natural selection.

These favourable characteristics are passed on from parents to offsprings and are responsible for the perpetuation of organisms having these favourable characteristics in comparison to other members of the same species.

In relation to Mendel's theory, these favourable characteristics could be regarded as Mendel's factors (currently identified as genes). These factors are units of inheritance passed on from parents to offsprings.

If Darwin had an idea of Mendel's work when he propounded his evolution theory, he could have modified his idea of favourable characteristics to imply genes. This would have made his idea more empirical than speculative and led to a faster world wide acceptance of his ideas.

what are the cells that pass from parents to their children

Answers

Answer:

Genes are the blueprint for our bodies. If a gene contains a change, it disrupts the gene message. Changes in genes can cause a wide range of conditions. Sometimes a changed gene is inherited, which means it is passed on from parent to child. Changes in genes can also occur spontaneously.

Determine which of the following statements is true about energy in ecosystems. A. Producers are able to convert 40% of the sun’s energy into chemical energy. B. 30% of the sun’s energy cannot be absorbed by producers because it is in the wrong wavelength of light. C. Producers only absorb 40% of the sun’s energy, most of which is lost during photosynthesis. D. Producers absorb 5% of the sun’s energy, and reflect 5% of the sun’s energy.

Answers

Answer:

A. Producers are able to convert 40% of the sun’s energy into chemical energy.

Explanation:

Energy in an ecosystem must be transferred in the ecosystem. The primary source of energy in an ecosystem is the sun. The terrestrial ecosystem mostly consists of plants and marine ecosystems. As energy flow in an ecosystem is unidirectional. It passed from the organism from one tropic level to another. Only 10% of the energy is available to them.

Answer:

Its C

Explanation:

Which type of neurons are responsible for carrying signals from the sensory neurons to the motor neurons?
A. Relay neurons
B. Sensory neurons
C. Transmission neurons
D. Motor neurons

Answers

Answer:

A. Relay neurons

Explanation:

Neurons or nerve cells are one of the cell types contained in the nervous system. Neurons transmit or carry nerve signals. There are three major types of neurons namely; motor neurons, sensory neurons, and interneurons.

Specifically, interneurons or relay neurons are types of neurons that connects the sensory and motor neurons i.e carrying signals from the sensory neurons to the motor neurons?

Cell specialization is important during the growth and development of
a multicellular organism. This process is most directly regulated by

Answers

Answer:

Protein

Explanation:

A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms.

Cell specialization is also referred to as cell differentiation and it can be defined as a biological process through which generic cells transform into specific cell types, so as to enable them perform certain functions within the body of a living organism.

Simply stated, it's the special function or job in the body of a living organism that are associated with cells.

Generally, cell specialization plays a significant role in the development of embryos.

Some living organisms are unicellular while others are multicellular in nature.

A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

Cell specialization is fundamental and key for the growth and development of a multicellular organism.

Furthermore, cell specialization as a process is most directly regulated by protein; one super regulating protein encourages cell differentiation while the other tries to stop or prevent the process. These proteins are referred to as master regulating proteins or Helix-Loop-Helix proteins.

When Dr. Philip tierno conducted his experiment on the pillows , he wanted to know the connection between pillows and the allergy-causing germs. He was trying to answer the question, Do these pillows contain germs that contribute to the family allergies?

Answers

Answer:

Yes. That was the question he was trying to answer.

Explanation:

To conduct the experiment investigating the connection between pillows and disease-causing gems, Dr. Philip needs to ask himself whether the pillows that will be used in the research contain germs that contribute to allergies in a family. This question allows Dr. Philip to have the basis to start his research and come to a conclusion about the pillows used in the research. Furthermore, the research points directly to the main point of the story.

Answer:When Dr. Philip Tierno conducted his experiment on the pillows, he wanted to know the connection between pillows and the allergy-causing germs. He was trying to answer the question, Do these pillows contain germs that contribute to the family’s allergies?

Explanation:Edmentum

What does a vaccine contain?
1.T cells
2.infectious particles
3.antigens
4.antibodies

Answers

4. Antibodies it’s what it contains I’m pretty sure

Answer:

Antigens

Explanation:

Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body

Which relates the wavelength and frequency of a wave?

The frequency is the number of wavelengths that pass a fixed point in a second.

A wavelength is the distance on a wave between one frequency and the next.

The time it takes for one wavelength to pass a fixed point is the frequency.

The speed at which a wavelength travels is the frequency of the wave.

Answers

Answer:

The correct answer is - The frequency is the number of wavelengths that pass a fixed point in a second.

Explanation:

The wavelength of a wave is the distance between one point on a wave and the nearest point or one crest to another crest of a wave.  The frequency of the wave is the number of wavelengths that pass a fixed point in a second.  A period is the amount of time one wavelength requires to pass a point.

Frequency = 1/wavelength, which means if one increases other decreases.

Thus, the correct answer is - The frequency is the number of wavelengths that pass a fixed point in a second.

Answer: A

Explanation:

Fruit trees in a forest are an important habitat for a bird species and were historically a major source of food for a rodent species. Over time, the rodent species shifted their feeding behavior from fruit trees to nut trees. As rodent behavior changed, the density of fruit trees decreased, which caused significant decreases to the bird population. What kind of effect did the change in rodents exert on bird population size?

Answers

Answer:

The bird population might have to migrate in search for food or may decline in numbers.

Explanation:

This is a concept of primary producers that is trees and secondary consumers that is mouse and bids. Due to the decline in raw material available the mouse population declines and this also affects the secondary consumers that are birds of prey like hawks, owls etc.

"Red rust is one of the destructive diseases in tea plants which results adverse effect on tea yield. It is caused by a type of algae." Which discipline of Biology is related to explain the above statement? a. Mycology b. Agronomy c. Pathology d. Phycology

Answers

Answer:

C

Explanation:

The correct answer would be plant pathology.

The branch of biology that is generally concerned with the study of diseases is referred to as pathology. When such a study has to do with plants, it is known as plant pathology.

Mycology is the branch of biology that has to do with the study of fungi, phycology deals with the study of algae, while agronomy deals with the study of economically important crops.

Hence, the correct option is C.

In what ways is a eukaryotic cell similar to a city?

Answers

Answer:  In many ways, the eukaryotic cell is kind of like a city. I will tell you what each of the organelles in a cell does. Your job will be to try to match each of the cell parts to the parts of a city and explain why they are similar. a) Golgi Apparatus: packages up proteins and labels them for distribution to other parts of the cell.

Each one, like the organs inside your body, fulfills a particular function that is required for the cell to stay alive. Consider the cells to be a miniature city. Because they all do similar jobs, the organelles could represent companies, places, or parts of the city.

What is a cell?

Cells are the fundamental building blocks of all life. Gazillions of cells make up the human body.

They support the body's structure, absorb nutrients from food, convert those nutrients into energy, and perform specialized functions.

Each one, like the organs in your body, performs a specific function that is required for the cell to survive. Think of the cells as a miniature city.

Because cell city has jobs that a plant cell does not, it represents an animal cell. In cell city, we believe that a waste disposal plant performs the same function as lysosomes, an organelle found only in animal cells.

Thus, this way, a eukaryotic cell similar to a city.

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In terms of base nucleotides, explain the only difference between the DNA message for normal hemoglobin and the DNA message for sickle-cell hemoglobin.

Answers

Answer:

In the 1950s, Vernon Ingram demonstrated that the only structural difference between normal adult hemoglobin and sickle-cell hemoglobin is the replacement of glutamic acid with valine in the β-globin amino acid chain (Ingram, 1957; 1959).

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Many plant pathologists believe that plant resistance is based upon the interplay of different signaling molecules? Justified.

Answers

Answer:

Yes.

Explanation:

Many plant pathologists believe that plant resistance is based upon the interplay of different signaling molecules because plants have various signaling molecules that plays a great role in their growth and development. Ethylene, auxin, cytokinins, gibberellins, and abscisic acid are the growth regulators that controls the growth of plants in different conditions i.e. in resistance. These signals leads the plant to take measures in difficult situations experience by the plants so in this way the plant is resistance to the harsh environmental condition.

Which of the following molecules contains three phosphate groups?
A. AMP
B. ADP
C. APP
D. ATP

Answers

Answer:

D) ATP contains three phosphate groups.

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Jaleel and Lisa are simplifying the expression 2 (x minus 2) + 2 as shown. Jaleel's Method 2 (x minus 2) + 2 = 2 x minus 4 + 2 = 2 x minus 2 Lisa's Method 2 (x minus 2) + 2 = 2 x minus 2 + 2 = 2 x

Answers

Answer:

Jaleel is correct

Explanation:

Given

[tex]2(x - 2) + 2[/tex]

Jaleel

[tex]2(x - 2) + 2 = 2x - 4 + 2 = 2x - 2[/tex]

Lisa

[tex]2(x - 2) + 2 = 2x - 2 + 2 = 2x[/tex]

Required

Who is correct

Analyzing the solutions

For, Jaleel; we have:

[tex]2(x - 2) + 2 = 2x - 4 +2[/tex] --- this is correct

[tex]2(x - 2) + 2 = 2x - 2[/tex] --- this is correct

For Lisa, we have:

[tex]2(x - 2) + 2 = 2x - 2+2[/tex] --- this is incorrect because:

[tex]2(x - 2) + 2 \ne 2x - 2+2[/tex]

Hence, Jaleel is correct

Answer:

d

Explanation:

Which statement best describes the relationship between a dependent variable and an independent variable in a scientific
Investigation

Answers

Answer:

A dependent variable is a variable affected by the change. The independent variable is the variable that is changed.

Explanation:

IN YOUR OWN WORDS, what is the definition for color blindness (include what is special about how this is inherited)

Answers

Answer:

Color blindness is the inabiliy to see certain colors of the color spectrum. This disease is hereditary and passed down from your parents.

Explanation:

Answer:

Explanation:

Yes

When observing a plant cell under a microscope, what parts do you think would be big enough to see?

Answers

Answer:

Explanation:

There are a few key structural differences between plant cells and animal cells.

Below are a few of the main ones:

Plant cells are generally larger than animal cells.

Only animal cells have lysosomes (however, recent, and controversial, research suggests that some plant cells may have lysosomes), and only plant cells have chloroplasts.

While plants cells have a rigid cell wall, animal cells have a thin and flexible plasma membrane.

Plants cells have a large central vacuole and animal cells have many small vacuoles

When observing a plant cell under a microscope, one can see large interlocking rectangular blocks. Around each cell, the cell wall is clearly visible. When stained, the cell wall is somewhat thick and visible. The cytoplasm is also lightly stained, with a darkly stained nucleus at the cell's periphery.

What is a plant cell?

A plant cell is a eukaryotic cell with something like a true nucleus and organelles that perform specific functions. However, some organelles found in plant cells differ from those found in other eukaryotic cells.

At the time of observing a plant cell under a microscope, person can see large rectangular blocks as well as cell wall is clearly visible.

When stained, the cell wall is thick and visible. The cytoplasm will also be lightly stained, with stained nucleus at the cell's periphery.

Thus, these structures can be visible under a microscope.

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What factor is described as sexual
selection?
A, non-random mating
B. migration
C. small populations
D. natural selection

Answers

Answer:

The correct answer is - D. natural selection.

Explanation:

Sexual selection takes place due to competition between individuals of the intraspecies same-sex and of mate choice which driving the evolution of reproductive traits.

Sexual selection is a mode of natural selection as it leads to the evolution of specific traits. Other examples or options are not related to sexual selection directly and are not affected by sexual selection.

An amino acid analyzer is an instrument used to determine a. the sequence of amino acids in a polypeptide chain b. the presence of modified amino acids in a protein c. the identity of N-terminal and C-terminal amino acids in a protein d. the identities and relative amounts of amino acids in a protein

Answers

Answer:

d. the identities and relative amounts of amino acids in a protein

Explanation:

An amino acid analyzer is an automated machine that is used to determine the identities and quantities of amino acids in a given protein, peptide, and cellular samples. It makes use of the ion-exchange chromatography principle to determine the presence of amino acids. When the chromatogram is obtained, the relative amounts are then determined by the analyzer.

Since proteins are made of sequences of amino acids, the identities of proteins can also be obtained through this method. Ninhydrin, in the chromatographic column, reacts with the present amino acids under an ultra violet detector and is then observed at a wavelength of about 440 - 570nm.

which example best shows that the chemisty of water is helpful to plants​

Answers

yea same the answer above is correct

What are sporophytes and gametophytes?

Answers

Answer:

A. Two different forms a plant can have

Explanation:

Higher plants, lower plants (mosses) and ferns undergo a life cycle called ALTERNATION OF GENERATIONS. In this life cycle, they switch between a haplontic and diplontic forms of life.

The haplontic (haploid) life form which produces haploid (n) gametes is called GAMETOPHYTE while the diplontic (diploid) life form which produces the spores that germinates is called SPOROPHYTE. Hence, sporophyte and gametophyte are two different forms a plant can have.

what happens to the space inside the bell jar when the stretchy rubber is pulled down?

Answers

Answer:

The cavity inside the bell jar is airtight. As the diaphragm is pulled down, the volume of the cavity increases

Answer:

The cavity inside the bell jar is airtight. As the diaphragm is pulled down, the volume of the cavity increases.

This causes an increase in pressure within the bell jar, the air rushes out of the balloons causing them to deflate.

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What does it mean to analyze data?

Answers

Data exploration
Biological analysis approaches produce comprehensive, high-level summaries of the biology most significantly affected in an experiment. These can include molecular networks, disease processes and biological pathways.


I think this the answer

Answer:

The process of examining, cleaning, converting, and modeling data with the purpose of uncovering relevant information, informing conclusions, and assisting decision-making is known as data analysis.

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Which of the following correctly describes a way in which Earth’s atmosphere interacts with the geosphere?

Answers

Answer:

It provides a medium for cycles that provide nutrients to living organisms.

Nitrogen is the most common element in the air. Why do bacteria play a role in the nitrogen cycle?

Answers

Explanation:

Bacteria play a role in the nitrogen cycle because:

The bacteria’s helps in breaking down the organic materials which has nitrogen in it, and helps in giving the nitrogen back to the cycle. Bacteria helps in breaking down of the leaves and then it diffuses the nitrogen to the soil. Prokaryotes also plays an important role in the nitrogen cycle. The nitrogen fixing bacteria present in the root zone of plants basically in the soil, helps in conversion of the nitrogen into ammonia. Then the nitrifying bacteria converts the ammonia to the nitrites or can say nitrates.  

Answer:

sorry I didn't know hahaha

Which compound is known as end product of purine nucleotide metabolism? * Uric acid Carbonic acid Uronic acid Citric acid

Answers

Uric acid is the answer mate

what part of a glucose molecule provides electrons in cellular respiration?

Answers

Answer:

Hydrogen atoms are the part of the glucose molecule that provides electrons in cellular respiration.

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Hydrogen atoms are the part of the glucose molecule that provides electrons in cellular respiration. (b) Electron transport complexes set up a proton gradient by passing protons from the mitochondrial matrix to the intermembrane space. NADH gives up the two electrons it carries to NADH hydrogenase.

In a well-fed human eating a Western diet, the richest source of stored chemical energy in the body is ________. In a well-fed human eating a Western diet, the richest source of stored chemical energy in the body is ________. glucose in the blood fat in tissue calcium phosphate in bone glycogen in muscle cells protein in muscle cells

Answers

Answer:

fat in tissue

Explanation:

Biomolecules like carbohydrates, fats etc. are well known for their energy storing abilities. Glucose, as a carbohydrate, is the most used source of energy but is stored in excess as glycogen in the muscle and liver cells.

However, fats are far more efficient in storing energy than carbohydrates or proteins because they give more ATP per molecule. Fats are stored in tissues of the body called ADIPOSE tissues. Hence, the richest source of stored chemical energy in the body is FATS IN TISSUES.

PLZZ HELP

Phosphorus is mainly found in the environment stored in
A. the atmosphere
OB. legumes
C. mineral deposits
D. denitrifying bacteria

Answers

Answers: I think it’s a or c

Explanation:

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