(a) granular structure (b) first observed under the electron microscope as dense particles by Geprge Palade ( c ) composed of RNA and proteins not sur

(a) granular structure (b) first observed under the electron microscope as dense particles by Geprge Palade ( c ) composed of RNA and proteins not sur
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(a) granular structure (b) first observed under the electron microscope as dense particles by ... Nucleolus B. Ribosomes C. Cristae D. Chloroplast
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What is viewed through an electron microscope? (1) Electrons and other elementary particles (2) Structure of bacteria and viruses (3) Inside of human stomach (4) Inside of the human eye

Description : What is viewed through an electron microscope? (1) Electrons and other elementary particles (2) Structure of bacteria and viruses (3) Inside of human stomach (4) Inside of the human eye

Last Answer : (2) Structure of bacteria and viruses Explanation: Electron microscopes are used to observe a wide range of biological and inorganic specimens including microorganisms, cells, large molecules, ... microscope because electrons have wavelengths about 100,000 times shorter than visible light photons.

What is viewed through an electron microscope? (1) Electrons and other elementary particles (2) Structure of bacteria and viruses (3) Inside of human stomach (4) Inside of the human eye

Description : What is viewed through an electron microscope? (1) Electrons and other elementary particles (2) Structure of bacteria and viruses (3) Inside of human stomach (4) Inside of the human eye

Last Answer : Structure of bacteria and viruses

An electron microscope gives higher magnification than an optical microscope, because: (1) It uses more powerful lenses (2) the velocity of electron is smaller than that of visible (3) the electrons have more energy than the light particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light

Description : An electron microscope gives higher magnification than an optical microscope, because: (1) It uses more powerful lenses (2) the velocity of electron is smaller than that of visible (3) the ... particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light

Last Answer : (4) the wavelength of electrons is smaller as compared to the wavelength of visible light Explanation: An electron microscope uses a beam of electrons to illuminate a specimen and produce a ... photons. Magnification is the process of enlarging something only in appearance, not in physical size.

An electron microscope gives higher magnification than an optical microscope, because : (1) it uses more powerful lenses (2) the velocity of electron is smaller than that of visible light (3) the electrons have more energy than the light particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light

Description : An electron microscope gives higher magnification than an optical microscope, because : (1) it uses more powerful lenses (2) the velocity of electron is smaller than that of visible light (3) ... particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light

Last Answer : the wavelength of electrons is smaller as compared to the wavelength of visible light

Nissl’s bodies are mainly composed of (a) proteins and lipids (b) DNA and RNA (c) nucleic acids and SER (d) free ribosomes and RER.

Description : Nissl’s bodies are mainly composed of (a) proteins and lipids (b) DNA and RNA (c) nucleic acids and SER (d) free ribosomes and RER.

Last Answer : (d) free ribosomes and RER.

Nissl bodies are mainly composed of (1) Proteins and lipids (2) DNA and RNA (3) Nucleic acids and SER (4) Free ribosomes and RER

Description : Nissl bodies are mainly composed of (1) Proteins and lipids (2) DNA and RNA (3) Nucleic acids and SER (4) Free ribosomes and RER

Last Answer : (4) Free ribosomes and RER

Electronic structure of a material is generally studied by (A) Metallurgical microscope (B) Electron diffraction (C) Spectroscopic techniques (D) X-ray

Description : Electronic structure of a material is generally studied by (A) Metallurgical microscope (B) Electron diffraction (C) Spectroscopic techniques (D) X-ray

Last Answer : (C) Spectroscopic techniques

Pick out the wrong statement. (A) The X-rays cannot be deflected by electric field unlike cathode rays (B) The intensity of X-rays can be measured by ionisation current produced due to the ionisation of gas by X-rays (C) The quality of X-rays can be controlled by varying the anode-cathode voltage (D) Crystal structure of a material can be studied by an electron microscope

Description : Pick out the wrong statement. (A) The X-rays cannot be deflected by electric field unlike cathode rays (B) The intensity of X-rays can be measured by ionisation current produced due to the ... the anode-cathode voltage (D) Crystal structure of a material can be studied by an electron microscope

Last Answer : (C) The quality of X-rays can be controlled by varying the anode-cathode voltage

Ribosomes were discovered by (a) Golgi (b) Porter (c) de Robertis (d) Palade.

Description : Ribosomes were discovered by (a) Golgi (b) Porter (c) de Robertis (d) Palade.

Last Answer : (d) Palade.

Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to? -Biology

Description : Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to? -Biology

Last Answer : The green dot-like structures in some cells observed by a student when a leaf peel is viewed under a microscope are chloroplasts. The green colour is due to the presence of green pigment, chlorophyll.

Discrete or granular particles change their A. Size B. Shape C. Weight D. None of these

Description : Discrete or granular particles change their A. Size B. Shape C. Weight D. None of these

Last Answer : ANS: D

Pick up the correct statement from the following: (A) According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight (B) According to the shape of the particles, concrete aggregates are classified as rounded irregular, angular and flaky (C) According to the surface texture of the particles, the concrete aggregates are classified as glassy, smooth, granular, rough, crystalline, honey combed and porous (D) All the above

Description : Pick up the correct statement from the following: (A) According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight (B) According to ... glassy, smooth, granular, rough, crystalline, honey combed and porous (D) All the above

Last Answer : Answer: Option D

Under the electron microscope, you observe a cell with three different types of large organelles, each bounded by two membranes. The cell is most likely (a) A plant (b) An animal (c) A fungus (d) A bacterium

Description : Under the electron microscope, you observe a cell with three different types of large organelles, each bounded by two membranes. The cell is most likely (a) A plant (b) An animal (c) A fungus (d) A bacterium

Last Answer : Ans:(a)

What are the structures called that give an appearance as ‘beads-on-string’ in the chromosomes when viewed under electron microscope? (a) Genes (b) Nucleotides (c) Nucleosomes (d) Base pairs

Description : What are the structures called that give an appearance as ‘beads-on-string’ in the chromosomes when viewed under electron microscope? (a) Genes (b) Nucleotides (c) Nucleosomes (d) Base pairs

Last Answer : Nucleosomes

Why are Evergreen forests composed of thick vegetation and dense foliage? -SST 10th

Description : Why are Evergreen forests composed of thick vegetation and dense foliage? -SST 10th

Last Answer : Due to heavy rain, high temperatures and humidity, the soil retains moisture even after the rainy season. Places near the Equator get rain practically everyday. There is thick undergrowth of leaves and trees. The trees grow tall with thick foliage.

What are cordlike structures composed of dense fibrous connective tissue that attach muscles to bones?

Description : What are cordlike structures composed of dense fibrous connective tissue that attach muscles to bones?

Last Answer : Need answer

A keloid is composed predominantly of: B A. Granulation tissue B. Dense collagen C. Loose connective tissue D. None of these

Description : A keloid is composed predominantly of: B A. Granulation tissue B. Dense collagen C. Loose connective tissue D. None of these

Last Answer : Dense collagen

“Ramachandran plot” is used to confirm the structure of (a) RNA (b) proteins (c) triacylglycerides (d) DNA

Description : “Ramachandran plot” is used to confirm the structure of (a) RNA (b) proteins (c) triacylglycerides (d) DNA

Last Answer : (b) proteins

Before bacterial cells are simple stained and observed with the light microscope, they must be a. Smeared on a slide. b. Heat fixed. c. Air dried. d. All the above (A—C) are correct.

Description : Before bacterial cells are simple stained and observed with the light microscope, they must be a. Smeared on a slide. b. Heat fixed. c. Air dried. d. All the above (A—C) are correct.

Last Answer : d. All the above (A—C) are correct.

A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution? (a) Blue (b) Green (c) Yellow (d) Red

Description : A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution? (a) Blue (b) Green (c) Yellow (d) Red

Last Answer : (a) Blue

What is the dense mass of small water drops on smoke particles in the lower layers of the atmosphere? -Do You Know?

Description : What is the dense mass of small water drops on smoke particles in the lower layers of the atmosphere? -Do You Know?

Last Answer : Smog is the correct answer.

What is the dense mass of small water drops on smoke particles in the lower layers of the atmosphere

Description : What is the dense mass of small water drops on smoke particles in the lower layers of the atmosphere

Last Answer : Smog

Palm Springs, CA or Big Sur, CA for a short weekend trip?

Description : Palm Springs, CA or Big Sur, CA for a short weekend trip?

Last Answer : Palm Springs has great weather and shopping, but I wouldn’t consider it a place to get in touch with yourself. I would choose Big Sur, Yosimite, or somewhere else with more natural beauty and less commercial influence.

What do you call "Raag" and "Sur" in English?

Description : What do you call "Raag" and "Sur" in English?

Last Answer : What?

Is it possible to drive to Terrace Camp along the Sykes Hot Springs hike in Big Sur?

Description : Is it possible to drive to Terrace Camp along the Sykes Hot Springs hike in Big Sur?

Last Answer : Only in a four wheel drive. You will need to check at the Park Rangers cabin before starting out, though.

Has anyone read Jack Keroauc's 'Big Sur'? Was it a difficult read for you?

Description : Has anyone read Jack Keroauc's 'Big Sur'? Was it a difficult read for you?

Last Answer : Big Sur is in my to-read stack. Like any twenty-something American male, On The Road is one of my top five novels. I enjoyed Dharma Bums a lot. But something is keeping me from Big Sur, and your question doesn' ... any time soon. So, to answer your question, no, I haven't read it. But I'd like to.

je veux un site pour telecharger et regarder en streaminG Film FRENCH sur uptobox 1fichier merci?

Description : je veux un site pour telecharger et regarder en streaminG Film FRENCH sur uptobox 1fichier merci?

Last Answer : pour moi le mieur site de telechargement et streamin des film french c est streaming7

What is the ancient name of sur?

Description : What is the ancient name of sur?

Last Answer : Need answer

Most abundant compound on earth's sur- face?

Description : Most abundant compound on earth's sur- face?

Last Answer : Water (H20)

Most abundant element in moon's sur- face?

Description : Most abundant element in moon's sur- face?

Last Answer : Titanium

The whole living world on the earth's sur- face is called?

Description : The whole living world on the earth's sur- face is called?

Last Answer : Biosphere

Other than electrons, what else can you magnify and view with an electron microscope?

Description : Other than electrons, what else can you magnify and view with an electron microscope?

Last Answer : My Paycheck

On which property of electrons does the electron microscope work?

Description : On which property of electrons does the electron microscope work?

Last Answer : Answer: Wave nature.

What is the magnification of an electron microscope?

Description : What is the magnification of an electron microscope?

Last Answer : Answer: 100000.

What is the difference between a Light Microscopes and an Electron Microscope?

Description : What is the difference between a Light Microscopes and an Electron Microscope?

Last Answer : The optical microscope is the most common. It uses light to image a sample that is too small to be seen by the naked eye.The scanning electron microscope examines the surface of objects using an electron beam and measuring reflection.Short Answer = Resolution.

What is the difference between how a light microscope magnifies an image and how an electron microscope magnifies an image?

Description : What is the difference between how a light microscope magnifies an image and how an electron microscope magnifies an image?

Last Answer : What is the answer ?

What is the difference between a Light Microscopes and an Electron Microscope?

Description : What is the difference between a Light Microscopes and an Electron Microscope?

Last Answer : The optical microscope is the most common. It uses light to image a sample that is too small to be seen by the naked eye.The scanning electron microscope examines the surface of objects using an electron beam and measuring reflection.Short Answer = Resolution.

How many electron microscope in Pakistan and which place?

Description : How many electron microscope in Pakistan and which place?

Last Answer : 1

An electron microscope gives higher magnifications than an optical microscope because – (1) The velocity of electrons is smaller than that of light (2) The wavelength of electrons is smaller as compared to the wavelength of visible light (3) The electrons have more energy than the light particulars (4) The electron microscope uses more powerful lenses

Description : An electron microscope gives higher magnifications than an optical microscope because - (1) The velocity of electrons is smaller than that of light (2) The wavelength of electrons is smaller as ... have more energy than the light particulars (4) The electron microscope uses more powerful lenses

Last Answer : (2) The wavelength of electrons is smaller as compared to the wavelength of visible light Explanation: An electron microscope is a microscope that uses a beam of accelerated electrons as a spume ... a higher resolving power than a light microscope and can reveal the structure of smaller objects.

Electron microscope was invented by – (1) Knoll and Ruska (2) Robert. Koch (3) Lecuwenhock (4) C.P. Swanson

Description : Electron microscope was invented by – (1) Knoll and Ruska (2) Robert. Koch (3) Lecuwenhock (4) C.P. Swanson

Last Answer : (1) Knoll and Ruska Explanation: It is widely accepted that the first prototype of an electron microscope was built by Ernst Ruska and Max Knoll in 1931; it was not more powerful than an ... . An electron microscope uses a beam of electrons to illuminate a specimen and produce a magnified image.

Electron Microscope is more magnifier than light microscope because –

Description : Electron Microscope is more magnifier than light microscope because –

Last Answer : Wavelength of electron is less than the wavelength of light

The construction of electron microscope was based on?

Description : The construction of electron microscope was based on?

Last Answer : Dual Nature of Matter

Write a note on Electron Microscope?

Description : Write a note on Electron Microscope?  

Last Answer : This is advanced microscope. Its resolving power is 250 times more than a normal microscope. In this microscope a beam of electrons under high voltage is passed through object for making ... Electron microscope has a capacity to magnify an object upto 250000 times than its original size. 

Genetic engineering is possible, because (a) we can cut DNA at specific sites by endonucleases like DNase I (b) restriction endonucleases purified from bacteria can be used in vitro (c) the phenomenon of transduction in bacteria is well understood (d) we can see DNA by electron microscope

Description : Genetic engineering is possible, because (a) we can cut DNA at specific sites by endonucleases like DNase I (b) restriction endonucleases purified from bacteria can be used in vitro (c) the phenomenon of transduction in bacteria is well understood (d) we can see DNA by electron microscope

Last Answer : (b) restriction endonucleases purified from bacteria can be used in vitro

Nucleotide arrangement in DNA can be seen by (a) X-ray crystallography (b) electron microscope (c) ultracentrifuge (d) light microscope

Description : Nucleotide arrangement in DNA can be seen by (a) X-ray crystallography (b) electron microscope (c) ultracentrifuge (d) light microscope

Last Answer : (a) X-ray crystallography

Electron microscope has a high resolution power. This is due to (a) electromagnetic lenses (b) very low wavelength of electron beam (c) low wavelength of light source used (d) high numerical aperture of glass lenses used.

Description : Electron microscope has a high resolution power. This is due to (a) electromagnetic lenses (b) very low wavelength of electron beam (c) low wavelength of light source used (d) high numerical aperture of glass lenses used.

Last Answer : (b) very low wavelength of electron beam

A major breakthrough in the studies of cells came with the development of electron microscope. This is because (a) the electron microscope is more powerful than the light microscope as it uses a beam of electrons which has wavelength much longer than that of photons (b) the resolving power of the electron microscope is much higher than that of the light microscope (c) the resolving power of the electron microscope is 200 - 350 nm as compared to 0.1 - 0.2 nm for the light microscope (d) electron beam can pass through thick materials, whereas light microscopy requires thin sections.

Description : A major breakthrough in the studies of cells came with the development of electron microscope. This is because (a) the electron microscope is more powerful than the light microscope as it ... (d) electron beam can pass through thick materials, whereas light microscopy requires thin sections.

Last Answer : (b) the resolving power of the electron microscope is much higher than that of the light microscope

The _____ microscope would be used to view cell structures within ultrathin sections of cells. a. scanning electron b. transmission electron c. bright-field d. dark-field

Description : The _____ microscope would be used to view cell structures within ultrathin sections of cells. a. scanning electron b. transmission electron c. bright-field d. dark-field

Last Answer : b. transmission electron

If you wanted to study the surface of a bacterial cell, you would use a. A transmission electron microscope. b. A light microscope with phase-contrast optics. c. A scanning electron microscope. d. A light microscope with dark-field optics.

Description : If you wanted to study the surface of a bacterial cell, you would use a. A transmission electron microscope. b. A light microscope with phase-contrast optics. c. A scanning electron microscope. d. A light microscope with dark-field optics.

Last Answer : c. A scanning electron microscope.

If you wanted to study bacterial motility you would most likely use a. A transmission electron microscope. b. A tight microscope with dark-field optics. c. A scanning electron microscope. d. A light microscope with phase-contrast optics.

Description : If you wanted to study bacterial motility you would most likely use a. A transmission electron microscope. b. A tight microscope with dark-field optics. c. A scanning electron microscope. d. A light microscope with phase-contrast optics.

Last Answer : a. A transmission electron microscope.