The statement regarding chloroplasts is false - C Thylakoids are pigments found within chloroplasts that give plants their green color.
In the plant cells and other autotrophic cells, there is a cell organelle called chloroplast that is essential for every ecosystem as it produces food for their energy.
Chloroplasts:
Thus, the statement regarding chloroplasts is false - C.
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Answer:
Air is a bad conductor because, to conduct heat current molecules should absorb heat and transmit it to neighbor by vibrating. So , "If air were a good conductor of heat" then soup will not stay hot for longer because this time convection+conduction will both help to transfer heat away from soup.
Explanation:
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Answer: There are 7 Major Plates.
Explanation: The outer shell of the earth, the lithosphere, is broken up into tectonic plates. The seven major plates are the African plate, Antarctic plate, Eurasian plate, Indo-Australian plate, North American plate, Pacific plate and South American plate.
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Answer:
there are 7 of them
Explanation:
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Electron microscopes' specimens can be stained for contrast, while light microscopes' specimens appear black and white
Electron microscopes are used for dissections, while compound light microscopes are not.
Electron microscopes use electron beams and electromagnetic lenses, while compound light microscopes use light and ocular and objective lenses.
Explanation:
D) Electron microscopes use electron beams and electromagnetic lenses, while compound light microscopes use light and ocular and objective lenses.
Microscopes are instruments used for viewing microscopic cellular structures, not visible with the human eye. With an arrangement of lenses, and manipulation of light or electrons, these magnify very small objects. Light microscopy uses light and multiple lenses, while electron microscopes use electrons. These create larger images of objects.
While light microscopes with a resolution power of 0.2 um can view objects at a magnification x1000, electron microscopes are capable of a much smaller resolution at 0.5 nm and magnification of x100,000.
The wavelengths of light in the visible part of the eletromagnetic spectrum (visible light is between 390 nm and 760 nm,) are manipulated in light microscopy. The visible light is passed through the biological sample where it bends, as it travels through multiple lenses. This is often usable on live organisms. Thus the observer can look at cells as they undergo division or locomotion. Resolution describes the shortest distance, where two objects are still visible as distinct bodies. With light microscopes, one may view objects between a millimeter (10-3 m) and a fraction of a micrometer at 0.2 thousands of a millimetre or 2 x 10-7 m.
Unlike light microscopy, electron microscopy involves the manipulation of electrons through the apparatus, under a vacuum. As the beams of electrons have shorter wavelengths than light particles, the images produced have higher resolution and can be seen more clearly. The sample is meticulously prepared, and is typically not made up of live cells; EM can be used in viewing subcellular components, such as organelles and can view structures as small as atoms at 1/10 000 000 of a millimeter, 10-10 m.
Learn more about cellular life at brainly.com/question/11259903
Learn more about tissue types at brainly.com/question/8487952
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The correct option is (D) Electron microscopes use electron beams and electromagnetic lenses, while compound light microscopes use light and ocular and objective lenses.
A microscope is an instrument that is utilized to amplify small objects. A few microscope might be utilized to notice an object at the cell level, allowing researchers to see the state of a cell, its nucleus, mitochondria, and different Organelles.
Electron Microscope utilizes a light emission and their wave-like qualities to magnify an object's image. The Light Microscope employs visible light to detect tiny objects.
Hence, the correct option is D.
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b prokaryotic
c bacteria
d unicellular
Your lac operon is expressed.
You have not consumed lactose from dairy recently,
None of the above.
Answer:
You have not consumed lactose from dairy recently
Explanation:
According to the diagram, there is a represssor element in the regulatory region of the operon. This repressor is blocking the RNA polymerase, that is bound to its promoter region upstream of the genes, from transcription. The repressor is mostly the lac repressor that switches of the operon in the absence of lactose.