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photoshop1234 [79]
3 years ago
14

Of the following experimental results, which is the best evidence that photosynthesis is more efficient at certain wavelengths o

f light than at others? a. The absorbance spectrum of leaves had high peaks of absorbance in the red and blue regions of the spectrum.
b. Purified photosyntheic pigments were found to absorb light mostly in the red and blue area.

c. When placing motile bacterium dependent on oxygen in suspension with filamentous algae that were illuminated with a projected spectrum, the bacteria were found to cluster around red and blue regions.

d. Chromatography of leaf extracts revealed pigments of different colors.

e. All of the Above
Biology
1 answer:
GarryVolchara [31]3 years ago
5 0

Answer:

The correct answer will be option-C

Explanation:

The plant absorbs the sunlight to perform photosynthesis which helps produce the sugar molecule used by the plants.

The plants absorb maximum sunlight at two wavelengths that are red and blue wavelength by chlorophyll and other pigments. The efficiency of photosynthesis is also measured maximum at these two active wavelengths called action spectrum.

In the given question, since the efficiency of photosynthesis has been discussed which could be measured with the production of oxygen and consumption of carbon dioxide. The experiment performed by the Engelmann showed that aerobic bacteria got concentrated in the blue and red wavelengths as the output of the photosynthesis were observed maximum.

Thus, the selected option is the correct answer.

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Which property results from the crystal lattice structure of ionic compounds? A. low melting point B. good electrical conductivi
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Answer:

C.) crystalline solids

Explanation:

The solid materials may be crystalline or amorphous. The concept of crystal structure is related to the organization of atoms in a geometrical form. Crystalline structures are present in various materials, where atoms distributed within their structure form a network called the crystalline lattice. Therefore, crystalline structures have salts, metals and most minerals. Crystalline structures are formed by unit cells that are their basic unit, as they constitute the smallest set of associated atoms found in a crystalline structure.

The molecules of the crystalline structures can have two types of bonds, the directional ones, which include the covalent and dipole dipole and the non-directional ones where the metallic, ionic, van der Walls bonds. When formed by ionic compounds, these crystalline structures can result in crystalline solids.

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3 years ago
2,4-dinitrophenol (DNP) is a weak acid that can diffuse across lipid membranes. When added to eukaryotic cells, DNP can enter th
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Answer:

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3 0
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schepotkina [342]
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4 0
3 years ago
Has anyone done this yet ? I need help
Mariana [72]

Answer:

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Hope this helps. :)

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