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erik [133]
4 years ago
12

In 1883, Theodor Engelmann devised an experiment to find out which wavelengths of light were most used by photosynthetic organis

ms. He placed a strip of algae on a microscope slide, and then projected a spectrum of light on the slide. A suspension of oxygen-loving" bacteria was also placed on the slide. Based on an understanding of the light reactions of photosynthesis, predict the most likely outcome of the experiment."
Biology
1 answer:
wel4 years ago
6 0

Answer:

Oxygen loving bacteria are accumulated only in two areas in the slide, at its ends, areas rich in oxygen

Explanation:

A prism decomposed the light in different wavelengths between 400 and 700 nm.  Plants only absorbed some wavelenghts, one that peaks at about 440nm and the other around the 660 nm, as their particular Chlorophyls used to work.

Electrons from a reaction center from a photosystem (PSII) containing a particular chlorophyl , are launched to higher levels of energy when this is excited by light wavelength (680 nm) and travel by a molecular chain to an acceptor of electrons, forming ATP.  To refill the electrons in the reaction center, H2O is hydrolyzed, and their e- reach the reaction center.  In this step O2 is also produced.

A second photosystem (PSI) is also excited from another similar reaction center, whose electrons are used to produce reducing power in the form of NADPH.  This photosystem I also acts as acceptor of the electrons coming from PSII

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The dorsal root ganglia mainly contain
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C) cell bodies of sensory neurons

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See attachment for better visual understanding.

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3 years ago
our nervous system is organized into two broad anatomical divisions: the central nervous system (consisting of the brain and spi
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Answer:

If you tap your knee, the signal to act is carried via your somatic nervous system to the muscles in your knee. In contrast, the signals that pass via the autonomic nervous system are involuntary and act primarily to regulate your body's internal environment. This involuntary nerve system is further organized into three divisions. If you need a sudden burst of energy, your sympathetic nervous system is activated to help you act quickly. In contrast, if you are relaxing and conserving energy, then it is your parasympathetic nervous system that is primarily in action. The third division is your enteric nervous system which helps control the components of the digestive system.

Explanation:

Peripheral nervous system (PNS) is the nervous system that contains nerves and ganglia outside the central nervous system (CNS). PNS is divided into:

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