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Ainat [17]
3 years ago
7

Refer the the graph below showing the absorption spectrum of chlorophyll a. Explain what the graph is showing

Biology
1 answer:
Stella [2.4K]3 years ago
7 0

Answer: The graph shows that chlorophyll a absorbs light principally around 420-450 nm and 650-680nm wavelengths

Explanation: Chlorophyll a is a pigment found in plants that traps light energy for use in photosynthesis. Chlorophyll a absorbs light mostly in the blue and orange-red wavelengths. This is shown in the graph, where the peaks are around the 400nm and 600nm wavelengths, corresponding to blue and red in visible light.

This absorption means the pigment is 'excited' by this light, sending into a higher state if energy which provides energy for the reactions of photosynthesis.

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The lungs remain inflated because ___________.a. intrapleural pressure is exactly equal to atmospheric pressure b. intrapleural
kkurt [141]

Answer:

Option C,  Intrapleural pressure is less than intrapulmonary pressure

Explanation:

During inspiration, the air enters the lungs due to lower pressure in the intrapulmonary or intra-alveolar  than the atmospheric pressure. During quite respiration, the intrapulmonary pressure reduces to a pressure that is 3 mm Hg lower than that of atmospheric pressure. During quiet expiration, the intrapulmonary pressure rises up to a pressure that is 3 mm Hg higher than that of atmospheric pressure. This leads to lack of air in the intrapleural space thereby producing intrapleural pressure which is lesser than that of intrapulmonary pressure.  

This difference in pressure (i.e higher pressure with in the lungs than the atmosphere)  causes lungs to remain attached to the chest wall and hence looks inflated.  

Hence, option C is correct

8 0
3 years ago
W.S. Sutton proposed that the ____ are located on _____ and these factors segregate during _____ and the production of gametes.
Lana71 [14]
The answer is genetic factors, chromosomes, meiosis.

W.S. Sutton proposed that the <u>genetic factors</u> are located on <u>chromosomes </u>and these factors segregate during <u>meiosis </u>and the production of gametes.

Genetic factors are now known as genes, which are sequences on chromosomes. They code for proteins. Meiosis is a cell division resulting in the reduction of number of chromosomes in gametes.
3 0
3 years ago
Which substance is a nucleic acid? amino acid fat polysaccharide RNA
nata0808 [166]
Nucleic acids, which include DNA (deoxyribonucleic acid) and RNA<span> (ribonucleic acid), are made from monomers known as nucleotides. Each nucleotide has three components: a 5-carbon sugar, a </span>phosphate<span> group, and a nitrogenous base. If the sugar is deoxyribose, the polymer is DNA. 

hope this helps you !!!!</span>
6 0
4 years ago
Read 2 more answers
In seed-bearing plants, what structure becomes the seed following fertilization?.
Amiraneli [1.4K]

The ovule becomes the seed.

6 0
2 years ago
A student is investigating the question “Which increases a person’s breathing rate more after three minutes, lifting five-pound
Mashcka [7]

Answer:

The breating rate is the dependent variable because it can be affected by varying weights.

Explanation:

In an experiment, the dependent variable is the variable that is not manipulated but is influenced by the changes that are done to the independent variable. In other words, it depends on the independent variable.

So in this case, the breathing rate is the dependent variable and the weight differences is the independent variable because the change in weight is what is changed to see if it will affect the breathing rate, which is the dependent variable.

6 0
4 years ago
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