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guajiro [1.7K]
3 years ago
8

What is photoexcitation

Biology
2 answers:
Dahasolnce [82]3 years ago
8 0
Photoexcitation<span> is the photoelectrochemical process of electron excitation by photon absorption, when the energy of the photon is too low to cause photoionization. The absorption of the photon takes place in accordance with Planck's quantum theory.</span>
USPshnik [31]3 years ago
3 0
<span> process of exciting the atoms or molecules of a substance by the absorption of radiant energy</span>
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How does fertilization produce new offspring?
wel

Answer:

D

Explanation:

Sexual reprduction is when a sperm cell fertilzes an egg cell.

7 0
3 years ago
One day you notice that part of your garden is much more prolific in producing flowers than another part. You observe that some
makvit [3.9K]

Answer and Explanation:

The steps of the scientific method are

1) A question the investigator wants to answer.

2) Antecedents or Previous knowledge about the study object.

3) The goal, which is what the investigator wants to know.

4) The hypothesis that the investigator makes in order to predict what is going to happen.

5)The experiment is performed to answer the question.

6) Results achievement

7) Conclusions where the hypothesis is rejected or accepted.

In the case of the exposed example,

  1. Question: How does the amount of sunlight affect the extent of flower production?
  2. Previous knowledge and antecedents about solar radiation influencing different plant growth and flowering. Information about the species of interest. Other studies or investigations performed in relation to this question.
  3. Objective/Goal: To study the influence of sunlight in flowering
  4. Hypothesis: Too many hours of radiation affect flowering production
  5. Experiment: (Example)

Native species are going to be planted in the garden to observe their growth and flower production at different exposure levels to sunlight. Native species will be planted, as they are used to the environmental conditions and they do not need extra care, as a cultivated species would. More than one individual is needed to ensure their establishment. All the species will be watered according to each species needs and location. Plagues will be equally controlled.

  • 3 native individuals of a herbaceous plant, 3 native individuals of a woody plant, and 3 native grass plants are located in a sunny section that receives straight sun radiation during the whole light hours.  
  • 3 native individuals of a herbaceous plant, 3 native individuals of a woody plant, and 3 native grass plants are located in a sunny section that receives sun radiation during half a day
  • 3 native individuals of a herbaceous plant, 3 native individuals of a woody plant, and 3 native grass plants are located in a  shaded section.

Plants will be grown and the flowering process will be recorded by season in relation to the number of flowers, sizes, quality, and pollinizer visitors which will reflect the amount and quality of nectar.

6 y 7. Every recorded result will be then analyzed to conclude.      

8 0
3 years ago
can someone actually help me please The crystals have been dissolved in water. Notice the copper(II) sulphate is the blue soluti
lidiya [134]
The Soduim Hydroxide is just lye. It’s a caustic solution used in lots of things like soap, paper and metal processing.
Copper Sulfate gets its blue color from light energy that excites the electrons. It’s an anti microbial and used with wellness healing. Also has agricultural uses as well. Hope this helps you.
8 0
3 years ago
Ling made a study chart for science class.
aliina [53]

Alyssa's additional observation would be cell Y having a larger vacuole than cell X. The third option is the correct one.

<h3>Plant cell vs animal cell</h3>

From the observations, both cells are eukaryotic. This is because:

  • cell X has lysosomes which are only found in eukaryotic cells
  • cell Y has a nucleus which also peculiar to eukaryotic cells only

Lysosome houses digestive enzymes and is found mostly in animal cells. Only a few plant cells have lysosomes.

Thus, the lack of a lysosome means that cell Y is a plant cell while the presence means that cell X is an animal cell.

Generally, plant cells have larger vacuoles than animal cells.

More on plant and animal cells can be found here: brainly.com/question/1493437

#SPJ1  

4 0
2 years ago
Which if the following are folds of mucosa only?
Diano4ka-milaya [45]

Answer: Haustra

Explanation:

6 0
3 years ago
Read 2 more answers
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