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AysviL [449]
4 years ago
9

A student investigating the importance of wavelengths above and below the visible spectrum for photosynthesis sets up an experim

ent as follows over a 2-month period, all with illumination at 1 meter distance from plants grown with the same soil and watering conditions. ollapse 3 Arabidopsis plants exposed to ultraviolet light (UV) 3 Arabidopsis plants exposed to infrared light (IR) 3 Arabidopsis plants exposed to white light At the end of the experiment, she finds that the IR treated plants are scorched, the UV treated plants have wilted, but the white light-treated plants are growing normally.
Which of the following statements is most likely to be correct?
A) Three plants do not provide sufficient replications to draw a conclusion
B) Wavelength of light is the only variable that has been changed between groups.
C) The wavelength of light does not affect photosynthesis.
D) Infrared light contains more energy than the other wavelengths.
Biology
1 answer:
Helen [10]4 years ago
8 0

Answer:

The correct answer is : B) Wavelength of light is the only variable that has been changed between groups.

Explanation:

In this three plants in three different conditions shows three different outcomes so their is sufficient replication to draw a conclusion. The wavelength of the light affects the growth of the plant. UV light has very low wavelengths below 400 nm than the photons required similarly Infrared light has higher wavelengths that is low energy light, UV can cause wilting and leaf burn.

So, the wavelengths of the light and growth of plant are related and this experiment only wavelengths of the lights are changed.

Thus, the correct answer is :  B) Wavelength of light is the only variable that has been changed between groups.

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Two parents both have the genotype gg for a genetic disorder caused by a recessive allele. what is the chance that any of their
mel-nik [20]
100% because all four are recessive. The case would be different if one of the parents were to have the genotype GG or Gg because G is a dominant allele but since all the alleles are recessive, the chance is 100%

Answer: 100%

Hope this helped!
7 0
3 years ago
A postitivly charged atom has? A.Lost electrons B. Lost protons C.Gained electrons D.Gained protons
Kipish [7]

Not to be too picky, but the question ought to say a positively charge ion rather than atom.

I will assume that is what you mean. An ion, using ordinary means, will be positive if it loses electrons (which are negative).

An ion can never gain protons. Left alone, the nucleus will remain unchanged for the rest of eternity. D is wrong.

C is wrong. If electrons are gained, the ion will go negative.

B is wrong for the same reason D is. An ion can't gain protons and it can't lose them.

A is the answer.

6 0
3 years ago
A. 4 examples of macronutrients<br> B. 2 examples of micronutrients
vovikov84 [41]
Answer:
Macronutrients: water, fat, carbohydrates, protein
Micronutrients: minerals, vitamins

Explanation:
The six types of nutrients humans need are water, fat, carbohydrates, protein, minerals, and vitamins.

Macronutrients are nutrients we need in large amounts (macro- means big).
Micronutrients are nutrients we need in small amount (micro- means small).

Consider what you eat in a day, you (should) be getting all of these.

It's recommended you have about 8 cups of water a day, which is a large amount.
Fat and carbohydrates are used as sources of energy and are consumed in large amounts.
Proteins (meats, nuts) used to build muscle are also eaten in large amount.

Minerals and vitamins have recommended intakes of milligrams (mg) which is a very small amount. They are found in traces in our food. For example, you would not fill your entire palm with calcium and eat it. You only need small amounts of calcium (probably in your milk).
5 0
3 years ago
Please what's an ecosystem​
pishuonlain [190]
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5 0
3 years ago
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These sausage shaped organelles burn glucose and store the energy as ATP
aivan3 [116]
The answer is mitochondria. They are the powerhouses of the cell.
Hope that answered your question.
3 0
3 years ago
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