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Anton [14]
3 years ago
11

Which of the following statements is the best description for the overall reaction that occurs during photosynthesis?

Biology
1 answer:
Nikitich [7]3 years ago
8 0

Answer: I believe the answer is A

Explanation:

When plants undergo photosynthesis,  they make sugar. Why sugar? Because, it is one of their resources they need to survive. I know that they also need oxygen and water. Carbon dioxide is also vital in their survival. I hope this helps!

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Kathy was making liquid growth medium for plants. The pH of the original solution was 8. The optimal pH for plant growth is 6. W
liubo4ka [24]

If referring to the question: Kathy was making liquid growth medium for plants. The pH of the original solution was 8. The optimal pH for plant growth is 6. What was the best compound to add to make it pH=6?

A) KOH

B) HCL

C) Water

D) No answer provided

Then the correct answer would be option B, to add HCL, known as Hydrochloric acid to lower the pH to 6.

In science, pH is a scale used to measure the acidity of a solution or its basicity. The scale ranges from 0 to 14. A pH of 7 would mean that the given solution is neutral, lower than 7 equates to an acidic solution, while anything above 7 becomes increasingly basic.

Option A is to add KOH, or potassium hydroxide to the original solution whose starting pH is 8. KOH is a solution whose pH is above 8,  a strong base, and is often used to increase the pH of a solution. In the question it states what the desired pH is 6, therefore we want to lower, not increase the pH. This makes option A incorrect.

Water is a neutral solution. Even though it is neutral, it is not used to neutralize basic or acidic solutions. Acid or bases may be added to water to create very diluted solutions that are nearly neutral despite containing a strong base or acid, but this is a different process than neutralization and will not give the desired pH. Option C is also wrong.

Option B is correct because HCL, known as hydrochloric acid is a strong acid, commonly used to lower the pH of a solution by increasing the concentration of hydrogen ions. Since we start with a pH of 8 and wish to achieve a pH of 6, HCL is the correct component to add to the solution. Due to option B being correct, option D that states that no answer is provided, is incorrect.

For more on pH visit:

brainly.com/question/491373?referrer=searchResults

8 0
3 years ago
(15 points) One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. Accor
gladu [14]

Answer:

Synthesis of organic molecules

Explanation:

5 0
3 years ago
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You have been contacted to help solve the problem of baudoinia in kentucky because it is within your area of expertise. what are
Alik [6]
I am a mycologist. A person who studied biology major mycology. Mycology is the study of fungi. An expert in fungi's genetic and biochemical makeup, pathogen, and taxonomy. I also study benefits and usage in humans as food and medicine together with the innate danger and poisons.  
6 0
3 years ago
What is the magnitude (amplitude) of an action potential? <br> a. 30 mv <br> b. 70 mv <br> c. 100 mv
Stella [2.4K]
Option C 100mv because the membrane goes from -70 mV to +30 mV. Thus, during the action potential, the inside of the cell becomes more positive than the outside of the cell.
6 0
2 years ago
Which of the following best describes why in general there are more hares in the ecosystem than foxes.
djverab [1.8K]

Answer:

<u>C</u>

Explanation:

The reason why there are more hares than foxes in the ecosystem is because if only 10% of the energy gets passed on to the next trophic level, then you need to have more lower level animals available to supports the animals higher up the food chain. The fox must eat several hares to gain enough energy for growth and development.

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2 years ago
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