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defon
3 years ago
6

Which of the following statements must be true in order for ATP synthase present in chloroplasts to function properly?

Biology
1 answer:
Agata [3.3K]3 years ago
7 0
<h3><u>Answer;</u></h3>

b. the pH of the stroma must be higher than the pH of the thylakoid lumen

<h3><u>Explanation</u>;</h3>
  • <em><u>Energy from an electron transport chain is used to actively transport protons from the stroma to the thylakoid lumen. Thus the lumen has a relatively higher proton concentration and therefore a lower pH than the stroma.</u></em>
  • Higher [H+] means lower pH, while Lower [H+] means higher pH. During the process of photosynthesis, the lumen becomes acidic, as low as pH 4, compared to pH 8 in the stroma.
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Scientists have successfully cloned animals, including mammals such as sheep. Which statement provides the most likely reason th
tigry1 [53]

Answer:

4) Some people consider human genetic experiments

unethical.

Explanation:

1) Humans have DNA that is structurally very different from

other mammals.

2) Cloning can only he performed on animals that normally

reproduce asexually.

3) Human genes are made of too many different types of

simple sugars.

4) Some people consider human genetic experiments

unethical.

The statement that provides the most likely reason that a human has not yet been cloned is that some people consider human genetic experiment unethical.

<em>Option 1 is incorrect because human DNA is similar in structure to other living organisms with components such as a phosphate group, a deoxyribose sugar and purine/pyrimidine bases.</em>

<em>Option 2 is incorrect because cloning is not limited to asexually reproducing organisms only. Sheep, for example, produces only sexually and has been successfully been cloned.</em>

<em>Option 3 is incorrect because human genes, just like every other organisms is consist of DNA with deoxyribose pentose sugar being one of the components. The situation of too many different types of simple sugars doe not arise.</em>

The correct option is 4.

6 0
3 years ago
What does a nucleotide consist of?
Lyrx [107]
a nitrogenous base, a sugar, and a phosphate. A nucleotide is the basic subunit of both DNA bad RNA. It contains a base with nitrogen, a 5-carbon sugar and a phosphate group.
6 0
3 years ago
Using your graph from page one, what type of water makes up the lowest percentage of Earth's waters?
balandron [24]

Answer:

Fresh Water

Explanation:

Salty water is the most abundant

6 0
3 years ago
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A method used by horticulturalists when they rotate the use of fields—planting crops on a particular piece of land for a period
svetoff [14.1K]

Answer:

The correct answer will be- Crop rotation

Explanation:

When the growth of a type of crop which uses soil nutrients in abundance and then growing another crop in the same filed led to the decrease in the production of the next crop.

Thus farmers adapted to avoid such farming practices and developed a new practice which allowed the land to become fertile again so that the growth of next crop will not be affected.

The practice involved the planting of a crop on a piece of land then leaving the soil ploughed and unsown for a longer period of time and growing corp on another piece of land allowing the time to restore the nutrient content. This practice is known as "crop rotation".

Thus, crop rotation is the correct answer.

8 0
3 years ago
Proteins are dynamic molecules that are capable of ________ motion that can have important functional relevance. The existence o
Inessa05 [86]

Answer:

intrinsic

Explanation:

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6 0
3 years ago
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