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larisa [96]
3 years ago
15

How did eukaryotic cells evolve prokaryotic cells?

Biology
1 answer:
Lera25 [3.4K]3 years ago
3 0

Answer:

The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes (endosymbiosis) is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.

Explanation:

Both mitochondria and chloroplasts are similar to bacteria in size, and like bacteria, they reproduce by dividing in two.

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Describe how the colors you see would change if you were to dive from the surface to down deep in the ocean. What would things l
Luden [163]

Answer:

Answer is below.

Explanation:

First of all, it would be much darker the deeper you go. On the surface, the light from the sun touches the ocean, making the ocean look like a light blue. However, if you dive down even deeper, you will find a darker blue, and later nothing (the sun won't touch the deep parts of the ocean, so all you would see is darkness). The short answer to this is: It's lighter around the surface, and darker the deeper you dive down into the ocean.

hope this helps

Brainly is appreciated :)

5 0
4 years ago
Which are example of active transportation across the cell membrane?
Kaylis [27]

Answer:

Explanation:

-Sodium-potassium pump (exchange of sodium and potassium ions across cell walls)

-Amino acids moving along the human intestinal tract.

-Calcium ions moving from cardiac muscle cells.

-Glucose moving in or out of a cell.

-A macrophage ingesting a bacterial cell.

8 0
3 years ago
How does a seed grow into a tree​
Leto [7]

Answer:

With the right environment (water, soil, temperature, sunlight), the plant will come from it's shell and begin to grow. As the plant begins to strengthen and grow, it will no longer need the nutrients that the seed provides as it will get it from the soil and grow into the plant it is supposed to

3 0
3 years ago
When an athlete eats more protein or amino acids than he or she needs, the extra amino acids are?
Rzqust [24]

When an athlete eats more protein or amino acids than he or she needs, the extra amino acids are either used in building the muscle tissues or are used in energy expenditure.

Proteins are the macromolecules composed of amino acid as polymers. Protein is an essential food component because it helps in the synthesis and repair of body parts, it help in growth and development, and also provides fuel to the body.

Muscle tissues are the ones responsible for the movement of the complete body. The tissues are rich in blood supply. They are of three categories: skeletal, cardiac and smooth. Any movement in body is possible only because of the contractions and relaxations of muscles.

To know more about muscle tissues, here

brainly.com/question/10737803

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4 0
2 years ago
1 Explain why animals depend on plants to keep them alive.
Gnoma [55]

1. Animals depend on plants to keep them alive is Plants are producers  they take energy from the sun, nutrients from the earth, and water to grow and have their flowers, seeds, and berries.

They also release oxygen, which all animals, including humans, need to stay. Animals are consumers and they all depend on plants for survival.

2. carbon dioxide and water reach the chloroplasts in leaves is Basically the roots consume the water and transports it up the xylem, which gets it to the leaves. Carbon dioxide contacts the chloroplasts in the leaves via a stomata

3. Two pieces of evidence that show that plants cannot make their own food without light. When plants lack light, they don't deliver chlorophyll (the green pigment in plants), and plants can turn pale green to yellow to white. Plant stems become “leggy,” meaning stems become long and thin and appear to be advancing toward the source of light.

  • The photosynthesis is the only method for synthesizing food. It is commonly believed that about 717.6Kcal energy is required to prepare just 10g of glucose. No energy input no metabolism and therefore no food.

<h3>How are leaves tested for starch?</h3>

The existence of starch in leaves can be tested by the Iodine test. When we remove chlorophyll from the leaf by cooking it in alcohol and then placing two drops of iodine solution, it is a color change to blue indicates the existence of starch.

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7 0
2 years ago
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