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Artist 52 [7]
3 years ago
6

How does natural selection support the theory of evolution?

Biology
1 answer:
kicyunya [14]3 years ago
4 0
Ide say c is the best option here but i wouldent bank on my answer.
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One gene in the human genome may be expressed at a much higher level than another. Can differences in types of cis elements pres
Oksana_A [137]

Answer:

No, CREs usually don't account for differences in gene expression levels.

Explanation:

<em>Cis</em>-regulatory elements (CREs) are non-coding DNA regions that regulate adjacent gene <em>transcription</em>. They usually do it by binding to transcription factors. They are in charge of influencing the rate of which transcription occurs, and less with how much a gene is expressed. On the other hand, trans-regulatory elements are DNA sequences that encode for upstream regulators that can modify or regulate <em>gene expression levels</em>.

Therefore, cis elements are not really in charge of expression levels, mostly transcription rates of single genes, rather. Trans elements are more involved in expression levels.

3 0
2 years ago
Which of the following astronomical bodies or collection of astronomical bodies is likely to be a part of the others listed?
lesya692 [45]

Answer:

Sun

Explanation:

Sun is the only star in our solar system, and planets orbit around it. Our solar system is the part of Milky way (located in one of the outer bands of the Milky way), and the Milky way is the part of the Universe (Universe is made up of billions of galaxies, and Milky way is one of those galaxies). Hence, in the given options, the Sun is the part of all of the other options given.

7 0
2 years ago
Read 2 more answers
PORQUE ES IMPORTANTE QUE LA PERSONA TENGA UNA ESTABILIDAD EMOCIONAL, SOCIAL, ECONOMICA PARA PODER ENFRENTAR ANTE UNA SITUACION D
eduard

Answer:

Es importante que una persona tenga estabilidad emocional, social, y economica ante una situacion de embarazo para poder darle buena vida a el ser que lleva dentro.

Explanation:

Es importante tener estabilidad mental para pensar que hacer y como cuidar al bebe, y ser positvos.

Es importante tener estabilidad social para brindarle un ambiente amistoso.

Es importante tener estabilidad economica para poder aportar a las necesidades del bebe.

3 0
2 years ago
5. What is the difference between mitochondria and chloroplast?
FinnZ [79.3K]

Answer:

C. Mitochondria convert sugars into energy, while chloroplasts carry out

photosynthesis.

Explanation:

Chloroplasts have the ability to use light to convert carbon, derived from carbon dioxide into sugar. Mitochondria on their part break down simple sugars into carbon dioxide and release energy. Chloroplasts are larger and have greater complexity than mitochondria, and they have several critical functions to perform, besides the generation of ATP. Apart from converting carbon dioxide to carbohydrates they synthesize amino acids, fatty acids, and the lipid contained in their own membranes.

Mitochondria are to be found in both plant and animal cells, whereas chloroplasts are found only in plant cells. The former have a structure composed of a prokaryotic cell, whereas Chlorplasts are made up of stacks of thylakoids surrounded by a fluid called stroma. According to some theories, mitochondria exist because of endocytosis of aerobic bacteria, while chloroplasts are around because of the result of endocytosis of photosynthetic bacteria.

Chloroplasts exist only in plant cells and lend the green color of most plants. Mitochondria on the other hand are found in both animal and plant cells and are engaged in the production of ATP. To use simple layman language, mitochondria in animal cells changes energy into forms that animals can use, while chloroplasts in plant cells convert sunlight into energy that plants can use. From this it follows that mitochondria in a sense are the power plant in the animal cells, because it generates energy. Chloroplasts provide the green color to the plant due to the chlorophyll present in them.

Mitochondria cells are 1 to 10 um long in length. These can change shapes, get around, and divide into two. The cell is surrounded by an envelope of two membranes. The membrane on the outside is smooth while the other one is marked by what are called cristae.

Photosynthesis happens only in plants. This is because only plants contain chloroplasts. Thus we can see that mitochondria and chloroplasts are the building blocks of life for plants and animals respectively in the sense that they provide nourishment to the organisms. The two are also representative of the dividing line between the two kingdoms of life on earth-the animal and the plant.

These two structures are markers of two philosophies of life form if one may use the use the term. One that is self sustaining, manufacturing its own food, the other that is dependent upon the former as the primary source of food, but far more complex and evolved way of life in many other aspects.

4 0
2 years ago
Tasha went on a trekking expedition to a mountain range during her vacation. When she reached a particular height, it started ra
Aleksandr-060686 [28]
The sudden change in climate is as a result of the interaction of the atmosphere and the lithosphere. The heavy rains at high altitude are as a result of relief rainfall. The mountain acts as a barrier, causing the air to rise. Once air rises it cools and condenses. Cloud formation often leads to precipitation on the windward side of the mountain.  
8 0
3 years ago
Read 2 more answers
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