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eduard
3 years ago
7

What structure holds chromatids together in double stranded chromosomes? What are they known as

Biology
1 answer:
kozerog [31]3 years ago
3 0

The two chromatids of a duplicated chromosome are held together at a region of DNA called the centromere. Centromeres are the attachment points for microtubules, which are responsible for the guiding the movement of chromosomes during mitosis and meiosis.

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How might the study of meteorites help astronomers determine the origin of meteoroids?
olganol [36]

Answer:

Through the study of meteorites, their chemical composition of silicates—material made of silicon and oxygen. Others contain metal—nickel and iron. Knowing what the meteorite was composed of lets you know where it came from. Chondrites are composed of hardened lava - this is occurred at the beginning of the solar system (4.5 mya). Carbonaceous chondrites contain carbon and water which formed away from the sun.

Explanation:

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3 years ago
Insulin increases glucose transport across the cell membrane of an adipocyte but not across the membrane of a liver cell. How ca
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7 0
3 years ago
As you study two closely related predatory insect species, the two-spot and the three-spot avenger beetles, you notice that each
AVprozaik [17]

Answer:

d. Character displacement

Explanation:

Character displacement is the phenomenon in which the similar species living in the same geographical region with similar niches differentiate in order to reduce their niche overlap and avoid competitive exculsion. Just like in this case of two- spot and three -spot avenger beetles as their timmings for hunting is different where their ranges overlap. So it's the good example of character displacement,

8 0
3 years ago
Read 2 more answers
Where is the best place to live to avoid the problems caused by<br> climate change and why?
Helen [10]
In the us- Anchorage, Alaska because the natural environment is far more resilient to a major weather event than a large city setting and can better adapt to changing sea levels or temperatures. With less people and man-made infrastructure, there are fewer things to be maintained in the area, allowing the wilderness to react naturally to changing weather patterns and climate.
outside the us- Denmark because the country has continued to make strides forward, in air quality in particular. On the previous report, 78.8% of the population was exposed to unsafe levels of fine particle air pollution; now, the figure has dropped to 56.9%. Denmark tops the list of countries doing the most to protect the environment, among them having at least half its energy consumption come from renewables by 2030 and to be independent of fossil fuels by 2050.
5 0
2 years ago
What happens in photosystem II?
netineya [11]
<h2>Answer:</h2>

The correct answer is option A which is, "Electrons are re-energized to be used in NADPH production".

<h3>Explanation:</h3>

In photosystem II, light energy is used to split water molecules which release electrons.

These electrons then move to photosystem I to reduce NADP to NADPH.

Hence electrons in photosystem II are ultimately used to produce NADPH and option C is the correct statement.

4 0
3 years ago
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