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user100 [1]
2 years ago
10

Why is the sun always round but the moon has phases?

Biology
1 answer:
iren2701 [21]2 years ago
8 0

Answer:

because sun is a gas and any astroids that hit it melts

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PPLLLZZZZ HELP ME!!! I AM TIMED!! WILL REWARD!!!
kari74 [83]

the answer is :

1)Earth’s position

3)tectonic activity

4)volcanic activity

5)solar energy

6 0
4 years ago
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What kind of macromolecules are enzymes? and what is a substrate?
Over [174]
<h3>Answer:Enzymes are protein macromolecules. </h3>

Explanation:Proteins are large biopolymer molecules that are made up of repeating monomer units called amino acids.

3 0
4 years ago
Marco has experienced extreme fatigue (tiredness) lately. He eats three balanced meals each day and exercises 2-3 times per week
Kisachek [45]

Given the symptoms shown by Marcos, we can infer that the organelle that may be causing his problems is the mitochondria.

The mitochondria are one of the most famous and important organelle within a cell. Found in most eukaryotic cells, they are the organelle responsible for most of the energy production of a cell, and throughout the cells of the body, they become responsible for the energy production of the organism. This is the origin of its famous <em>"</em><u><em>Powerhouse of the cell</em></u><em>"</em> title. Mitochondria produce energy in the form of ATP.

ATP is a molecular compound necessary for most of the reactions that take place in a cell. It is so common as a requirement for any cellular activity that ATP is known as the "molecular currency". Marcos is said to be experiencing chronic fatigue, which is a symptom of mitochondrial disease. When the mitochondria of an organism's cells are not functioning as they should be, the cells do not have the energy needed to perform basic functions.

In reaction to this, the body sends signals to the brain to go to sleep, which minimizes energy consumption by slowing down the metabolic processes which require ATP and thus gives the body time to produce more energy. For these reasons, we can conclude that the fatigue and problems Marcos is experiencing are due to mitochondrial disease.

To learn more visit:

brainly.com/question/1563697?referrer=searchResults

8 0
3 years ago
In 1918, the Russian Tsar Nicholas II was deposed, and he and his family were reportedly executed and buried in a shallow grave.
Arte-miy333 [17]

Answer:

This can be evaluated with DNA test- by comparing the mitochondrial DNA (mtDNA)of the Tsar family with the woman-Anastasia. <u>Maternal DNA is inherited uninterrupted from generation to generation </u>

Explanation:

The living consort of Queen of Elizabeth ,Prince Philip, <u>is a grand nephew of Tsar Nicholas 11.</u> They  shared the same maternal ancestry.

Therefore, his   mitochondrial   must be maternal, and compatible with that of the Tsar Nicholar. Male children always inherit maternal mitochondria (mtDNA)and  passed from generations to generation.

T<u>he blood samples of prince Philip can be  taken, to extract the mtDNA,and matched  with the sample  of mtDNA obtained from the exhumed bodies of the Tsars,</u><u> </u>to reaffirmed the compatibility of the ancestry .  

If sample of the compatible mtDNA,  from price Phillip was compared with the mtDNA of the woman who claimed to be Anastasia, her claim can be validated.

Matched sample  shows she was the daughter, while negative result proves otherwise.

<em></em>

7 0
3 years ago
Walking through a forest you
butalik [34]

Answer:

D

Explanation:

D is really decomposing waste of anytime so I think that’s the answer.

5 0
3 years ago
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