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lesya [120]
4 years ago
14

Explain if an unknown substance found on a meteorite is determined to contain no trace of carbon, can scientists conclude that t

here is life at the meteorites origin
Biology
1 answer:
Svetach [21]4 years ago
5 0
All life as we know it is carbon-based, so what scientists could determine is that there is no carbon-based life at the origin of the meteorite. However, this does not necessarily mean that there is no life there; our knowledge is only based on our experiences of life on Earth, so it is possible that life has developed in other regions of space upon other elements and formations. For example, there could be life based on silicon or other chemical compositions. 
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Answer: True.

Explanation:

All the organism cells read the same genetic blueprint. So they all have the exact same DNA.

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3 years ago
The first organisms on Earth were able to transform the carbon dioxide in the air into what essential element needed for modern
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D. Oxygen  
We wouldn't be here without it
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How much percent does the earth contain if its plants and animals?
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Match the tissue with its primary fuel source: 1) brain A) fatty acids 2) resting skeletal muscle B) glucose 3) heart C) glucose
Dahasolnce [82]

Answer:

a) 1:B; 2:C; 3:A; 4:B; 5:C

Explanation:

Primary fuel source for tissues can be defind as the source of energy required for proper functioning of different tissues.

Brain consider glucose, a form of sugar to fuel cellular activities. Food provide glucose energy and through blood brain cell recieves the glucose.

Primary fuel source in resting skeletal muscle are glucose, fatty acids, amino acids that depends on the muscular activity and further participate in the citric acid cycle for oxidation to CO2.

Primary fuel of heart is fatty acids which carry important beta-oxidation equipment and serve as fuel for heart functions.

Glucose is the primary source of energy for adipose tissue which on breakdown contribute to ATP synthesis.

Liver utilises fatty acids, glucose and amino acids as primary fuel source.  When glucose is present in high quanity, it converted into fatty acids.

Hence, the correct option is a) 1:B; 2:C; 3:A; 4:B; 5:C

5 0
3 years ago
How does the central bank Control branch ​
11Alexandr11 [23.1K]

Answer:

Central banks control and manipulate the national money supply: issuing currency and setting interest rates on loans and bonds.

Explanation:

To ensure a nation's economy remains healthy, its central bank regulates the amount of money in circulation. Influencing interest rates, printing money, and setting bank reserve requirements are all tools central banks use to control the money supply.

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