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FinnZ [79.3K]
3 years ago
8

Which two types of matter are chemical pure substances

Biology
1 answer:
Leya [2.2K]3 years ago
6 0

Answer:

element and compund

Explanation:

an element is the most basic substance that cannot be decomposed into anything simpler

an compound is a substance that is formed when two or more elements combine in constant ratio chemically

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Hydrolysis of which molecule is important for translation initiation, elongation, and termination?
abruzzese [7]

Answer:

D. GTP

Explanation:

Initiation of protein synthesis includes binding of mRNA to small ribosome subunit and initiation aminoacyl tRNA. The pairing of the anticodon of the initiating aminoacyl tRNA and initiation codon of mRNA requires GTP hydrolysis and marks the beginning of protein synthesis.  

Elongation stage of protein synthesis requires movement of the ribosome along the mRNA which in turn is facilitated by GTP hydrolysis. As the ribosome moves along the mRNA, the codon of mRNA bind to the respective anticodon of aminoacyl tRNA by using the energy of GTP hydrolysis. The GTPase activity of elongation factor Ef-Tu ensures the fidelity of the process.  

The release factors that recognize the stop codon and serve to mark the termination of protein synthesis use the energy of GTP hydrolysis during the process.

4 0
3 years ago
What can be combined to form various substances
zlopas [31]

Answer:

Atoms of different elements can combine to make new substances. A molecule is formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound.

Explanation:

4 0
3 years ago
Which of the following are true in prokaryotic cells?
Shtirlitz [24]

Answer:

have DNA, but are NOT large or complex

Explanation:

4 0
3 years ago
Which expression best illustrates the idiosyncratic nature of stress?
solniwko [45]
Idiosyncrasy means unusual or odd. It is used to show peculiarity. Thinking of stress usually means something negative thus would lead to giving the wrong impression of it's nature. Stress would only mean a reaction to a demanding or sometimes a changing environment. In the following idioms, the best expression would be "beauty is in the eye of the beholder" which means not all people have the same opinion on what is beautiful or attractive that means if correlate with stress it is up to the person on how he or she view stress,may it be a negative one or a positive one.
5 0
4 years ago
The concentration of gas particles inside the beach ball (increase/decrease) when deflating.
Elodia [21]

Answer:

When gas molecules are warmed, their average kinetic energy also increases. This means they move faster and have more frequent and harder collisions inside of the balloon.

Explanation:

4 0
3 years ago
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