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miss Akunina [59]
3 years ago
10

Why there are only 20 amino acids, although a amino acid is coded by a single codon with three bases. That means by permutation,

3*3*3=27 amino acids must exist ??? ...?
Chemistry
1 answer:
snow_lady [41]3 years ago
5 0
In nature there are many more variations amino acids than the simple 20 found in humans. However, when analyzing the human genome sequence, there is a code for all 64 permutations (4^3), only some of them share amino acids. This is a safe-guard against mutations of one or two nucleotides. For example, the amino acid Alanine is coded with four different nucleotide sequences: GCA, GCC, GCG, GCU. Also some amino acids code the same like UUU &UUC
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The presence of Catholicism in Australia in the late 1700s could be BEST explained by the increasing presence of A) Irish convic
defon

Answer:

Irish convicts

Explanation:

European explorers were familiar with Australia since the 1600s. However, they stepped their foot on infertile and dessert parts of the continent, so they showed no interest for this new land. Upon finding fertile land in eastern parts of the continent,  in the 1700s, James Cook claimed it a British land.  

Britain has just lost its colonies in America, so they decided to send men to this new land. However, they considered it infertile, lacking in resources and hard to live on, so they sent convicts, in, what will be known as the First Fleet, in 1788.  

Thus first contingent of ships carried around 1500 convicts, mostly Irish, with more than 100 000 convicts in the following years.

With them, Catholicism arrived in Australia, and later spread throughout the continent.

6 0
4 years ago
A student is making some observations of garlic. Which of these is NOT a qualitative observation?
OLga [1]
I believe it is D because it is giving data about the garlic while the other answers are observations of the garlic
5 0
3 years ago
Read 2 more answers
Convert 8.7 mg to ibs
rjkz [21]

Answer:

7

Explanation:

6 0
3 years ago
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6. What is the equilibrium constant for the following reaction?<br> C+02 = CO2
Orlov [11]
<h3>\tt Kc=\dfrac{[CO_2]}{[C][O_2]}</h3><h3>Further explanation</h3>

Given

Reaction

C+02 = CO2

Required

The equilibrium constant

Solution

The equilibrium constant is the ratio of concentration or pressure between the product and the reactant with each reaction coefficient raised  

The equilibrium constant is based on the concentration (Kc) in a reaction  

pA + qB -----> mC + nD  

\large {\boxed {\bold {Kc ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}

So for the reaction :

C+O₂ ⇔ CO₂

\tt Kc=\dfrac{[CO_2]}{[C][O_2]}

8 0
3 years ago
Name the following compound: <br> C5Si7
skad [1K]

Answer:

Pentacarbon heptasilicide.

Explanation:

In order to name the following compound, we need to identify whether it is molecular or ionic.

Molecular compounds consist of non-metal atoms, while ionic compounds would have metal cations in their composition.

In the given compound, C_5Si_7, we have two non-metals, carbon and silicon, meaning we should follow the molecular compound naming rules. The rules involve using prefixes to state the number of individual atoms.

The two prefixes required here are 'penta' for 'five' to indicate 5 carbon atoms present and 'hepta' for 'seven' to indicate 7 silicon atoms present.

The first part of the name would be pentacarbon (notice that the standard name for the first element is used). The second part would be heptasilicide (notice that the second atom would have an ending of -ide followed by the standard beginning of silicon).

4 0
3 years ago
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