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ArbitrLikvidat [17]
3 years ago
15

Which of the following statements about asteroids is true? Asteroids are all very large and are mostly made up of stone, iron an

d nickel. Asteroids are all very large and are mostly made up of frozen water and gas. Asteroids vary greatly in size and are mostly made up of frozen water and gas. Asteroids vary greatly in size and are mostly made up of stone, iron and nickel.
Biology
2 answers:
Rufina [12.5K]3 years ago
5 0

Answer:

d

Explanation:

I just took the test

GuDViN [60]3 years ago
3 0
Asteroids vary greatly in size and are mostly made up of frozen water and gas. This one is true. They are said to be "mostly formed of ice and gas" as they rarely can be found consisting of stone, nickel and iron. These are extremely dangerous in our Universe.
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Answer:

At the bottom you have the producers aka auto trophic livings (which use inorganic compounds to grow, produce energy, matter and so on..). These organisms would be plants, Cyrano bacteria, over all any organisms that do photosynthesis.

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2.Why do introduced species often disrupt an ecosystem?
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Introduced species

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1 year ago
The enzyme ??? breaks down the sugar ???.
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huh?

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What peptide would be made by translation from a synthetic mRNA made of the repeating dinucleotide CGCG…?
RSB [31]

Answer:

The question lacks options, the options are:

A. a polymer of arginine plus a polymer of alanine

B. the peptide Met–Arg–Ala–Arg–Ala…

C. a polymer of alanine: Ala–Ala–Ala…

D. a peptide containing alternating arginines and alanines

E. a polymer of arginine: Arg–Arg–Arg…

The answer is D

Explanation:

Translation is the second process of protein synthesis (gene expression) where the mRNA molecule produced during transcription is used as a template for the synthesis of amino acid sequences, which species a particular polypeptide.

The nucleotides in the mRNA are read in a group of three in the ribosome. This triplet nucleotide is called CODON. Each codon specifies a particular amino acid and a collection of all codons constitutes the GENETIC CODE. Hence, in a case where dinucleotide CG is repeated in a sequence. The sequence will read:

CGC GCG CGC GCG CGC GCG..........

In the genetic code, codon CGC and GCG codes for arginine and alanine amino acids respectively. Therefore, if the CG dinucleotide keeps repeating, the nucleotides will be read three at a time, and the amino acid sequence will alternate between those two amino acids (Arginine and Alanine).

So we would have a peptide sequence looking like:

Arg-Ala-Arg-Ala-Arg-Ala-Arg...........

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3 years ago
which statement are true of any saturated solution at a given temperature? A. No more solute will dissolve in the solution B. Ad
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Answer:

I believe the answer is B

Explanation:

It can't be D tho

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