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vagabundo [1.1K]
2 years ago
14

60 points!!! plz help!!!

Biology
2 answers:
Vsevolod [243]2 years ago
6 0

Answer:

do u want me to draw lines or just tell u by itself

Sergeeva-Olga [200]2 years ago
6 0

rabbit ,grows thicker fur, to match it's surroundings

oak tree loses its leaves in winter,

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3. How would you date a sample of rock that you suspect as being one of the earliest on Earth? (1 point)
Kay [80]
<span>If I were attempting to date a rock sample that I suspect to be incredibly old, i would use radioactive isotopes with a long half life. When dating rocks and fossils to discover approximately how old they are, radioisotope dating is used on igneous rocks found near fossils. Things like Uranium 235, which is an unstable radioactive isotope of elements, decays at a constant rate over time so can be useful in determining age.</span>
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3 years ago
Highly potent toxins that are excreted by microorganisms, such as bacteria, and can cause damage to the host by destroying cells
Arlecino [84]

The answer is A. exotoxins, i got it right

7 0
3 years ago
Put the following steps in the correct order from 1-9
storchak [24]

Answer:

transcription of mRNA from DNA

small ribosomal subunit binds to mRNA

initiation complex formed with addition of large ribosomal subunit

translocation

codon recognition (non-initiating site)  

peptide bond formation

ribosome reads a stop codon

polypeptide chain is released from the P site

ribosomal subunits dissociate

Explanation:

The above describes the process of translation in the ribosome. After transcription of DNA to mRNA, the mRNA is taken to the ribosome to undergo translation, here the mRNA binds to the small ribosomal subuits and to other initiation factors; binding at the mRNA binding site on the small ribosomal subunit then the Large ribosomal subunits joins in.

Translation begins (codon recognition; initiating site) at the initiation codon AUG on the mRNA with the tRNA bringing its amino acid (methionine in eukaryotes and formyl methionine in prokaryotes) forming complementary base pair between its anticodon and mRNA's AUG start codon. Then translocation occurs with the ribosome moving one codon over on the mRNA thus moving the start codon tRNA from the A site to the P site, then codon recognition occurs (non-initiating site again) which includes incoming tRNA with an anticodon that is complementary to the codon exposed in the A site binds to the mRNA.

Then peptide bond formation occurs between the amino acid carried by the tRNA in the p site and the A site. When the ribosome reads a stop codon, the process stops and the polypeptide chain produced is released and the ribosomal subunits dissociates.

6 0
2 years ago
How many calories are in a large papa john pepperoni pizza?
dezoksy [38]
In a large Papa Johns pepperoni pizza there are 325 calories
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2 years ago
Assuming average nucleosome spacing throughout the genome, how many molecules of histone H2A are present in the chromatin of one
Mashcka [7]

Answer: Two molecules of H2A

Explanation:

Structural organization of nucleosomes were determined by isolating them from unfolded chromatin and it has been found that the basic units of chromatin are the nucleosomes which consist of histone octamers of two molecule each of histone H2A and other histone molecules like H2B, H3 and H4. The histones are wrapped around with 147bp of DNA in almost two (2) turns.

5 0
3 years ago
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