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Agata [3.3K]
3 years ago
14

The key element found in compounds?​

Biology
2 answers:
Alex Ar [27]3 years ago
6 0

The most common elements present in organic compounds are carbon, hydrogen, oxygen, and nitrogen.

Arisa [49]3 years ago
6 0

Answer:

carbon dioxide CO2 carbon (C) and oxygen (O)

sodium chloride NaCl sodium (Na) and chlorine (Cl)

sodium hydroxide NaOH sodium (Na), oxygen (O) and hydrogen (H)

calcium chloride CaCl2 calcium (Ca) and chlorine (Cl)

Explanation:

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Why does DNA change from one generation of species to the next? Explain the two reasons. (be sure to include the concept of RAND
pogonyaev

Answer:

RANDOM SPECIES

Explanation:

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6 0
3 years ago
Suppuration, often caused by invasive strains of Staph aureus, is:
RideAnS [48]
I’m not sure but I think the answer is B or D
8 0
3 years ago
Classify each RNA post-transcription processing event according to whether it occurs in prokaryotes or eukaryotes.
tigry1 [53]

'RNA is transcribed and translated in the cytoplasm', 'transcription produces an mRNA ready for translation' and 'RNA is proofread for errors' occur in prokaryotes, whereas '5′ cap, 3' poly-(A) tail and RNA splicing' occur in eukaryotes.

The prokaryotic cells (e.g., bacterial cells) do not contain cell nuclei, thereby the messenger RNA (mRNA) must be transcribed and translated in the cytoplasm.

During prokaryotic transcription, the RNA transcript is proofread for errors. In bacteria, DNA polymerases proofread the transcript by using their 3’ → 5’ exonuclease activity.

In eukaryotic cells, RNA processing consists of several mechanisms:

  • A 7-methylguanosine cap (5′ cap) is added to the 5′ end of the precursor messenger RNA (pre-mRNA).

  • A 3' poly-Adenine (A) tail is added to the 3' end of the pre-mRNA.

  • Both the 5′ cap and 3' poly-(A) tail protect the RNA transcript from its degradation by exonucleases.

  • Eukaryotic RNA splicing consists of the removal of non-coding regions called 'introns' and subsequent splicing of the protein-coding regions called 'exons'.

Learn more in:

brainly.com/question/24415778

7 0
2 years ago
A : chromatid<br> b : centroemere<br> c : single strand chromosome<br> d : double strand chromosome
Anton [14]

d: double strand chromosome

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Is any skin growth, such as a callus, in which there is overgrowth and thickening of the skin.
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