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borishaifa [10]
3 years ago
8

Which of the following microbes cannot reproduce unless it first infects a cell in a host organism?

Biology
1 answer:
ale4655 [162]3 years ago
7 0

Answer:

bacteria is a microbes and host organism

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Write out the steps in the Central Dogma. List where each step occurs in the cell. For each arrow, name the process that the arr
Triss [41]

Answer:

1. The Central Dogma refers to the molecular process by which the DNA is converted into proteins using RNA as intermediate, i.e., DNA (Transcription)-> RNA (Translation) -> Protein.  

2. Localization:

Transcription: within the cell nucleus (in eukaryotic organisms)

Translation: cytoplasm

3. Enzymes :

Transcription: RNA polymerase

Translation: Peptidyl transferase

Explanation:

Transcription is the process by which a segment of DNA (called gene) is used as template to synthesize a messenger RNA (mRNA) by using a specific RNA polymerase enzyme. During translation, this mRNA travels from the cell nucleus to the ribosomes in the cytoplasm, where this sequence (mRNA) is used as template to synthesize a protein. The ribosomes are organelles composed of ribosomal RNA (rRNA) molecules which direct the catalytic steps of protein synthesis, while transference RNAs (tRNAs) are molecules that act as adaptors which link the mRNA template with the corresponding amino acids being incorporated into the protein. The enzyme peptidyl transferase catalyzes the formation of peptide bonds between adjacent amino acids.

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An intact length of dna consists of 320 total nucleotides (160 nucleotides/strands). a total of 95 cytosine nitrogen bases are f
Elden [556K]

Answer:

65

Explanation:

The DNA segment has a total 95 cytosine bases. Since cytosine makes hydrogen bonds with guanine base, this means that the DNA segment has a total 95 guanine bases.

Total guanine + cytosine bases in the segment= 95 + 95 = 190

So, a total of adenine and thymine bases in the DNA segment= 320-190 = 130

Since the number of adenine and thymine bases are equal in a double-stranded DNA molecule, the number of adenine bases in the given segment would be= 130/2= 65

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3 years ago
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