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Mama L [17]
3 years ago
7

What is a consequence to the organism if helper-t cells are destroyed by a pathogen, such as HIV?

Biology
1 answer:
dedylja [7]3 years ago
8 0

the immune system wouldn't be able to signal B cells to produce antibiotics and the T cells wouldn't be able to kill infected cells that are targeted.

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Explain why scientirsts concluded that the instructions for species characteristics were carried in DNA.
siniylev [52]

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Explanation:

Deoxyribonucleic acid is said to contain instruction for species characteristics because it carries the information that characterize an individual.

DNA are made up of Nitrogenous bases that are unique codes specify by an individual and no two person has the same the DNA.

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3 years ago
When a warm front is approaching, what happens?
andreev551 [17]

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Rom4ik [11]

Answer:

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A geneticist isolates a gene for a specific trait under study She also isolates the corresponding mRNA Upon comparison, the mRNA
olga nikolaevna [1]

Answer:

C) no, the final mRNA contains only exons, the introns were removed

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