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jok3333 [9.3K]
3 years ago
15

During solstice, around june 21 each year, people in the northern hemisphere can except

Biology
1 answer:
Liono4ka [1.6K]3 years ago
6 0
They would expect only about 5 hours of darkness.
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Identify a signal the brain sends out after the nervous system sends the signal that pH has dropped.
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In response to a notification of a <u>decrease</u> in blood pH by the nervous system, the brain sends signals to the external intercostal muscles and the diaphragm.

<h3>What is blood pH?</h3>

Blood pH can be defined as a measure of the molar concentration of hydrogen ions that are present in the blood of a living organism, with respect to its acidity, neutrality or alkanlity (basicity).

In response to a notification of a <u>decrease</u> in blood pH by the nervous system, the brain would send signals (impulses) to the external intercostal muscles and the diaphragm through its respiratory center, so as to help the living organism increase its breathing rate and the volume of its lungs during inhalation.

Read more on blood pH here: brainly.com/question/11209525

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2 years ago
A chromosome that is exposed to a mutagen breaks into two pieces. A portion off one of the ends is removed before the two pieces
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The type of chromosomal mutation that occurs here is an example of a deletion mutation. Specific genetic data, or DNA is removed and the remaining portions of chromosomal information have rejoined.
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Azidothymidine (AZT) is one of the nucleoside analogs that is used in the treatment of AIDS as it inhibits the process of reverse transcription of HIV (Human immunodeficiency virus).

The HIV replicates by making DNA copies of RNA through the process of reverse transcription. The process is driven by enzyme reverse transcriptase. Azidothymidine (AZT) serves to inhibit the activity of reverse transcriptase enzyme and thereby does not allow HIV to reproduce.

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The model illustrates that the Sun’s gravity holds each planet in its orbit. Students in a science class were asked to revise th
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