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goldfiish [28.3K]
3 years ago
14

What are the definition of DNA and RNA

Biology
2 answers:
gayaneshka [121]3 years ago
7 0
Simple,

DNA: Deoxyribonucleic Acid

RNA: Ribonucleic Acid
sasho [114]3 years ago
6 0

DNA has two strands

RNA has one

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Match the nerve with examples of parasympathetic effector organs it innervates
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Answer and explanation;

1) CN III (Oculomotor) -Ciliary muscles

2) CN VII (Facial) -Lacrimal glands

3) CN X (Vagus)  -Thoracic and abdominal viscera

4) Pelvic Splanchnic Nerves -Most pelvic viscera

Explanation;

The oculomotor nerve is the third of 12 pairs of cranial nerves in the brain. This nerve is responsible for eyeball and eyelid movement.

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Vagus nerve; Stimulates voluntary muscles that effect swallowing, coughing and speech (conscious control).Stimulates the contraction and relaxation of smooth muscle in the gastrointestinal tract. (unconscious control).


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3 years ago
Choose the answer that best completes the sentence below
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A factor that is necessary for the formation of a new species is
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