Answer: nucleotides
Explanation:
The basic repeating unit of nucleic acids are known as nucleotides. A nucleotide consists of three distinct chemical groups, a 5-carbon sugar (ribose or deoxyribose), a nitrogen-rich base - (cytosine (C), guanine (G), adenine (A), thymine (T) in DNA or uracil (U) instead of T (in RNA), and phosphate.
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Answer:
B
Explanation:
Tolerable Upper Intake Level is the nutrient individuals in a group of the same age can take daily in an unquantifiable amount because it has no inimical effect
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Answer:
D) Endocrine system
Explanation:
In some cases, the nervous system directly stimulates endocrine glands to release hormones, which is referred to as neural stimuli.
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