Give IUPAC names for all alkyl groups marked by dashed lines in each of the following biologically important compounds. Identify each group as a primary, secondary, or tertiary alkyl substituent.

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На CH2 HCCH CH2 CH CH2 CHs CH2CH CH CH3 CH, I H3C CH CH3 Cholesterol A steroid) CH3 HO но CH2 CH3 CH3 CH3 CH-CH-CH-CHCH-CH-CH-CHCH-CH-CH-CHCHy но CH3 Vitamin E Vitamin D4 H3C CH3 i CH3i H3C CH2 NH2 CH CO-H NH2 CH CO2H NH2 CH CO H Leucine Isoleucine Valine (Another amino acid) Still another amino acid) (An amino acid)