Question

21 multiple choice 1 point which diagram correctly represents the repeating subunit of a nucleic acid? 22 multiple choice 1 point a person is experiencing muscle pain and hair loss and has ridges in the fingernails and toenails. based on these symptoms, which biomolecule should be increased in the persons diet to resolve the issues? 23 multiple choice 1 point the table describes the identities, components, and functions of four major classes of biological molecules, with some of the information missing. what type of molecule is indicated by the letter w? 24 multiple choice 1 point why are lipids important for organisms?

Explanation:

• Question 21: Nucleic acids are composed of nucleotides, which consist of a phosphate group (P), a sugar, and a nitrogen - containing base. The first diagram represents a nucleotide, the repeating subunit of nucleic acids.
• Question 22: Proteins are the structural basis of muscles, hair, and nails. A deficiency in proteins can lead to muscle pain, hair loss, and nail ridges.
• Question 23: Nucleic acids are made up of nucleotides and carry hereditary genetic information. Examples are DNA and RNA.
• Question 24: Lipids store energy and are components of waterproof coverings (such as cell membranes and waxes on plant surfaces).

Answer:

1. The first diagram (with P, sugar, and nitrogenous base)
2. Proteins; they are the structural basis of muscles, hair, and nails.
3. nucleic acids
4. They store energy and are components of waterproof coverings.