Lipids & Nucleic Acids Quiz

Which of the following are functions of lipids?

• long term energy storage

• short term energy storage

• waterproof (waxy) coatings

• component of membranes

• insulation

Plant species such as the sesame plant and the coconut palm have large amounts of lipids in their seeds. Which of the following is the most likely function of these lipids?

• to store energy for the seedlings

• to absorb water for the seedlings

• to encode most of the genetic information in the seedlings

• to speed up most of the chemical reactions in the seedlings

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NGSS.MS-LS1-7

DNA and RNA are composed of nucleotides that contain the following, EXCEPT

• a sugar, either deoxyribose or ribose

• a phosphate group

• an amino acid complex

• a nitrogenous base (A, T, C, G, or U)

Which of these are the repeating units that form a DNA and an RNA molecule?

• Fatty Acids

• Nucleotides

• Amino Acids

• Glucose

Compounds that are waxy or oily would be classified as

• carbohydrates

• 
  nucleic acids

• 
  lipids

• 
  amino acids

Cholesterol, a type of steroid, belongs to which category of organic molecules?

• carbohydrates

• lipids

• nucleic acids

• proteins

What is the primary structural form of DNA?

• Double helix

• Beta sheet

• Alpha helix

• Triple helix

Answer explanation

Nucleic acids, such as DNA, are best described as a double helix structure, consisting of two intertwined strands. This unique shape is crucial for their function in storing and transmitting genetic information.

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DOK Level 1: Recall

Which biomolecule is primarily responsible for storing genetic information?

• Proteins

• Lipids

• Carbohydrates

• Nucleic acids

Answer explanation

Nucleic acids, such as DNA and RNA, are the biomolecules that store and transmit genetic information. They contain the instructions needed for the development and functioning of living organisms.

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DOK Level 1: Recall

 The phospholipids that make up the lipid bilayer of a cell membrane have a head region that interacts with water, this means the heads are...

• hydrophillic

• hydrophobic

The phospholipids that make up the lipid bilayer of a cell membrane have a tail region that does NOT interact with water, this means the tails are...

• hydrophillic

• hydrophobic