Biochemistry

Proteins, starch, and DNA are similar in that they are all

• organic compounds

• parts of genes

• made of amino acids

• made of simple sugars

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NGSS.HS-LS1-1

Which group consists entirely of organic molecules?

• protein, oxygen, fat

• protein, starch, fat

• water, carbon dioxide, oxygen

• water, starch, protein

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NGSS.HS-LS1-6

Which of the following is not one of the main classes of macromolecules within cells?

• Carbohydrates

• Proteins

• Nucleic acids

• Water

The two diagrams below represent a sugar molecule and a fat molecule that are used by living organisms.Which statement best describes these two molecules?

• Sugar molecules are inorganic and fat molecules are organic

• Sugar molecules are organic and fat molecules are inorganic.

• Energy for life processes can be stored within the chemical bonds of both molecules.

• Energy for life processes can be stored within the chemical bonds of sugar molecules, only.

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The building blocks for this molecule are

• amino acids

• simple sugars

• fats

• molecular bases

Base your answer on the information in the diagram below and on your knowledge of biology.

In an autotrophic organism, substance B functions as a

• source of energy

• hormone

• vitamin

• biotic resource

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NGSS.HS-LS2-3

Base your answer on on the chart below and your knowledge of Biology.In which section of the chart do the substances starch and glycogen belong?

• A

• E

• C

• I

Base your answer on the diagram below. For each of the following phrases, select the molecule, chosen from those shown below, which is best described by that phrase. An example of a carbohydrate

• 1

• 2

• 3

• 4

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What is another characteristic of the compounds in class D?

• They are composed of basic subunits known as nucleotides

• They contain the atoms carbon, hydrogen, and oxygen, with the hydrogen and oxygen in a 2:1 ratio.

• They transfer amino acids to ribosomes during protein synthesis.

• They include chemical compounds such as insulin and hemoglobin.

In plants, a storage product that results from the dehydration synthesis of many glucose molecules is

• protein

• a phosphate

• an oil

• starch

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NGSS.HS-LS1-6