Introduction to Biology Test TWO(I9-20)

Which of these is the main element found in organic molecules?

• oxygen

• carbon

• hydrogen

• nitrogen

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NGSS.HS-LS1-6

Why is carbon so basic to life?

• Carbon's ability to remain neutral and non-reactive to other substances.

• Carbon's ability to form stable bonds with many elements, including itself

• Carbon's ability to react quickly with many different substances releasing energy.

• Carbon's ability to be digested by all forms of life.

Which of these are types of organic compounds?

• proteins

• molecules

• carbohydrates

• lipids

• nucleic acids

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NGSS.HS-LS1-1

The small repeating units that make up carbohydrates are known as ____________________.

• monosaccharides

• polysaccharides

• monopeptides

• polypeptides

Which of these is the correct formula for Glucose

• C₁₂H₆O₁₂

• C₃H₁₆O₃

• C₆H₁₂O₆

• C₈H₁₆O₈

Tags

NGSS.HS-LS1-6

Complex carbohydrates have two main functions: what are they? (check two)

• storing energy

• forming structures of living things

• holding and duplicating genetic information

• providing a place for chemical reactions to occur

The cell walls in plants are made of this complex carbohydrate.

• chitin

• starch

• cellulose

• glycogen

A protein is an organic compound made up of small molecules called _______________________. 

• amino acids

• carbohydrates

• essential acids

• none of these

Tags

NGSS.HS-LS1-1

These proteins speed up chemical reactions.

• hemoglobin

• polypeptide

• enzymes

• antibodies

How many different types of amino acids exist in nature?

• 5

• 8

• 16

• 20

Tags

NGSS.HS-LS1-6