Unit 2.1 Chemistry of Life (Carbs)

Which is NOT one of the macromolecules that make up the cells of living things?

• sulfur

• carbohydrates

• nucleic acids

• lipids

What does "organic" mean in biology?

• contains oxygen

• contains carbon

• do not contain carbon

• do not contain pesticides

Why is carbon an important building block for organic macromolecules?

• a carbon atom can form up to FOUR chemical bonds

• it is only found in living things

• it can form double bonds

• solid carbon is highly unstable and reactive

Tags

NGSS.HS-LS1-6

What is a MONOMER?

• long chain of interconnected polymers

• giant organic molecule

• macromolecules

• small subunit or "building blocks" that join to form polymer

What is the monomer of carbohydrates?

• monosaccharide (a sugar)

• polysaccharide

• fatty acid

• amino acid

Which of the following is a monosaccharide?

• glycogen

• glucose

• sucrose

• cellulose

Long chains of monosaccharides like these glucose molecules form ?

• triglycerides

• polypeptides

• nucleic acids

• polysaccharides (like starch)

How do plants store excess sugar?

• glycogen

• plant starch

• cellulose

• chitin

Plant cell walls (fiber) is made of polysaccharide called?

• starch

• glycogen

• cellulose

• triglyercide

A _____ substance contains an unequal distribution of charge (+ and -) within a molecule.

• nonpolar

• polar

• balanced

• charged