Chapter 3 Biology

In an atom, the number of ____, identifies an element.

• protons

• neutrons

• electrons

• nucleons

Which of the following features is NOT shown by the chemical formula.

• Types of elements

• Number of molecules

• Number of atoms of each element

• the way atoms are put together

RNA is a type of

• amino acid

• protein

• nucleic acid

• fatty acid

The element that is the most important in building the backbone of organic compounds is

• carbon

• hydrogen

• nitrogen

• oxygen

Tags

NGSS.HS-LS1-6

The formula for a molecule of Carbon Dioxide CO_{2 indicates a total of}

• twelve atoms

• six atoms

• four atoms

• three atoms

• two atoms

Tags

NGSS.MS-PS1-1

Glucose and Fructose are examples of

• polymers

• amino acids

• isomers

• lipids

• isotopes

Which pair of words are related in the same way as : atom- element

• electron - nucleus

• proton- energy level

• molecule- compound

• proton- electron

• atom- nucleus

Which pair of words are related in the same way as: structural formula - organic compound

• electron- proton

• water- H₂O

• isomer- organic molecule

• plans - house

• carbon- hydrogen

Tags

NGSS.HS-LS1-6

Which type of monomer is a long chain with a COOH group on the end.

• nucleic acids

• monosaccharides

• fatty acids

• amino acids

• carbohydrates

Fatty acids are unsaturated when

• They have an NH attached

• They have a single bonded CH chain

• They have a double bond on the COOH

• They have a double bond in the CH chain.