Intro to Chemistry Quiz

Which atom or element is in almost all biomolecules?

• sulfur

• lithium

• carbon

• calcium

Molecules made from repeating units of identical or nearly identical compounds called monomers are called _____________ (look at your vocabulary definitions.)

• polymers

• macromolecules

• carbohydrates

• lipids

Which macromolecule is the central energy source for organisms because they provide glucose to the body?

• lipids

• amino acids

• nucleic acids

• carbohydrate

Nucleic acids are responsible for:

• giving quick energy to organisms

• speeding up chemical reactions

• storing genetic information

• controlling cell growth

Lipids/fatty acids are responsible for:

• giving quick energy to organisms

• storing energy & preventing water loss

• storing genetic information

• controlling cell growth

Amino acids are the monomers for which macromolecule/polymer?

• carbohydrate

• lipid

• protein

• nucleic acids

What subatomic particles would you find in the nucleus of an atom?

• Protons only
• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons 

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

What is an covalent bond?

• A chemical bond that involves sharing electrons
• A chemical bond that doesn't involve sharing electrons.
• A bond that is sciency
• A chemical bond that shares protons

When water and other liquids stick together to form drops or thin films called ________________.

• adhesion

• capillary action

• cohesion

• surface tension