Bio Unit 1 Review: Chemistry of Life

When is an ionic bond formed?

• when electrons are shared

• when protons are shared

• when oppositely charged atoms gain or lose electrons

• when oppositely charged atoms gain or lose a proton

What are the smallest basic units of matter?

• molecules

• atoms

• elements

• 7th graders

Tags

NGSS.HS-PS1-7

Which of the following solutions has the highest Hydrogen ion concentration?

• a solution with a pH of 1

• a solution with a pH of 4

• a solution with a pH of 7

• a solution with a pH of 10

Atoms that share electrons are

• in a covalent bond

• in an ionic bond

• are usually salts

• always metals

What are the 4 types of carbon-based molecules in organisms?

• carbohydrates, lipids, fatty acids, and monomers

• polymers, monomers, acids, bases

• adhesion, cohesion, evaporative cooling, and high specific heat

• nucleic acids, proteins, lipids, and carbohydrates

What are proteins made of?

• amino acids

• monosaccharides

• nucleic acids

• fatty acids

Tags

NGSS.HS-LS1-6

Which carbon-based molecule includes sugar and starches?

• carbohydrates

• lipids

• proteins

• nucleic acids

Tags

NGSS.HS-LS1-6

What is the primary function of DNA?

• to make nucleic acids

• long term energy storage

• store genetic information

• to function as RNA

What is happening in this picture?

• an enzyme is binding a substrate together to form a product

• an enzyme is breaking down a substrate to release new products

• the active site of the enzyme does not fit the substrate

• a change in pH has damaged the enzyme

Large bodies of water, such as lakes and oceans, do no quickly fluctuate in temperature. What is the reason behind this phenomenon? 

• Water is an acid

• Water has a high heat capacity

• Water is a universal solvent

• Water acts as a base

Tags

NGSS.HS-ESS2-5