HESI A2 Biology Exam Knowledge Check with complete and Verified Solutions | Latest 2025/2026 Update.

HESI A2 Biology Exam Knowledge i,- i,- i,- i,- i,-




Check with complete and Verified i,- i,- i,- i,- i,-




Solutions | Latest 2025/2026 Update. i,- i,- i,- i,-




What is cohesion?
i,- i,- the ability of a molecule to stay bonded or i,-i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-



attracted to another molecule of the same substance
i,- i,- i,- i,- i,- i,- i,-




what is adhesion?
i,- i,- the ability of a molecule to bond or attract
i,-i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-



other molecules or substances
i,- i,- i,-




what occurs when water freezes?
i,- i,- i,- i,- i,-i,- i,- lattice crystal is formed, i,- i,- i,- i,-



molecules spread apart i,- i,-




what are the most important biological molecules?
i,- i,- i,- i,- i,- i,- i,-i,- i,-



carbohydrates, lipids, proteins, nucleic acids i,- i,- i,- i,-




what are carbohydrates?
i,- i,- i,-i,- i,- generally long chains or polymers of i,- i,- i,- i,- i,- i,-



sugars


what are the most important functions of carbohydrates?
i,- i,- i,- i,- i,- i,- i,- i,-i,- i,-



storage, structure, energy
i,- i,-

,what is DNA short for?
i,- i,- i,- i,- i,-i,- i,- dioxyribonucleic acid i,-




what is RNA short for?
i,- i,- i,- i,- i,-i,- i,- ribonucleic acid i,-




what forms the backbone of DNA and RNA?
i,- i,- i,- i,- i,- i,- i,- i,-i,- i,- sugar-
phosphate backbone i,-




what is another term for fats?
i,- i,- i,- i,- i,- i,-i,- i,- lipids


what are the types of lipids?
i,- i,- i,- i,- i,- i,-i,- i,- fatty acids, phospholipids,
i,- i,- i,-



steroids


what are the two types of fatty acids?
i,- i,- i,- i,- i,- i,- i,- i,-i,- i,- saturated and i,- i,-



unsaturated


what is significant about saturated fat?
i,- i,- i,- i,- i,- i,-i,- i,- no double bonds in
i,- i,- i,- i,-



their hydrocarbon tail
i,- i,-




what is significant about unsaturated fat?
i,- i,- i,- i,- i,- i,-i,- i,- one or more i,- i,- i,-



double bonds in their hydrocarbon tail
i,- i,- i,- i,- i,-

, is saturated fat liquid or solid at room temperature?
i,- i,- i,- i,- i,- i,- i,- i,- i,-i,- i,- solid


is unsaturated fat liquid or solid at room temperature?
i,- i,- i,- i,- i,- i,- i,- i,- i,-i,- i,- liquid


what are cardiovascular problems associated with?
i,- i,- i,- i,- i,- i,-i,- i,- diets i,-



containing high quantities of saturated fats i,- i,- i,- i,- i,-




what are phospholipids?
i,- two fatty acids of varying lengths
i,- i,-i,- i,- i,- i,- i,- i,- i,- i,-



bonded to a phosphate groupi,- i,- i,- i,-




what part of a phospholipid is charged and uncharged?
i,- i,- i,- i,- i,- i,- i,- i,- i,-i,- i,-



phosphate head - charged i,- i,- i,-




hydrocarbon tail - uncharged i,- i,- i,-




is the phosphate head of a phospholipid water-soluble or not?
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-i,-



it is water-soluble
i,- i,- i,-




is the hydrocarbon tail of a phospholipid water-soluble or not?
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-i,-



it is not water-soluble
i,- i,- i,- i,-




what are phospholipids important for?
i,- i,- i,- i,- i,-i,- i,- formation of cellular i,- i,- i,-



membranes