ACT science prep biology, chemistry, physics Questions and Answers Update 2026/2027

ACT science prep (biology, chemistry, physics) Questions and Answers Update 2026/2027

Gametes ✔✔sex cells
Gene ✔✔Combination of alleles
Allele ✔✔Piece of a gene
ATP ✔✔energy
amino acids ✔✔proteins
Starch ✔✔Sugar
Endotherms ✔✔warm blooded
Ectotherms ✔✔cold blooded
Radiation ✔✔Energy transmitted without contact between objects (usually in rays, waves, or particles)
Convection ✔✔Energy transferred through fluids
Conduction ✔✔energy transferred by direct contact of two objects
Osmosis ✔✔Water moves to equalize concentration
hypertonic solution ✔✔More concent solution
hypotonic solution ✔✔Less concent solution
isotonic solution ✔✔Two solutions with same concentration
dominant allele ✔✔capital letter in Punnett square
recessive allele ✔✔lowercase letter in Punnett square
Heterozygous ✔✔Two different alleles (ex. Tt)
Homozygous ✔✔two of the same alleles (ex. TT or tt)
Vertebrates ✔✔have a backbone
invertebrates ✔✔no backbone
Freezing point of water ✔✔0 degrees Celsius and 32 degrees Fahrenheit
boiling point of water ✔✔100 degrees Celsius and 212 degrees Fahrenheit
Solubility ✔✔the ability of one substance to dissolve in another
Acidic pH ✔✔less than 7
Basic pH ✔✔greater than 7