1. which statement regarding gel electrophoresis is true? a) the larger the dna fragments, the slower they travel through the gel b) the larger the dna fragments, the faster they travel through the gel c) the higher the ph, the faster the dna fragments travel through the gel d) the lower the ph, the slower the dna fragments travel through the gel 7. which gene would a crop scientist most likely insert into a crop to protect it from droughts and insects? a) increased yield and freeze resistance b) heat resistance and pest resistance c) freeze resistance and heat resistance d) pest resistance and freeze resistance 24. which process releases the highest amount of energy? a) aerobic respiration b) anaerobic respiration c) photosynthesis d) protein synthesis 28. which cell is undifferentiated? a) sperm cell b) stem cell c) kidney cell d) red blood cell 29. in a laboratory setting, embryonic stem cells can differentiate into which types of cells? a) any cell from the same organism b) any type of eukaryotic cell c) any type of prokaryotic cell d) any cell from a different organism 30. a technique used in forensic science, genetic manipulation, and agrimedicine to amplify or make more genetic material is: a) crispr cas9 b) genomic mapping c) polymer chain reaction (pcr) d) vector insertion