Dan jumps rope once a week at 65%-85% of his maximum heart rate for 10 minutes. If Dan wants to improve his cardiorespiratory endurance, what part of
his workout will he need to increase?

Group of genes that encode molecules found in all body cells, creating a biochemical “fingerprint” that serves as the “id” for cells so that they are marked as “self” a) deoxyribonucleic acid (dna) b) entry inhibitors c) major histocompatibility complex (mhc) d) non-nucleoside reverse transcription inhibitors (nnrtis)