Making a goal too challenging will motivate you to work harder.

True
False

Marijuana is an example of a(n) drug

Iwill mark you brainlest if you answer this question

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)