Pharmacy Curriculum Outcomes Assessment (PCOA) Practice Exam

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In healthy humans, how many chromosomes does a haploid cell contain?

The correct answer is: 23

A haploid cell contains half the genetic material of a normal cell, so a haploid cell in a healthy human would contain 23 chromosomes. Option A, 46, is incorrect because this is the number of chromosomes in a diploid cell. A diploid cell contains both sets of chromosomes - one from each parent. Option C, 22, is incorrect because this is the number of autosomes (non-sex chromosomes) in a diploid cell. Option D, 44, is incorrect because this is the number of total chromosomes in a diploid cell minus the two sex chromosomes. In a diploid cell, there would be 46 chromosomes and only two sex chromosomes, resulting in a total of 44 chromosomes. Therefore, option B, 23, is the correct answer.