(Q).
Q: What do you call reversible changes that do not change matter's chemical makeup or chemical properties? Choices: - potential changes - element changes - chemical changes - physical changes A:
(A).
physical changes

(Q).
Q: How many possible alleles do the majority of human genes have? Choices: - three or more - two or less - less than four - two or more A:
(A).
two or more

(Q).
Q: What component of cells is present in plant and bacterial cells but not animal cells? Choices: - nucleus - plasma - mitochondria - cell wall A:
(A).
cell wall