(Q).
Q: How many types of mechanical waves are there? Choices: - five - nine - one - three A:
(A).
three

(Q).
Q: What continuously monitors and repairs its genetic material? Choices: - ova - nucleolus - proteins - cells A:
(A).
cells

(Q).
Q: During photosynthesis what organelle is used by plants to change sunlight into chemical energy? Choices: - mitochondria - golgi apparatus - ribosome - chloroplasts A:
(A).
chloroplasts