Question 1
Clumps of microtubules in aging neurons are called
◦ beta amyloid.
◦ neurofibrillary tangles.
◦ neural atrophy.
◦ plaques.
◦ ganglionic fossae.
Question 2
During a human pregnancy, implantation occurs at which stage?
◦ zygote
◦ early cleavage
◦ blastocyst
◦ gastrula
◦ morula