Question

1. alzheimers disease is characterized by:

pre-senile dementia
mental hyperactivity
pre-senile paranoia
mental acuity

1. rachio- means:

spine
saucer
foot instep
jointed or dried

Explanation:

• Alzheimer's disease is a type of dementia that typically affects the elderly, but can also occur in younger adults (pre - senile dementia). Mental hyperactivity is not a characteristic of Alzheimer's. Pre - senile paranoia is not the main defining feature. Mental acuity (sharpness of mind) is the opposite of what is seen in Alzheimer's.
• The prefix "Rachio -" is related to the spine. "Saucer" has no etymological connection to "Rachio -". "Foot instep" is not related. "Jointed or dried" is also not the correct meaning for this prefix.

Answer:

1. pre - senile dementia
2. spine