Answer:
Beta-amyloid is a metabolic waste product that’s found in the fluid between brain cells (neurons). A build-up of beta amyloid is linked to impaired brain function and Alzheimer’s disease. In Alzheimer’s disease, beta-amyloid clumps together to form amyloid plaques, which hinder communication between neurons. Impaired sleep has been associated with Alzheimer’s disease. Lack of sleep has been shown to elevate brain beta-amyloid levels in mice
Answer:
The correct answer would be 37.
Egg or sperm or gametes are cells produced by the process of meiosis and carry half the number of chromosome (n) present in a parental cell (2n).
Meiosis is a type of cell division which results in the formation of four daughter cells each having exactly half the number of chromosome present in parent cell.
The sperm unite or fertilize with egg which restore the chromosome number (2n) in the zygote.
Answer:
mitochondria and chloroplasts
Explanation:
the theory says that the bacteria which used oxygen and changed it to ATP molecules changed into mitochondria and those that used light energy to manufacture their own food changed into chloroplasts.this happened after the small prokaryotes which were bacteria were engulfed by the bigger prokaryotes of which some managed to survive and lived together through symbiosis hence the evolution to mitochondria and chloroplasts creating a eukaryotic cell.
