Roberto's grandmother has alzheimer's disease. therefore, you would expect to see too of the neurotransmitter in her brain.

The Alzheimer's disease can be defined as a neurological disorder in which the memory of the person along with his cognitive abilities is compromised. The brain cells of the affected person starts dying. Because the person with Alzheimer's diseases have poor memory and learning abilities, the levels of the neurotransmitter acetylcholine will be too little in their brain. Acetylcholine is important for processing memory and learning new information. The onset of Alzheimer's will decrease its amount in the brain.

Hence, the blanks can be filled with 'Little' and 'acetylcholine' respectively.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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