Answer:
help with what? ____________
Answer:
B) The inhibition of normal myelin development in the individual's brain
Explanation:
Phenylketonuria is a disorder characterized by abnormal levels of phenylalanine in the body. It is <u>caused by mutation in DNA that leads to the deficiency of an enzyme known as phenylalanine hydroxylase, which converts phenylalanine to tyrosine</u>, a fundamental substance for dopamine production - related to working memory.
Some of the symptoms of this disorder is intellectual disability, which is caused mainly by demyelination or defective myelin biosynthesis, leading to the <u>inhibition of myelin, a fatty insulating sheath that protects nerves</u>.
Therefore, the cause of the intellectual disability in the individual is <u>the inhibition of normal myelin development in the individual's brain.</u>
Answer: First start by reviewing the instructions. Then ask your teacher for clarification if you do not understand the assignment. Conduct research by going to the library or using the internet. If you are still confused, seek tutoring, study with a friend, or ask specific questions on Brainly.
Hope this helps! :)
Explanation:
Answer:
12th graders will score higher than the 9th graders on the ABC memory test
Explanation:
A directional hypothesis can be explained as a prediction made by a researcher regarding a difference between two variables or groups of a population. In this case, one can predict the direction based on some facts like past research, accepted theory and extensive experience.
In conclusion, the researcher will be able to know the difference in the 12th graders and 9th graders through the directional hypothesis, which will help him to find out that, the 12th graders will score higher than the 9th graders on the ABC memory test based on the experience they have gathered so far.
