Rhodopsin is simply the opsin protein after it has been activated by 11-cis-retinal.
Indicate whether the statement is true or false
Q. 2What is a characteristic of Alzheimer's disease?
A) It affects 95 percent of those over 80 years of age.
B) It is responsive to dietary choline supplementation.
C) It is associated with stability of brain nerve cell number.
D) It is associated with clumps of beta-amyloid protein in the brain.
Q. 3Which type of study is an example of an experimental study?
A) case control study
B) human intervention study
C) cohort study
D) cross-sectional study
Q. 4Vitamin D increases the abundance of calbindin (Ca++ transporter) in enterocytes by increasing the transcription of the calbindin gene.
Indicate whether the statement is true or false
Q. 5Approximately what percentage of U.S. adults is affected by Alzheimer's disease after age 65?
A) 0.5
B) 5
C) 12
D) 33
Q. 6What is a benefit of using placebos in an experiment?
A) All of the subjects are similar.
B) All of the subjects receive pills.
C) Neither the subjects nor the researchers know who is receiving treatment.
D) One group of subjects receives a treatment and the other group receives nothing.
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