Which statement about Fetal Alcohol Exposure is correct?
There is no known safe level of alcohol use during pregnancy or when trying to get pregnant.
Alcohol prior to conceptions cannot impact the fetus.
Alcohol exposure is most dangerous during the last trimester.
Fetal alcohol exposure increases the likelihood of twins or other multiples.
The Correct Answer is A
A. There is no known safe level of alcohol use during pregnancy or when trying to get pregnant:
Research has shown that any alcohol consumption during pregnancy can potentially cause fetal alcohol spectrum disorders (FASD). There is no safe amount.
B. Alcohol prior to conception cannot impact the fetus:
Alcohol use prior to conception can affect fertility and early embryonic development, especially since many pregnancies are unrecognized during early stages.
C. Alcohol exposure is most dangerous during the last trimester:
All trimesters are critical, but the first trimester is often considered the most vulnerable for teratogenic effects, especially for organ formation.
D. Fetal alcohol exposure increases the likelihood of twins or other multiples:
Alcohol exposure does not increase the likelihood of multiple births; it causes developmental abnormalities.
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Related Questions
Correct Answer is B
Explanation
A. They bind to infected cells and are activated by cytokines:
This describes cytotoxic T cells (CD8+ cells), which kill infected cells, not helper T cells.
B. They activate B cells and produce small cells called cytokines:
Helper T cells (CD4+ cells) stimulate B cells to produce antibodies and secrete cytokines to coordinate the immune response.
C. They destroy infected cells by producing proteins targeting cell membranes:
Again, this is the role of cytotoxic T cells, not helper T cells.
D. They are non-responsive during active infections:
Helper T cells are highly active during infections, directing other immune cells. They are not non-responsive.
Correct Answer is B
Explanation
A. Tachycardia:
Tachycardia is not a primary symptom of Lyme disease; it may occur if there’s secondary heart involvement (Lyme carditis) but is not the most common symptom.
B. Joint pain:
Lyme disease often causes migratory joint pain, especially in large joints like knees, often appearing weeks to months after infection.
C. Dark Urine:
Dark urine is more typical in liver disease or hemolytic conditions, not Lyme disease.
D. Cold Intolerance:
Cold intolerance is associated with hypothyroidism, not Lyme disease.
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