Which of the following anomalies is (are) possible if an exposure dose of 40 rad (400 mgy) were delivered to a pregnant uterus in the third week of pregnancy?
1. skeletal anomaly
2. organ anomaly
3. neurologic anomaly
a) 1 only
b) 1 and 2 only
c) 2 and 3 only
d) 1, 2, and 3

B) 1 and 2 only

Explanation:

Megagray mGy: is an SI unit of absorbed dose

Term anomaly  has different meaning in different field of sciences but in all cases it refers as a marked deviation from the normal standard.

Like in biology it refers as Chromosome anomaly, which is the disorder caused by a structural error in a chromosome. In this disorder number of chromosomes become excess or reduced in offspring.

Here in this question 40 rad when delivered to pregnant women causes both skeletal and organ anomaly.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.