If oxygen is present during low-LET radiation the effect of radiation is?
a) reduced
b) minimal
c) maximal
d) the same
Ans: c) maximal
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Magnetoreceptors ____
a. are well characterized and understood b. are known to rely on the mineral magnetite c. help many types of animals navigate long distances d. have been studied only in homing pigeons e. have been studied primarily in moths
If Escherichia coli is cultured in broth containing both glucose and lactose, it ________.
A. uses only the glucose (it cannot use lactose as a source of carbon) B. uses lactose preferentially until the supply is exhausted, then uses glucose C. uses glucose preferentially until the supply is exhausted, then uses lactose D. uses glucose and lactose simultaneously
Early in the spring, cherry trees produce flowers, even before their leaves develop, by using sugars that were stored in their roots the previous year
While cherry flowers are developing, we would expect the phloem pressure near flowers to be ________, and ________ near root storage cells. A) high… high B) high… low C) low… low D) low… high
Body mass index (BMI) is useful because it gives you an idea of how much of your weight is due to adipose tissue.
Answer the following statement true (T) or false (F)