An —OH group is a(n) __________ group
a. carboxyl
b. hydroxyl
c. amino
d. methyl
e. carbonyl
Answer: b
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Craving alcohol and an inability to limit the amount of alcohol one consumes are symptoms of fetal alcohol syndrome.
Indicate whether the statement is true or false
The analysis of parent—offspring conflict in birds has generated some interesting observations. For example, researchers hypothesized that chicks should beg to be fed by their parents more loudly when their nestmates are less closely related. (See Figure A, where Of = optimal parental investment where the lost siblings are full sibs, and Oh for an offspring whose lost siblings are half sibs.)
Do the data collected bear this out (Figure B)? Figure A Figure B A) Yes, species that evolve extra-pair parentage also tend to evolve louder begging chicks. B) No, the genetic relatedness of the chicks has nothing to do with the level of begging by chicks. C) The data are inconclusive; no conclusion can be formulated.
During the menstrual cycle, what is the main source of progesterone in females?
A) placenta B) pituitary gland C) developing follicle D) corpus luteum
Can a t-stat be negative for the hypothesis test of the population mean of the heights of econometrics students (which will always be positive)?
A. Only if the null hypothesized value if negative. B. Only if the null hypothesized value is positive. C. No. D. None of the answers is correct.