The light-capturing events of photosynthesis involve
A. the stroma.
B. mitochondria
C. cytoplasm.
D. chlorophyll.
D. chlorophyll.
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Sex-influenced traits are expressed ____
a. aftafter the formation of a Barr body b. more in males than in females c. as a result of hormone differences between males and females d. only in males e. only in females
Which of the following is true?
A) The large the Chi-square value, the more likely your results are real. B) Assume that a Chi-square test was conducted to test the goodness of fit to a 3:1 ratio and that a Chi-square value of 2.62 was obtained. The null hypothesis should be accepted. C) With the test of a 3:1 ratio, there are three degrees of freedom. D) Assume that a Chi-square test provided a probability value of 0.02. The null hypothesis should be accepted. E) Assume that a Chi-square test was conducted to test the goodness of fit to a 9:3:3:1 ratio and a Chi-square value of 10.62 was obtained. The null hypothesis should be accepted.
Cells removed from callus that can grow into plantlets illustrates that differentiated cells can be returned to a
totipotent state.
a. True b. False
Down syndrome involves trisomy ____
a. 3 b. 5 c. 15 d. 19 e. 21