In the IP3 pathway, what is the function of IP3?
a. Activate protein kinase C.
b. Activate phospholipase C.
c. Phosphorylate a protein.
d. Bind calcium channels in the ER.
e. Activate adenylyl cyclase
d
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Which of the following statements best describes Figure 18.7 graph (b), which depicts Galton's data showing distribution of offspring height from the shortest parents he studied?
A. The parental mean for the shortest parents is larger than the mean height of their offspring. B. The parental mean for the shortest parents is smaller than the mean height of their offspring. C. Offspring from the shortest parents are taller than most members of the population. D. The average height of the shortest parents is greater than the mean height of the population. E. None of these answer options is correct.
During Mendel’s lifetime, most people believed that
a. all genetic traits bred true. b. only certain forms of domesticated plants and animals bred true. c. the characteristics of parents were blended in the offspring. d. the mother contributed all the hereditary material for the new generation. e. the father contributed all the hereditary material for the new generation.
Which of the following is NOT a characteristic of Okazaki fragments?
A) They are checked for accuracy by DNA polymerase III. B) They make up the lagging strand of replicated DNA. C) They begin with an RNA primer. D) They are joined together by DNA ligase. E) They are longer in eukaryotic cells.
The designation "group A," used to help classify Streptococcus pyogenes, refers to this bacterium's
A) Lancefield antigen. B) hemolysis pattern. C) M protein. D) type of streptokinase produced. E) disease associations.