When a new molecule of ATP binds to the _____ head, the cross-bridge between actin and
myosin _____.
Fill in the blank(s) with the appropriate word(s).
ANS: myosin; breaks
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Meerkats are small desert mammals that live in groups of 20–50 animals. You observe one meerkat standing upright on a stump, looking around, while other meerkats forage for food. You hypothesize that this is an example of kin selection
What additional information would you need to know to evaluate your hypothesis? A. the body size of this meerkat relative to other members of the group B. the gender of this meerkat as well as that of all other members of the group C. the degree of genetic relatedness of this meerkat to all members of the group D. all other activities of this meerkat as well as those of all other members of the group E. the foraging success of this meerkat as well as that of all other members of the group
Which of the following is TRUE at the end of
telophase I in corn (20 chromosomes)? a. Each cell has 10 chromosomes. b. Each chromosome is double-stranded. c. Centromeres connect sister chromatids. d. Each cell has 10 chromosomes, and each chromosome is double-stranded. e. Each cell has 10 chromosomes, each chromosome is double-stranded, and centromeres connect sister chromatids
Suppose a small population of deer is introduced to an island. All of the original males have 6 to 10 points on their antlers, and the average male has 8 points
After several generations, if most males have antlers with 10 points and no males have 6 points, the population has undergone ________ selection. Fill in the blank(s) with correct word
If a typhoid fever outbreak has occurred, which of the following statements is true?
a. Proteus colonies of Enterobacteriales are probably present. b. Shigella species are present and may have been transmitted by cattle. c. Salmonella is present, and the serovars may be differentiated by antigenic analysis. d. Escherichia coli bacteria are present, probably passed on by infected human waste in the water supply.