Why does skeletal muscle have a striated appearance?
A) dark color of myosin
B) dense array of microtubules
C) dense packing of ATP molecules
D) regular arrangement of myofibrils
D
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How do mass extinction events influence subsequent species composition and diversity?
A. by immediately increasing species diversity B. by permanently altering climate C. by reducing competition among surviving organisms D. by eliminating smaller organisms instead of larger organisms
Which answer best describes energy flow in biological systems as described in the text?
a. glucose ? G3P ? NADH ? ATP b. bacteria ? archaea ? plants ? animals c. NAD+ ? NADH ? ADP ? ATP d. G3P ? glucose ? ATP ? NAD+ e. pyruvate oxidation ? glycolysis ? fermentation ? citric acid cycle
In which of the following animals does the anus develop before the mouth?
a. Deuterostome b. Diploblast c. Protostome d. Acoelomate
Human traits are controlled only by the genetic material found in the 46 chromosomes. Indicate whether the statement is true or false