Which of the following statements is correct? Kinesins and dyneins ____________________
(a) have tails that bind to the filaments.
(b) move along both microtubules and actin filaments.
(c) often move in opposite directions to each other.
(d) derive their energy from GTP hydrolysis.
(c) All other answers are false. The motor heads bind to the filaments [choice (a)]. Both motors move along microtubules [choice (b)] and use ATP hydrolysis for energy [choice (d)].
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In a __________, water or some nutrient moves from an environmental reservoir, through organisms,
then back to the environment. Fill in the blank(s) with the appropriate word(s).
Gene flow is restricted between subspecies because of some extrinsic barrier, such as rivers or mountain ridges
Indicate whether the statement is true or false
Patterns of species migrations, such as birds that nest in North America during the spring and in South America during the winter, do not alter seasonal patterns of regional diversity for a wide range of taxonomic groups
Indicate whether the statement is true or false
Which of the following is the correct order for the four main stages of mitosis?
A. prophase, anaphase, metaphase, telophase B. metaphase, telophase, prophase, anaphase C. prophase, metaphase, anaphase, telophase D. anaphase, prophase, metaphase, telophase