Which animal is bilaterally symmetrical and has a pair of ganglia instead of a true brain?
a. jellyfish
b. planarian
c. earthworm
d. grasshopper
e. centipede
ANSWER: b
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Hydrogen sulfide production is assayed by growth in a medium containing ferric iron (Fe3+)
Indicate whether the statement is true or false.
Methane-producing archaeons in the rumens of cows and bioluminescent bacteria within the bodies of squid are both examples of ____ , where organisms have "evolved together."
Fill in the blank with the appropriate word.
Match the motor molecule to its function.
A) slides along actin in sarcomere B) activation of sliding in flagellar microtubule C) motion toward "minus" end of microtubule D) binds to membranes E) motion toward "plus" end of microtubule 1) cytoplasmic dynein 2) axonemal dynein 3) kinesin 4) myosin V, dimer 5) myosin II, filament
Describe the different distinct forms that regions of proteins can have. Why are these forms so important?
What will be an ideal response?