The adult form of which of the following animals is not capable of locomotion?
a. sponges
b. jellyfish
c. ctenophores
d. planarians
e. flukes
A
Biology & Microbiology
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True or false: Competition can occur over resources such as space, mates, and nesting sites, not just over food
A. true B. false
Biology & Microbiology
Prokaryotes that are curved and comma-like are called
a. cocci. b. bacilli. c. vibrios. d. spirilla. e. sarcina.
Biology & Microbiology
Some tRNA often contains sections of noncomplementary, unusual bases (i.e., other than U, C, A, and G), which are added after transcription. What area of the tRNA would never contain such odd bases in a living organism?
What will be an ideal response?
Biology & Microbiology
Which of the following mechanisms best explains how xylem sap moves up against the downward pull of gravity?
A) cohesion-tension hypothesis B) gravitropism C) phototropism D) expenditure of ATP
Biology & Microbiology