In a freshwater pond, a green alga is likely to be
A) colonial.
B) filamentous.
C) unicellular.
D) colonial, filamentous, multicellular, or unicellular.
Answer: D
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rRNAs are transcribed in the:
A. cytoplasm. B. nucleus. C. nucleolus. D. mitochondria. E. endoplasmic reticulum.
Neandertals did not:a
bury their dead. b. hunt large animals. c. make cave paintings, engravings, and sculptures. d. care for the aged and the sick. e. have religious rituals.
What did Engelmann conclude about the congregation of bacteria in the red and blue areas?
A) Bacteria congregated in these areas due to an increase in the temperature of the red and blue light. B) Bacteria congregated in these areas because these areas had the most oxygen being released. C) Bacteria are attracted to red and blue light and thus these wavelengths are more reactive than other wavelengths. D) Bacteria congregated in these areas due to an increase in the temperature caused by an increase in photosynthesis.
During axonal projection, guidance cues bind to its receptors expressed on the plasma membrane of the (A)________, followed by organization of (B)___________.
a. (A) growth cone (B) cell body b. (A) synaptic terminal (B) cell body c. (A) growth cone (B) filopodia and lamellipodia d. (A) synaptic terminal (B) filopodia and lamellipodia