. A network of protein filaments called ____ lines and reinforces the inner surface of the nuclear
envelope in animal cells.
a. actins
b. chromatins
c. lamins
d. tubulins
e. lamellae
C
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How do corals react when water temperatures are too high?
A. They leave the shelter of the reef. B. Corals release water at higher temperatures. C. Symbiotic algae living within corals are expelled. D. The metabolic optimum can adapt. E. Corals are more pigmented at higher temperatures.
Four of the following are characteristic of the majority of vascular plants. Which one is the exception?
a. They have leaves. b. They possess dependent gametophytes. c. They produce seeds. d. They have rhizoids. e. They produce microspores and megaspores.
The mediator protein complex in eukaryotes
A. is composed of a single protein. B. facilitates interactions between RNA polymerase II and regulatory transcription factors. C. controls the rate at which RNA polymerase translates mRNA. D. completely enfolds RNA polymerase and the general transcription factors.
A good date for Australopithecus afarensis:
A. 1 mya B. 2.5 mya C. 3.6 mya D. 4 mya E. 7 mya