Which membrane enclosed organelles most likely evolved in a similar manner?
A.) mitochondria and ER
B.) chloroplasts and peroxisomes
C.) mitochondria and the golgi apparatus
D.) the nucleus and ER
E.) mitochondria and nucleus
Ans: D.) the nucleus and ER
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Which of the following statements regarding detection of shading in plants is not true?
A. Absorption of red light causes phytochrome to shift from its active state to its inactive state. B. Absorption of red light causes phytochrome to shift from its inactive state to its active state. C. Absorption of far-red light causes phytochrome to shift from its active state to its inactive state D. Absorption of red light causes a seed to germinate. E. Phytochrome is slowly shifted from its active state to an inactive state in the dark.
Which of the following animals has a closed
circulatory system?
a. clams b. bees c. rabbits d. earthworms e. more than one of these animals
Johann Miescher worked with __________ cells
a. sperm b. red blood c. nerve d. muscle e. none of these
What is the underlying reason that a lambda phage would need to switch from the lysogenic state to the lytic state?
A) To have its genome replicated B) To kill its host cell C) To make more of the Cro protein D) To be more efficient in its use of resources E) To escape an endangered host cell