Which of the following is the correct sequence in
terms of increasing size?
a. ecosystem >>> biogeographic realm >>> biome
>>> biosphere
b. ecosystem >>> biome >>> biosphere >>>
biogeographic realm
c. biome >>> ecosystem >>> biogeographic realm
>>> biosphere
d. ecosystem >>> biome >>> biogeographic realm
>>> biosphere
e. biogeographic realm >>> biome >>> ecosystem
>>> biosphere
Answer: d
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A) ATP. B) the proton motive force. C) phosphoenol pyruvate. D) ATP, the proton motive force, or phosphoenol pyruvate.
During fertilization in humans, _______________________
(a) a wave of Ca2+ ions is released in the fertilized egg's cytoplasm. (b) only one sperm binds to the unfertilized egg. (c) a sperm moves in a random fashion until it encounters an egg. (d) several sperm pronuclei compete in the cytoplasm to fuse with the egg nucleus.
Which is an example of temporal isolation?
A. two plant species have incompatible gametes. B. one plant species is pollinated by bees and a second plant species is pollinated by moths. C. two plant species live on the same mountainside, but one lives on rocky outcrops and the other in open meadows. D. one plant species blooms in June-July and a second plant species blooms in August-September.
Plasmodium falciparum produces proteins that cause ________ in addition to the anemia due to erythrocyte destruction
A) DIC B) toxemia C) black vomit D) capillary damage E) damage to the heart muscle