Which of the following elements is considered a plant micronutrient?
A) iron
B) nitrogen
C) phosphorus
D) oxygen
A
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The theory of continental movement is called
a. plate tectonics. b. plate drift. c. seismology. d. fault line movement. e. sea floor spreading
You work in a DNA lab and have been doing karyotypes for research on various animal species. Your labeling has fallen off several of your specimens. You think this karyotype is from a human. How do you know?
1.There are 23 different chromosomes (46 chromosomes total), which is characteristic of humans.
2.Humans do not have Y chromosomes.
3.There are two of each chromosome, which is characteristic of humans.
4.There is no way to tell. You need more information to determine if this karyotype is from a human.
Osmosis can only occur if water travels through the
A. ER. B. semipermeable membrane. C. cytoskeleton. D. cell wall. E. vacuole.
Can you think of other examples in our anatomy or physiology that represent an "imperfect design" due to evolutionary history similar to the crossing pathways of food and air?
What will be an ideal response?