Which of the following is not a shape seen in prokaryotes?
A. Spheres
B. Rods
C. Spirals
D. Icosahedrals
D. Icosahedrals
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Eugenics is the attempt to improve the human species by ____________________
Fill in the blank(s) with correct word
Ice floats in liquid water because there are, on average, fewer hydrogen bonds between molecules in ice than water,
resulting in a lower density.
Indicate whether the statement is true or false.Researchers once believed that mammals were born with all of the neurons they would ever have. Recent research has proven this to be untrue. Approximately how many new neurons develop in the mammalian hippocampus daily?
a. 10 b. 100 c. 1,000 d. 10,000
Blood calcium level is regulated in part by _________ a hormone secreted by the thyroid gland when the blood calcium level rises.
A) serotonin. B) parathyroid. C) calcitonin. D) estrogen.