Hensen's node is located:a
in the walls of the archenteron.
b. at the end of the primitive streak.
c. on the outer side of the chorion.
d. inside a blastomere.
e. inside the neural groove
b
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Which of the following individuals introduced the terms “aerobes” and “anaerobes”?
A) Anton van Leeuwenhoek B) Louis Pasteur C) Robert Koch D) Rudolf Virchow
Prostaglandins are
a. protein molecules that act either by paracrine or autocrine mechanisms. b. fatty acid derivatives that act either by paracrine or autocrine mechanisms. c. neurotransmitters that act by paracrine mechanisms. d. amine molecules that act by neuroendocrine mechanisms. e. steroid molecules that are lipid soluble.
What factors can contribute to external ear infections and middle ear infections? Why are children more prone than adults to getting middle ear infections?
What will be an ideal response?
You grow pea plants in eight different treatment scenarios. You record each plant's growth, and then calculate the average growth of the plants for each treatment. Which type graph would display this information best?
A. Bar graph B. Line graph C. Pie chart D. Scatter plot