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Home Q & A Board Biology-Related Homework Help General Biology
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Carlina864 Carlina864
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Posts: 488
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6 years ago
An artificial pacemaker supplements the actions of the
  1.sympathetic nerves.
  2.atrioventricular node.
  3.medulla oblongata.
  4.sinoatrial node.
  5.heart muscle, itself.

Question 2

Four of the following are characteristic of morphogens. Which one is the exception?
  a. They are long-range signals in pattern formation.
  b. They are encoded by master genes.
  c. They affect gene splicing.
  d. Their concentration decreases with distance from source.
  e. They affect development.
Textbook 
Human Biology

Human Biology


Edition: 10th
Authors:
Read 26 times
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wrote...
#1
6 years ago
Answer to q. 1

4

Answer to q. 2

ANSWER: c
Carlina864 Author
wrote...
#2
6 years ago
Thank you for being my superhero!
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