The genetic information in viroids is:
a. DNA
b. protein
c. lipid
d. RNA
e. either DNA or RNA
d
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The broad, flat part of a leaf is called the ____, while the stalk that attaches the leaf to the stem is called the ____
a. stipule; petiole b. blade; stipule c. stipule; axil d. petiole; axil e. blade; petiole
Dinosaurs are not alive today because they
A) evolved too quickly in response to a changing environment. B) did not possess the genetic material that beneficial mutations act on. C) did not evolve fast enough to keep up with rapid environmental change. D) evolved adaptations that were beneficial in their constant, unchanging environment.
What is the function of polycomb group proteins?
What will be an ideal response?
If an individual wanted to hold their breath underwater for a long period of time they would breath very rapidly prior to the dive. What does this accomplish?
A. They would decrease the amount of H+ in their bloodstream which would cause them to temporarily stop breathing. B. They would increase the amount of H+ in their bloodstream which would cause them to temporarily stop breathing. C. They would decrease the amount of CO2 in their bloodstream which would cause them to temporarily stop breathing. D. They would increase the amount of CO2 in their bloodstream which would cause them to temporarily stop breathing.