______ collagen is the most rigid and is very abundant in bones and tendons.
A. Type IV
B. Type I
C. Type III
D. Type V
E. Type II
Answer: B
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A group of scientists meet to discuss the legal implications of genome editing in humans. This is an example of
A) geneaology. B) bioethics. C) metagenomics. D) DNA profiling.
Which of the following was not present on Earth when mitochondria first evolved?
a. archaeans b. bacteria c. protists d. animals
The graphical representation of the combined weight of organisms at each trophic level is a(n) ____
a. Punnett square b. energy flow chart c. energy pyramid d. ecological pyramid e. biomass pyramid
The cylinders in this experiment represent a 24-hour period. The light area represents light periods during a 24-hr. period and the dark area represents dark periods during a 24-hr. period. The critical length of dark vs. light periods for flowering is depicted by the dotted line. Note that some plants are flowering and some are not flowering. Study the results of this experiment on photoperiodism and flowering to determine whether the following statements are true or false.Short-day plants flower when the day length is longer than the critical length.
Answer the following statement true (T) or false (F)