The greatest drop in blood pressure occurs in the
a. arteries.
b. arterioles.
c. capillaries.
d. venules.
e. veins.
Answer: b
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Why is investigating evolutionary relationships by comparing gene sequences more precise than comparing body forms? How do the two methods compare if we consider divergent and convergent evolution?
What will be an ideal response?
Which of the following organelles has its own
DNA and ribosomes?
a. chloroplasts b. rough endoplasmic reticulum c. smooth endoplasmic reticulum d. lysosomes e. none of these organelles has its own DNA and ribosomes
In the diagram, which of the following is true?
A. Both diagrams show developmental sequences occurring in the same animal.
B. Both diagrams show blastulae.
C. Diagram II shows gastrulation in a bird.
D. Diagram I shows gastrulation in a frog.
E. Diagram I shows gastrulation in a mammal and diagram II shows gastrulation in a reptile.
How were experiments done by Griffith similar to those done by Avery, MacLeod, and McCarty?
A. Both used enzymes that destroyed DNA B. Both used pneumococcal bacteria C. Both used purified DNA D. Both were done in the 1940s E. Both used a mouse host