Which of the following is NOT considered a peripheral lymphoid tissue?
A) bone marrow
B) spleen
C) appendix
D) adenoids
E) tonsils
Answer: A) bone marrow
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Bacmids:
A. are plasmids used in bacteria to express genes. B. are circular DNA that includes the baculovirus genome and sequences that allow for replication in E. coli. C. contain par genes that are recognized by a site-specific recombinase. D. are useful shuttle vectors for expressing genes in bacteria and yeast. E. are also called multicapsid nucleopolyhedroviruses.
A horseshoe crab uses its long extended spine for what purpose?
a. defending its territory b. digging for clams c. fighting for mates d. protection from predators e. flipping itself right side up
Select all of the following statements that describe the structure of a molecule of DNA.A) twisted double helixB) single-strandedC) contains the nitrogenous bases, adenine, thymine, cytosine, and guanineD) contains deoxyribose sugarE) contains the nitrogenous bases adenine, uracil, cytosine, and guanine
What will be an ideal response?
Veins and venueles have valves in them, but arteries and arterioles do not.
a. true b. false