______ determines which B-cell is cloned in an antibody-mediated response
A. The antibody
B. The antigen
C. A macrophage
D. Complement
E. A neutrophil
B
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Match the term with the appropriate description.A. A bulge (a weak spot) in the artery wallB. Degenerative changes in arteriesC. An overstretching of the veins of the lower extremitiesD. Inflammation of the veinsE. Small vessels that supply nutrients to large arteriesVaricose veins
Fill in the blank(s) with the appropriate word(s).
Predict the possible genotypes of offspring of a couple who both are heterozygous for free earlobes. The trait for free earlobes is carried on the dominant allele while the trait for attached earlobes is carried on the recessive allele
What will be an ideal response?
Which is not true about synovial joints?
A. All articulating bone surfaces are covered with articular cartilage. B. Synovial joints are enclosed by fibrous articular capsules. C. Synovial fluid is secreted by the synovial membrane. D. Ligaments strengthen and reinforce joints. E. Blood circulates within the joint cavity to nourish the articular cartilage.
Which of the following changes would most increase the resistance to blood flow in a blood vessel?
A. Decreasing the hematocrit from 50% to 40% B. Doubling the length of the vessel C. Halving the diameter of the vessel D. Doubling the diameter of the vessel E. Halving the length of the vessel