Amoebas use pseudopodia for movement and
a. sexual reproduction.
b. excretion.
c. feeding.
d. avoiding predation.
e. asexual reproduction.
C
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Multiple effects of a single gene is known as
a. expressivity. b. penetrance. c. codominance. d. pleiotropy. e. multiple alleles.
Which of the following allows groups of skeletal muscle cells to perform coordinated contractions? (2 points)
a. Their sarcolemma is fused to the tendons, allowing them to function without continual nerve stimulation. b. Their cells are branched and joined end to end, allowing them to function without continual nerve stimulation. c. They contain a complex network of striations, allowing more efficient cell-to-cell communication d. They are connected into multinucleate tissues, allowing more efficient cell-to-cell communication.
Which one of the following statements is TRUE regarding photodynamic therapy?
A) It involves the use of light-sensitive drugs to target a cancer. B) It uses magnets to attract beads coated with a chemotherapeutic drug to a cancer. C) It is used for the treatment of cancers of the breast and ovary. D) It inhibits angiogenesis. E) It involves the use of antibodies to deliver treatments to a cancer.
Which of the following bacterial enzymes causes the release of lysosomal contents into the cytoplasm of the phagocytic cell, leading to the death of the cell?
A. Protein H B. Leukocidin C. M protein D. IgA protease