Once the plasma membranes of the egg and sperm fuse, the egg completes meiosis II and undergoes a series of changes that prevent ____ , or fertilization by more than one sperm
Fill in the blank with the appropriate word.
polyspermy
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Which of the following organisms lack membrane bound organelles?
a. plants b. animals c. prokaryotes d. fungi
The term “plankton”
a. refers to a taxonomic division of algae. b. is a common term for unicellular organisms that drift or swim weakly in water. c. includes only multicellular forms. d. refers to small aquatic plants. e. would apply to large brown algae.
Which is NOT a cell or fiber type found in loose connective tissues?
A. mast cells B. chondrocytes C. macrophages D. collagen fibers E. adipose cells
Which of the following findings was essential for Edward Jenner's vaccination process?
A) Exposure to a milder disease form may produce immunity. B) A weakened microorganism will not cause disease. C) Someone who recovers from a disease will not acquire that disease again. D) Disease is caused by viruses. E) Pathogenic microorganisms infect all humans and animals in the same manner.