Many people at a wedding ceremony represent which level of organization?
A. cell
B. organ
C. organism
D. population
E. ecosystem
Answer: D
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________ is the medication given to combat morning sickness that caused deformed and missing limbs in infants in the late 1950s and early 1960s
A) Thalidomide B) Rubella C) Accutane® D) Alcohol E) Nicotine
When a vesicle moves along microtubules toward the center of the cell, the molecular motor(s) ________ are used?
A. dynein B. molecular motors are not required for movement along microtubules. C. kinesin D. both kinesin and dynein
What type of cellular damage in a malarial parasite would prevent it from penetrating a red blood cell?
A. Failure of the cross-linking of the peptidoglycans B. Mutation in the variable surface glycoprotein genes C. A disruption of the cytoskeletal proteins D. Damage to the choanocytes
Microorganisms characterized by the absence of a nucleus are called
A. fungi. B. pathogens. C. eukaryotes. D. prokaryotes. E. viruses.