You have a sample of cat emesis (vomit) and find worms in the sample. The cylindrical worms are long and slender,
pointed at each end, with no other distinguishing characteristics. You conclude they are members of which phylum?
a. Platyhelminthes
b. Nematoda
c. Cnidaria
d. Annelida
e. Nemertea
b
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The ovary in an adult contains
A) seminal vesicles. B) many oocytes in various stages of maturity. C) many sperm in various stages of maturity. D) a number of mature oocytes equal to 100 minus the woman's age.
Research on HIV vaccines is progressing, but success to date has been limited to vaccines that are of
limited effectiveness against a few strains of the HIV virus. However, flu vaccines are similar in their limitations. Why are ‘limited effectiveness’ flu vaccines released, but not HIV vaccines? What will be an ideal response?
A beautiful wood desk you may do your homework on was once a living tree, but after being cut down its tissues died. Now, it only exhibits what property of life?
A. Homeostasis B. Metabolism C. Organization D. Sensitivity
Which of the following membrane-crossing mechanisms requires energy?
A. Active transport B. Facilitated diffusion C. Simple diffusion D. Passive transport E. Turgor