A problem may result from allowing the slides to dry during the gram staining process
a. true
b. false
Answer: a. true
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Which of the following areas has not been identified by Conservation International as in need of additional sanctuaries?
A. Madagascar B. Alaska C. Papua New Guinea D. Brazil's Atlantic rainforest E. Noneoftheabove
Explanations for mass extinction include all of the following EXCEPT
a. collisions between the earth and other bodies in the solar system. b. continental movements. c. adaptive radiation of new predator species in many lineages. d. alterations in sea level. e. habitat destruction.
People who have a single X chromosome are female, while those with XXY sex chromosomes are males. In order to be a female a human
A. must have two X chromosomes. B. cannot have a Y chromosome. C. must have only one X chromosome. D. must have only one Y chromosome. E. cannot have an X chromosome.
Despite being correct about the first two tenets of the Cell Theory, Schleiden and Schwann made an error about another central feature of cells. What was their error?
A) they both agreed that cells could arise from noncellular materials B) they stated that all cells were immortal C) They claimed that all cells had nuclei through their entire existence D) They claimed that all cells were exactly the same in every detail E) They stated that all cells were smaller than 2 micro in diameter